def main(_):
pp.pprint(flags.FLAGS.__flags)
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
with tf.Session() as sess:
if FLAGS.dataset == 'mnist':
dcgan = DCGAN(sess, image_size=FLAGS.image_size, batch_size=FLAGS.batch_size,y_dim=10,
dataset_name=FLAGS.dataset, is_crop=FLAGS.is_crop, checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir = FLAGS.sample_dir, mid_epoch = FLAGS.mid_epoch)
else:
dcgan = DCGAN(sess, image_size=FLAGS.image_size, input_size=FLAGS.input_size,
batch_size=FLAGS.batch_size, report_freq=FLAGS.report_freq,
dataset_name=FLAGS.dataset, is_crop=FLAGS.is_crop, checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir = FLAGS.sample_dir, mid_epoch = FLAGS.mid_epoch,
large_data_path = FLAGS.large_data_path, small_data_path = FLAGS.small_data_path)
if FLAGS.is_train:
dcgan.train(FLAGS)
else:
dcgan.load(FLAGS.checkpoint_dir)
if FLAGS.visualize:
to_json("./web/js/layers.js", [dcgan.h0_w, dcgan.h0_b, dcgan.g_bn0],
[dcgan.h1_w, dcgan.h1_b, dcgan.g_bn1],
[dcgan.h2_w, dcgan.h2_b, dcgan.g_bn2],
[dcgan.h3_w, dcgan.h3_b, dcgan.g_bn3],
[dcgan.h4_w, dcgan.h4_b, None])
# Below is codes for visualization
OPTION = 2
visualize(sess, dcgan, FLAGS, OPTION)
def tes_mnist(epoch):
# 在测试集上检验效果
feature_list = []
label_list = []
with torch.no_grad():
eval_loss = 0
eval_acc = 0
EbeddingNet.eval() # 将模型改为预测模式
with torch.no_grad():
for images, label in test_loader:
images = images.cuda()
label = label.cuda()
feature = EbeddingNet(images, epoch)
#out = head(feature)
out, loss = head(feature, label)
feature_list.append(feature)
label_list.append(label)
#loss = myCrossEntropyLoss(out, label)
eval_loss += loss.item()
_, pred = out.max(1)
num_correct = (pred == label).sum().item()
acc = float(num_correct) / images.shape[0]
eval_acc += acc
feats = torch.cat(feature_list, 0)
labels = torch.cat(label_list, 0)
if name == 'CenterFace':
visualize_center(head.center, feats, labels, epoch, writer, name)
else:
visualize(feats, labels, epoch, writer, name)
visualize_cos(feats, labels, epoch, writer, head, name)
return eval_acc, eval_loss
def main(_):
pp.pprint(flags.FLAGS.__flags)
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
with tf.Session() as sess:
dcgan = DCGAN(sess,
image_size=FLAGS.image_size,
output_size=FLAGS.output_size,
batch_size=FLAGS.batch_size,
sample_size=FLAGS.sample_size)
if FLAGS.is_train:
dcgan.train(FLAGS)
else:
dcgan.load(FLAGS.checkpoint_dir)
if FLAGS.visualize:
# to_json("./web/js/layers.js", [dcgan.h0_w, dcgan.h0_b, dcgan.g_bn0],
# [dcgan.h1_w, dcgan.h1_b, dcgan.g_bn1],
# [dcgan.h2_w, dcgan.h2_b, dcgan.g_bn2],
# [dcgan.h3_w, dcgan.h3_b, dcgan.g_bn3],
# [dcgan.h4_w, dcgan.h4_b, None])
# Below is codes for visualization
OPTION = 2
visualize(sess, dcgan, FLAGS, OPTION)
def visualize_predicts(predicts, images_path, labels, masks, height, width,
name):
"""
right: green
error: red
missing: blue
"""
if not path.exists('./logs/' + name + '/predicts/'):
system('mkdir ./logs/' + name + '/predicts/')
images = load_hdf5(images_path + 'test_images.hdf5')
pad_height = labels.shape[1]
pad_width = labels.shape[2]
for i in range(len(predicts)):
vis = np.zeros((pad_height, pad_width, 3))
right = predicts[i] * np.squeeze(labels[i]) * np.squeeze(masks[i])
error = predicts[i] - right
missing = np.squeeze(labels[i]) - right
vis[:, :, 0] = error
vis[:, :, 1] = right
vis[:, :, 2] = missing
vis = np.concatenate((images[i], vis[:height, :width] * 255), axis=0)
visualize(vis, './logs/' + name + '/predicts/' + str(i + 1) + '.png')
def main(_):
pp.pprint(flags.FLAGS.__flags)
if FLAGS.input_width is None:
FLAGS.input_width = FLAGS.input_height
if FLAGS.output_width is None:
FLAGS.output_width = FLAGS.output_height
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
#gpu_options = tf.GPUOptions(per_process_gpu_memory_fraction=0.333)
run_config = tf.ConfigProto()
run_config.gpu_options.allow_growth=True
with tf.Session(config=run_config) as sess:
if FLAGS.dataset == 'birds':
dcgan = DCGAN(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
sample_num=FLAGS.batch_size,
y_dim=None,
z_dim=FLAGS.generate_test_images,
dataset_name=FLAGS.dataset,
input_fname_pattern=FLAGS.input_fname_pattern,
crop=FLAGS.crop,
checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir)
else:
dcgan = DCGAN(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
sample_num=FLAGS.batch_size,
z_dim=FLAGS.generate_test_images,
dataset_name=FLAGS.dataset,
input_fname_pattern=FLAGS.input_fname_pattern,
crop=FLAGS.crop,
checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir)
show_all_variables()
if FLAGS.train:
dcgan.train(FLAGS)
else:
if not dcgan.load(FLAGS.checkpoint_dir)[0]:
raise Exception("[!] Train a model first, then run test mode")
OPTION = 1
visualize(sess, dcgan, FLAGS, OPTION)
def main(_):
pp.pprint(flags.FLAGS.__flags)
if FLAGS.input_width is None:
FLAGS.input_width = FLAGS.input_height
if FLAGS.output_width is None:
FLAGS.output_width = FLAGS.output_height
# gpu_options = tf.GPUOptions(per_process_gpu_memory_fraction=0.333)
run_config = tf.ConfigProto()
run_config.gpu_options.allow_growth = True
with tf.Session(config=run_config) as sess:
HiDDen = Hidden(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
dataset_name=FLAGS.dataset,
)
HiDDen.train()
OPTION = 1
visualize(sess, Hidden, FLAGS, OPTION)
def main(_):
loader = Loader(FLAGS.data_dir, FLAGS.data, FLAGS.batch_size)
print("# of data: {}".format(loader.data_num))
with tf.Session() as sess:
lsgan = LSGAN([FLAGS.batch_size, 112, 112, 3])
sess.run(tf.global_variables_initializer())
for epoch in range(10000):
loader.reset()
for step in range(int(loader.batch_num / FLAGS.d)):
if (step == 0 and epoch % 1 == 100):
utils.visualize(sess.run(lsgan.gen_img), epoch)
for _ in range(FLAGS.d):
batch = np.asarray(loader.next_batch(), dtype=np.float32)
batch = (batch - 127.5) / 127.5
#print("{}".format(batch.shape))
feed = {lsgan.X: batch}
_ = sess.run(lsgan.d_train_op, feed_dict=feed)
#utils.visualize(batch, (epoch+1)*100)
#cv2.namedWindow("window")
#cv2.imshow("window", cv2.cvtColor(batch[0], cv2.COLOR_RGB2BGR))
#cv2.waitKey(0)
#cv2.destroyAllWindows()
_ = sess.run(lsgan.g_train_op)
def main(_):
if FLAGS.input_width is None:
FLAGS.input_width = FLAGS.input_height
if FLAGS.output_width is None:
FLAGS.output_width = FLAGS.output_height
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
# Prevent tensorflow from allocating the totality of a GPU memory
run_config = tf.ConfigProto()
run_config.gpu_options.allow_growth=True
with tf.Session(config=run_config) as sess:
dcgan = DCGAN(sess, flags=FLAGS)
show_all_variables()
if FLAGS.train:
dcgan.train(FLAGS)
else:
if not dcgan.load(FLAGS.checkpoint_dir)[0]:
raise Exception("[!] Train a model first, then run test mode")
visualize(sess, dcgan, FLAGS)
def _train_2(self, args, epoch, old_disc, disc, gen, train_loader,
optimizer_d, train_output_dir):
cls_criterion = nn.CrossEntropyLoss()
_loss_g, _loss_cls_gen, _loss_adv_gen = 0., 0., 0.
_loss_d, _loss_cls, _loss_adv = 0., 0., 0.
ypred, ypred_gen = [], []
ytrue, ytrue_gen = [], []
# gen_loss_lst = []
for i, (inputs, featmaps, targets) in enumerate(train_loader):
inputs, featmaps, targets = inputs.to(args.device), featmaps.to(
args.device), targets.to(args.device)
# Optimize Discriminator
loss = 0
optimizer_d.zero_grad()
feats, logits_cls, logits_adv = old_disc(featmaps)
gen_image = gen(feats.unsqueeze(2).unsqueeze(3).detach())
feats_gen, logits_cls_gen, logits_adv_gen = disc(gen_image)
loss_cls_gen = cls_criterion(logits_cls_gen, targets.long())
loss = loss_cls_gen
_loss_cls_gen += loss_cls_gen.item()
preds_gen = F.softmax(logits_cls_gen,
dim=1).argmax(dim=1).cpu().numpy().tolist()
ypred_gen.extend(preds_gen)
ytrue_gen.extend(targets)
loss.backward()
optimizer_d.step()
feats, logits_cls, logits_adv = disc(featmaps)
loss_cls = cls_criterion(logits_cls, targets.long())
_loss_cls += loss_cls.item()
preds = F.softmax(logits_cls,
dim=1).argmax(dim=1).cpu().numpy().tolist()
ypred.extend(preds)
ytrue.extend(targets)
acc = round((np.array(ypred) == np.array(ytrue)).sum() / len(ytrue), 4)
acc_gen = round((np.array(ypred_gen) == np.array(ytrue_gen)).sum() /
len(ytrue_gen), 4)
if epoch % args.visualize_freq == 0 or epoch == args.epochs + 1:
print("Epoch {}, Training Iteration {}".format(epoch, i))
print("Accuracy: {}, Accuracy gen: {}".format(acc, acc_gen))
print("Loss_cls: {}, Loss_cls_gen: {}".format(
_loss_cls / (i + 1), _loss_cls_gen / (i + 1)))
visualize(featmaps[0],
gen_image[0],
out_dir=train_output_dir + str(epoch) + "_" + str(i) +
".jpg")
return {
"Train_acc": acc,
"Train_acc_gen": acc_gen,
"Loss_cls": _loss_cls / (i + 1),
"Loss_cls_gen": _loss_cls_gen / (i + 1)
}
def main(_):
pp.pprint(flags.FLAGS.__flags)
if FLAGS.output_width is None:
FLAGS.output_width = FLAGS.output_height
assert (os.path.exists(FLAGS.checkpoint_dir))
run_config = tf.ConfigProto()
run_config.gpu_options.allow_growth = True
with tf.Session(config=run_config) as sess:
dcgan = DCGAN(sess,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
dataset_name=FLAGS.dataset,
checkpoint_dir=FLAGS.checkpoint_dir,
lam=FLAGS.lam)
#dcgan.load(FLAGS.checkpoint_dir):
dcgan.complete(FLAGS)
show_all_variables()
# to_json("./web/js/layers.js", [dcgan.h0_w, dcgan.h0_b, dcgan.g_bn0],
# [dcgan.h1_w, dcgan.h1_b, dcgan.g_bn1],
# [dcgan.h2_w, dcgan.h2_b, dcgan.g_bn2],
# [dcgan.h3_w, dcgan.h3_b, dcgan.g_bn3],
# [dcgan.h4_w, dcgan.h4_b, None])
# Below is codes for visualization
OPTION = 1
visualize(sess, dcgan, FLAGS, OPTION)
def main(_):
pp.pprint(flags.FLAGS.__flags)
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
# gpu_options = tf.GPUOptions(per_process_gpu_memory_fraction=0.333)
run_config = tf.ConfigProto()
run_config.gpu_options.allow_growth = True
with tf.Session(config=run_config) as sess:
patchGan = PatchGAN(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
sample_num=FLAGS.batch_size,
y_dim=10,
z_dim=FLAGS.z_dim,
checkpoint_dir=FLAGS.checkpoint_dir)
show_all_variables()
if FLAGS.train:
patchGan.train(FLAGS)
else:
if not patchGan.load(FLAGS.checkpoint_dir)[0]:
raise Exception("[!] Train a model first, then run test mode")
OPTION = 1
visualize(sess, patchGan, FLAGS, OPTION)
def visualize(model,
data_loader,
data_iterator,
metrics,
params,
num_steps,
random=False):
"""
CONTINUE NOTE:
https://github.com/sharkmir1/Hierarchical-Attention-Network/blob/master/utils.py
Implement attention using code from above
TODO: get self.vocab and self.tag_map to view it properly
but just visualize it on indices for now.
1. call visualize from eval
2. return attn_weights from model
3. implement vis using above code (test.py and utils.py)
"""
# call utils.visualize to visualize
model.eval()
for i in tqdm(range(num_steps)):
data_batch, labels_batch = next(data_iterator)
# print(data_batch.shape)
# print(labels_batch.shape)
# print(data_batch[0])
utils.visualize(model,
data_batch,
labels_batch,
data_loader,
i,
view_browser=True)
# exit()
_ = input("ENTER to continue")
def test_viz():
data, _, dataset_info = make_mpii(Config.MPII_SOURCE, Config.MPII_DATA,
"mpii")
joint_info = dataset_info['joint_info']
for d in data[:5]:
coords = d['coords']
# find top left
top_x = 9999
top_y = 9999
bottom_x = 0
bottom_y = 0
for coord in coords:
x, y = coord
if x < top_x:
top_x = x
if x > bottom_x:
bottom_x = x
if y < top_y:
top_y = y
if y > bottom_y:
bottom_y = y
bbox = [(top_x, top_y), (bottom_x, bottom_y)]
visualize(d['path'], d['coords'], joint_info.stick_figure_edges, bbox)
def train(loss_type):
"""
original_softmax_loss_network = network(0)
modified_softmax_loss_network = network(1)
angular_softmax_loss_network = network(2)
"""
# define input placeholder for network
images = tf.placeholder(tf.float32, shape=[batch_size,28,28,1], name='input')
labels = tf.placeholder(tf.int64, [batch_size,])
global_step = tf.Variable(0, trainable=False)
add_step_op = tf.assign_add(global_step, tf.constant(1))
# about network
network = model.Model(images, labels, embedding_dim, loss_type)
accuracy = network.accuracy
loss = network.loss
# define optimizer and learning rate
decay_lr = tf.train.exponential_decay(lr, global_step, 500, 0.9)
optimizer = tf.train.AdamOptimizer(decay_lr)
train_op = optimizer.minimize(loss)
sess = tf.Session()
sess.run(tf.global_variables_initializer())
# training process
network.loss_type = loss_type
print('training loss type %d' %loss_type)
if loss_type ==0: f = open('./result/oringal_softmax_result.txt', 'w')
if loss_type ==1: f = open('./result/modified_softmax_result.txt', 'w')
if loss_type ==2: f = open('./result/angular_softmax_result.txt', 'w')
# summary = tf.summary.FileWriter("./image/", sess.graph)
for epoch in range(epochs):
nlabels = np.zeros((train_batchs*batch_size,), dtype=np.int32)
embeddings = np.zeros((train_batchs*batch_size, embedding_dim), dtype=np.float32)
train_acc = 0.
for batch in tqdm(range(train_batchs)):
i,j = batch*batch_size, (batch+1)*batch_size
batch_images, batch_labels = mnist.train.next_batch(batch_size)
feed_dict = {images:batch_images, labels:batch_labels}
_, _, batch_loss, batch_acc, embeddings[i:j,:] = sess.run([train_op, add_step_op, loss, accuracy, network.embeddings], feed_dict)
nlabels[i:j] = batch_labels
f.write(" ".join(map(str,[batch_acc, batch_loss]))+ "\n")
# print(batch_acc)
train_acc += batch_acc
train_acc /= train_batchs
print("epoch %2d---------------------------train accuracy:%.4f" %(epoch+1, train_acc))
visualize(embeddings, nlabels, epoch, train_acc, picname="./image/%d/%d.jpg"%(loss_type, epoch))
# testing process
test_acc = 0.
embeddings = np.zeros((test_batchs*batch_size, embedding_dim), dtype=np.float32)
nlabels = np.zeros(shape=(test_batchs*batch_size,), dtype=np.int32)
for batch in range(test_batchs):
i,j = batch*batch_size, (batch+1)*batch_size
batch_images, batch_labels = mnist.test.next_batch(batch_size)
feed_dict = {images:batch_images, labels:batch_labels}
_, batch_loss, batch_acc, embeddings[i:j,:] = sess.run([train_op, loss, accuracy, network.embeddings], feed_dict)
nlabels[i:j] = batch_labels
test_acc += batch_acc
test_acc /= test_batchs
print("test accuracy: %.4f" %test_acc)
return test_acc, embeddings, nlabels
def evaluate(epoch, disease):
try:
os.mkdir('./output_{}'.format(disease))
except:
pass
model.eval()
sub_RNA, sub_miRNA = wrapper(RNA), wrapper(miRNA)
recon_batch, mu, logvar = model(sub_RNA, sub_miRNA)
if args.cuda:
hidden = mu.cpu().data.numpy()
else:
hidden = mu.data.numpy()
if survival.shape[-1] == 3:
p_value, ratio, surv_info = cox(hidden, survival, epoch)
print('Epoch %d ====> Cox P-value: %.7f' % (epoch, p_value))
surv_info.to_csv('./output_{}/survieinfo_{}.csv'.format(
disease, epoch),
index=False)
np.savetxt('./output_{}/latent_{}.csv'.format(disease, epoch),
hidden,
delimiter='\t')
else:
# TO-DO: for all data
types = set(survival[:, -1].tolist())
for type_ in types:
indices = np.where(survival[:, -1] == type_)[0]
p_value, ratio = cox(hidden[indices], survival[indices])
print('Epoch %d ====> Type: %s, Cox P-value: %.7f' %
(epoch, type_, p_value))
visualize(hidden, survival[:, -1], outfp='%d.png' % (epoch))
return p_value
def main(_):
pp.pprint(flags.FLAGS.__flags)
sample_dir_ = os.path.join(FLAGS.sample_dir, FLAGS.name)
checkpoint_dir_ = os.path.join(FLAGS.checkpoint_dir, FLAGS.name)
log_dir_ = os.path.join(FLAGS.log_dir, FLAGS.name)
if not os.path.exists(checkpoint_dir_):
os.makedirs(checkpoint_dir_)
if not os.path.exists(sample_dir_):
os.makedirs(sample_dir_)
if not os.path.exists(log_dir_):
os.makedirs(log_dir_)
with tf.Session() as sess:
if FLAGS.dataset == 'mnist':
dcgan = DCGAN(sess, config=FLAGS, batch_size=FLAGS.batch_size, output_size=28, c_dim=1,
dataset_name=FLAGS.dataset, is_crop=FLAGS.is_crop, checkpoint_dir=checkpoint_dir_, sample_dir=sample_dir_, log_dir=log_dir_)
else:
dcgan = DCGAN(sess, image_size=FLAGS.image_size, batch_size=FLAGS.batch_size, output_size=FLAGS.output_size, c_dim=FLAGS.c_dim,
dataset_name=FLAGS.dataset, is_crop=FLAGS.is_crop, checkpoint_dir=FLAGS.checkpoint_dir, sample_dir=FLAGS.sample_dir)
if FLAGS.is_train:
dcgan.train(FLAGS)
else:
dcgan.sampling(FLAGS)
if FLAGS.visualize:
to_json("./web/js/layers.js", [dcgan.h0_w, dcgan.h0_b, dcgan.g_bn0],
[dcgan.h1_w, dcgan.h1_b, dcgan.g_bn1],
[dcgan.h2_w, dcgan.h2_b, dcgan.g_bn2],
[dcgan.h3_w, dcgan.h3_b, dcgan.g_bn3],
[dcgan.h4_w, dcgan.h4_b, None])
# Below is codes for visualization
OPTION = 2
visualize(sess, dcgan, FLAGS, OPTION)
def evaluate(epoch):
model.eval()
sub_RNA, sub_methy, sub_miRNA = wrapper(RNA), wrapper(
methylation), wrapper(miRNA)
recon_batch, mu, logvar = model(sub_RNA, sub_methy, sub_miRNA)
if args.cuda:
hidden = mu.cpu().data.numpy()
else:
hidden = mu.data.numpy()
if survival.shape[-1] == 3:
p_value, ratio, surv_info = cox(hidden, survival)
print('Epoch %d ====> Cox P-value: %.7f' % (epoch, p_value))
surv_info.to_csv('./temp/survie_info_{}.csv'.format(epoch),
index=False)
else:
# TO-DO: for all data
types = set(survival[:, -1].tolist())
for type_ in types:
indices = np.where(survival[:, -1] == type_)[0]
p_value, ratio, surv_info = cox(hidden[indices], survival[indices])
print('Epoch %d ====> Type: %s, Cox P-value: %.7f' %
(epoch, type_, p_value))
visualize(hidden, survival[:, -1], outfp='%d.png' % (epoch))
return p_value
def main(_):
pp.pprint(flags.FLAGS.__flags)
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
with tf.Session() as sess:
if FLAGS.dataset == 'mnist':
dcgan = DCGAN(sess, image_size=FLAGS.image_size, batch_size=FLAGS.batch_size, y_dim=10,
dataset_name=FLAGS.dataset, is_crop=FLAGS.is_crop, checkpoint_dir=FLAGS.checkpoint_dir)
else:
dcgan = DCGAN(sess, image_size=FLAGS.image_size, batch_size=FLAGS.batch_size,
dataset_name=FLAGS.dataset, is_crop=FLAGS.is_crop, checkpoint_dir=FLAGS.checkpoint_dir)
if FLAGS.is_train:
dcgan.train(FLAGS)
else:
dcgan.load(FLAGS.checkpoint_dir)
to_json("./web/js/layers.js", [dcgan.h0_w, dcgan.h0_b, dcgan.g_bn0],
[dcgan.h1_w, dcgan.h1_b, dcgan.g_bn1],
[dcgan.h2_w, dcgan.h2_b, dcgan.g_bn2],
[dcgan.h3_w, dcgan.h3_b, dcgan.g_bn3],
[dcgan.h4_w, dcgan.h4_b, None])
# Below is codes for visualization
OPTION = 2
visualize(sess, dcgan, FLAGS, OPTION)
def main(path):
train_images, train_labels = utils.load_training_data(path)
test_images, test_labels = utils.load_test_data(path)
n_classes = 10
model = KMeans(n_clusters=n_classes, n_init=1, max_iter=1)
model.fit(train_images)
# which images are assigned to each cluster:
# 1. check all data points assigned to each cluster
# 2. check actual labels of the data points assigned to each cluster
# 3. assign the mode of actual labels to be the label for that cluster
cluster_label_dict = {}
for cluster_num in range(n_classes):
idx = utils.cluster_indices(cluster_num, model.labels_)
original_labels = np.take(train_labels, idx)
mode = stats.mode(original_labels)[0][0]
cluster_label_dict.update({cluster_num: mode})
# prediction
predicted_cluster = model.predict(test_images)
predicted_labels = np.vectorize(cluster_label_dict.get)(predicted_cluster)
accuracy = utils.classification_accuracy(predicted_labels, test_labels)
print(" K means clustering accuracy for cifar 10 = {}".format(accuracy))
# visualise clusters
cluster_centroids = model.cluster_centers_
utils.visualize(cluster_centroids)
def main(_):
pp.pprint(flags.FLAGS.__flags)
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
with tf.Session() as sess:
if FLAGS.dataset == 'mnist':
dcgan = DCGAN(sess, image_size=FLAGS.image_size, batch_size=FLAGS.batch_size, y_dim=10, output_size=28, c_dim=1,
dataset_name=FLAGS.dataset, is_crop=FLAGS.is_crop, checkpoint_dir=FLAGS.checkpoint_dir, sample_dir=FLAGS.sample_dir)
else:
dcgan = DCGAN(sess, image_size=FLAGS.image_size, batch_size=FLAGS.batch_size, output_size=FLAGS.output_size, c_dim=FLAGS.c_dim,
dataset_name=FLAGS.dataset, is_crop=FLAGS.is_crop, checkpoint_dir=FLAGS.checkpoint_dir, sample_dir=FLAGS.sample_dir)
if FLAGS.is_train:
dcgan.train(FLAGS)
else:
dcgan.load(FLAGS.checkpoint_dir)
print(dcgan.evaluate(6400))
if FLAGS.visualize:
# to_json("./web/js/layers.js", [dcgan.h0_w, dcgan.h0_b, dcgan.g_bn0],
# [dcgan.h1_w, dcgan.h1_b, dcgan.g_bn1],
# [dcgan.h2_w, dcgan.h2_b, dcgan.g_bn2],
# [dcgan.h3_w, dcgan.h3_b, dcgan.g_bn3],
# [dcgan.h4_w, dcgan.h4_b, None])
# Below is codes for visualization
OPTION = 2
visualize(sess, dcgan, FLAGS, OPTION)
def main(_):
pp.pprint(flags.FLAGS.__flags)
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
run_config = tf.ConfigProto()
run_config.gpu_options.allow_growth=True
with tf.Session(config=run_config) as sess:
dcgan = DCGAN(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
sample_num=FLAGS.batch_size,
y_dim=7,
crop=FLAGS.crop,
checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir)
show_all_variables()
if FLAGS.train:
dcgan.train(FLAGS)
else:
if not dcgan.load(FLAGS.checkpoint_dir)[0]:
raise Exception("[!] Train a model first, then run test mode")
# Below is codes for visualization
OPTION = 1
visualize(sess, dcgan, FLAGS)
def _iterate(self, epoch, phase):
meter = Meter(phase, epoch)
start = time.strftime('%H:%M:%S')
print("Starting epoch: {} | phase: {} | Time: {}".format(
epoch + 1, phase, start))
dl = self.dataloaders[phase]
running_loss = 0.0
total_steps = len(dl)
self.optimizer.zero_grad()
for itr, sample in enumerate(tqdm(dl)):
images = sample['image']
targets = sample['mask']
loss, outputs = self._forward(images, targets)
loss /= self.accumlation_steps
if phase == 'train':
loss.backward()
if (itr + 1) % self.accumlation_steps == 0:
self.optimizer.step()
self.optimizer.zero_grad()
running_loss += loss.item()
outputs = outputs.detach().cpu()
meter.update(targets, outputs)
epoch_loss = (running_loss * self.accumlation_steps) / total_steps
dice, iou = epoch_log(phase, epoch, epoch_loss, meter, start)
visualize(sample, outputs, epoch, phase)
self.losses[phase].append(epoch_loss)
self.dice_scores[phase].append(dice)
self.iou_scores[phase].append(iou)
return epoch_loss
def main(_):
pp.print(flags.FLAGS.__flags)
if FLAGS.input_width is None:
FLAGS.input_width = FLAGS.input_height
if FLAGS.output_width is None:
FLAGS.output_width = FLAGS.output_height
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
run_config = tf.ConfigProto()
run_config.gpu_options.allow_growth = True
with tf.Session(config=run_config) as sess:
if FLAGS.dataset == 'mnist':
dcgan = DCGAN(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
sample_num=FLAGS.batch_size,
y_dim=10,
dataset_name=FLAGS.dataset,
input_fname_pattern=FLAGS.input_fname_pattern,
crop=FLAGS.crop,
checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir
)
else:
dcgan = DCGAN(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
sample_num=FLAGS.batch_size,
dataset_name=FLAGS.dataset,
input_fname_pattern=FLAGS.input_fname_pattern,
crop=FLAGS.crop,
checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir,
)
show_all_variables()
if FLAGS.train:
dcgan.train(FLAGS)
else:
if not dcgan.load(FLAGS.checkpoint_dir)[0]:
raise Exception('[!] Train a model first, then run test mode')
OPTION = 1
visualize(sess, dcgan, FLAGS, OPTION)
def main(_):
pp.pprint(flags.FLAGS.__flags)
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
#gpu_options = tf.GPUOptions(per_process_gpu_memory_fraction=0.333)
run_config = tf.ConfigProto()
run_config.gpu_options.allow_growth=True
with tf.Session(config=run_config) as sess:
if FLAGS.dataset == 'mnist':
dcgan = DCGAN(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
y_dim=10,
c_dim=1,
dataset_name=FLAGS.dataset,
input_fname_pattern=FLAGS.input_fname_pattern,
is_crop=FLAGS.is_crop,
checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir)
else:
dcgan = DCGAN(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
c_dim=FLAGS.c_dim,
dataset_name=FLAGS.dataset,
input_fname_pattern=FLAGS.input_fname_pattern,
is_crop=FLAGS.is_crop,
checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir)
if FLAGS.is_train:
dcgan.train(FLAGS)
else:
if not dcgan.load(FLAGS.checkpoint_dir):
raise Exception("[!] Train a model first, then run test mode")
# to_json("./web/js/layers.js", [dcgan.h0_w, dcgan.h0_b, dcgan.g_bn0],
# [dcgan.h1_w, dcgan.h1_b, dcgan.g_bn1],
# [dcgan.h2_w, dcgan.h2_b, dcgan.g_bn2],
# [dcgan.h3_w, dcgan.h3_b, dcgan.g_bn3],
# [dcgan.h4_w, dcgan.h4_b, None])
# Below is codes for visualization
OPTION = 1
visualize(sess, dcgan, FLAGS, OPTION)
def main(_):
pp.pprint(flags.FLAGS.__flags)
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
# set up GPU properties:
if FLAGS.gpu:
os.environ['CUDA_VISIBLE_DEVICES'] = str(FLAGS.gpu_id)
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
config.gpu_options.per_process_gpu_memory_fraction = 0.4
config.allow_soft_placement = True
else:
config = tf.ConfigProto()
with tf.Session(config=config) as sess:
if FLAGS.dataset == 'mnist':
dcgan = DCGAN(sess,
image_size=FLAGS.image_size,
batch_size=FLAGS.batch_size,
y_dim=10,
output_size=28,
c_dim=1,
dataset_name=FLAGS.dataset,
is_crop=FLAGS.is_crop,
checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir)
else:
dcgan = DCGAN(sess,
image_size=FLAGS.image_size,
batch_size=FLAGS.batch_size,
output_size=FLAGS.output_size,
c_dim=FLAGS.c_dim,
dataset_name=FLAGS.dataset,
is_crop=FLAGS.is_crop,
checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir)
if FLAGS.is_train:
dcgan.train(FLAGS)
else:
dcgan.load(FLAGS.checkpoint_dir)
if FLAGS.visualize:
# to_json("./web/js/layers.js", [dcgan.h0_w, dcgan.h0_b, dcgan.g_bn0],
# [dcgan.h1_w, dcgan.h1_b, dcgan.g_bn1],
# [dcgan.h2_w, dcgan.h2_b, dcgan.g_bn2],
# [dcgan.h3_w, dcgan.h3_b, dcgan.g_bn3],
# [dcgan.h4_w, dcgan.h4_b, None])
# Below is codes for visualization
OPTION = 2
visualize(sess, dcgan, FLAGS, OPTION)
def Predict(self, img_path, vis=True):
'''
User function: Run inference on image and visualize it. Output mask saved as output_mask.npy
Args:
img_path (str): Relative path to the image file
vis (bool): If True, predicted mask is displayed.
Returns:
list: List of bounding box locations of predicted objects along with classes.
'''
dirPath = "tmp_test"
if (os.path.isdir(dirPath)):
shutil.rmtree(dirPath)
os.mkdir(dirPath)
os.mkdir(dirPath + "/img_dir")
os.mkdir(dirPath + "/gt_dir")
os.system("cp " + img_path + " " + dirPath + "/img_dir")
os.system("cp " + img_path + " " + dirPath + "/gt_dir")
x_test_dir = dirPath + "/img_dir"
y_test_dir = dirPath + "/gt_dir"
if (self.system_dict["params"]["image_shape"][0] % 32 != 0):
self.system_dict["params"]["image_shape"][0] += (
32 - self.system_dict["params"]["image_shape"][0] % 32)
if (self.system_dict["params"]["image_shape"][1] % 32 != 0):
self.system_dict["params"]["image_shape"][1] += (
32 - self.system_dict["params"]["image_shape"][1] % 32)
preprocess_input = sm.get_preprocessing(
self.system_dict["params"]["backbone"])
test_dataset = Dataset(
x_test_dir,
y_test_dir,
self.system_dict["params"]["classes_dict"],
classes_to_train=self.system_dict["params"]["classes_to_train"],
augmentation=get_validation_augmentation(
self.system_dict["params"]["image_shape"][0],
self.system_dict["params"]["image_shape"][1]),
preprocessing=get_preprocessing(preprocess_input),
)
test_dataloader = Dataloder(test_dataset, batch_size=1, shuffle=False)
image, gt_mask = test_dataset[0]
image = np.expand_dims(image, axis=0)
pr_mask = self.system_dict["local"]["model"].predict(image).round()
np.save("output_mask.npy", pr_mask)
if (vis):
visualize(
image=denormalize(image.squeeze()),
pr_mask=pr_mask[..., 0].squeeze(),
)
def _test(self, args, epoch, disc, gen, test_loader, test_output_dir):
mse_criterion = nn.MSELoss()
cls_criterion = nn.CrossEntropyLoss()
_loss_g, _loss_cls_gen, _loss_adv_gen = 0., 0., 0.
_loss_d, _loss_cls, _loss_adv = 0., 0., 0.
_loss = 0.
ypred, ypred_gen = [], []
ytrue, ytrue_gen = [], []
for i, (inputs, featmaps, targets) in enumerate(test_loader):
loss = 0
inputs, featmaps, targets = inputs.to(args.device), featmaps.to(args.device), targets.to(args.device)
feats, logits_cls, logits_adv = disc(featmaps)
loss_cls = cls_criterion(logits_cls, targets.long())
loss = loss_cls
_loss_cls += loss_cls.item()
preds = F.softmax(logits_cls, dim=1).argmax(dim=1).cpu().numpy().tolist()
ypred.extend(preds)
ytrue.extend(targets)
# feats, gen_targets = self._sample_vecs(inputs.shape[0])
# feats = feats.to(args.device)
gen_image = gen(feats.unsqueeze(2).unsqueeze(3).detach())
feats_gen, logits_cls_gen, logits_adv_gen = disc(gen_image)
loss_cls_gen = cls_criterion(logits_cls_gen, targets.long())
loss += args.cls_w*loss_cls_gen
_loss_cls_gen += loss_cls_gen.item()
if args.adv:
loss_adv = (adversarial_loss(logits_adv, is_real=True, is_disc=True, type_=args.adv_type) + adversarial_loss(logits_adv_gen, is_real=False, is_disc=True, type_=args.adv_type))
_loss_adv += loss_adv.item()
loss += args.adv_w*loss_adv.clone()/2.
loss_adv_gen = adversarial_loss(logits_adv_gen, is_real=True, is_disc=False, type_=args.adv_type)
_loss_adv_gen += loss_adv_gen.item()
loss += args.adv_w*loss_adv_gen.clone()
preds_gen = F.softmax(logits_cls_gen, dim=1).argmax(dim=1).cpu().numpy().tolist()
ypred_gen.extend(preds_gen)
ytrue_gen.extend(targets)
_loss += loss.item()
if i%10 == 0:
visualize(featmaps[0], gen_image[0],
out_dir = test_output_dir + str(epoch) + "_" + str(i) + ".jpg")
acc = round((np.array(ypred) == np.array(ytrue)).sum() / len(ytrue), 4)
acc_gen = round((np.array(ypred_gen) == np.array(ytrue_gen)).sum() / len(ytrue_gen), 4)
print("Test Set Epoch {}, Training Iteration {}".format(epoch, i))
print("Accuracy: {}, Accuracy gen: {}".format(acc, acc_gen))
print("Loss: {}, Loss_cls: {}, Loss_cls_gen: {}"
.format(_loss/(i+1),_loss_cls/(i+1),_loss_cls_gen/(i+1)))
if args.adv:
print("Loss_adv: {}, Loss_adv_gen: {}"
.format(_loss_adv/(i+1),_loss_adv_gen/(i+1)))
return return_statement(i, acc, acc_gen, _loss_cls, _loss_cls_gen, _loss_adv, _loss_adv_gen)
def main(_):
pp.pprint(flags.FLAGS.__flags)
model_dir = 'mixing_' + str(
FLAGS.lr
) + '_' + FLAGS.z_dims + '_' + FLAGS.epochs + '_' + FLAGS.g_layers + '_' + FLAGS.d_layers + '_' + FLAGS.output_dims + '_' + FLAGS.feature_map_shrink + FLAGS.feature_map_growth + FLAGS.spatial_map_shrink + FLAGS.spatial_map_growth + '_' + FLAGS.loss + '_' + FLAGS.z_distr + '_' + FLAGS.activation + '_' + FLAGS.weight_init + '_' + str(
FLAGS.batch_size) + '_' + str(FLAGS.g_batchnorm) + '_' + str(
FLAGS.d_batchnorm) + '_' + str(FLAGS.normalize_z) + '_' + str(
FLAGS.minibatch_std) + '_' + str(FLAGS.use_wscale) + '_' + str(
FLAGS.use_pixnorm) + '_' + str(FLAGS.D_loss_extra)
gan = growGAN(z_dims=FLAGS.z_dims,
epochs=FLAGS.epochs,
g_layers=FLAGS.g_layers,
d_layers=FLAGS.d_layers,
output_dims=FLAGS.output_dims,
useAlpha=FLAGS.useAlpha,
useBeta=FLAGS.useBeta,
useGamma=FLAGS.useGamma,
useTau=FLAGS.useTau,
feature_map_shrink=FLAGS.feature_map_shrink,
feature_map_growth=FLAGS.feature_map_growth,
spatial_map_shrink=FLAGS.spatial_map_shrink,
spatial_map_growth=FLAGS.spatial_map_growth,
stage=FLAGS.stage,
loss=FLAGS.loss,
z_distr=FLAGS.z_distr,
activation=FLAGS.activation,
weight_init=FLAGS.weight_init,
lr=FLAGS.lr,
beta1=FLAGS.beta1,
beta2=FLAGS.beta2,
epsilon=FLAGS.epsilon,
batch_size=FLAGS.batch_size,
sample_num=FLAGS.sample_num,
gpu=FLAGS.gpu,
g_batchnorm=FLAGS.g_batchnorm,
d_batchnorm=FLAGS.d_batchnorm,
normalize_z=FLAGS.normalize_z,
crop=FLAGS.crop,
trainflag=FLAGS.trainflag,
visualize=FLAGS.visualize,
model_dir=model_dir,
minibatch_std=FLAGS.minibatch_std,
use_wscale=FLAGS.use_wscale,
use_pixnorm=FLAGS.use_pixnorm,
D_loss_extra=FLAGS.D_loss_extra,
G_run_avg=FLAGS.G_run_avg)
show_all_variables()
if FLAGS.trainflag:
gan.train()
else:
if not gan.load()[0]:
raise Exception("[!] Train a model first, then run test mode")
if FLAGS.visualize:
visualize(sess, gan, FLAGS)
def source_only(encoder, classifier, discriminator, source_train_loader,
target_train_loader, save_name):
print("Source-only training")
for epoch in range(params.epochs):
print('Epoch : {}'.format(epoch))
encoder = encoder.train()
classifier = classifier.train()
discriminator = discriminator.train()
classifier_criterion = nn.CrossEntropyLoss().cuda()
start_steps = epoch * len(source_train_loader)
total_steps = params.epochs * len(target_train_loader)
for batch_idx, (source_data, target_data) in enumerate(
zip(source_train_loader, target_train_loader)):
source_image, source_label = source_data
p = float(batch_idx + start_steps) / total_steps
source_image = torch.cat(
(source_image, source_image, source_image),
1) # MNIST convert to 3 channel
source_image, source_label = source_image.cuda(
), source_label.cuda() # 32
optimizer = optim.SGD(list(encoder.parameters()) +
list(classifier.parameters()),
lr=0.01,
momentum=0.9)
optimizer = utils.optimizer_scheduler(optimizer=optimizer, p=p)
optimizer.zero_grad()
source_feature = encoder(source_image)
# Classification loss
class_pred = classifier(source_feature)
class_loss = classifier_criterion(class_pred, source_label)
class_loss.backward()
optimizer.step()
if (batch_idx + 1) % 50 == 0:
print('[{}/{} ({:.0f}%)]\tClass Loss: {:.6f}'.format(
batch_idx * len(source_image),
len(source_train_loader.dataset),
100. * batch_idx / len(source_train_loader),
class_loss.item()))
if (epoch + 1) % 10 == 0:
test.tester(encoder,
classifier,
discriminator,
source_test_loader,
target_test_loader,
training_mode='source_only')
save_model(encoder, classifier, discriminator, 'source', save_name)
visualize(encoder, 'source', save_name)
def main(_):
# pp.pprint(flags.FLAGS.__flags)
if FLAGS.input_width is None:
FLAGS.input_width = FLAGS.input_height
if FLAGS.output_width is None:
FLAGS.output_width = FLAGS.output_height
if not tf.gfile.Exists(FLAGS.checkpointDir):
tf.gfile.MakeDirs(FLAGS.checkpointDir)
if not tf.gfile.Exists(FLAGS.buckets):
tf.gfile.MakeDirs(FLAGS.buckets)
if not tf.gfile.Exists(FLAGS.summaryDir):
tf.gfile.MakeDirs(FLAGS.summaryDir)
#
# 针对PAI IO 优化:
# 把OSS文件拷贝到运行时目录
# 如果在本地运行请跳过这一步
# if not tf.gfile.Exists(os.path.join('cope_data', FLAGS.dataset)):
# tf.gfile.MakeDirs(os.path.join('cope_data', FLAGS.dataset))
# for file_path in tf.gfile.Glob(os.path.join(FLAGS.buckets, FLAGS.dataset, '*')):
# tf.gfile.Copy(file_path, os.path.join('cope_data', FLAGS.dataset, os.path.basename(file_path)), overwrite=True)
# FLAGS.buckets = './cope_data/'
# 注意, 如果不是在PAI上可以省去上面这一步
# 请注释掉上面5行代码
#
with tf.Session() as sess:
dcgan = DCGAN(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
sample_num=FLAGS.batch_size,
dataset_name=FLAGS.dataset,
input_fname_pattern=FLAGS.input_fname_pattern,
checkpointDir=FLAGS.checkpointDir,
sample_dir=FLAGS.buckets,
config=FLAGS)
# show_all_variables()
if FLAGS.train:
dcgan.train(config=FLAGS)
else:
if not dcgan.load(FLAGS.checkpointDir)[0]:
raise Exception("[!] Train a model first, then run test mode")
option = 0
# 0: 生成1 * batch_size 张图片
# 1: 生成100 * batch_size 张图片
# 2 - 4: 使用不同的模式生成GIF
visualize(sess, dcgan, FLAGS, option)
def test_flip_augmentation():
data, header, dataset_info = make_mpii(source_file, data_dir)
joint_info = dataset_info['joint_info']
transform = FliplrWithPairs(joint_info.mirror_mapping_pairs, 0.5)
transform.debug = True
transform.augmentation = None
pose_dataset = PoseDataset(data, header, dataset_info, cv2_loader, 'mpii', transform=transform)
for _ in range(10):
data = pose_dataset[25]
visualize(to_cv(data['img']), data['coords'], joint_info.stick_figure_edges)
def main():
parser = get_parser()
args = parser.parse_args()
if args.doc:
print __doc__
sys.exit()
g = geosearchclass.GeoSearchClass()
if args.filename:
print 'Using parameters from ' + str(args.filename)
# turn parameter file into dictionary
g.set_params_from_file(args.filename)
else:
if args.default:
print 'Using default search terms'
else:
print 'Using parameters from params.txt'
g.set_params_from_file('params.txt')
g.search()
# print formatted results with extra info to terminal
if args.verbose:
g.print_search_results()
if args.output:
g.write_search_results(args.output)
else:
g.write_search_results()
if args.json:
g.json_search_results(args.json)
if args.visualize:
import utils
filtered_words = utils.tokenize_and_filter(g.search_results)
utils.visualize(filtered_words)
def main(_):
pp.pprint(flags.FLAGS.__flags)
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
with tf.Session(config=tf.ConfigProto(
allow_soft_placement=True, log_device_placement=False)) as sess:
if FLAGS.dataset == 'mnist':
assert False
dcgan = DCGAN(sess, image_size=FLAGS.image_size, batch_size=FLAGS.batch_size,
sample_size = 64,
z_dim = 8192,
d_label_smooth = .25,
generator_target_prob = .75 / 2.,
out_stddev = .075,
out_init_b = - .45,
image_shape=[FLAGS.image_width, FLAGS.image_width, 3],
dataset_name=FLAGS.dataset, is_crop=FLAGS.is_crop, checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir,
generator=Generator(),
train_func=train, discriminator_func=discriminator,
build_model_func=build_model, config=FLAGS,
devices=["gpu:0", "gpu:1", "gpu:2", "gpu:3"] #, "gpu:4"]
)
if FLAGS.is_train:
print "TRAINING"
dcgan.train(FLAGS)
print "DONE TRAINING"
else:
dcgan.load(FLAGS.checkpoint_dir)
OPTION = 2
visualize(sess, dcgan, FLAGS, OPTION)
def train_dex(
NET,
sgd_params,
datasets):
"""
Do DEX training.
"""
initial_learning_rate = sgd_params['start_rate']
learning_rate_decay = sgd_params['decay_rate']
n_epochs = sgd_params['epochs']
batch_size = sgd_params['batch_size']
wt_norm_bound = sgd_params['wt_norm_bound']
result_tag = sgd_params['result_tag']
txt_file_name = "results_dex_{0}.txt".format(result_tag)
img_file_name = "weights_dex_{0}.png".format(result_tag)
# Get the training data and create arrays of start/end indices for
# easy minibatch slicing
Xtr = datasets[0][0]
idx_range = np.arange(Xtr.get_value(borrow=True).shape[0])
Ytr_shared = theano.shared(value=idx_range)
Ytr = T.cast(Ytr_shared, 'int32')
tr_samples = Xtr.get_value(borrow=True).shape[0]
tr_batches = int(np.ceil(float(tr_samples) / batch_size))
tr_bidx = [[i*batch_size, min(tr_samples, (i+1)*batch_size)] for i in range(tr_batches)]
tr_bidx = T.cast(tr_bidx, 'int32')
print "Dataset info:"
print " training samples: {0:d}".format(tr_samples)
print " samples/minibatch: {0:d}, minibatches/epoch: {1:d}".format( \
batch_size, tr_batches)
######################
# BUILD ACTUAL MODEL #
######################
print '... building the model'
# allocate symbolic variables for the data
index = T.lvector() # index to a [mini]batch
epoch = T.scalar() # epoch counter
I = T.lvector() # keys for the training examples
x = NET.input # symbolic matrix for inputs to NET
learning_rate = theano.shared(np.asarray(initial_learning_rate,
dtype=theano.config.floatX))
dex_weight = T.scalar(name='dex_weight', dtype=theano.config.floatX)
# Collect the parameters to-be-optimized
opt_params = NET.proto_params
# Build the expressions for the cost functions
DL = NET.dex_layers[0]
RL_costs = [RL.rica_cost() for RL in NET.rica_layers]
NET_rica_cost = sum([rlc[0] for rlc in RL_costs])
NET_rica_reg_cost = sum([rlc[2] for rlc in RL_costs])
NET_dex_cost = DL.dex_cost(index)
NET_reg_cost = NET.act_reg_cost
NET_cost = NET_dex_cost + NET_reg_cost #NET_rica_cost + NET_dex_cost + NET_reg_cost
NET_metrics = [NET_cost, NET_cost, NET_dex_cost, NET_reg_cost, \
NET_reg_cost]
############################################################################
# Prepare momentum and gradient variables, and construct the updates that #
# Theano will perform on the network parameters. #
############################################################################
NET_grads = []
for param in opt_params:
NET_grads.append(T.grad(NET_cost, param, disconnected_inputs='warn'))
NET_moms = []
for param in opt_params:
NET_moms.append(theano.shared(np.zeros( \
param.get_value(borrow=True).shape, dtype=theano.config.floatX)))
# Compute momentum for the current epoch
mom = ifelse(epoch < 500,
0.5*(1. - epoch/500.) + 0.99*(epoch/500.),
0.99)
# Use a "smoothed" learning rate, to ease into optimization
gentle_rate = ifelse(epoch < 10,
((epoch / 10.) * learning_rate),
learning_rate)
# Update the step direction using a momentus update
NET_updates = OrderedDict()
for i in range(len(opt_params)):
NET_updates[NET_moms[i]] = mom * NET_moms[i] + (1. - mom) * NET_grads[i]
# ... and take a step along that direction
for i in range(len(opt_params)):
param = opt_params[i]
grad_i = NET_grads[i]
print("grad_{0:d}.owner.op: {1:s}".format(i, str(grad_i.owner.op)))
NET_param = param - (gentle_rate * NET_updates[NET_moms[i]])
# Clip the updated param to bound its norm (where applicable)
if (NET.clip_params.has_key(param) and \
(NET.clip_params[param] == 1)):
NET_norms = T.sum(NET_param**2, axis=1, keepdims=1)
NET_scale = T.clip(T.sqrt(wt_norm_bound / NET_norms), 0., 1.)
NET_updates[param] = NET_param * NET_scale
else:
NET_updates[param] = NET_param
# updates for dex layer
NET_updates[DL.W] = T.inc_subtensor(T.take(DL.W, index, axis=0), \
-gentle_rate*DL.dW)
NET_updates[DL.b] = T.inc_subtensor(T.take(DL.b, index), \
-gentle_rate*DL.db)
# Compile theano functions for training. These return the training cost
# and update the model parameters.
train_NET = theano.function(inputs=[epoch, index, dex_weight], \
outputs=NET_metrics, \
updates=NET_updates, \
givens={ x: T.take(Xtr, index, axis=0) }, \
on_unused_input='warn')
# Theano function to decay the learning rate, this is separate from the
# training function because we only want to do this once each epoch instead
# of after each minibatch.
set_learning_rate = theano.function(inputs=[], outputs=learning_rate,
updates={learning_rate: learning_rate * learning_rate_decay})
###############
# TRAIN MODEL #
###############
print '... training'
epoch_counter = 0
start_time = time.clock()
results_file = open(txt_file_name, 'wb')
results_file.write("ensemble description: ")
results_file.write(" **TODO: Write code for this.**\n")
results_file.flush()
b_index = npr.randint(0, high=tr_samples, size=(batch_size,))
train_metrics = train_NET(0, b_index, 0.0)
while epoch_counter < n_epochs:
######################################################
# Process some number of minibatches for this epoch. #
######################################################
e_time = time.clock()
epoch_counter = epoch_counter + 1
train_metrics = [0.0 for val in train_metrics]
for minibatch_index in xrange(tr_batches):
# Compute update for some joint supervised/unsupervised minibatch
b_index = npr.randint(0, high=tr_samples, size=(batch_size,))
dwight = 1.0 #0.0 if (epoch_counter <= 5) else 0.1
batch_metrics = train_NET(epoch_counter, b_index, dwight)
train_metrics = [a+b for (a, b) in zip(train_metrics, batch_metrics)]
train_metrics = [(val / tr_batches) for val in train_metrics]
# Update the learning rate
new_learning_rate = set_learning_rate()
# Report and save progress.
print("epoch {0:d}: total={1:.4f}, rica={2:.4f}, dex={3:.4f}, reg={4:.4f}, rica_reg:{5:.4f}".format( \
epoch_counter, train_metrics[0], train_metrics[1], train_metrics[2], \
train_metrics[3], train_metrics[4]))
print("--time: {0:.4f}".format((time.clock() - e_time)))
# Save first layer weights to an image locally
utils.visualize(NET, 0, 0, img_file_name)
def test_gc_pair():
# Simple test code, to check that everything is basically functional.
print("TESTING...")
# Initialize a source of randomness
rng = np.random.RandomState(1234)
# Load some data to train/validate/test with
dataset = 'data/mnist.pkl.gz'
datasets = load_udm(dataset, zero_mean=False)
Xtr = datasets[0][0]
tr_samples = Xtr.get_value(borrow=True).shape[0]
data_dim = Xtr.get_value(borrow=True).shape[1]
mm_proj_dim = 250
# Do moment matching in some transformed space
#P = np.identity(data_dim)
P = npr.randn(data_dim, mm_proj_dim) / np.sqrt(float(mm_proj_dim))
P = theano.shared(value=P.astype(theano.config.floatX), name='P_proj')
target_mean, target_cov = projected_moments(Xtr, P, ary_type='theano')
P = P.get_value(borrow=False).astype(theano.config.floatX)
###########################
# Setup generator network #
###########################
# Choose some parameters for the generative network
gn_params = {}
gn_config = [200, 1000, 1000, 28*28]
gn_params['mlp_config'] = gn_config
gn_params['lam_l2a'] = 1e-3
gn_params['vis_drop'] = 0.0
gn_params['hid_drop'] = 0.0
gn_params['bias_noise'] = 0.1
gn_params['out_type'] = 'bernoulli'
gn_params['activation'] = relu_actfun
gn_params['init_scale'] = 4.0
# Symbolic input matrix to generator network
Xp_sym = T.matrix(name='Xp_sym')
Xd_sym = T.matrix(name='Xd_sym')
# Initialize a generator network object
GN = GenNet(rng=rng, Xp=Xp_sym, prior_sigma=1.0, params=gn_params)
###############################
# Setup discriminator network #
###############################
# Set some reasonable mlp parameters
dn_params = {}
# Set up some proto-networks
pc0 = [28*28, (250, 4), (250, 4), 11]
dn_params['proto_configs'] = [pc0]
# Set up some spawn networks
sc0 = {'proto_key': 0, 'input_noise': 0.1, 'bias_noise': 0.1, 'do_dropout': True}
#sc1 = {'proto_key': 0, 'input_noise': 0.1, 'bias_noise': 0.1, 'do_dropout': True}
dn_params['spawn_configs'] = [sc0]
dn_params['spawn_weights'] = [1.0]
# Set remaining params
dn_params['ear_type'] = 2
dn_params['ear_lam'] = 0.0
dn_params['lam_l2a'] = 1e-3
dn_params['vis_drop'] = 0.2
dn_params['hid_drop'] = 0.5
# Initialize a network object to use as the discriminator
DN = PeaNet(rng=rng, Xd=Xd_sym, params=dn_params)
########################################################################
# Initialize the joint controller for the generator/discriminator pair #
########################################################################
gcp_params = {}
gcp_params['d_net'] = DN
gcp_params['g_net'] = GN
gcp_params['lam_l2d'] = 1e-2
gcp_params['mom_mix_rate'] = 0.05
gcp_params['mom_match_weight'] = 0.05
gcp_params['mom_match_proj'] = P
gcp_params['target_mean'] = target_mean
gcp_params['target_cov'] = target_cov
# Initialize a GCPair instance using the previously constructed generator and
# discriminator networks.
GCP = GCPair(rng=rng, Xd=Xd_sym, Xp=Xp_sym, d_net=DN, g_net=GN, \
data_dim=28*28, params=gcp_params)
gn_learn_rate = 0.02
dn_learn_rate = 0.01
GCP.set_gn_sgd_params(learn_rate=gn_learn_rate, momentum=0.98)
GCP.set_dn_sgd_params(learn_rate=dn_learn_rate, momentum=0.98)
# Init generator's mean and covariance estimates with many samples
GCP.init_moments(10000)
batch_idx = T.lvector('batch_idx')
batch_sample = theano.function(inputs=[ batch_idx ], \
outputs=Xtr.take(batch_idx, axis=0))
for i in range(750000):
tr_idx = npr.randint(low=0,high=tr_samples,size=(100,)).astype(np.int32)
Xn_np = GN.sample_from_prior(100)
Xd_batch = batch_sample(tr_idx)
Xd_batch = Xd_batch.astype(theano.config.floatX)
Xn_batch = Xn_np.astype(theano.config.floatX)
all_idx = np.arange(200)
data_idx = all_idx[:100]
noise_idx = all_idx[100:]
scale = min(1.0, float(i+1)/10000.0)
GCP.set_disc_weights(dweight_gn=scale, dweight_dn=scale)
outputs = GCP.train_joint(Xd_batch, Xn_batch, data_idx, noise_idx)
mom_match_cost = 1.0 * outputs[0]
disc_cost_gn = 1.0 * outputs[1]
disc_cost_dn = 1.0 * outputs[2]
if ((i+1 % 100000) == 0):
gn_learn_rate = gn_learn_rate * 0.7
dn_learn_rate = dn_learn_rate * 0.7
GCP.set_gn_sgd_params(learn_rate=gn_learn_rate, momentum=0.98)
GCP.set_dn_sgd_params(learn_rate=dn_learn_rate, momentum=0.98)
if ((i % 1000) == 0):
print("batch: {0:d}, mom_match_cost: {1:.4f}, disc_cost_gn: {2:.4f}, disc_cost_dn: {3:.4f}".format( \
i, mom_match_cost, disc_cost_gn, disc_cost_dn))
if ((i % 5000) == 0):
file_name = "GCP_SAMPLES_b{0:d}.png".format(i)
Xs = GCP.sample_from_gn(200)
utils.visualize_samples(Xs, file_name)
file_name = "GCP_WEIGHTS_b{0:d}.png".format(i)
utils.visualize(GCP.DN, 0, 0, file_name)
print("TESTING COMPLETE!")
return
kld_data = 1.0 * outputs[2]
if ((i + 1) % 5000 == 0):
print(" nll_data: {0:.4f}, kld_data: {1:.4f}".format( \
nll_data, kld_data))
if ((i+1) % 100000 == 0):
learn_rate = learn_rate * 0.8
if (i % 1000 == 0):
print("batch: {0:d}, mom_match_cost: {1:.4f}, disc_dn: {2:.6f}, disc_gn: {3:.6f}, nll: {4:.4f}, kld: {5:.4f}".format( \
i, mom_match_cost, disc_dn, disc_gn, nll_cost, kld_cost))
if (i % 5000 == 0):
# draw independent samples from generative model's prior
file_name = "VCG_SAMPLES_b{0:d}.png".format(i)
Xs = VCG.sample_from_gn(200)
utils.visualize_samples(Xs, file_name)
file_name = "VCG_WEIGHTS_b{0:d}.png".format(i)
utils.visualize(VCG.DN, 0, 0, file_name)
# draw "markov chain" samples initiated from training data
file_name = "VCG_SAMPLES_a{0:d}.png".format(i)
Xd_samps = np.repeat(Xd_batch[0:10,:], 3, axis=0)
sample_lists = GIP.sample_gil_from_data(Xd_samps, loop_iters=10)
Xs = np.vstack(sample_lists["data samples"])
utils.visualize_samples(Xs, file_name)
print("TESTING COMPLETE!")
##############
# EYE BUFFER #
##############
def test_mlp(
mlp_params,
sgd_params,
datasets):
"""
Datasets should be a three-tuple in which each item is a (matrix, vector)
pair of (inputs, labels) for (training, validation, testing).
"""
initial_learning_rate = sgd_params['start_rate']
learning_rate_decay = sgd_params['decay_rate']
n_epochs = sgd_params['epochs']
batch_size = sgd_params['batch_size']
mlp_type = sgd_params['mlp_type']
wt_norm_bound = sgd_params['wt_norm_bound']
result_tag = sgd_params['result_tag']
txt_file_name = "results_{0}.txt".format(result_tag)
img_file_name = "weights_{0}.png".format(result_tag)
Xtr, Ytr = datasets[0]
Xva, Yva = datasets[1]
Xte, Yte = datasets[2]
# compute number of minibatches for training, validation and testing
n_train_batches = Xtr.get_value(borrow=True).shape[0] / batch_size
n_valid_batches = Xva.get_value(borrow=True).shape[0] / batch_size
n_test_batches = Xte.get_value(borrow=True).shape[0] / batch_size
print "train batches: {0:d}, valid batches: {1:d}, test_batches: {2:d}".format( \
n_train_batches, n_valid_batches, n_test_batches)
######################
# BUILD ACTUAL MODEL #
######################
print '... building the model'
# allocate symbolic variables for the data
index = T.lscalar() # index to a [mini]batch
epoch = T.scalar() # epoch counter
x = T.matrix('x') # data is presented as rasterized images
y = T.ivector('y') # labels are presented as integer categories
learning_rate = theano.shared(np.asarray(initial_learning_rate,
dtype=theano.config.floatX))
rng = np.random.RandomState(12345)
# construct the MLP class
NET = DEV_MLP(rng=rng, input=x, params=mlp_params)
# Build the expressions for the cost functions. If training without SDE or
# DEV regularization, the DEV loss/cost will be used, but the weights for
# DEV regularization on each layer will be set to 0 before training.
sde_cost = NET.sde_class_loss(y) + NET.sde_reg_loss
dev_cost = 0.5 * (NET.dev_class_loss(y) + NET.dev_dev_loss) + NET.dev_reg_loss
NET_metrics = [NET.raw_errors(y), NET.raw_class_loss(y), NET.dev_dev_loss, NET.raw_reg_loss]
############################################################################
# Compile testing and validation models. These models are evaluated on #
# batches of the same size as used in training. Trying to jam a large #
# validation or test set through the net may take too much memory. #
############################################################################
test_model = theano.function(inputs=[index],
outputs=NET_metrics,
givens={
x: Xte[index * batch_size:(index + 1) * batch_size],
y: T.cast(Yte[index * batch_size:(index + 1) * batch_size], 'int32')})
#theano.printing.pydotprint(test_model, outfile="test_file.png",
# var_with_name_simple=True)
validate_model = theano.function(inputs=[index],
outputs=NET_metrics,
givens={
x: Xva[index * batch_size:(index + 1) * batch_size],
y: T.cast(Yva[index * batch_size:(index + 1) * batch_size], 'int32')})
#theano.printing.pydotprint(validate_model, outfile="validate_file.png",
# var_with_name_simple=True)
############################################################################
# Prepare momentum and gradient variables, and construct the updates that #
# Theano will perform on the network parameters. #
############################################################################
sde_grads = []
dev_grads = []
for param in NET.params:
sde_grads.append(T.grad(sde_cost, param))
dev_grads.append(T.grad(dev_cost, param))
sde_moms = []
dev_moms = []
for param in NET.params:
sde_moms.append(theano.shared(np.zeros( \
param.get_value(borrow=True).shape, dtype=theano.config.floatX)))
dev_moms.append(theano.shared(np.zeros( \
param.get_value(borrow=True).shape, dtype=theano.config.floatX)))
# Compute momentum for the current epoch
mom = ifelse(epoch < 500,
0.5*(1. - epoch/500.) + 0.99*(epoch/500.),
0.99)
# Use a "smoothed" learning rate, to ease into optimization
gentle_rate = ifelse(epoch < 5,
(epoch / 5.0) * learning_rate,
learning_rate)
# Update the step direction using a momentus update
sde_updates = OrderedDict()
dev_updates = OrderedDict()
for i in range(len(NET.params)):
sde_updates[sde_moms[i]] = mom * sde_moms[i] + (1. - mom) * sde_grads[i]
dev_updates[dev_moms[i]] = mom * dev_moms[i] + (1. - mom) * dev_grads[i]
# ... and take a step along that direction
for i in range(len(NET.params)):
param = NET.params[i]
sde_param = param - (gentle_rate * sde_updates[sde_moms[i]])
dev_param = param - (gentle_rate * dev_updates[dev_moms[i]])
# Clip the updated param to bound its norm (where applicable)
if (NET.clip_params.has_key(param) and \
(NET.clip_params[param] == 1)):
sde_norms = T.sum(sde_param**2, axis=1).reshape((sde_param.shape[0],1))
sde_scale = T.clip(T.sqrt(wt_norm_bound / sde_norms), 0., 1.)
sde_updates[param] = sde_param * sde_scale
dev_norms = T.sum(dev_param**2, axis=1).reshape((dev_param.shape[0],1))
dev_scale = T.clip(T.sqrt(wt_norm_bound / dev_norms), 0., 1.)
dev_updates[param] = dev_param * dev_scale
else:
sde_updates[param] = sde_param
dev_updates[param] = dev_param
# Compile theano functions for training. These return the training cost
# update the model parameters.
train_sde = theano.function(inputs=[epoch, index], outputs=NET_metrics,
updates=sde_updates,
givens={
x: Xtr[index * batch_size:(index + 1) * batch_size],
y: T.cast(Ytr[index * batch_size:(index + 1) * batch_size], 'int32')})
train_dev = theano.function(inputs=[epoch, index], outputs=NET_metrics,
updates=dev_updates,
givens={
x: Xtr[index * batch_size:(index + 1) * batch_size],
y: T.cast(Ytr[index * batch_size:(index + 1) * batch_size], 'int32')})
# Theano function to decay the learning rate, this is separate from the
# training function because we only want to do this once each epoch instead
# of after each minibatch.
set_learning_rate = theano.function(inputs=[], outputs=learning_rate,
updates={learning_rate: learning_rate * learning_rate_decay})
###############
# TRAIN MODEL #
###############
print '... training'
best_params = None
best_validation_errors = np.inf
best_iter = 0
test_score = 0.
epoch_counter = 0
start_time = time.clock()
results_file = open(txt_file_name, 'wb')
results_file.write("mlp_type: {0}\n".format(mlp_type))
results_file.write("lam_l2a: {0:.4f}\n".format(mlp_params['lam_l2a']))
results_file.write("dev_types: {0}\n".format(str(mlp_params['dev_types'])))
results_file.write("dev_lams: {0}\n".format(str(mlp_params['dev_lams'])))
results_file.flush()
e_time = time.clock()
epoch_metrics = train_sde(1, 1)
while epoch_counter < n_epochs:
# Train this epoch
epoch_counter = epoch_counter + 1
for minibatch_index in xrange(n_train_batches):
if ((epoch_counter <= 0) or (mlp_type == 'sde')):
batch_metrics = train_sde(epoch_counter, minibatch_index)
else:
batch_metrics = train_dev(epoch_counter, minibatch_index)
epoch_metrics = [(em + bm) for (em, bm) in zip(epoch_metrics, batch_metrics)]
# Compute classification errors on validation set
validation_metrics = [validate_model(i) for i in xrange(n_valid_batches)]
this_validation_errors = np.sum([m[0] for m in validation_metrics])
# Report and save progress.
epoch_metrics = [(float(v) / float(n_train_batches)) for v in epoch_metrics]
tag = (" **" if (this_validation_errors < best_validation_errors) else " ")
print "epoch {0}: t_err={1:.2f}, t_loss={2:.4f}, t_dev={3:.4f}, t_reg={4:.4f}, v_err={5:d}{6}".format( \
epoch_counter, epoch_metrics[0], epoch_metrics[1], epoch_metrics[2], epoch_metrics[3], \
int(this_validation_errors), tag)
print "--time: {0:.4f}".format((time.clock() - e_time))
epoch_metrics = [0.0 for v in epoch_metrics]
e_time = time.clock()
best_validation_errors = min(best_validation_errors, this_validation_errors)
results_file.write("{0}\n".format(this_validation_errors))
results_file.flush()
new_learning_rate = set_learning_rate()
# Save first layer weights to an image locally
utils.visualize(NET, 0, img_file_name)
end_time = time.clock()
# Compute loss on test set
test_metrics = [test_model(i) for i in xrange(n_test_batches)]
test_score = np.sum([m[0] for m in test_metrics])
print(('Optimization complete. Best validation score of %f %% '
'obtained at iteration %i, with test performance %f %%') %
(best_validation_errors * 100., best_iter, test_score * 100.))
print >> sys.stderr, ('The code for file ' +
os.path.split(__file__)[1] +
' ran for %.2fm' % ((end_time - start_time) / 60.))
def run(dry_run=False):
data = MnistDataset(batch_size=500,
testset_size=1000,
normalize=False,
as_one_hot=True)
stiff_start, stiff_end, stiff_decay = (0.005, 0.005, 0.99)
stiff_update = lambda s: s * stiff_decay + (1 - stiff_decay) * stiff_end
input_dim = data.size('trn')[0][0]
label_dim = data.size('trn')[1][0]
class Model(ECA):
def structure(self):
if dry_run:
self.U = Input('U', input_dim)
self.Y = Input('Y', label_dim)
RegressionLayer('Z', 3, (self.U, self.Y), rect,
min_tau=0.0, stiffx=1.0,
merge_op=lambda u, y: rect(u + y)),
else:
self.U = Input('U', input_dim)
self.Y = Input('Y', label_dim)
RegressionLayer('Z', 100, (self.U, self.Y), rect,
min_tau=0.0, stiffx=1.0,
merge_op=lambda u, y: u)
mdl = Model()
trn_iters = 10000 if not dry_run else 1
#mdl.Y.nonlin_est = lambda x: T.nnet.softmax(x.T).T
print 'Training', trn_iters, 'iterations'
d = data.get('trn')
stiff = stiff_start
weights = []
try:
trn_sig = mdl.new_signals(data.samples('trn'))
trne_sig = mdl.new_signals(data.samples('trn'))
val_sig = mdl.new_signals(data.samples('val'))
tst_sig = mdl.new_signals(data.samples('tst'))
for i in range(1, trn_iters + 1):
t = time.time()
# Update model
trn_sig.propagate(d.samples, d.labels)
trn_sig.adapt_layers(stiff)
stiff = stiff_update(stiff)
if i % 200 == 0:
calculate_accuracy(trne_sig, val_sig, tst_sig, data)
# Progress prints
if (i % 20 == 0):
weights += [mdl.first_phi()[:-10, :]]
i_str = "I %4d:" % (i)
t_str = 't: %.2f s' % (time.time() - t)
t = time.time()
stiff_str = "stiff: %5.3f" % stiff
tostr = lambda t: "{" + ", ".join(["%s: %6.2f" % (n, v) for (n, v) in t]) + "}"
var_str = " logvar:" + tostr(trn_sig.variance())
a_str = " avg: " + tostr(trn_sig.avg_levels())
phi_norms = mdl.phi_norms()
phi_larg_str = " |phinL|: " + tostr(map(lambda a: (a[0], np.sum(a[1] > 1.1)), phi_norms))
phi_ones_str = " |phin1|: " + tostr(map(lambda a: (a[0], np.sum(np.isclose(a[1], 1.0, atol=0.1))), phi_norms))
phi_zero_str = " |phin0|: " + tostr(map(lambda a: (a[0], np.sum(np.isclose(a[1], 0.0, atol=0.5))), phi_norms))
phi_str = " |phi|: " + tostr(map(lambda a: (a[0], np.average(a[1])), phi_norms))
E_str = " E: " + tostr(trn_sig.energy())
y_acc = " yacc: %.2f" % (d.accuracy(trn_sig.y_est()) * 100.)
Y_acc = " Yacc: %.2f" % (d.accuracy(trn_sig.Y.var.get_value()) * 100.)
Y_cost = " Yerr: %.3f" % np.mean(trn_sig.Y.energy())
U_cost = " Uerr: %.3f" % np.mean(trn_sig.U.energy())
print i_str, stiff_str, t_str, y_acc, Y_acc, Y_cost, U_cost, phi_ones_str
#print var_str, a_str, phi_str
except KeyboardInterrupt:
pass
if dry_run:
return
try:
print 'Calculating final accuracy'
calculate_accuracy(trne_sig, val_sig, tst_sig, data)
if False:
visualize(weights[0])
except KeyboardInterrupt:
pass
def train_mlp(
NET,
mlp_params,
sgd_params,
datasets):
"""
Train NET using purely supervised data.
This trains a standard supervised MLP, using any of: no droppish stuff,
standard dropout, or dropout ensemble variance regularization. Datasets
should be a three-tuple, where each item is an (X, Y) pair of observation
matrix X and class vector Y. The (X, Y) pairs will be used for training,
validation, and testing respectively.
"""
initial_learning_rate = sgd_params['start_rate']
learning_rate_decay = sgd_params['decay_rate']
n_epochs = sgd_params['epochs']
batch_size = sgd_params['batch_size']
mlp_type = sgd_params['mlp_type']
wt_norm_bound = sgd_params['wt_norm_bound']
result_tag = sgd_params['result_tag']
txt_file_name = "results_mlp_{0}.txt".format(result_tag)
img_file_name = "weights_mlp_{0}.png".format(result_tag)
###########################################################################
# We will use minibatches for training, as well as for computing stats #
# over the validation and testing sets. For Theano reasons, it will be #
# easiest if we set up arrays storing the start/end index of each batch #
# w.r.t. the relevant observation/class matrices/vectors. #
###########################################################################
# Get the training observations and classes
Xtr, Ytr = (datasets[0][0], T.cast(datasets[0][1], 'int32'))
tr_samples = Xtr.get_value(borrow=True).shape[0]
tr_batches = int(np.ceil(tr_samples / float(batch_size)))
tr_bidx = [[i*batch_size, min(tr_samples, (i+1)*batch_size)] \
for i in range(tr_batches)]
tr_bidx = theano.shared(value=np.asarray(tr_bidx, dtype=theano.config.floatX))
tr_bidx = T.cast(tr_bidx, 'int32')
# Get the validation and testing observations and classes
Xva, Yva = (datasets[1][0], T.cast(datasets[1][1], 'int32'))
Xte, Yte = (datasets[2][0], T.cast(datasets[2][1], 'int32'))
va_samples = Xva.get_value(borrow=True).shape[0]
te_samples = Xte.get_value(borrow=True).shape[0]
va_batches = int(np.ceil(va_samples / 100.))
te_batches = int(np.ceil(te_samples / 100.))
va_bidx = [[i*100, min(va_samples, (i+1)*100)] for i in range(va_batches)]
te_bidx = [[i*100, min(te_samples, (i+1)*100)] for i in range(te_batches)]
va_bidx = theano.shared(value=np.asarray(va_bidx, dtype=theano.config.floatX))
te_bidx = theano.shared(value=np.asarray(te_bidx, dtype=theano.config.floatX))
va_bidx = T.cast(va_bidx, 'int32')
te_bidx = T.cast(te_bidx, 'int32')
# Print some useful information about the dataset
print "dataset info:"
print " training samples: {0:d}".format(tr_samples)
print " samples/minibatch: {0:d}, minibatches/epoch: {1:d}".format( \
batch_size, tr_batches)
print " validation samples: {0:d}, testing samples: {1:d}".format( \
va_samples, te_samples)
######################
# build actual model #
######################
print '... building the model'
# allocate symbolic variables for the data
index = T.lscalar() # index to a [mini]batch
epoch = T.scalar() # epoch counter
su_idx = T.lscalar() # symbolic batch index into supervised samples
un_idx = T.lscalar() # symbolic batch index into unsupervised samples
x = NET.input # some observations have labels
y = T.ivector('y') # the labels are presented as integer categories
learning_rate = theano.shared(np.asarray(initial_learning_rate, \
dtype=theano.config.floatX))
# Build the expressions for the cost functions. if training without sde or
# dev regularization, the dev loss/cost will be used, but the weights for
# dev regularization on each layer will be set to 0 before training.
sde_cost = NET.sde_cost(y)
dev_cost = NET.dev_cost(y)
NET_metrics = [NET.class_errors(y), NET.raw_class_loss(y), \
NET.dev_reg_loss(y), NET.raw_reg_loss]
############################################################################
# Compile testing and validation models. these models are evaluated on #
# batches of the same size as used in training. trying to jam a large #
# validation or test set through the net may take too much memory. #
############################################################################
test_model = theano.function(inputs=[index], \
outputs=NET_metrics, \
givens={ \
x: Xte[te_bidx[index,0]:te_bidx[index,1],:], \
y: Yte[te_bidx[index,0]:te_bidx[index,1]]})
validate_model = theano.function(inputs=[index], \
outputs=NET_metrics, \
givens={ \
x: Xva[va_bidx[index,0]:va_bidx[index,1],:], \
y: Yva[va_bidx[index,0]:va_bidx[index,1]]})
############################################################################
# prepare momentum and gradient variables, and construct the updates that #
# theano will perform on the network parameters. #
############################################################################
opt_params = NET.mlp_params
if sgd_params.has_key('top_only'):
if sgd_params['top_only']:
opt_params = NET.class_params
sde_grads = []
dev_grads = []
for param in opt_params:
sde_grads.append(T.grad(sde_cost, param))
dev_grads.append(T.grad(dev_cost, param))
sde_moms = []
dev_moms = []
for param in opt_params:
sde_moms.append(theano.shared(np.zeros( \
param.get_value(borrow=True).shape, dtype=theano.config.floatX)))
dev_moms.append(theano.shared(np.zeros( \
param.get_value(borrow=True).shape, dtype=theano.config.floatX)))
# compute momentum for the current epoch
mom = ifelse(epoch < 500,
0.5*(1. - epoch/500.) + 0.99*(epoch/500.),
0.99)
# use a "smoothed" learning rate, to ease into optimization
gentle_rate = ifelse(epoch < 5,
(epoch / 5.) * learning_rate,
learning_rate)
# update the step direction using a momentus update
sde_updates = OrderedDict()
dev_updates = OrderedDict()
for i in range(len(opt_params)):
sde_updates[sde_moms[i]] = mom * sde_moms[i] + (1. - mom) * sde_grads[i]
dev_updates[dev_moms[i]] = mom * dev_moms[i] + (1. - mom) * dev_grads[i]
# ... and take a step along that direction
for i in range(len(opt_params)):
param = opt_params[i]
sde_param = param - (gentle_rate * sde_updates[sde_moms[i]])
dev_param = param - (gentle_rate * dev_updates[dev_moms[i]])
# clip the updated param to bound its norm (where applicable)
if (NET.clip_params.has_key(param) and \
(NET.clip_params[param] == 1)):
sde_norms = T.sum(sde_param**2, axis=1, keepdims=1)
sde_scale = T.clip(T.sqrt(wt_norm_bound / sde_norms), 0., 1.)
sde_updates[param] = sde_param * sde_scale
dev_norms = T.sum(dev_param**2, axis=1, keepdims=1)
dev_scale = T.clip(T.sqrt(wt_norm_bound / dev_norms), 0., 1.)
dev_updates[param] = dev_param * dev_scale
else:
sde_updates[param] = sde_param
dev_updates[param] = dev_param
# compile theano functions for training. these return the training cost
# and update the model parameters.
train_sde = theano.function(inputs=[epoch, index], outputs=NET_metrics, \
updates=sde_updates, \
givens={ \
x: Xtr[tr_bidx[index,0]:tr_bidx[index,1],:], \
y: Ytr[tr_bidx[index,0]:tr_bidx[index,1]]})
train_dev = theano.function(inputs=[epoch, index], outputs=NET_metrics, \
updates=dev_updates, \
givens={ \
x: Xtr[tr_bidx[index,0]:tr_bidx[index,1],:], \
y: Ytr[tr_bidx[index,0]:tr_bidx[index,1]]})
# theano function to decay the learning rate, this is separate from the
# training function because we only want to do this once each epoch instead
# of after each minibatch.
set_learning_rate = theano.function(inputs=[], outputs=learning_rate, \
updates={learning_rate: learning_rate * learning_rate_decay})
###############
# train model #
###############
print '... training'
validation_error = 100.
test_error = 100.
min_validation_error = 100.
min_test_error = 100.
epoch_counter = 0
start_time = time.clock()
results_file = open(txt_file_name, 'wb')
results_file.write("mlp_type: {0}\n".format(mlp_type))
results_file.write("lam_l2a: {0:.4f}\n".format(mlp_params['lam_l2a']))
results_file.write("dev_types: {0}\n".format(str(mlp_params['dev_types'])))
results_file.write("dev_lams: {0}\n".format(str(mlp_params['dev_lams'])))
results_file.flush()
e_time = time.clock()
# get array of epoch metrics (on a single minibatch)
epoch_metrics = train_sde(1, 0)
validation_metrics = [0. for v in epoch_metrics]
test_metrics = [0. for v in epoch_metrics]
# compute metrics on testing set
while epoch_counter < n_epochs:
######################################################
# process some number of minibatches for this epoch. #
######################################################
NET.set_bias_noise(0.1)
epoch_counter = epoch_counter + 1
epoch_metrics = [0. for v in epoch_metrics]
for b_idx in xrange(tr_batches):
# compute update for some this minibatch
if ((epoch_counter <= 0) or (mlp_type == 'sde')):
batch_metrics = train_sde(epoch_counter, b_idx)
else:
batch_metrics = train_dev(epoch_counter, b_idx)
epoch_metrics = [(em + bm) for (em, bm) in zip(epoch_metrics, batch_metrics)]
# Compute 'averaged' values over the minibatches
epoch_metrics[0] = 100 * (float(epoch_metrics[0]) / tr_samples)
epoch_metrics[1:] = [(float(v) / tr_batches) for v in epoch_metrics[1:]]
train_error = epoch_metrics[0]
train_loss = epoch_metrics[1]
# update the learning rate
new_learning_rate = set_learning_rate()
######################################################
# validation, testing, and general diagnostic stuff. #
######################################################
NET.set_bias_noise(0.0)
# compute metrics on validation set
validation_metrics = [0. for v in epoch_metrics]
for b_idx in xrange(va_batches):
batch_metrics = validate_model(b_idx)
validation_metrics = [(em + bm) for (em, bm) in zip(validation_metrics, batch_metrics)]
# Compute 'averaged' values over the minibatches
validation_error = 100 * (float(validation_metrics[0]) / va_samples)
validation_metrics[1:] = [(float(v) / va_batches) for v in validation_metrics[1:]]
validation_loss = validation_metrics[1]
# compute test error if new best validation error was found
tag = " "
# compute metrics on testing set
test_metrics = [0. for v in epoch_metrics]
for b_idx in xrange(te_batches):
batch_metrics = test_model(b_idx)
test_metrics = [(em + bm) for (em, bm) in zip(test_metrics, batch_metrics)]
# Compute 'averaged' values over the minibatches
test_error = 100 * (float(test_metrics[0]) / te_samples)
test_metrics[1:] = [(float(v) / te_batches) for v in test_metrics[1:]]
test_loss = test_metrics[1]
if (validation_error < min_validation_error):
min_validation_error = validation_error
min_test_error = test_error
tag = ", test={0:.2f}".format(test_error)
results_file.write("{0:.2f} {1:.2f} {2:.2f} {3:.4f} {4:.4f} {5:.4f}\n".format( \
train_error, validation_error, test_error, train_loss, validation_loss, test_loss))
results_file.flush()
# report and save progress.
print "epoch {0:d}: t_err={1:.2f}, t_loss={2:.4f}, t_dev={3:.4f}, t_reg={4:.4f}, valid={5:.2f}{6}".format( \
epoch_counter, epoch_metrics[0], epoch_metrics[1], epoch_metrics[2], epoch_metrics[3], \
validation_error, tag)
print "--time: {0:.4f}".format((time.clock() - e_time))
e_time = time.clock()
# save first layer weights to an image locally
utils.visualize(NET, 0, img_file_name)
print("optimization complete. best validation error {0:.4f}, with test error {1:.4f}".format( \
(min_validation_error), (min_test_error)))
data_idx = all_idx[:100]
noise_idx = all_idx[100:]
scale = min(1.0, float(i+1)/10000.0)
GCP.set_disc_weights(dweight_gn=scale, dweight_dn=scale)
outputs = GCP.train_joint(Xd_batch, Xn_batch, data_idx, noise_idx)
mom_match_cost = 1.0 * outputs[0]
disc_cost_gn = 1.0 * outputs[1]
disc_cost_dn = 1.0 * outputs[2]
if ((i+1 % 100000) == 0):
gn_learn_rate = gn_learn_rate * 0.7
dn_learn_rate = dn_learn_rate * 0.7
GCP.set_sgd_params(lr_gn=gn_learn_rate, lr_dn=dn_learn_rate, \
mom_1=0.8, mom_2=0.98)
if ((i % 1000) == 0):
print("batch: {0:d}, mom_match_cost: {1:.4f}, disc_cost_gn: {2:.4f}, disc_cost_dn: {3:.4f}".format( \
i, mom_match_cost, disc_cost_gn, disc_cost_dn))
if ((i % 5000) == 0):
file_name = "GCP_SAMPLES_b{0:d}.png".format(i)
Xs = GCP.sample_from_gn(200)
utils.visualize_samples(Xs, file_name)
file_name = "GCP_WEIGHTS_b{0:d}.png".format(i)
utils.visualize(GCP.DN, 0, 0, file_name)
print("TESTING COMPLETE!")
##############
# EYE BUFFER #
##############
def run(dry_run=False):
data = MnistDataset(batch_size=100,
testset_size=1000,
normalize=False)
stiff_start, stiff_end, stiff_decay = (0.05, 0.05, 0.90)
stiff_update = lambda s: s * stiff_decay + (1 - stiff_decay) * stiff_end
input_dim = data.size('trn')[0][0]
class Model(ECA):
def structure(self):
if dry_run:
self.U = Input('U', input_dim)
self.X = Layer('X', 3, self.U, rect, 1.0)
else:
self.U = Input('U', input_dim)
self.X1 = Layer('X1', 20, self.U, rect, min_tau=0., stiffx=1.0)
self.X2 = Layer('X2', 5, self.X1, rect, min_tau=0., stiffx=1.0)
self.X2.disable()
mdl = Model()
trn_iters = 1000 if not dry_run else 1
print 'Training', trn_iters, 'iterations'
d = data.get('trn')
stiff = stiff_start
weights = []
try:
trn_sig = mdl.new_signals(data.samples('trn'))
for i in range(1, trn_iters + 1):
t = time.time()
# Update model
trn_sig.propagate(d.samples, None)
trn_sig.adapt_layers(stiff)
# Enable second layer once the first layer has settled
if i == 250:
mdl.X2.enable()
stiff = stiff_update(stiff)
if CONTINUOUS_VISUALIZATION and i % (1 if SAVE_MOVIE else 5) == 0:
import matplotlib.pyplot as plt
if SAVE_MOVIE and i == 1:
import matplotlib.animation as animation
fig, ax = plt.subplots(2, 2)
fig.set_size_inches(10.5, 10.5)
writer = animation.writers['ffmpeg'](fps=10, bitrate=1000)
writer.setup(fig, 'eca-multilayer-rec.mp4', dpi=100)
elif not SAVE_MOVIE:
fig, ax = plt.subplots(2, 2)
fig.set_size_inches(10.5, 10.5)
u, U, X, phi, Q, = (d.samples,
trn_sig.U.var.get_value(),
trn_sig.U.next.var.get_value(),
mdl.first_phi(),
mdl.U.next.Q.get_value())
X2 = trn_sig.U.next.next.var.get_value()
import matplotlib.cm as cm
n = 50
svd = lambda x: np.linalg.svd(x, compute_uv=False)
order = np.argsort(svd(X))
pu, = ax[0, 0].plot(svd(u)[order][:-n:-1], 'o-')
pU, = ax[0, 0].plot(svd(U)[order][:-n:-1], 'v-')
pX, = ax[0, 0].plot(svd(X)[order][:-n:-1], 'x-')
pX2, = ax[0, 0].plot(np.sort(svd(X2))[:-n:-1], 'x-')
ax[0, 0].legend([pu, pU, pX, pX2], ['svd(u)', 'svd(U)', 'svd(X)', 'svd(X2)'])
XE = np.mean(np.square(X), axis=1)
#XE = np.var(X, axis=1)
nphi = np.linalg.norm(phi.T, axis=1)
order = np.arange(len(XE))
pXE, = ax[0, 1].plot(XE[order][:-n:-1], 's-')
pphi, = ax[0, 1].plot(nphi[order][:-n:-1], '*-')
pq, = ax[0, 1].plot(Q[order, order][:-n:-1], 'x-')
ax[0, 1].legend([pXE, pphi, pq], ['E{X^2}', '|phi|', 'q_i'])
ax[0, 1].set_ylim([0.2, 5])
XE2 = np.mean(np.square(X2), axis=1)
nphi2 = np.linalg.norm(mdl.X2.phi.get_value().T, axis=1)
order = np.arange(len(XE2))
Q2 = mdl.X2.Q.get_value()
pXE2, = ax[1, 0].plot(XE2[order][:-n:-1], 's-')
pphi2, = ax[1, 0].plot(nphi2[order][:-n:-1], '*-')
pq2, = ax[1, 0].plot(Q2[order, order][:-n:-1], 'x-')
ax[1, 0].legend([pXE2, pphi2, pq2], ['E{X2^2}', '|phi2|', 'q2_i'])
ax[1, 0].set_ylim([0.2, 3])
ax[1, 1].imshow(rearrange_for_plot(phi), cmap=cm.Greys_r)
if SAVE_MOVIE:
if i < 500:
writer.grab_frame()
ax[0, 0].clear()
ax[0, 1].clear()
ax[1, 0].clear()
elif i == 500:
writer.finish()
else:
fig = plt.gcf()
plt.show()
# Progress prints
if (i % 20 == 0):
weights += [mdl.first_phi()[:, :]]
if not CONTINUOUS_VISUALIZATION:
visualize(weights[-1])
i_str = "I %4d:" % (i)
t_str = 't: %.2f s' % (time.time() - t)
t = time.time()
stiff_str = "stiff: %5.3f" % stiff
tostr = lambda t: "{" + ", ".join(["%s: %6.2f" % (n, v) for (n, v) in t]) + "}"
var_str = " logvar:" + tostr(trn_sig.variance())
a_str = " avg: " + tostr(trn_sig.avg_levels())
phi_norms = mdl.phi_norms()
phi_larg_str = " |phinL|: " + tostr(map(lambda a: (a[0], np.sum(a[1] > 1.1)), phi_norms))
phi_ones_str = " |phin1|: " + tostr(map(lambda a: (a[0], np.sum(np.isclose(a[1], 1.0, atol=0.1))), phi_norms))
phi_zero_str = " |phin0|: " + tostr(map(lambda a: (a[0], np.sum(np.isclose(a[1], 0.0, atol=0.5))), phi_norms))
phi_str = " |phi|: " + tostr(map(lambda a: (a[0], np.average(a[1])), phi_norms))
E_str = " E: " + tostr(trn_sig.energy())
u_err = ' uerr: %.5f' % trn_sig.u_err(d.samples)
U_sqr = ' Usqr: %.5f' % np.average(np.square(trn_sig.U.var.get_value()))
print i_str, stiff_str, t_str, E_str, phi_ones_str, u_err, U_sqr
#print var_str, a_str, phi_str
except KeyboardInterrupt:
pass
try:
if not dry_run and False:
visualize(weights[0])
except KeyboardInterrupt:
pass
def run(dry_run=False):
data = MnistDataset(batch_size=1000,
testset_size=1000,
normalize=False)
stiff_start, stiff_end, stiff_decay = (0.5, 0.005, 0.99)
stiff_update = lambda s: s * stiff_decay + (1 - stiff_decay) * stiff_end
input_dim = data.size('trn')[0][0]
class Model(ECA):
def structure(self):
if dry_run:
self.U = Input('U', input_dim)
self.X = Layer('X', 3, self.U, rect, 1.0)
else:
self.U = Input('U', input_dim)
self.X = Layer('X1', 100, self.U, rect, min_tau=0., stiffx=1.0)
mdl = Model()
trn_iters = 1000 if not dry_run else 1
print 'Training', trn_iters, 'iterations'
d = data.get('trn')
n = mdl.U.next[0].n
weights = []
try:
trn_sig = mdl.new_signals(data.samples('trn'))
trne_sig = mdl.new_signals(data.samples('trn'))
val_sig = mdl.new_signals(data.samples('val'))
tst_sig = mdl.new_signals(data.samples('tst'))
# "Module model" so that it updates only certain weights at a time
en = np.ones((n, d.samples.shape[1]), dtype=np.float32)
for j in range(10):
en[n//10 * j: n//10 * (j+1), d.labels != j] *= -0.1
trn_sig.U.next.set_modulation(en)
stiff = stiff_start
for i in range(1, trn_iters + 1):
t = time.time()
# Update model
trn_sig.propagate(d.samples, None)
trn_sig.adapt_layers(stiff)
stiff = stiff_update(stiff)
if i % 200 == 0:
calculate_accuracy(trne_sig, val_sig, tst_sig, data)
# Progress prints
if (i % 20 == 0):
weights += [mdl.first_phi()[:-10, :]]
i_str = "I %4d:" % (i)
t_str = 't: %.2f s' % (time.time() - t)
t = time.time()
stiff_str = "stiff: %5.3f" % stiff
tostr = lambda t: "{" + ", ".join(["%s: %6.2f" % (n, v) for (n, v) in t]) + "}"
var_str = " logvar:" + tostr(trn_sig.variance())
a_str = " avg: " + tostr(trn_sig.avg_levels())
phi_norms = mdl.phi_norms()
phi_larg_str = " |phinL|: " + tostr(map(lambda a: (a[0], np.sum(a[1] > 1.1)), phi_norms))
phi_ones_str = " |phin1|: " + tostr(map(lambda a: (a[0], np.sum(np.isclose(a[1], 1.0, atol=0.1))), phi_norms))
phi_zero_str = " |phin0|: " + tostr(map(lambda a: (a[0], np.sum(np.isclose(a[1], 0.0, atol=0.5))), phi_norms))
phi_str = " |phi|: " + tostr(map(lambda a: (a[0], np.average(a[1])), phi_norms))
E_str = " E: " + tostr(trn_sig.energy())
print i_str, stiff_str, t_str, E_str, phi_ones_str
#print var_str, a_str, phi_str
except KeyboardInterrupt:
pass
if dry_run:
return
try:
print 'Calculating final accuracy'
calculate_accuracy(trne_sig, val_sig, tst_sig, data)
if False:
visualize(weights[0])
except KeyboardInterrupt:
pass
def train_dae(
NET,
dae_layer,
sgd_params,
datasets):
"""
Train some layer of NET as an autoencoder of its input source.
Datasets should be a three-tuple, in which each item is a matrix of
observations. the first, second, and third matrices will be used for
training, validation, and testing, respectively.
"""
initial_learning_rate = sgd_params['start_rate']
learning_rate_decay = sgd_params['decay_rate']
n_epochs = sgd_params['epochs']
batch_size = sgd_params['batch_size']
wt_norm_bound = sgd_params['wt_norm_bound']
result_tag = sgd_params['result_tag']
txt_file_name = "results_dae_{0}.txt".format(result_tag)
img_file_name = "weights_dae_{0}.png".format(result_tag)
# Get the training data and create arrays of start/end indices for
# easy minibatch slicing
Xtr = datasets[0][0]
tr_samples = Xtr.get_value(borrow=True).shape[0]
tr_batches = int(np.ceil(float(tr_samples) / batch_size))
tr_bidx = [[i*batch_size, min(tr_samples, (i+1)*batch_size)] for i in range(tr_batches)]
tr_bidx = T.cast(tr_bidx, 'int32')
# Get the validation and testing sets and create arrays of start/end
# indices for easy minibatch slicing
Xva = datasets[1][0]
Xte = datasets[2][0]
va_samples = Xva.get_value(borrow=True).shape[0]
te_samples = Xte.get_value(borrow=True).shape[0]
va_batches = int(np.ceil(va_samples / 100.))
te_batches = int(np.ceil(te_samples / 100.))
va_bidx = [[i*100, min(va_samples, (i+1)*100)] for i in range(va_batches)]
te_bidx = [[i*100, min(te_samples, (i+1)*100)] for i in range(te_batches)]
va_bidx = theano.shared(value=np.asarray(va_bidx, dtype=theano.config.floatX))
te_bidx = theano.shared(value=np.asarray(te_bidx, dtype=theano.config.floatX))
va_bidx = T.cast(va_bidx, 'int32')
te_bidx = T.cast(te_bidx, 'int32')
print "Dataset info:"
print " training samples: {0:d}".format(tr_samples)
print " samples/minibatch: {0:d}, minibatches/epoch: {1:d}".format( \
batch_size, tr_batches)
print " validation samples: {0:d}, testing samples: {1:d}".format( \
va_samples, te_samples)
######################
# BUILD ACTUAL MODEL #
######################
print '... building the model'
# allocate symbolic variables for the data
index = T.lscalar() # index to a [mini]batch
epoch = T.scalar() # epoch counter
x = NET.input # symbolic matrix for inputs to NET
learning_rate = theano.shared(np.asarray(initial_learning_rate,
dtype=theano.config.floatX))
# Build the expressions for the cost functions.
NET_cost = NET.dae_costs[dae_layer][0] + NET.dae_costs[dae_layer][1]
NET_metrics = [NET_cost, NET.dae_costs[dae_layer][0], NET.dae_costs[dae_layer][1]]
opt_params = NET.dae_params[dae_layer]
############################################################################
# Compile testing and validation models. These models are evaluated on #
# batches of the same size as used in training. Trying to jam a large #
# validation or test set through the net may be stupid. #
############################################################################
test_model = theano.function(inputs=[index],
outputs=NET_metrics,
givens={ x: Xte[te_bidx[index,0]:te_bidx[index,1],:] })
validate_model = theano.function(inputs=[index],
outputs=NET_metrics,
givens={ x: Xva[va_bidx[index,0]:va_bidx[index,1],:] })
############################################################################
# Prepare momentum and gradient variables, and construct the updates that #
# Theano will perform on the network parameters. #
############################################################################
NET_grads = []
for param in opt_params:
NET_grads.append(T.grad(NET_cost, param))
NET_moms = []
for param in opt_params:
NET_moms.append(theano.shared(np.zeros( \
param.get_value(borrow=True).shape, dtype=theano.config.floatX)))
# Compute momentum for the current epoch
mom = ifelse(epoch < 500,
0.5*(1. - epoch/500.) + 0.99*(epoch/500.),
0.99)
# Use a "smoothed" learning rate, to ease into optimization
gentle_rate = ifelse(epoch < 20,
((epoch / 20.) * learning_rate),
learning_rate)
# Update the step direction using a momentus update
NET_updates = OrderedDict()
for i in range(len(opt_params)):
NET_updates[NET_moms[i]] = mom * NET_moms[i] + (1. - mom) * NET_grads[i]
# ... and take a step along that direction
for i in range(len(opt_params)):
param = opt_params[i]
NET_param = param - (gentle_rate * NET_updates[NET_moms[i]])
# Clip the updated param to bound its norm (where applicable)
if (NET.clip_params.has_key(param) and \
(NET.clip_params[param] == 1)):
NET_norms = T.sum(NET_param**2, axis=1, keepdims=1)
NET_scale = T.clip(T.sqrt(wt_norm_bound / NET_norms), 0., 1.)
NET_updates[param] = NET_param * NET_scale
else:
NET_updates[param] = NET_param
# Compile theano functions for training. These return the training cost
# and update the model parameters.
train_NET = theano.function(inputs=[epoch, index], \
outputs=NET_metrics, \
updates=NET_updates, \
givens={ x: Xtr[tr_bidx[index,0]:tr_bidx[index,1],:] })
# Theano function to decay the learning rate, this is separate from the
# training function because we only want to do this once each epoch instead
# of after each minibatch.
set_learning_rate = theano.function(inputs=[], outputs=learning_rate,
updates={learning_rate: learning_rate * learning_rate_decay})
###############
# TRAIN MODEL #
###############
print '... training'
validation_loss = 1e6
test_loss = 1e6
min_validation_loss = 1e6
min_test_loss = 1e6
epoch_counter = 0
start_time = time.clock()
results_file = open(txt_file_name, 'wb')
results_file.write("ensemble description: ")
results_file.write(" **TODO: Write code for this.**\n")
results_file.flush()
train_metrics = train_NET(1, 0)
while epoch_counter < n_epochs:
######################################################
# Process some number of minibatches for this epoch. #
######################################################
e_time = time.clock()
lam_l1 = 0.2 * min(float(epoch_counter)/10.0, 1.0)
NET.dae_lam_l1.set_value(np.asarray([lam_l1]).astype(theano.config.floatX))
epoch_counter = epoch_counter + 1
train_metrics = [0. for val in train_metrics]
for minibatch_index in xrange(tr_batches):
# Compute update for some joint supervised/unsupervised minibatch
batch_metrics = train_NET(epoch_counter, minibatch_index)
train_metrics = [(em + bm) for (em, bm) in zip(train_metrics, batch_metrics)]
train_metrics = [(val / tr_batches) for val in train_metrics]
# Update the learning rate
new_learning_rate = set_learning_rate()
######################################################
# Validation, testing, and general diagnostic stuff. #
######################################################
# Compute metrics on validation set
validation_metrics = [validate_model(i) for i in xrange(va_batches)]
validation_loss = np.mean([vm[0] for vm in validation_metrics])
# Compute test error if new best validation error was found
tag = " "
if ((validation_loss < min_validation_loss) or ((epoch_counter % 10) == 0)):
# Compute metrics on testing set
test_metrics = [test_model(i) for i in xrange(te_batches)]
test_loss = np.mean([tm[0] for tm in test_metrics])
if (validation_loss < min_validation_loss):
min_validation_loss = validation_loss
min_test_loss = test_loss
tag = ", te_loss={0:.4f}".format(test_loss)
results_file.write("{0:.4f} {1:.4f}\n".format(validation_loss, test_loss))
results_file.flush()
# Report and save progress.
print "epoch {0:d}: tr_loss={1:.4f}, tr_recon={2:.4f}, tr_sparse={3:.4f}, va_loss={4:.4f}{5}".format( \
epoch_counter, train_metrics[0], train_metrics[1], train_metrics[2], validation_loss, tag)
print "--time: {0:.4f}".format((time.clock() - e_time))
# Save first layer weights to an image locally
utils.visualize(NET, 0, 0, img_file_name)
def train_ss_mlp(
NET,
sgd_params,
datasets):
"""
Train NET using a mix of labeled an unlabeled data.
Datasets should be a four-tuple, in which the first item is a matrix/vector
pair of inputs/labels for training, the second item is a matrix of
unlabeled inputs for training, the third item is a matrix/vector pair of
inputs/labels for validation, and the fourth is a matrix/vector pair of
inputs/labels for testing.
"""
initial_learning_rate = sgd_params['start_rate']
learning_rate_decay = sgd_params['decay_rate']
n_epochs = sgd_params['epochs']
batch_size = sgd_params['batch_size']
wt_norm_bound = sgd_params['wt_norm_bound']
result_tag = sgd_params['result_tag']
txt_file_name = "results_mlp_{0}.txt".format(result_tag)
img_file_name = "weights_mlp_{0}.png".format(result_tag)
# Get supervised and unsupervised portions of training data, and create
# arrays of start/end indices for easy minibatch slicing.
(Xtr_su, Ytr_su) = (datasets[0][0], T.cast(datasets[0][1], 'int32'))
(Xtr_un, Ytr_un) = (datasets[1][0], T.cast(datasets[1][1], 'int32'))
su_samples = Xtr_su.get_value(borrow=True).shape[0]
un_samples = Xtr_un.get_value(borrow=True).shape[0]
tr_batches = 250
su_bsize = batch_size / 2
un_bsize = batch_size - su_bsize
su_batches = int(np.ceil(float(su_samples) / su_bsize))
un_batches = int(np.ceil(float(un_samples) / un_bsize))
su_bidx = [[i*su_bsize, min(su_samples, (i+1)*su_bsize)] for i in range(su_batches)]
un_bidx = [[i*un_bsize, min(un_samples, (i+1)*un_bsize)] for i in range(un_batches)]
su_bidx = theano.shared(value=np.asarray(su_bidx, dtype=theano.config.floatX))
un_bidx = theano.shared(value=np.asarray(un_bidx, dtype=theano.config.floatX))
su_bidx = T.cast(su_bidx, 'int32')
un_bidx = T.cast(un_bidx, 'int32')
# get the validation and testing sets and create arrays of start/end
# indices for easy minibatch slicing
Xva, Yva = (datasets[2][0], T.cast(datasets[2][1], 'int32'))
Xte, Yte = (datasets[3][0], T.cast(datasets[3][1], 'int32'))
va_samples = Xva.get_value(borrow=True).shape[0]
te_samples = Xte.get_value(borrow=True).shape[0]
va_batches = int(np.ceil(va_samples / 100.))
te_batches = int(np.ceil(te_samples / 100.))
va_bidx = [[i*100, min(va_samples, (i+1)*100)] for i in range(va_batches)]
te_bidx = [[i*100, min(te_samples, (i+1)*100)] for i in range(te_batches)]
va_bidx = theano.shared(value=np.asarray(va_bidx, dtype=theano.config.floatX))
te_bidx = theano.shared(value=np.asarray(te_bidx, dtype=theano.config.floatX))
va_bidx = T.cast(va_bidx, 'int32')
te_bidx = T.cast(te_bidx, 'int32')
# Print some useful information about the dataset
print "dataset info:"
print " supervised samples: {0:d}, unsupervised samples: {1:d}".format( \
su_samples, un_samples)
print " samples/minibatch: {0:d}, minibatches/epoch: {1:d}".format( \
(su_bsize + un_bsize), tr_batches)
print " validation samples: {0:d}, testing samples: {1:d}".format( \
va_samples, te_samples)
######################
# build actual model #
######################
print '... building the model'
# allocate symbolic variables for the data
index = T.lscalar() # index to a [mini]batch
epoch = T.scalar() # epoch counter
su_idx = T.lscalar() # symbolic batch index into supervised samples
un_idx = T.lscalar() # symbolic batch index into unsupervised samples
x = NET.input # some observations have labels
y = T.ivector('y') # the labels are presented as integer categories
learning_rate = theano.shared(np.asarray(initial_learning_rate, \
dtype=theano.config.floatX))
# build the expressions for the cost functions. if training without sde or
# dev regularization, the dev loss/cost will be used, but the weights for
# dev regularization on each layer will be set to 0 before training.
#train_cost = NET.spawn_class_cost(y) + NET.spawn_reg_cost(y)
class_cost = NET.spawn_class_cost(y)
if ('ear_type' in sgd_params):
ear_reg_cost = NET.spawn_reg_cost_alt(y, sgd_params['ear_type'])
else:
ear_reg_cost = NET.spawn_reg_cost(y)
act_reg_cost = NET.act_reg_cost
if ('ent_lam' in sgd_params):
train_cost = class_cost + ear_reg_cost + act_reg_cost + \
NET.spawn_ent_cost(sgd_params['ent_lam'], y)
else:
train_cost = class_cost + ear_reg_cost + act_reg_cost
tr_outputs = [train_cost, class_cost, ear_reg_cost, act_reg_cost]
vt_outputs = [NET.proto_class_errors(y), NET.proto_class_loss(y)]
############################################################################
# compile testing and validation models. these models are evaluated on #
# batches of the same size as used in training. trying to jam a large #
# validation or test set through the net may take too much memory. #
############################################################################
test_model = theano.function(inputs=[index], outputs=vt_outputs, \
givens={ \
x: Xte[te_bidx[index,0]:te_bidx[index,1],:], \
y: Yte[te_bidx[index,0]:te_bidx[index,1]]})
validate_model = theano.function(inputs=[index], outputs=vt_outputs, \
givens={ \
x: Xva[va_bidx[index,0]:va_bidx[index,1],:], \
y: Yva[va_bidx[index,0]:va_bidx[index,1]]})
############################################################################
# prepare momentum and gradient variables, and construct the updates that #
# theano will perform on the network parameters. #
############################################################################
opt_params = NET.proto_params
if sgd_params.has_key('top_only'):
if sgd_params['top_only']:
opt_params = NET.class_params
NET_grads = []
for param in opt_params:
NET_grads.append(T.grad(train_cost, param))
NET_moms = []
for param in opt_params:
NET_moms.append(theano.shared(np.zeros( \
param.get_value(borrow=True).shape, dtype=theano.config.floatX)))
# compute momentum for the current epoch
mom = ifelse(epoch < 500,
0.5*(1. - epoch/500.) + 0.99*(epoch/500.),
0.99)
# use a "smoothed" learning rate, to ease into optimization
gentle_rate = ifelse(epoch < 5,
((epoch / 5.) * learning_rate),
learning_rate)
# update the step direction using a momentus update
dev_updates = OrderedDict()
for i in range(len(opt_params)):
dev_updates[NET_moms[i]] = mom * NET_moms[i] + (1. - mom) * NET_grads[i]
# ... and take a step along that direction
for i in range(len(opt_params)):
param = opt_params[i]
dev_param = param - (gentle_rate * dev_updates[NET_moms[i]])
# clip the updated param to bound its norm (where applicable)
if (NET.clip_params.has_key(param) and \
(NET.clip_params[param] == 1)):
dev_norms = T.sum(dev_param**2, axis=1, keepdims=1)
dev_scale = T.clip(T.sqrt(wt_norm_bound / dev_norms), 0., 1.)
dev_updates[param] = dev_param * dev_scale
else:
dev_updates[param] = dev_param
# compile theano functions for training. these return the training cost
# and update the model parameters.
train_dev = theano.function(inputs=[epoch, su_idx, un_idx], outputs=tr_outputs, \
updates=dev_updates, \
givens={ \
x: T.concatenate([Xtr_su[su_bidx[su_idx,0]:su_bidx[su_idx,1],:], \
Xtr_un[un_bidx[un_idx,0]:un_bidx[un_idx,1],:]]),
y: T.concatenate([Ytr_su[su_bidx[su_idx,0]:su_bidx[su_idx,1]], \
Ytr_un[un_bidx[un_idx,0]:un_bidx[un_idx,1]]])})
# theano function to decay the learning rate, this is separate from the
# training function because we only want to do this once each epoch instead
# of after each minibatch.
set_learning_rate = theano.function(inputs=[], outputs=learning_rate, \
updates={learning_rate: learning_rate * learning_rate_decay})
###############
# train model #
###############
print '... training'
validation_error = 100.
test_error = 100.
min_validation_error = 100.
min_test_error = 100.
epoch_counter = 0
start_time = time.clock()
results_file = open(txt_file_name, 'wb')
results_file.write("ensemble description: ")
results_file.write(" **TODO: Write code for this.**\n")
results_file.flush()
e_time = time.clock()
su_index = 0
un_index = 0
# get array of epoch metrics (on a single minibatch)
train_metrics = train_dev(0, 0, 0)
validation_metrics = validate_model(0)
test_metrics = test_model(0)
# compute metrics on testing set
while epoch_counter < n_epochs:
######################################################
# process some number of minibatches for this epoch. #
######################################################
epoch_counter = epoch_counter + 1
train_metrics = [0. for v in train_metrics]
for b_idx in xrange(tr_batches):
# compute update for some this minibatch
batch_metrics = train_dev(epoch_counter, su_index, un_index)
train_metrics = [(em + bm) for (em, bm) in zip(train_metrics, batch_metrics)]
su_index = (su_index + 1) if ((su_index + 1) < su_batches) else 0
un_index = (un_index + 1) if ((un_index + 1) < un_batches) else 0
# Compute 'averaged' values over the minibatches
train_metrics = [(float(v) / tr_batches) for v in train_metrics]
# update the learning rate
new_learning_rate = set_learning_rate()
######################################################
# validation, testing, and general diagnostic stuff. #
######################################################
# compute metrics on validation set
validation_metrics = [0. for v in validation_metrics]
for b_idx in xrange(va_batches):
batch_metrics = validate_model(b_idx)
validation_metrics = [(em + bm) for (em, bm) in zip(validation_metrics, batch_metrics)]
# Compute 'averaged' values over the minibatches
validation_error = 100 * (float(validation_metrics[0]) / va_samples)
validation_loss = float(validation_metrics[1]) / va_batches
# compute test error if new best validation error was found
tag = " "
# compute metrics on testing set
test_metrics = [0. for v in test_metrics]
for b_idx in xrange(te_batches):
batch_metrics = test_model(b_idx)
test_metrics = [(em + bm) for (em, bm) in zip(test_metrics, batch_metrics)]
# Compute 'averaged' values over the minibatches
test_error = 100 * (float(test_metrics[0]) / te_samples)
test_loss = float(test_metrics[1]) / te_batches
if (validation_error < min_validation_error):
min_validation_error = validation_error
min_test_error = test_error
tag = ", test={0:.2f}".format(test_error)
results_file.write("{0:.2f} {1:.2f} {2:.2f} {3:.4f} {4:.4f} {5:.4f}\n".format( \
train_metrics[2], validation_error, test_error, train_metrics[1], \
validation_loss, test_loss))
results_file.flush()
# report and save progress.
print "epoch {0:d}: t_cost={1:.2f}, t_loss={2:.4f}, t_ear={3:.4f}, t_act={6:.4f}, valid={4:.2f}{5}".format( \
epoch_counter, train_metrics[0], train_metrics[1], train_metrics[2], \
validation_error, tag, train_metrics[3])
print "--time: {0:.4f}".format((time.clock() - e_time))
e_time = time.clock()
# save first layer weights to an image locally
utils.visualize(NET, 0, 0, img_file_name)
print("optimization complete. best validation error {0:.4f}, with test error {1:.4f}".format( \
(min_validation_error), (min_test_error)))
def main(_):
pp.pprint(flags.FLAGS.__flags)
if FLAGS.input_width is None:
FLAGS.input_width = FLAGS.input_height
if FLAGS.output_width is None:
FLAGS.output_width = FLAGS.output_height
if not os.path.exists(FLAGS.checkpoint_dir):
os.makedirs(FLAGS.checkpoint_dir)
if not os.path.exists(FLAGS.sample_dir):
os.makedirs(FLAGS.sample_dir)
#gpu_options = tf.GPUOptions(per_process_gpu_memory_fraction=0.333)
run_config = tf.ConfigProto()
run_config.gpu_options.allow_growth=True
with tf.Session(config=run_config) as sess:
if FLAGS.dataset == 'mnist':
dcgan = DCGAN(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
sample_num=FLAGS.batch_size,
y_dim=10,
c_dim=1,
dataset_name=FLAGS.dataset,
input_fname_pattern=FLAGS.input_fname_pattern,
is_crop=FLAGS.is_crop,
checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir)
else:
dcgan = DCGAN(
sess,
input_width=FLAGS.input_width,
input_height=FLAGS.input_height,
output_width=FLAGS.output_width,
output_height=FLAGS.output_height,
batch_size=FLAGS.batch_size,
sample_num=FLAGS.batch_size,
c_dim=FLAGS.c_dim,
dataset_name=FLAGS.dataset,
input_fname_pattern=FLAGS.input_fname_pattern,
is_crop=FLAGS.is_crop,
checkpoint_dir=FLAGS.checkpoint_dir,
sample_dir=FLAGS.sample_dir)
show_all_variables()
if FLAGS.is_train:
dcgan.train(FLAGS)
else:
if not dcgan.load(FLAGS.checkpoint_dir):
raise Exception("[!] Train a model first, then run test mode")
# to_json("./web/js/layers.js", [dcgan.h0_w, dcgan.h0_b, dcgan.g_bn0],
# [dcgan.h1_w, dcgan.h1_b, dcgan.g_bn1],
# [dcgan.h2_w, dcgan.h2_b, dcgan.g_bn2],
# [dcgan.h3_w, dcgan.h3_b, dcgan.g_bn3],
# [dcgan.h4_w, dcgan.h4_b, None])
# Below is codes for visualization
OPTION = 1
visualize(sess, dcgan, FLAGS, OPTION)
####################################################
machine_steering = []
print('performing inference...')
time_start = time.time()
#for frame_id in range(frame_count):
# ret, img = cap.read()
# assert ret
# ## you can modify here based on your model
# img = img_pre_process(img)
# img = img[None,:,:,:]
# deg = float(model.predict(img, batch_size=1))
# machine_steering.append(deg)
# this line goes wrong, instead with below code
############ New codes added by student ############
machine_steering = model.predict(imgs_test, batch_size=128, verbose=0)
####################################################
fps = frame_count / (time.time() - time_start)
print('completed inference, total frames: {}, average fps: {} Hz'.format(frame_count, round(fps, 1)))
print('performing visualization...')
utils.visualize(epoch_id, machine_steering, params.out_dir,
verbose=True, frame_count_limit=None)
from scipy import io
############# FILE STUFF #############
trainFileMNIST = "./mnist_data/images.mat"
trainMatrix = io.loadmat(trainFileMNIST) # Dictionary
############# GET DATA #############
print 20 * "#", "Getting Data", 20 * "#"
imageData = np.array(trainMatrix['images'])
imageData = np.rollaxis(imageData, 2, 0) # move the index axis to be the first
dataShape = np.shape(imageData)
print "Image Data Shape", dataShape
imageDataFlat = []
for elem in imageData:
imageDataFlat.append(elem.flatten())
dataShape = np.shape(imageDataFlat)
print "Image Data Flat Shape", dataShape
num_clusters = [5, 10, 20]
for cluster in num_clusters:
print 20 * "#", "Num Clusters:", cluster, 20 * "#"
KM = KMeans(cluster, max_iter=10)
KM.fit(imageDataFlat)
visualize(KM.cluster_centers_, cluster)
plt.grid()
plt.legend(loc='best', fancybox=True, framealpha=0.5)
plt.xlabel('time(10ms)')
plt.ylabel('Value')
plt.show()
return data
if __name__== '__main__':
'''
matchs=filesinroot(path,"multispeed",0)
multispeed_data=construct(matchs)
multispeed_data=select(multispeed_data)
#multispeed_data=add_simu_data(multispeed_data,multispeed_data.shape[0]/2)
visualize(multispeed_data)
savefile(multispeed_data,parent_path+'/dataset/multispeed_dataset'+tstr+'.pkl.gz')
'''
'''
matchs=filesinroot(path,"test",0)
data=dg.construct(matchs)
data=dg.select(data)
data=dg.add_simu_data(data,data.shape[0]/2)
data=np.vstack((multispeed_data,data))
dg.visualize(data)
savefile(multispeed_data,parent_path+'/dataset/dataset'+tstr+'.pkl.gz')
'''
#test decay mode
data=test_time_decay(path='/Users/subercui/Git/BaikeBalance/New data/nn_test/MLP_error.txt')
utils.visualize(data)
def run(dry_run=False):
trn_iters = 1000 if not dry_run else 1
data = MnistDataset(batch_size=2000,
testset_size=1000,
normalize=False)
stiff_start, stiff_end, stiff_decay = (0.5, 0.05, 0.90)
stiff_update = lambda s: s * stiff_decay + (1 - stiff_decay) * stiff_end
input_dim = data.size('trn')[0][0]
class Model(ECA):
def structure(self):
if dry_run:
self.U = Input('U', input_dim)
self.X = Layer('X', 3, self.U, rect, 1.0)
else:
self.U = Input('U', input_dim)
self.X1 = Layer('X1', 100, self.U, lambda x: rect(x), min_tau=0., stiffx=1.0)
mdl = Model()
print 'Training for', trn_iters, 'iterations'
d = data.get('trn')
k = data.samples('trn')
stiff = stiff_start
weights = []
try:
rng = np.random.RandomState(seed=0)
trn_sig = mdl.new_signals(k)
test_k = 25
test_sig = mdl.new_signals(test_k)
test_data = data.get('val').samples[:, :test_k]
guessed = test_data.copy()
RECONSTRUCT_HALF = False
if RECONSTRUCT_HALF:
guessed[:784//2] = np.nan
else:
mask = rng.binomial(n=1, p=0.1, size=(784, test_k))
guessed = np.where(mask == 1, guessed, np.nan)
for i in range(1, trn_iters + 1):
t = time.time()
# Training
trn_sig.propagate(d.samples, None)
trn_sig.adapt_layers(stiff)
stiff = stiff_update(stiff)
# Progress prints
if (i % 20 == 0):
i_str = "I %4d:" % (i)
t_str = 't: %.2f s' % (time.time() - t)
t = time.time()
stiff_str = "stiff: %5.3f" % stiff
tostr = lambda t: "{" + ", ".join(["%s: %6.2f" % (n, v) for (n, v) in t]) + "}"
var_str = " logvar:" + tostr(trn_sig.variance())
a_str = " avg: " + tostr(trn_sig.avg_levels())
phi_norms = mdl.phi_norms()
phi_larg_str = " |phinL|: " + tostr(map(lambda a: (a[0], np.sum(a[1] > 1.1)), phi_norms))
phi_ones_str = " |phin1|: " + tostr(map(lambda a: (a[0], np.sum(np.isclose(a[1], 1.0, atol=0.1))), phi_norms))
phi_zero_str = " |phin0|: " + tostr(map(lambda a: (a[0], np.sum(np.isclose(a[1], 0.0, atol=0.5))), phi_norms))
phi_str = " |phi|: " + tostr(map(lambda a: (a[0], np.average(a[1])), phi_norms))
E_str = " E: " + tostr(trn_sig.energy())
u_err = ' uerr: %.5f' % trn_sig.u_err(d.samples)
U_sqr = ' Usqr: %.5f' % np.average(np.square(trn_sig.U.var.get_value()))
impute(data, test_k, mdl, test_sig, guessed, test_data, sample=False)
print i_str, stiff_str, t_str, E_str, phi_ones_str, u_err, U_sqr
#print var_str, a_str, phi_str
except KeyboardInterrupt:
pass
try:
# Try to interpret u_est as pdf and sample from it
while True and not dry_run:
guessed = impute(data, test_k, mdl, test_sig, guessed, test_data, sample=True)
except KeyboardInterrupt:
pass
try:
if not dry_run and False:
visualize(weights[0])
except KeyboardInterrupt:
pass
def test_mlp(
rng,
mlp_params,
sgd_params,
datasets):
"""
Datasets should be a four-tuple, in which the first item is a matrix/vector
pair of inputs/labels for training, the second item is a matrix of
unlabeled inputs for training, the third item is a matrix/vector pair of
inputs/labels for validation, and the fourth is a matrix/vector pair of
inputs/labels for testing.
"""
initial_learning_rate = sgd_params['start_rate']
learning_rate_decay = sgd_params['decay_rate']
n_epochs = sgd_params['epochs']
batch_size = sgd_params['batch_size']
mlp_type = sgd_params['mlp_type']
wt_norm_bound = sgd_params['wt_norm_bound']
result_tag = sgd_params['result_tag']
txt_file_name = "results_{0}.txt".format(result_tag)
img_file_name = "weights_{0}.png".format(result_tag)
# Get supervised and unsupervised portions of training data, and create
# arrays of start/end indices for easy minibatch slicing.
(Xtr_su, Ytr_su) = (datasets[0][0], T.cast(datasets[0][1], 'int32'))
(Xtr_un, Ytr_un) = (datasets[1][0], T.cast(datasets[1][1], 'int32'))
su_samples = Xtr_su.get_value(borrow=True).shape[0]
un_samples = Xtr_un.get_value(borrow=True).shape[0]
tr_batches = 250
mlp_params['ss_ratio'] = float(su_samples) / (su_samples + un_samples)
su_bsize = batch_size / 2
un_bsize = batch_size - su_bsize
su_batches = int(np.ceil(float(su_samples) / su_bsize))
un_batches = int(np.ceil(float(un_samples) / un_bsize))
su_bidx = [[i*su_bsize, min(su_samples, (i+1)*su_bsize)] for i in range(su_batches)]
un_bidx = [[i*un_bsize, min(un_samples, (i+1)*un_bsize)] for i in range(un_batches)]
su_bidx = theano.shared(value=np.asarray(su_bidx, dtype=theano.config.floatX))
un_bidx = theano.shared(value=np.asarray(un_bidx, dtype=theano.config.floatX))
su_bidx = T.cast(su_bidx, 'int32')
un_bidx = T.cast(un_bidx, 'int32')
# Get the validation and testing sets and create arrays of start/end
# indices for easy minibatch slicing
Xva, Yva = (datasets[2][0], T.cast(datasets[2][1], 'int32'))
Xte, Yte = (datasets[3][0], T.cast(datasets[3][1], 'int32'))
va_samples = Xva.get_value(borrow=True).shape[0]
te_samples = Xte.get_value(borrow=True).shape[0]
va_batches = int(np.ceil(va_samples / 100.0))
te_batches = int(np.ceil(te_samples / 100.0))
va_bidx = [[i*100, min(va_samples, (i+1)*100)] for i in range(va_batches)]
te_bidx = [[i*100, min(te_samples, (i+1)*100)] for i in range(te_batches)]
va_bidx = theano.shared(value=np.asarray(va_bidx, dtype=theano.config.floatX))
te_bidx = theano.shared(value=np.asarray(te_bidx, dtype=theano.config.floatX))
va_bidx = T.cast(va_bidx, 'int32')
te_bidx = T.cast(te_bidx, 'int32')
print "Dataset info:"
print " supervised samples: {0:d}, unsupervised samples: {1:d}".format( \
su_samples, un_samples)
print " samples/minibatch: {0:d}, minibatches/epoch: {1:d}".format( \
(su_bsize + un_bsize), tr_batches)
print " validation samples: {0:d}, testing samples: {1:d}".format( \
va_samples, te_samples)
######################
# BUILD ACTUAL MODEL #
######################
print '... building the model'
# allocate symbolic variables for the data
index = T.lscalar() # index to a [mini]batch
epoch = T.scalar() # epoch counter
su_idx = T.lscalar() # symbolic batch index into supervised samples
un_idx = T.lscalar() # symbolic batch index into unsupervised samples
x = T.matrix('x') # some observations have labels
y = T.ivector('y') # the labels are presented as integer categories
learning_rate = theano.shared(np.asarray(initial_learning_rate,
dtype=theano.config.floatX))
# construct the MLP class
NET = SS_DEV_MLP(rng=rng, input=x, params=mlp_params)
# Build the expressions for the cost functions. If training without SDE or
# DEV regularization, the DEV loss/cost will be used, but the weights for
# DEV regularization on each layer will be set to 0 before training.
sde_cost = NET.sde_class_loss(y) + NET.sde_reg_loss
dev_cost = NET.dev_class_loss(y) + NET.dev_dev_loss(y) + NET.dev_reg_loss
NET_metrics = [NET.raw_errors(y), NET.raw_class_loss(y), \
NET.dev_dev_loss(y), NET.raw_reg_loss]
############################################################################
# Compile testing and validation models. These models are evaluated on #
# batches of the same size as used in training. Trying to jam a large #
# validation or test set through the net may take too much memory. #
############################################################################
test_model = theano.function(inputs=[index],
outputs=NET_metrics,
givens={
x: Xte[te_bidx[index,0]:te_bidx[index,1],:],
y: Yte[te_bidx[index,0]:te_bidx[index,1]]})
validate_model = theano.function(inputs=[index],
outputs=NET_metrics,
givens={
x: Xva[va_bidx[index,0]:va_bidx[index,1],:],
y: Yva[va_bidx[index,0]:va_bidx[index,1]]})
############################################################################
# Prepare momentum and gradient variables, and construct the updates that #
# Theano will perform on the network parameters. #
############################################################################
sde_grads = []
dev_grads = []
for param in NET.params:
sde_grads.append(T.grad(sde_cost, param))
dev_grads.append(T.grad(dev_cost, param))
sde_moms = []
dev_moms = []
for param in NET.params:
sde_moms.append(theano.shared(np.zeros( \
param.get_value(borrow=True).shape, dtype=theano.config.floatX)))
dev_moms.append(theano.shared(np.zeros( \
param.get_value(borrow=True).shape, dtype=theano.config.floatX)))
# Compute momentum for the current epoch
mom = ifelse(epoch < 500,
0.5*(1. - epoch/500.) + 0.99*(epoch/500.),
0.99)
# Use a "smoothed" learning rate, to ease into optimization
gentle_rate = ifelse(epoch < 5,
(epoch / 5.0) * learning_rate,
learning_rate)
# Update the step direction using a momentus update
sde_updates = OrderedDict()
dev_updates = OrderedDict()
for i in range(len(NET.params)):
sde_updates[sde_moms[i]] = mom * sde_moms[i] + (1. - mom) * sde_grads[i]
dev_updates[dev_moms[i]] = mom * dev_moms[i] + (1. - mom) * dev_grads[i]
# ... and take a step along that direction
for i in range(len(NET.params)):
param = NET.params[i]
sde_param = param - (gentle_rate * sde_updates[sde_moms[i]])
dev_param = param - (gentle_rate * dev_updates[dev_moms[i]])
# Clip the updated param to bound its norm (where applicable)
if (NET.clip_params.has_key(param) and \
(NET.clip_params[param] == 1)):
sde_norms = T.sum(sde_param**2, axis=1).reshape((sde_param.shape[0],1))
sde_scale = T.clip(T.sqrt(wt_norm_bound / sde_norms), 0., 1.)
sde_updates[param] = sde_param * sde_scale
dev_norms = T.sum(dev_param**2, axis=1).reshape((dev_param.shape[0],1))
dev_scale = T.clip(T.sqrt(wt_norm_bound / dev_norms), 0., 1.)
dev_updates[param] = dev_param * dev_scale
else:
sde_updates[param] = sde_param
dev_updates[param] = dev_param
# Compile theano functions for training. These return the training cost
# and update the model parameters.
train_sde = theano.function(inputs=[epoch, su_idx, un_idx], outputs=NET_metrics,
updates=sde_updates,
givens={
x: T.concatenate([Xtr_su[su_bidx[su_idx,0]:su_bidx[su_idx,1],:], \
Xtr_un[un_bidx[un_idx,0]:un_bidx[un_idx,1],:]]),
y: T.concatenate([Ytr_su[su_bidx[su_idx,0]:su_bidx[su_idx,1]], \
Ytr_un[un_bidx[un_idx,0]:un_bidx[un_idx,1]]])})
train_dev = theano.function(inputs=[epoch, su_idx, un_idx], outputs=NET_metrics,
updates=dev_updates,
givens={
x: T.concatenate([Xtr_su[su_bidx[su_idx,0]:su_bidx[su_idx,1],:], \
Xtr_un[un_bidx[un_idx,0]:un_bidx[un_idx,1],:]]),
y: T.concatenate([Ytr_su[su_bidx[su_idx,0]:su_bidx[su_idx,1]], \
Ytr_un[un_bidx[un_idx,0]:un_bidx[un_idx,1]]])})
# Theano function to decay the learning rate, this is separate from the
# training function because we only want to do this once each epoch instead
# of after each minibatch.
set_learning_rate = theano.function(inputs=[], outputs=learning_rate,
updates={learning_rate: learning_rate * learning_rate_decay})
###############
# TRAIN MODEL #
###############
print '... training'
validation_errors = 1e6
test_errors = 1e6
min_validation_errors = 1e6
min_test_errors = 1e6
epoch_counter = 0
start_time = time.clock()
results_file = open(txt_file_name, 'wb')
results_file.write("mlp_type: {0}\n".format(mlp_type))
results_file.write("lam_l2a: {0:.4f}\n".format(mlp_params['lam_l2a']))
results_file.write("dev_types: {0}\n".format(str(mlp_params['dev_types'])))
results_file.write("dev_lams: {0}\n".format(str(mlp_params['dev_lams'])))
results_file.flush()
e_time = time.clock()
su_index = 0
un_index = 0
# Get array of epoch metrics (on a single minibatch)
epoch_metrics = train_sde(1, su_index, un_index)
# Compute metrics on validation set
validation_metrics = [validate_model(i) for i in xrange(va_batches)]
validation_errors = np.sum([m[0] for m in validation_metrics])
# Compute metrics on testing set
test_metrics = [test_model(i) for i in xrange(te_batches)]
test_errors = np.sum([m[0] for m in test_metrics])
while epoch_counter < n_epochs:
######################################################
# Process some number of minibatches for this epoch. #
######################################################
epoch_counter = epoch_counter + 1
epoch_metrics = [0.0 for v in epoch_metrics]
for minibatch_index in xrange(tr_batches):
# Compute update for some joint supervised/unsupervised minibatch
if ((epoch_counter <= 0) or (mlp_type == 'sde')):
batch_metrics = train_sde(epoch_counter, su_index, un_index)
else:
batch_metrics = train_dev(epoch_counter, su_index, un_index)
epoch_metrics = [(em + bm) for (em, bm) in zip(epoch_metrics, batch_metrics)]
su_index = (su_index + 1) if ((su_index + 1) < su_batches) else 0
un_index = (un_index + 1) if ((un_index + 1) < un_batches) else 0
# Update the learning rate
new_learning_rate = set_learning_rate()
######################################################
# Validation, testing, and general diagnostic stuff. #
######################################################
# Compute metrics on validation set
validation_metrics = [validate_model(i) for i in xrange(va_batches)]
validation_errors = np.sum([m[0] for m in validation_metrics])
# Compute test error if new best validation error was found
tag = " "
#if ((validation_errors < min_validation_errors) or ((epoch_counter % 10) == 0)):
if ('I' == 'I'):
# Compute metrics on testing set
test_metrics = [test_model(i) for i in xrange(te_batches)]
test_errors = np.sum([m[0] for m in test_metrics])
tag = ", test={0:d}".format(test_errors)
if (validation_errors < min_validation_errors):
min_validation_errors = validation_errors
min_test_errors = test_errors
results_file.write("{0:d} {1:d}\n".format(validation_errors, test_errors))
results_file.flush()
# Report and save progress.
epoch_metrics[0] = float(epoch_metrics[0]) / (tr_batches * su_bsize)
epoch_metrics[1:] = [(float(v) / tr_batches) for v in epoch_metrics[1:]]
print "epoch {0:d}: t_err={1:.2f}, t_loss={2:.4f}, t_dev={3:.4f}, t_reg={4:.4f}, valid={5:d}{6}".format( \
epoch_counter, epoch_metrics[0], epoch_metrics[1], epoch_metrics[2], epoch_metrics[3], \
int(validation_errors), tag)
print "--time: {0:.4f}".format((time.clock() - e_time))
e_time = time.clock()
# Save first layer weights to an image locally
utils.visualize(NET, 0, img_file_name)
print("Optimization complete. Best validation score of {0:.4f}, with test score {1:.4f}".format( \
(min_validation_errors / 100.0), (min_test_errors / 100.0)))
results_file.write("{0:d} {1:d}\n".format(min_validation_errors, min_test_errors))
results_file.flush()
import sys
import utils
from dbscan import *
if __name__ == "__main__":
filename = sys.argv[1]
points = utils.read_input(filename)
dbscan(points, 0.5) # it will labeled cluster of elements of points
utils.visualize(points)
