def unsup_finetune(model, FLAGS_model):
train_dataset = Cifar10(FLAGS, train=False)
train_dataloader = DataLoader(train_dataset, batch_size=FLAGS.batch_size, num_workers=FLAGS.data_workers, shuffle=True, drop_last=False)
classifier = ModelLinear(FLAGS_model).cuda()
optimizer = optim.Adam(classifier.parameters(),
lr=1e-3)
criterion = nn.CrossEntropyLoss()
running_accuracy = []
count = 0
for i in range(100):
for data_corrupt, data, label_gt in tqdm(train_dataloader):
data = data.permute(0, 3, 1, 2).float().cuda()
target = label_gt.long().cuda()
with torch.no_grad():
model_feat = model.compute_feat(data, None)
model_feat = F.normalize(model_feat, dim=-1, p=2)
output = classifier(model_feat)
loss = criterion(output, target)
optimizer.zero_grad()
loss.backward()
optimizer.step()
acc1, acc5 = accuracy(output, target, topk=(1, 5))
running_accuracy.append(acc1.item())
running_accuracy = running_accuracy[-10:]
print(count, loss, np.mean(running_accuracy))
count += 1
def energyevalmix(model):
# dataset = Cifar100(FLAGS, train=False)
# dataset = Svhn(train=False)
# dataset = Textures(train=True)
# dataset = Cifar10(FLAGS, train=False)
dataset = CelebaSmall()
test_dataloader = DataLoader(dataset, batch_size=FLAGS.batch_size, num_workers=FLAGS.data_workers, shuffle=True, drop_last=False)
train_dataset = Cifar10(FLAGS, train=False)
train_dataloader = DataLoader(train_dataset, batch_size=FLAGS.batch_size, num_workers=FLAGS.data_workers, shuffle=True, drop_last=False)
test_iter = iter(test_dataloader)
probs = []
labels = []
negs = []
pos = []
for data_corrupt, data, label_gt in tqdm(train_dataloader):
_, data_mix, _ = test_iter.next()
# data_mix = data_mix[:data.shape[0]]
# data_mix_permute = torch.cat([data_mix[1:data.shape[0]], data_mix[:1]], dim=0)
# data_mix = (data_mix + data_mix_permute) / 2.
data = data.permute(0, 3, 1, 2).float().cuda()
data_mix = data_mix.permute(0, 3, 1, 2).float().cuda()
pos_energy = model.forward(data, None).detach().cpu().numpy().mean(axis=-1)
neg_energy = model.forward(data_mix, None).detach().cpu().numpy().mean(axis=-1)
print("pos_energy", pos_energy.mean())
print("neg_energy", neg_energy.mean())
probs.extend(list(-1*pos_energy))
probs.extend(list(-1*neg_energy))
pos.extend(list(-1*pos_energy))
negs.extend(list(-1*neg_energy))
labels.extend([1]*pos_energy.shape[0])
labels.extend([0]*neg_energy.shape[0])
pos, negs = np.array(pos), np.array(negs)
np.save("pos.npy", pos)
np.save("neg.npy", negs)
auroc = sk.roc_auc_score(labels, probs)
print("Roc score of {}".format(auroc))
def dataset_iterator(args):
if args.dataset == 'mnist':
train_gen, dev_gen, test_gen = Mnist.load(args.batch_size,
args.batch_size)
if args.dataset == 'cifar10':
data_dir = '../../../images/cifar-10-batches-py/'
train_gen, dev_gen = Cifar10.load(args.batch_size, data_dir)
test_gen = None
if args.dataset == 'imagenet':
data_dir = '../../../images/imagenet12/imagenet_val_png/'
train_gen, dev_gen = Imagenet.load(args.batch_size, data_dir)
test_gen = None
if args.dataset == 'raise':
data_dir = '../../../images/raise/'
train_gen, dev_gen = Raise.load(args.batch_size, data_dir)
test_gen = None
else:
raise ValueError
return (train_gen, dev_gen, test_gen)
def main():
print("Local rank: ", hvd.local_rank(), hvd.size())
logdir = osp.join(FLAGS.logdir, FLAGS.exp)
if hvd.rank() == 0:
if not osp.exists(logdir):
os.makedirs(logdir)
logger = TensorBoardOutputFormat(logdir)
else:
logger = None
LABEL = None
print("Loading data...")
if FLAGS.dataset == 'cifar10':
dataset = Cifar10(augment=FLAGS.augment, rescale=FLAGS.rescale)
test_dataset = Cifar10(train=False, rescale=FLAGS.rescale)
channel_num = 3
X_NOISE = tf.placeholder(shape=(None, 32, 32, 3), dtype=tf.float32)
X = tf.placeholder(shape=(None, 32, 32, 3), dtype=tf.float32)
LABEL = tf.placeholder(shape=(None, 10), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 10), dtype=tf.float32)
if FLAGS.large_model:
model = ResNet32Large(num_channels=channel_num,
num_filters=128,
train=True)
elif FLAGS.larger_model:
model = ResNet32Larger(num_channels=channel_num, num_filters=128)
elif FLAGS.wider_model:
model = ResNet32Wider(num_channels=channel_num, num_filters=192)
else:
model = ResNet32(num_channels=channel_num, num_filters=128)
elif FLAGS.dataset == 'imagenet':
dataset = Imagenet(train=True)
test_dataset = Imagenet(train=False)
channel_num = 3
X_NOISE = tf.placeholder(shape=(None, 32, 32, 3), dtype=tf.float32)
X = tf.placeholder(shape=(None, 32, 32, 3), dtype=tf.float32)
LABEL = tf.placeholder(shape=(None, 1000), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 1000), dtype=tf.float32)
model = ResNet32Wider(num_channels=channel_num, num_filters=256)
elif FLAGS.dataset == 'imagenetfull':
channel_num = 3
X_NOISE = tf.placeholder(shape=(None, 128, 128, 3), dtype=tf.float32)
X = tf.placeholder(shape=(None, 128, 128, 3), dtype=tf.float32)
LABEL = tf.placeholder(shape=(None, 1000), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 1000), dtype=tf.float32)
model = ResNet128(num_channels=channel_num, num_filters=64)
elif FLAGS.dataset == 'mnist':
dataset = Mnist(rescale=FLAGS.rescale)
test_dataset = dataset
channel_num = 1
X_NOISE = tf.placeholder(shape=(None, 28, 28), dtype=tf.float32)
X = tf.placeholder(shape=(None, 28, 28), dtype=tf.float32)
LABEL = tf.placeholder(shape=(None, 10), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 10), dtype=tf.float32)
model = MnistNet(num_channels=channel_num,
num_filters=FLAGS.num_filters)
elif FLAGS.dataset == 'dsprites':
dataset = DSprites(cond_shape=FLAGS.cond_shape,
cond_size=FLAGS.cond_size,
cond_pos=FLAGS.cond_pos,
cond_rot=FLAGS.cond_rot)
test_dataset = dataset
channel_num = 1
X_NOISE = tf.placeholder(shape=(None, 64, 64), dtype=tf.float32)
X = tf.placeholder(shape=(None, 64, 64), dtype=tf.float32)
if FLAGS.dpos_only:
LABEL = tf.placeholder(shape=(None, 2), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 2), dtype=tf.float32)
elif FLAGS.dsize_only:
LABEL = tf.placeholder(shape=(None, 1), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 1), dtype=tf.float32)
elif FLAGS.drot_only:
LABEL = tf.placeholder(shape=(None, 2), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 2), dtype=tf.float32)
elif FLAGS.cond_size:
LABEL = tf.placeholder(shape=(None, 1), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 1), dtype=tf.float32)
elif FLAGS.cond_shape:
LABEL = tf.placeholder(shape=(None, 3), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 3), dtype=tf.float32)
elif FLAGS.cond_pos:
LABEL = tf.placeholder(shape=(None, 2), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 2), dtype=tf.float32)
elif FLAGS.cond_rot:
LABEL = tf.placeholder(shape=(None, 2), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 2), dtype=tf.float32)
else:
LABEL = tf.placeholder(shape=(None, 3), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 3), dtype=tf.float32)
model = DspritesNet(num_channels=channel_num,
num_filters=FLAGS.num_filters,
cond_size=FLAGS.cond_size,
cond_shape=FLAGS.cond_shape,
cond_pos=FLAGS.cond_pos,
cond_rot=FLAGS.cond_rot)
print("Done loading...")
if FLAGS.dataset == "imagenetfull":
# In the case of full imagenet, use custom_tensorflow dataloader
data_loader = TFImagenetLoader('train',
FLAGS.batch_size,
hvd.rank(),
hvd.size(),
rescale=FLAGS.rescale)
else:
data_loader = DataLoader(dataset,
batch_size=FLAGS.batch_size,
num_workers=FLAGS.data_workers,
drop_last=True,
shuffle=True)
batch_size = FLAGS.batch_size
weights = [model.construct_weights('context_0')]
Y = tf.placeholder(shape=(None), dtype=tf.int32)
# Varibles to run in training
X_SPLIT = tf.split(X, FLAGS.num_gpus)
X_NOISE_SPLIT = tf.split(X_NOISE, FLAGS.num_gpus)
LABEL_SPLIT = tf.split(LABEL, FLAGS.num_gpus)
LABEL_POS_SPLIT = tf.split(LABEL_POS, FLAGS.num_gpus)
LABEL_SPLIT_INIT = list(LABEL_SPLIT)
tower_grads = []
tower_gen_grads = []
x_mod_list = []
optimizer = AdamOptimizer(FLAGS.lr, beta1=0.0, beta2=0.999)
optimizer = hvd.DistributedOptimizer(optimizer)
for j in range(FLAGS.num_gpus):
if FLAGS.model_cclass:
ind_batch_size = FLAGS.batch_size // FLAGS.num_gpus
label_tensor = tf.Variable(tf.convert_to_tensor(np.reshape(
np.tile(np.eye(10), (FLAGS.batch_size, 1, 1)),
(FLAGS.batch_size * 10, 10)),
dtype=tf.float32),
trainable=False,
dtype=tf.float32)
x_split = tf.tile(
tf.reshape(X_SPLIT[j], (ind_batch_size, 1, 32, 32, 3)),
(1, 10, 1, 1, 1))
x_split = tf.reshape(x_split, (ind_batch_size * 10, 32, 32, 3))
energy_pos = model.forward(x_split,
weights[0],
label=label_tensor,
stop_at_grad=False)
energy_pos_full = tf.reshape(energy_pos, (ind_batch_size, 10))
energy_partition_est = tf.reduce_logsumexp(energy_pos_full,
axis=1,
keepdims=True)
uniform = tf.random_uniform(tf.shape(energy_pos_full))
label_tensor = tf.argmax(-energy_pos_full -
tf.log(-tf.log(uniform)) -
energy_partition_est,
axis=1)
label = tf.one_hot(label_tensor, 10, dtype=tf.float32)
label = tf.Print(label, [label_tensor, energy_pos_full])
LABEL_SPLIT[j] = label
energy_pos = tf.concat(energy_pos, axis=0)
else:
energy_pos = [
model.forward(X_SPLIT[j],
weights[0],
label=LABEL_POS_SPLIT[j],
stop_at_grad=False)
]
energy_pos = tf.concat(energy_pos, axis=0)
print("Building graph...")
x_mod = x_orig = X_NOISE_SPLIT[j]
x_grads = []
energy_negs = []
loss_energys = []
energy_negs.extend([
model.forward(tf.stop_gradient(x_mod),
weights[0],
label=LABEL_SPLIT[j],
stop_at_grad=False,
reuse=True)
])
eps_begin = tf.zeros(1)
steps = tf.constant(0)
c = lambda i, x: tf.less(i, FLAGS.num_steps)
def langevin_step(counter, x_mod):
x_mod = x_mod + tf.random_normal(
tf.shape(x_mod),
mean=0.0,
stddev=0.005 * FLAGS.rescale * FLAGS.noise_scale)
energy_noise = energy_start = tf.concat([
model.forward(x_mod,
weights[0],
label=LABEL_SPLIT[j],
reuse=True,
stop_at_grad=False,
stop_batch=True)
],
axis=0)
x_grad, label_grad = tf.gradients(FLAGS.temperature * energy_noise,
[x_mod, LABEL_SPLIT[j]])
energy_noise_old = energy_noise
lr = FLAGS.step_lr
if FLAGS.proj_norm != 0.0:
if FLAGS.proj_norm_type == 'l2':
x_grad = tf.clip_by_norm(x_grad, FLAGS.proj_norm)
elif FLAGS.proj_norm_type == 'li':
x_grad = tf.clip_by_value(x_grad, -FLAGS.proj_norm,
FLAGS.proj_norm)
else:
print("Other types of projection are not supported!!!")
assert False
# Clip gradient norm for now
if FLAGS.hmc:
# Step size should be tuned to get around 65% acceptance
def energy(x):
return FLAGS.temperature * \
model.forward(x, weights[0], label=LABEL_SPLIT[j], reuse=True)
x_last = hmc(x_mod, 15., 10, energy)
else:
x_last = x_mod - (lr) * x_grad
x_mod = x_last
x_mod = tf.clip_by_value(x_mod, 0, FLAGS.rescale)
counter = counter + 1
return counter, x_mod
steps, x_mod = tf.while_loop(c, langevin_step, (steps, x_mod))
energy_eval = model.forward(x_mod,
weights[0],
label=LABEL_SPLIT[j],
stop_at_grad=False,
reuse=True)
x_grad = tf.gradients(FLAGS.temperature * energy_eval, [x_mod])[0]
x_grads.append(x_grad)
energy_negs.append(
model.forward(tf.stop_gradient(x_mod),
weights[0],
label=LABEL_SPLIT[j],
stop_at_grad=False,
reuse=True))
test_x_mod = x_mod
temp = FLAGS.temperature
energy_neg = energy_negs[-1]
x_off = tf.reduce_mean(
tf.abs(x_mod[:tf.shape(X_SPLIT[j])[0]] - X_SPLIT[j]))
loss_energy = model.forward(x_mod,
weights[0],
reuse=True,
label=LABEL,
stop_grad=True)
print("Finished processing loop construction ...")
target_vars = {}
if FLAGS.cclass or FLAGS.model_cclass:
label_sum = tf.reduce_sum(LABEL_SPLIT[0], axis=0)
label_prob = label_sum / tf.reduce_sum(label_sum)
label_ent = -tf.reduce_sum(
label_prob * tf.math.log(label_prob + 1e-7))
else:
label_ent = tf.zeros(1)
target_vars['label_ent'] = label_ent
if FLAGS.train:
if FLAGS.objective == 'logsumexp':
pos_term = temp * energy_pos
energy_neg_reduced = (energy_neg - tf.reduce_min(energy_neg))
coeff = tf.stop_gradient(tf.exp(-temp * energy_neg_reduced))
norm_constant = tf.stop_gradient(tf.reduce_sum(coeff)) + 1e-4
pos_loss = tf.reduce_mean(temp * energy_pos)
neg_loss = coeff * (-1 * temp * energy_neg) / norm_constant
loss_ml = FLAGS.ml_coeff * (pos_loss + tf.reduce_sum(neg_loss))
elif FLAGS.objective == 'cd':
pos_loss = tf.reduce_mean(temp * energy_pos)
neg_loss = -tf.reduce_mean(temp * energy_neg)
loss_ml = FLAGS.ml_coeff * (pos_loss + tf.reduce_sum(neg_loss))
elif FLAGS.objective == 'softplus':
loss_ml = FLAGS.ml_coeff * \
tf.nn.softplus(temp * (energy_pos - energy_neg))
loss_total = tf.reduce_mean(loss_ml)
if not FLAGS.zero_kl:
loss_total = loss_total + tf.reduce_mean(loss_energy)
loss_total = loss_total + \
FLAGS.l2_coeff * (tf.reduce_mean(tf.square(energy_pos)) + tf.reduce_mean(tf.square((energy_neg))))
print("Started gradient computation...")
gvs = optimizer.compute_gradients(loss_total)
gvs = [(k, v) for (k, v) in gvs if k is not None]
print("Applying gradients...")
tower_grads.append(gvs)
print("Finished applying gradients.")
target_vars['loss_ml'] = loss_ml
target_vars['total_loss'] = loss_total
target_vars['loss_energy'] = loss_energy
target_vars['weights'] = weights
target_vars['gvs'] = gvs
target_vars['X'] = X
target_vars['Y'] = Y
target_vars['LABEL'] = LABEL
target_vars['LABEL_POS'] = LABEL_POS
target_vars['X_NOISE'] = X_NOISE
target_vars['energy_pos'] = energy_pos
target_vars['energy_start'] = energy_negs[0]
if len(x_grads) >= 1:
target_vars['x_grad'] = x_grads[-1]
target_vars['x_grad_first'] = x_grads[0]
else:
target_vars['x_grad'] = tf.zeros(1)
target_vars['x_grad_first'] = tf.zeros(1)
target_vars['x_mod'] = x_mod
target_vars['x_off'] = x_off
target_vars['temp'] = temp
target_vars['energy_neg'] = energy_neg
target_vars['test_x_mod'] = test_x_mod
target_vars['eps_begin'] = eps_begin
if FLAGS.train:
grads = average_gradients(tower_grads)
train_op = optimizer.apply_gradients(grads)
target_vars['train_op'] = train_op
config = tf.ConfigProto()
if hvd.size() > 1:
config.gpu_options.visible_device_list = str(hvd.local_rank())
sess = tf.Session(config=config)
saver = loader = tf.train.Saver(max_to_keep=30,
keep_checkpoint_every_n_hours=6)
total_parameters = 0
for variable in tf.trainable_variables():
# shape is an array of tf.Dimension
shape = variable.get_shape()
variable_parameters = 1
for dim in shape:
variable_parameters *= dim.value
total_parameters += variable_parameters
print("Model has a total of {} parameters".format(total_parameters))
sess.run(tf.global_variables_initializer())
resume_itr = 0
if (FLAGS.resume_iter != -1 or not FLAGS.train) and hvd.rank() == 0:
model_file = osp.join(logdir, 'model_{}'.format(FLAGS.resume_iter))
resume_itr = FLAGS.resume_iter
# saver.restore(sess, model_file)
optimistic_restore(sess, model_file)
sess.run(hvd.broadcast_global_variables(0))
print("Initializing variables...")
print("Start broadcast")
print("End broadcast")
if FLAGS.train:
print("Training phase")
train(target_vars, saver, sess, logger, data_loader, resume_itr,
logdir)
print("Testing phase")
test(target_vars, saver, sess, logger, data_loader)
def compute_inception(sess, target_vars):
X_START = target_vars['X_START']
Y_GT = target_vars['Y_GT']
X_finals = target_vars['X_finals']
NOISE_SCALE = target_vars['NOISE_SCALE']
energy_noise = target_vars['energy_noise']
size = FLAGS.im_number
num_steps = size // 1000
images = []
test_ims = []
test_images = []
if FLAGS.dataset == "cifar10":
test_dataset = Cifar10(full=True, noise=False)
elif FLAGS.dataset == "celeba":
dataset = CelebA()
elif FLAGS.dataset == "imagenet" or FLAGS.dataset == "imagenetfull":
test_dataset = Imagenet(train=False)
if FLAGS.dataset != "imagenetfull":
test_dataloader = DataLoader(test_dataset, batch_size=FLAGS.batch_size, num_workers=4, shuffle=True, drop_last=False)
else:
test_dataloader = TFImagenetLoader('test', FLAGS.batch_size, 0, 1)
for data_corrupt, data, label_gt in tqdm(test_dataloader):
data = data.numpy()
test_ims.extend(list(rescale_im(data)))
if FLAGS.dataset == "imagenetfull" and len(test_ims) > 60000:
test_ims = test_ims[:60000]
break
# n = min(len(images), len(test_ims))
print(len(test_ims))
# fid = get_fid_score(test_ims[:30000], test_ims[-30000:])
# print("Base FID of score {}".format(fid))
if FLAGS.dataset == "cifar10":
classes = 10
else:
classes = 1000
if FLAGS.dataset == "imagenetfull":
n = 128
else:
n = 32
for j in range(num_steps):
itr = int(1000 / 500 * FLAGS.repeat_scale)
data_buffer = InceptionReplayBuffer(1000)
curr_index = 0
identity = np.eye(classes)
test_steps = range(300, itr, 20)
for i in tqdm(range(itr)):
model_index = curr_index % len(X_finals)
x_final = X_finals[model_index]
noise_scale = [1]
if len(data_buffer) < 1000:
x_init = np.random.uniform(0, 1, (FLAGS.batch_size, n, n, 3))
label = np.random.randint(0, classes, (FLAGS.batch_size))
label = identity[label]
x_new = sess.run([x_final], {X_START:x_init, Y_GT:label, NOISE_SCALE: noise_scale})[0]
data_buffer.add(x_new, label)
else:
(x_init, label), idx = data_buffer.sample(FLAGS.batch_size)
keep_mask = (np.random.uniform(0, 1, (FLAGS.batch_size)) > 0.99)
label_keep_mask = (np.random.uniform(0, 1, (FLAGS.batch_size)) > 0.9)
label_corrupt = np.random.randint(0, classes, (FLAGS.batch_size))
label_corrupt = identity[label_corrupt]
x_init_corrupt = np.random.uniform(0, 1, (FLAGS.batch_size, n, n, 3))
if i < itr - FLAGS.nomix:
x_init[keep_mask] = x_init_corrupt[keep_mask]
label[label_keep_mask] = label_corrupt[label_keep_mask]
# else:
# noise_scale = [0.7]
x_new, e_noise = sess.run([x_final, energy_noise], {X_START:x_init, Y_GT:label, NOISE_SCALE: noise_scale})
data_buffer.set_elms(idx, x_new, label)
curr_index += 1
ims = np.array(data_buffer._storage[:1000])
ims = rescale_im(ims)
test_images.extend(list(ims))
saveim = osp.join(FLAGS.logdir, FLAGS.exp, "test{}.png".format(FLAGS.resume_iter))
row = 15
col = 20
ims = ims[:row * col]
if FLAGS.dataset != "imagenetfull":
im_panel = ims.reshape((row, col, 32, 32, 3)).transpose((0, 2, 1, 3, 4)).reshape((32*row, 32*col, 3))
else:
im_panel = ims.reshape((row, col, 128, 128, 3)).transpose((0, 2, 1, 3, 4)).reshape((128*row, 128*col, 3))
imsave(saveim, im_panel)
splits = max(1, len(test_images) // 5000)
score, std = get_inception_score(test_images, splits=splits)
print("Inception score of {} with std of {}".format(score, std))
# FID score
# n = min(len(images), len(test_ims))
fid = get_fid_score(test_images, test_ims)
print("FID of score {}".format(fid))
def main():
# Initialize dataset
if FLAGS.dataset == 'cifar10':
dataset = Cifar10(train=False, rescale=FLAGS.rescale)
channel_num = 3
dim_input = 32 * 32 * 3
elif FLAGS.dataset == 'imagenet':
dataset = ImagenetClass()
channel_num = 3
dim_input = 64 * 64 * 3
elif FLAGS.dataset == 'mnist':
dataset = Mnist(train=False, rescale=FLAGS.rescale)
channel_num = 1
dim_input = 28 * 28 * 1
elif FLAGS.dataset == 'dsprites':
dataset = DSprites()
channel_num = 1
dim_input = 64 * 64 * 1
elif FLAGS.dataset == '2d' or FLAGS.dataset == 'gauss':
dataset = Box2D()
dim_output = 1
data_loader = DataLoader(dataset,
batch_size=FLAGS.batch_size,
num_workers=FLAGS.data_workers,
drop_last=False,
shuffle=True)
if FLAGS.dataset == 'mnist':
model = MnistNet(num_channels=channel_num)
elif FLAGS.dataset == 'cifar10':
if FLAGS.large_model:
model = ResNet32Large(num_filters=128)
elif FLAGS.wider_model:
model = ResNet32Wider(num_filters=192)
else:
model = ResNet32(num_channels=channel_num, num_filters=128)
elif FLAGS.dataset == 'dsprites':
model = DspritesNet(num_channels=channel_num,
num_filters=FLAGS.num_filters)
weights = model.construct_weights('context_{}'.format(0))
config = tf.ConfigProto()
sess = tf.Session(config=config)
saver = loader = tf.train.Saver(max_to_keep=10)
sess.run(tf.global_variables_initializer())
logdir = osp.join(FLAGS.logdir, FLAGS.exp)
model_file = osp.join(logdir, 'model_{}'.format(FLAGS.resume_iter))
resume_itr = FLAGS.resume_iter
if FLAGS.resume_iter != "-1":
optimistic_restore(sess, model_file)
else:
print("WARNING, YOU ARE NOT LOADING A SAVE FILE")
# saver.restore(sess, model_file)
chain_weights, a_prev, a_new, x, x_init, approx_lr = ancestral_sample(
model, weights, FLAGS.batch_size, temp=FLAGS.temperature)
print("Finished constructing ancestral sample ...................")
if FLAGS.dataset != "gauss":
comb_weights_cum = []
batch_size = tf.shape(x_init)[0]
label_tiled = tf.tile(label_default, (batch_size, 1))
e_compute = -FLAGS.temperature * model.forward(
x_init, weights, label=label_tiled)
e_pos_list = []
for data_corrupt, data, label_gt in tqdm(data_loader):
e_pos = sess.run([e_compute], {x_init: data})[0]
e_pos_list.extend(list(e_pos))
print(len(e_pos_list))
print("Positive sample probability ", np.mean(e_pos_list),
np.std(e_pos_list))
if FLAGS.dataset == "2d":
alr = 0.0045
elif FLAGS.dataset == "gauss":
alr = 0.0085
elif FLAGS.dataset == "mnist":
alr = 0.0065
#90 alr = 0.0035
else:
# alr = 0.0125
if FLAGS.rescale == 8:
alr = 0.0085
else:
alr = 0.0045
#
for i in range(1):
tot_weight = 0
for j in tqdm(range(1, FLAGS.pdist + 1)):
if j == 1:
if FLAGS.dataset == "cifar10":
x_curr = np.random.uniform(0,
FLAGS.rescale,
size=(FLAGS.batch_size, 32, 32,
3))
elif FLAGS.dataset == "gauss":
x_curr = np.random.uniform(0,
FLAGS.rescale,
size=(FLAGS.batch_size,
FLAGS.gauss_dim))
elif FLAGS.dataset == "mnist":
x_curr = np.random.uniform(0,
FLAGS.rescale,
size=(FLAGS.batch_size, 28, 28))
else:
x_curr = np.random.uniform(0,
FLAGS.rescale,
size=(FLAGS.batch_size, 2))
alpha_prev = (j - 1) / FLAGS.pdist
alpha_new = j / FLAGS.pdist
cweight, x_curr = sess.run(
[chain_weights, x], {
a_prev: alpha_prev,
a_new: alpha_new,
x_init: x_curr,
approx_lr: alr * (5**(2.5 * -alpha_prev))
})
tot_weight = tot_weight + cweight
print("Total values of lower value based off forward sampling",
np.mean(tot_weight), np.std(tot_weight))
tot_weight = 0
for j in tqdm(range(FLAGS.pdist, 0, -1)):
alpha_new = (j - 1) / FLAGS.pdist
alpha_prev = j / FLAGS.pdist
cweight, x_curr = sess.run(
[chain_weights, x], {
a_prev: alpha_prev,
a_new: alpha_new,
x_init: x_curr,
approx_lr: alr * (5**(2.5 * -alpha_prev))
})
tot_weight = tot_weight - cweight
print("Total values of upper value based off backward sampling",
np.mean(tot_weight), np.std(tot_weight))
return inception_score
def test_unconditional(self, data_loader):
print("Testing phase")
inception_score = test(self.target_vars,
self.saver,
self.sess,
self.logger,
data_loader)
return inception_score
if __name__ == "__main__":
print("Loading data...")
path = "/home/abhi/Documents/courses/UofT/CSC2506/project/data/cifar10"
train_dataset = Cifar10(train=True, augment=FLAGS.augment, rescale=FLAGS.rescale, path=path)
train_dataset_1 = torch.utils.data.Subset(train_dataset, list(range(0, 1000, 2)))
print("Length of train_dataset:%d"%len(train_dataset_1))
data_loader = DataLoader(train_dataset_1, batch_size=FLAGS.batch_size, num_workers=FLAGS.data_workers, drop_last=True, shuffle=True)
print("Done loading...")
base_functions=[elu,gelu,linear,relu,selu,sigmoid,softplus,swish,tanh,atan,cos,erf,sin,sqrt]
base_operations=[maximum,minimum,add,subtract]
evo=EvolutionaryAlgorithm(base_functions,base_operations,min_depth=1,max_depth=3,pop_size=10)
initial_gen = evo.create_generation()
custom_act = compile(initial_gen[0], pset=evo.pset)
ebm_prob = EBMProbML(tf.nn.leaky_relu)
# ebm_prob = EBMProbML(custom_act)
train_inc_score = ebm_prob.train_unconditional(data_loader)
def main():
if FLAGS.dataset == "cifar10":
dataset = Cifar10(train=True, noise=False)
test_dataset = Cifar10(train=False, noise=False)
else:
dataset = Imagenet(train=True)
test_dataset = Imagenet(train=False)
if FLAGS.svhn:
dataset = Svhn(train=True)
test_dataset = Svhn(train=False)
if FLAGS.task == 'latent':
dataset = DSprites()
test_dataset = dataset
dataloader = DataLoader(dataset,
batch_size=FLAGS.batch_size,
num_workers=FLAGS.data_workers,
shuffle=True,
drop_last=True)
test_dataloader = DataLoader(test_dataset,
batch_size=FLAGS.batch_size,
num_workers=FLAGS.data_workers,
shuffle=True,
drop_last=True)
hidden_dim = 128
if FLAGS.large_model:
model = ResNet32Large(num_filters=hidden_dim)
elif FLAGS.larger_model:
model = ResNet32Larger(num_filters=hidden_dim)
elif FLAGS.wider_model:
if FLAGS.dataset == 'imagenet':
model = ResNet32Wider(num_filters=196, train=False)
else:
model = ResNet32Wider(num_filters=256, train=False)
else:
model = ResNet32(num_filters=hidden_dim)
if FLAGS.task == 'latent':
model = DspritesNet()
weights = model.construct_weights('context_{}'.format(0))
total_parameters = 0
for variable in tf.compat.v1.trainable_variables():
# shape is an array of tf.Dimension
shape = variable.get_shape()
variable_parameters = 1
for dim in shape:
variable_parameters *= dim.value
total_parameters += variable_parameters
print("Model has a total of {} parameters".format(total_parameters))
config = tf.compat.v1.ConfigProto()
sess = tf.compat.v1.InteractiveSession()
if FLAGS.task == 'latent':
X = tf.compat.v1.placeholder(shape=(None, 64, 64), dtype=tf.float32)
else:
X = tf.compat.v1.placeholder(shape=(None, 32, 32, 3), dtype=tf.float32)
if FLAGS.dataset == "cifar10":
Y = tf.compat.v1.placeholder(shape=(None, 10), dtype=tf.float32)
Y_GT = tf.compat.v1.placeholder(shape=(None, 10), dtype=tf.float32)
elif FLAGS.dataset == "imagenet":
Y = tf.compat.v1.placeholder(shape=(None, 1000), dtype=tf.float32)
Y_GT = tf.compat.v1.placeholder(shape=(None, 1000), dtype=tf.float32)
target_vars = {'X': X, 'Y': Y, 'Y_GT': Y_GT}
if FLAGS.task == 'label':
construct_label(weights, X, Y, Y_GT, model, target_vars)
elif FLAGS.task == 'labelfinetune':
construct_finetune_label(
weights,
X,
Y,
Y_GT,
model,
target_vars,
)
elif FLAGS.task == 'energyeval' or FLAGS.task == 'mixenergy':
construct_energy(weights, X, Y, Y_GT, model, target_vars)
elif FLAGS.task == 'anticorrupt' or FLAGS.task == 'boxcorrupt' or FLAGS.task == 'crossclass' or FLAGS.task == 'cycleclass' or FLAGS.task == 'democlass' or FLAGS.task == 'nearestneighbor':
construct_steps(weights, X, Y_GT, model, target_vars)
elif FLAGS.task == 'latent':
construct_latent(weights, X, Y_GT, model, target_vars)
sess.run(tf.compat.v1.global_variables_initializer())
saver = loader = tf.compat.v1.train.Saver(max_to_keep=10)
savedir = osp.join('cachedir', FLAGS.exp)
logdir = osp.join(FLAGS.logdir, FLAGS.exp)
if not osp.exists(logdir):
os.makedirs(logdir)
initialize()
if FLAGS.resume_iter != -1:
model_file = osp.join(savedir, 'model_{}'.format(FLAGS.resume_iter))
resume_itr = FLAGS.resume_iter
if FLAGS.task == 'label' or FLAGS.task == 'boxcorrupt' or FLAGS.task == 'labelfinetune' or FLAGS.task == "energyeval" or FLAGS.task == "crossclass" or FLAGS.task == "mixenergy":
optimistic_restore(sess, model_file)
# saver.restore(sess, model_file)
else:
# optimistic_restore(sess, model_file)
saver.restore(sess, model_file)
if FLAGS.task == 'label':
if FLAGS.labelgrid:
vals = []
if FLAGS.lnorm == -1:
for i in range(31):
accuracies = label(dataloader,
test_dataloader,
target_vars,
sess,
l1val=i)
vals.append(accuracies)
elif FLAGS.lnorm == 2:
for i in range(0, 100, 5):
accuracies = label(dataloader,
test_dataloader,
target_vars,
sess,
l2val=i)
vals.append(accuracies)
np.save("result_{}_{}.npy".format(FLAGS.lnorm, FLAGS.exp), vals)
else:
label(dataloader, test_dataloader, target_vars, sess)
elif FLAGS.task == 'labelfinetune':
labelfinetune(dataloader,
test_dataloader,
target_vars,
sess,
savedir,
saver,
l1val=FLAGS.lival,
l2val=FLAGS.l2val)
elif FLAGS.task == 'energyeval':
energyeval(dataloader, test_dataloader, target_vars, sess)
elif FLAGS.task == 'mixenergy':
energyevalmix(dataloader, test_dataloader, target_vars, sess)
elif FLAGS.task == 'anticorrupt':
anticorrupt(test_dataloader, weights, model, target_vars, logdir, sess)
elif FLAGS.task == 'boxcorrupt':
# boxcorrupt(test_dataloader, weights, model, target_vars, logdir, sess)
boxcorrupt(test_dataloader, dataloader, weights, model, target_vars,
logdir, sess)
elif FLAGS.task == 'crossclass':
crossclass(test_dataloader, weights, model, target_vars, logdir, sess)
elif FLAGS.task == 'cycleclass':
cycleclass(test_dataloader, weights, model, target_vars, logdir, sess)
elif FLAGS.task == 'democlass':
democlass(test_dataloader, weights, model, target_vars, logdir, sess)
elif FLAGS.task == 'nearestneighbor':
# print(dir(dataset))
# print(type(dataset))
nearest_neighbor(dataset.data.train_data / 255, sess, target_vars,
logdir)
elif FLAGS.task == 'latent':
latent(test_dataloader, weights, model, target_vars, sess)
from datetime import datetime
from torch import nn, optim
from torch.utils import data
from data import Cifar10, FashionMNIST
from model import MLP, ConvNet, OneLayer
from utils import train, test
from config import Config as config
print(f"{datetime.now().ctime()} - Start Loading Dataset...")
if config.dataset == "cifar10":
train_dataset = Cifar10(config.root, train=True)
test_dataset = Cifar10(config.root, train=False)
elif config.dataset == "fashionmnist":
train_dataset = FashionMNIST(config.root, train=True)
test_dataset = FashionMNIST(config.root, train=False)
train_dataloader = data.DataLoader(train_dataset,
config.batch_size,
shuffle=True,
num_workers=2)
test_dataloader = data.DataLoader(test_dataset,
config.batch_size,
shuffle=False,
num_workers=2)
print(f"{datetime.now().ctime()} - Finish Loading Dataset")
print(
f"{datetime.now().ctime()} - Start Creating Net, Criterion, Optimizer and Scheduler..."
)
if config.model == "mlp":
net = MLP(config.cifar10_input_size, config.num_classes)
elif config.model == "convnet":
from config import DefaultConfig
from data import Cifar10
import models
from Trainer import Trainer
import csv
import matplotlib.pyplot as plt
import os
from torchvision import datasets, transforms
opt = DefaultConfig()
if not os.path.exists(opt.train_data_root):
from precifar import *
Precifar()
train_data = Cifar10(opt.train_data_root, train=True)
val_data = Cifar10(opt.train_data_root, train=False)
test_data = Cifar10(opt.test_data_root, test=True)
Model = getattr(models, opt.model)()
if opt.load_model_path:
Model.load(opt.load_model_path)
Cifar_Trainer = Trainer(Model, opt)
Cifar_Trainer.train(train_data, val_data)
Model.save(opt.save_model_path)
results, confusion_matrix, accuracy = Cifar_Trainer.test(test_data)
with open(opt.result_file, 'wt', newline='', encoding='utf-8') as csvfile:
try:
def main():
print("Local rank: ", hvd.local_rank(), hvd.size())
FLAGS.exp = FLAGS.exp + '_' + FLAGS.divergence
logdir = osp.join(FLAGS.logdir, FLAGS.exp)
if hvd.rank() == 0:
if not osp.exists(logdir):
os.makedirs(logdir)
logger = TensorBoardOutputFormat(logdir)
else:
logger = None
print("Loading data...")
dataset = Cifar10(augment=FLAGS.augment, rescale=FLAGS.rescale)
test_dataset = Cifar10(train=False, rescale=FLAGS.rescale)
channel_num = 3
X_NOISE = tf.placeholder(shape=(None, 32, 32, 3), dtype=tf.float32)
X = tf.placeholder(shape=(None, 32, 32, 3), dtype=tf.float32)
LABEL = tf.placeholder(shape=(None, 10), dtype=tf.float32)
LABEL_POS = tf.placeholder(shape=(None, 10), dtype=tf.float32)
if FLAGS.large_model:
model = ResNet32Large(
num_channels=channel_num,
num_filters=128,
train=True)
model_dis = ResNet32Large(
num_channels=channel_num,
num_filters=128,
train=True)
elif FLAGS.larger_model:
model = ResNet32Larger(
num_channels=channel_num,
num_filters=128)
model_dis = ResNet32Larger(
num_channels=channel_num,
num_filters=128)
elif FLAGS.wider_model:
model = ResNet32Wider(
num_channels=channel_num,
num_filters=256)
model_dis = ResNet32Wider(
num_channels=channel_num,
num_filters=256)
else:
model = ResNet32(
num_channels=channel_num,
num_filters=128)
model_dis = ResNet32(
num_channels=channel_num,
num_filters=128)
print("Done loading...")
grad_exp, conjugate_grad_exp = get_divergence_funcs(FLAGS.divergence)
data_loader = DataLoader(
dataset,
batch_size=FLAGS.batch_size,
num_workers=FLAGS.data_workers,
drop_last=True,
shuffle=True)
weights = [model.construct_weights('context_energy'), model_dis.construct_weights('context_dis')]
Y = tf.placeholder(shape=(None), dtype=tf.int32)
# Varibles to run in training
X_SPLIT = tf.split(X, FLAGS.num_gpus)
X_NOISE_SPLIT = tf.split(X_NOISE, FLAGS.num_gpus)
LABEL_SPLIT = tf.split(LABEL, FLAGS.num_gpus)
LABEL_POS_SPLIT = tf.split(LABEL_POS, FLAGS.num_gpus)
LABEL_SPLIT_INIT = list(LABEL_SPLIT)
tower_grads = []
tower_grads_dis = []
tower_grads_l2 = []
tower_grads_dis_l2 = []
optimizer = AdamOptimizer(FLAGS.lr, beta1=0.0, beta2=0.999)
optimizer = hvd.DistributedOptimizer(optimizer)
optimizer_dis = AdamOptimizer(FLAGS.lr, beta1=0.0, beta2=0.999)
optimizer_dis = hvd.DistributedOptimizer(optimizer_dis)
for j in range(FLAGS.num_gpus):
energy_pos = [
model.forward(
X_SPLIT[j],
weights[0],
label=LABEL_POS_SPLIT[j],
stop_at_grad=False)]
energy_pos = tf.concat(energy_pos, axis=0)
score_pos = [
model_dis.forward(
X_SPLIT[j],
weights[1],
label=LABEL_POS_SPLIT[j],
stop_at_grad=False)]
score_pos = tf.concat(score_pos, axis=0)
print("Building graph...")
x_mod = x_orig = X_NOISE_SPLIT[j]
x_grads = []
energy_negs = []
loss_energys = []
energy_negs.extend([model.forward(tf.stop_gradient(
x_mod), weights[0], label=LABEL_SPLIT[j], stop_at_grad=False, reuse=True)])
eps_begin = tf.zeros(1)
steps = tf.constant(0)
c = lambda i, x: tf.less(i, FLAGS.num_steps)
def langevin_step(counter, x_mod):
x_mod = x_mod + tf.random_normal(tf.shape(x_mod),
mean=0.0,
stddev=0.005 * FLAGS.rescale * FLAGS.noise_scale)
energy_noise = energy_start = tf.concat(
[model.forward(
x_mod,
weights[0],
label=LABEL_SPLIT[j],
reuse=True,
stop_at_grad=False,
stop_batch=True)],
axis=0)
x_grad, label_grad = tf.gradients(energy_noise, [x_mod, LABEL_SPLIT[j]])
energy_noise_old = energy_noise
lr = FLAGS.step_lr
if FLAGS.proj_norm != 0.0:
if FLAGS.proj_norm_type == 'l2':
x_grad = tf.clip_by_norm(x_grad, FLAGS.proj_norm)
elif FLAGS.proj_norm_type == 'li':
x_grad = tf.clip_by_value(
x_grad, -FLAGS.proj_norm, FLAGS.proj_norm)
else:
print("Other types of projection are not supported!!!")
assert False
# Clip gradient norm for now
if FLAGS.hmc:
# Step size should be tuned to get around 65% acceptance
def energy(x):
return FLAGS.temperature * \
model.forward(x, weights[0], label=LABEL_SPLIT[j], reuse=True)
x_last = hmc(x_mod, 15., 10, energy)
else:
x_last = x_mod - (lr) * x_grad
x_mod = x_last
x_mod = tf.clip_by_value(x_mod, 0, FLAGS.rescale)
counter = counter + 1
return counter, x_mod
steps, x_mod = tf.while_loop(c, langevin_step, (steps, x_mod))
energy_eval = model.forward(x_mod, weights[0], label=LABEL_SPLIT[j],
stop_at_grad=False, reuse=True)
x_grad = tf.gradients(energy_eval, [x_mod])[0]
x_grads.append(x_grad)
energy_negs.append(
model.forward(
tf.stop_gradient(x_mod),
weights[0],
label=LABEL_SPLIT[j],
stop_at_grad=False,
reuse=True))
score_neg = model_dis.forward(
tf.stop_gradient(x_mod),
weights[1],
label=LABEL_SPLIT[j],
stop_at_grad=False,
reuse=True)
test_x_mod = x_mod
temp = FLAGS.temperature
energy_neg = energy_negs[-1]
x_off = tf.reduce_mean(
tf.abs(x_mod[:tf.shape(X_SPLIT[j])[0]] - X_SPLIT[j]))
loss_energy = model.forward(
x_mod,
weights[0],
reuse=True,
label=LABEL,
stop_grad=True)
print("Finished processing loop construction ...")
target_vars = {}
if FLAGS.cclass or FLAGS.model_cclass:
label_sum = tf.reduce_sum(LABEL_SPLIT[0], axis=0)
label_prob = label_sum / tf.reduce_sum(label_sum)
label_ent = -tf.reduce_sum(label_prob *
tf.math.log(label_prob + 1e-7))
else:
label_ent = tf.zeros(1)
target_vars['label_ent'] = label_ent
if FLAGS.train:
loss_dis = - (tf.reduce_mean(grad_exp(score_pos + energy_pos)) - tf.reduce_mean(conjugate_grad_exp(score_neg + energy_neg)))
loss_dis = loss_dis + FLAGS.l2_coeff * (tf.reduce_mean(tf.square(score_pos)) + tf.reduce_mean(tf.square(score_neg)))
l2_dis = FLAGS.l2_coeff * (tf.reduce_mean(tf.square(score_pos)) + tf.reduce_mean(tf.square(score_neg)))
loss_model = tf.reduce_mean(grad_exp(score_pos + energy_pos)) + \
tf.reduce_mean(energy_neg * tf.stop_gradient(conjugate_grad_exp(score_neg + energy_neg))) - \
tf.reduce_mean(energy_neg) * tf.stop_gradient(tf.reduce_mean(conjugate_grad_exp(score_neg + energy_neg))) - \
tf.reduce_mean(conjugate_grad_exp(score_neg + energy_neg))
loss_model = loss_model + FLAGS.l2_coeff * (tf.reduce_mean(tf.square(energy_pos)) + tf.reduce_mean(tf.square(energy_neg)))
l2_model = FLAGS.l2_coeff * (tf.reduce_mean(tf.square(energy_pos)) + tf.reduce_mean(tf.square(energy_neg)))
print("Started gradient computation...")
model_vars = [var for var in tf.trainable_variables() if 'context_energy' in var.name]
print("model var number", len(model_vars))
dis_vars = [var for var in tf.trainable_variables() if 'context_dis' in var.name]
print("discriminator var number", len(dis_vars))
gvs = optimizer.compute_gradients(loss_model, model_vars)
gvs = [(k, v) for (k, v) in gvs if k is not None]
tower_grads.append(gvs)
gvs = optimizer.compute_gradients(l2_model, model_vars)
gvs = [(k, v) for (k, v) in gvs if k is not None]
tower_grads_l2.append(gvs)
gvs_dis = optimizer_dis.compute_gradients(loss_dis, dis_vars)
gvs_dis = [(k, v) for (k, v) in gvs_dis if k is not None]
tower_grads_dis.append(gvs_dis)
gvs_dis = optimizer_dis.compute_gradients(l2_dis, dis_vars)
gvs_dis = [(k, v) for (k, v) in gvs_dis if k is not None]
tower_grads_dis_l2.append(gvs_dis)
print("Finished applying gradients.")
target_vars['total_loss'] = loss_model
target_vars['loss_energy'] = loss_energy
target_vars['weights'] = weights
target_vars['gvs'] = gvs
target_vars['X'] = X
target_vars['Y'] = Y
target_vars['LABEL'] = LABEL
target_vars['LABEL_POS'] = LABEL_POS
target_vars['X_NOISE'] = X_NOISE
target_vars['energy_pos'] = energy_pos
target_vars['energy_start'] = energy_negs[0]
if len(x_grads) >= 1:
target_vars['x_grad'] = x_grads[-1]
target_vars['x_grad_first'] = x_grads[0]
else:
target_vars['x_grad'] = tf.zeros(1)
target_vars['x_grad_first'] = tf.zeros(1)
target_vars['x_mod'] = x_mod
target_vars['x_off'] = x_off
target_vars['temp'] = temp
target_vars['energy_neg'] = energy_neg
target_vars['test_x_mod'] = test_x_mod
target_vars['eps_begin'] = eps_begin
target_vars['score_neg'] = score_neg
target_vars['score_pos'] = score_pos
if FLAGS.train:
grads_model = average_gradients(tower_grads)
train_op_model = optimizer.apply_gradients(grads_model)
target_vars['train_op_model'] = train_op_model
grads_model_l2 = average_gradients(tower_grads_l2)
train_op_model_l2 = optimizer.apply_gradients(grads_model_l2)
target_vars['train_op_model_l2'] = train_op_model_l2
grads_model_dis = average_gradients(tower_grads_dis)
train_op_dis = optimizer_dis.apply_gradients(grads_model_dis)
target_vars['train_op_dis'] = train_op_dis
grads_model_dis_l2 = average_gradients(tower_grads_dis_l2)
train_op_dis_l2 = optimizer_dis.apply_gradients(grads_model_dis_l2)
target_vars['train_op_dis_l2'] = train_op_dis_l2
config = tf.ConfigProto()
if hvd.size() > 1:
config.gpu_options.visible_device_list = str(hvd.local_rank())
sess = tf.Session(config=config)
saver = loader = tf.train.Saver(max_to_keep=500)
total_parameters = 0
for variable in tf.trainable_variables():
# shape is an array of tf.Dimension
shape = variable.get_shape()
variable_parameters = 1
for dim in shape:
variable_parameters *= dim.value
total_parameters += variable_parameters
print("Model has a total of {} parameters".format(total_parameters))
sess.run(tf.global_variables_initializer())
resume_itr = 0
if (FLAGS.resume_iter != -1 or not FLAGS.train) and hvd.rank() == 0:
model_file = osp.join(logdir, 'model_{}'.format(FLAGS.resume_iter))
resume_itr = FLAGS.resume_iter
saver.restore(sess, model_file)
# optimistic_restore(sess, model_file)
sess.run(hvd.broadcast_global_variables(0))
print("Initializing variables...")
print("Start broadcast")
print("End broadcast")
if FLAGS.train:
train(target_vars, saver, sess,
logger, data_loader, resume_itr,
logdir)
test(target_vars, saver, sess, logger, data_loader)
def main():
# Initialize dataset
dataset = Cifar10(FLAGS, train=False, rescale=FLAGS.rescale)
data_loader = DataLoader(dataset,
batch_size=FLAGS.batch_size,
num_workers=4,
drop_last=False,
shuffle=True)
logdir = osp.join(FLAGS.logdir, FLAGS.exp)
model_path = osp.join(logdir, "model_best.pth")
checkpoint = torch.load(model_path)
FLAGS_model = checkpoint['FLAGS']
model = ResNetModel(FLAGS_model).eval().cuda()
if FLAGS.ema:
model.load_state_dict(checkpoint['ema_model_state_dict_0'])
else:
model.load_state_dict(checkpoint['model_state_dict_0'])
print("Finished constructing ancestral sample ...................")
e_pos_list = []
for data_corrupt, data, label_gt in tqdm(data_loader):
data = data.permute(0, 3, 1, 2).contiguous().cuda()
energy = model.forward(data, None)
energy = -FLAGS.temperature * energy.squeeze().detach().cpu().numpy()
e_pos_list.extend(list(energy))
print(len(e_pos_list))
print("Positive sample probability ", np.mean(e_pos_list),
np.std(e_pos_list))
# alr = 0.0065
alr = 10.0
#
for i in range(1):
tot_weight = 0
for j in tqdm(range(1, FLAGS.pdist + 1)):
if j == 1:
x_curr = torch.rand(FLAGS.batch_size, 3, 32, 32).cuda()
alpha_prev = (j - 1) / FLAGS.pdist
alpha_new = j / FLAGS.pdist
cweight, x_curr = ancestral_sample(model,
x_curr,
alpha_prev,
alpha_new,
FLAGS,
FLAGS.batch_size,
FLAGS.pdist,
temp=FLAGS.temperature,
approx_lr=alr)
tot_weight = tot_weight + cweight.detach()
x_curr = x_curr.detach()
tot_weight = tot_weight.detach().cpu().float().numpy()
print("Total values of lower value based off forward sampling",
np.mean(tot_weight), np.std(tot_weight))
tot_weight = 0
x_curr = x_curr.detach()
for j in tqdm(range(FLAGS.pdist, 0, -1)):
alpha_new = (j - 1) / FLAGS.pdist
alpha_prev = j / FLAGS.pdist
cweight, x_curr = ancestral_sample(model,
x_curr,
alpha_prev,
alpha_new,
FLAGS,
FLAGS.batch_size,
FLAGS.pdist,
temp=FLAGS.temperature,
approx_lr=alr)
tot_weight = tot_weight - cweight.detach()
x_curr = x_curr.detach()
tot_weight = tot_weight.detach().cpu().float().numpy()
print("Total values of upper value based off backward sampling",
np.mean(tot_weight), np.std(tot_weight))
def main_single(gpu, FLAGS):
if FLAGS.slurm:
init_distributed_mode(FLAGS)
os.environ['MASTER_ADDR'] = FLAGS.master_addr
os.environ['MASTER_PORT'] = FLAGS.port
rank_idx = FLAGS.node_rank * FLAGS.gpus + gpu
world_size = FLAGS.nodes * FLAGS.gpus
print("Values of args: ", FLAGS)
if world_size > 1:
if FLAGS.slurm:
dist.init_process_group(backend='nccl', init_method='env://', world_size=world_size, rank=rank_idx)
else:
dist.init_process_group(backend='nccl', init_method='tcp://localhost:1700', world_size=world_size, rank=rank_idx)
if FLAGS.dataset == "cifar10":
train_dataset = Cifar10(FLAGS)
valid_dataset = Cifar10(FLAGS, train=False, augment=False)
test_dataset = Cifar10(FLAGS, train=False, augment=False)
elif FLAGS.dataset == "stl":
train_dataset = STLDataset(FLAGS)
valid_dataset = STLDataset(FLAGS, train=False)
test_dataset = STLDataset(FLAGS, train=False)
elif FLAGS.dataset == "object":
train_dataset = ObjectDataset(FLAGS.cond_idx)
valid_dataset = ObjectDataset(FLAGS.cond_idx)
test_dataset = ObjectDataset(FLAGS.cond_idx)
elif FLAGS.dataset == "imagenet":
train_dataset = ImageNet()
valid_dataset = ImageNet()
test_dataset = ImageNet()
elif FLAGS.dataset == "mnist":
train_dataset = Mnist(train=True)
valid_dataset = Mnist(train=False)
test_dataset = Mnist(train=False)
elif FLAGS.dataset == "celeba":
train_dataset = CelebAHQ(cond_idx=FLAGS.cond_idx)
valid_dataset = CelebAHQ(cond_idx=FLAGS.cond_idx)
test_dataset = CelebAHQ(cond_idx=FLAGS.cond_idx)
elif FLAGS.dataset == "lsun":
train_dataset = LSUNBed(cond_idx=FLAGS.cond_idx)
valid_dataset = LSUNBed(cond_idx=FLAGS.cond_idx)
test_dataset = LSUNBed(cond_idx=FLAGS.cond_idx)
else:
assert False
train_dataloader = DataLoader(train_dataset, num_workers=FLAGS.data_workers, batch_size=FLAGS.batch_size, shuffle=True, drop_last=True)
valid_dataloader = DataLoader(valid_dataset, num_workers=FLAGS.data_workers, batch_size=FLAGS.batch_size, shuffle=True, drop_last=True)
test_dataloader = DataLoader(test_dataset, num_workers=FLAGS.data_workers, batch_size=FLAGS.batch_size, shuffle=True, drop_last=True)
FLAGS_OLD = FLAGS
logdir = osp.join(FLAGS.logdir, FLAGS.exp)
best_inception = 0.0
if FLAGS.resume_iter != 0:
model_path = osp.join(logdir, "model_{}.pth".format(FLAGS.resume_iter))
checkpoint = torch.load(model_path)
best_inception = checkpoint['best_inception']
FLAGS = checkpoint['FLAGS']
FLAGS.resume_iter = FLAGS_OLD.resume_iter
FLAGS.nodes = FLAGS_OLD.nodes
FLAGS.gpus = FLAGS_OLD.gpus
FLAGS.node_rank = FLAGS_OLD.node_rank
FLAGS.master_addr = FLAGS_OLD.master_addr
FLAGS.train = FLAGS_OLD.train
FLAGS.num_steps = FLAGS_OLD.num_steps
FLAGS.step_lr = FLAGS_OLD.step_lr
FLAGS.batch_size = FLAGS_OLD.batch_size
FLAGS.ensembles = FLAGS_OLD.ensembles
FLAGS.kl_coeff = FLAGS_OLD.kl_coeff
FLAGS.repel_im = FLAGS_OLD.repel_im
FLAGS.save_interval = FLAGS_OLD.save_interval
for key in dir(FLAGS):
if "__" not in key:
FLAGS_OLD[key] = getattr(FLAGS, key)
FLAGS = FLAGS_OLD
if FLAGS.dataset == "cifar10":
model_fn = ResNetModel
elif FLAGS.dataset == "stl":
model_fn = ResNetModel
elif FLAGS.dataset == "object":
model_fn = CelebAModel
elif FLAGS.dataset == "mnist":
model_fn = MNISTModel
elif FLAGS.dataset == "celeba":
model_fn = CelebAModel
elif FLAGS.dataset == "lsun":
model_fn = CelebAModel
elif FLAGS.dataset == "imagenet":
model_fn = ImagenetModel
else:
assert False
models = [model_fn(FLAGS).train() for i in range(FLAGS.ensembles)]
models_ema = [model_fn(FLAGS).train() for i in range(FLAGS.ensembles)]
torch.cuda.set_device(gpu)
if FLAGS.cuda:
models = [model.cuda(gpu) for model in models]
model_ema = [model_ema.cuda(gpu) for model_ema in models_ema]
if FLAGS.gpus > 1:
sync_model(models)
parameters = []
for model in models:
parameters.extend(list(model.parameters()))
optimizer = Adam(parameters, lr=FLAGS.lr, betas=(0.0, 0.9), eps=1e-8)
ema_model(models, models_ema, mu=0.0)
logger = TensorBoardOutputFormat(logdir)
it = FLAGS.resume_iter
if not osp.exists(logdir):
os.makedirs(logdir)
checkpoint = None
if FLAGS.resume_iter != 0:
model_path = osp.join(logdir, "model_{}.pth".format(FLAGS.resume_iter))
checkpoint = torch.load(model_path)
optimizer.load_state_dict(checkpoint['optimizer_state_dict'])
for i, (model, model_ema) in enumerate(zip(models, models_ema)):
model.load_state_dict(checkpoint['model_state_dict_{}'.format(i)])
model_ema.load_state_dict(checkpoint['ema_model_state_dict_{}'.format(i)])
print("New Values of args: ", FLAGS)
pytorch_total_params = sum([p.numel() for p in model.parameters() if p.requires_grad])
print("Number of parameters for models", pytorch_total_params)
train(models, models_ema, optimizer, logger, train_dataloader, FLAGS.resume_iter, logdir, FLAGS, gpu, best_inception)
def main():
parser = argparse.ArgumentParser()
parser.add_argument("--policy-lr", type=float, default=5e-4, help="learning rate")
parser.add_argument("--num-gpu-core", type=int, default=1, help="Number of GPU cores to use")
parser.add_argument("--num-cpu-core", type=int, default=4, help="Number of CPU cores to use")
parser.add_argument("--inter-op-parallelism-threads", type=int, default=4,
help="0 means the system picks an appropriate number.")
parser.add_argument("--intra-op-parallelism-threads", type=int, default=4,
help="0 means the system picks an appropriate number.")
parser.add_argument("--use-fp16", default=False, action='store_true', help="whether use float16 as default")
args = parser.parse_args()
print("Available devices:")
print(device_lib.list_local_devices())
config_dict = load_cfg_from_yaml('config/CIFAR10/R_50.yaml')
config_dict = merge_cfg_from_args(config_dict, args)
lr = config_dict["policy_lr"]
intra_op_threads = config_dict['intra_op_parallelism_threads']
inter_op_threads = config_dict['inter_op_parallelism_threads']
use_fp16 = config_dict['use_fp16']
cpu_num = config_dict["num_cpu_core"]
gpu_num = config_dict["num_gpu_core"]
MAX_EPOCH = config_dict['TRAIN']['MAX_EPOCH']
device_id = -1
config = tf.ConfigProto(
# device_count limits the number of CPUs being used, not the number of cores or threads.
device_count={'CPU': cpu_num, 'GPU': gpu_num},
inter_op_parallelism_threads=cpu_num, # parallel without each operation, i.e., reduce_sum
intra_op_parallelism_threads=cpu_num, # parallel between multiple operations
log_device_placement=True, # log the GPU or CPU device that is assigned to an operation
allow_soft_placement=True, # use soft constraints for the device placement
)
config.gpu_options.allow_growth = True
config.gpu_options.per_process_gpu_memory_fraction = 0.9
with tf.Session(config=config) as sess:
# input for resnet
tf_x = tf.placeholder(dtype=data_type(use_fp16), shape=[None, 32, 32, 3], name='tf_x')
tf_y = tf.placeholder(dtype=data_type(use_fp16), shape=[None, 10], name='tf_y')
# output of resnet
with slim.arg_scope(resnet_v2.resnet_arg_scope()):
with tf.device(next_device(device_id, config_dict, use_cpu=False)):
resnet_out, end_points = resnet_v2.resnet_v2_50(tf_x, num_classes=10, is_training=False)
# loss
cross_entropy_loss = tf.reduce_mean(tf.nn.softmax_cross_entropy_with_logits_v2(logits=resnet_out, labels=tf_y))
# tf_loss_summary = tf.summary.scalar('loss', cross_entropy_loss)
# optimizer
tf_lr = tf.placeholder(dtype=data_type(use_fp16), shape=None, name='learning_rate') # more flexible learning rate
optimizer = tf.train.AdamOptimizer(tf_lr)
grads_and_vars = optimizer.compute_gradients(cross_entropy_loss)
train_step = optimizer.minimize(cross_entropy_loss)
correct_prediction = tf.equal(tf.argmax(resnet_out, 1), tf.argmax(tf_y, 1))
accuracy = tf.reduce_mean(tf.cast(correct_prediction, "float"))
# tf_accuracy_summary = tf.summary.scalar('accuracy', accuracy)
# initialize variables
sess.run(tf.global_variables_initializer())
# Name scope allows you to group various summaries together
# Summaries having the same name_scope will be displayed on the same row
with tf.name_scope('performance'):
# Summaries need to be displayed
# Whenever you need to record the loss, feed the mean loss to this placeholder
tf_loss_ph = tf.placeholder(dtype=data_type(use_fp16), shape=None, name='loss_summary')
# Create a scalar summary object for the loss so it can be displayed
tf_loss_summary = tf.summary.scalar('loss', tf_loss_ph)
# Whenever you need to record the loss, feed the mean test accuracy to this placeholder
tf_accuracy_ph = tf.placeholder(dtype=data_type(use_fp16), shape=None, name='accuracy_summary')
# Create a scalar summary object for the accuracy so it can be displayed
tf_accuracy_summary = tf.summary.scalar('accuracy', tf_accuracy_ph)
# Gradient norm summary
# tf_gradnorm_summary: this calculates the l2 norm of the gradients of the last layer
# of your neural network. Gradient norm is a good indicator of whether the weights of
# the neural network are being properly updated. A too small gradient norm can indicate
# vanishing gradient or a too large gradient can imply exploding gradient phenomenon.
t_layer = len(grads_and_vars) - 2 # index of the last layer
for i_layer, (g, v) in enumerate(grads_and_vars):
if i_layer == t_layer:
with tf.name_scope('gradients_norm'):
tf_last_grad_norm = tf.sqrt(tf.reduce_mean(g ** 2))
tf_gradnorm_summary = tf.summary.scalar('grad_norm', tf_last_grad_norm)
break
# A summary for each weight in each layer of ResNet50
all_summaries = []
for weight_name in end_points:
try:
name_scope = weight_name.split("bottleneck_v2/")[0] + weight_name.split("bottleneck_v2/")[1]
except:
name_scope = weight_name.split("bottleneck_v2/")[0]
with tf.name_scope(name_scope):
weight = end_points[weight_name]
# Create a scalar summary object for the loss so it can be displayed
tf_w_hist = tf.summary.histogram('weights_hist', tf.reshape(weight, [-1]))
all_summaries.append([tf_w_hist])
# Merge all parameter histogram summaries together
tf_weight_summaries = tf.summary.merge(all_summaries)
# Merge all summaries together
# the following two statements are equal
# [1] merge_op = tf.summary.merge_all()
# [2] merge_op = tf.summary.merge([tf_loss_summary, tf_accuracy_summary, tf_gradnorm_summary, ...])
merge_op = tf.summary.merge([tf_loss_summary, tf_accuracy_summary])
# separate tensorboard, i.e., one log file, one folder.
train_writer = tf.summary.FileWriter('logs/train', sess.graph)
test_writer = tf.summary.FileWriter('logs/test', sess.graph)
# get cifar10 dataset
cifar10_data = Cifar10('dataset/CIFAR10/', config=config_dict)
test_images, test_labels = cifar10_data.test_data()
# training
start_time = time.time()
batch_counter = 0
while cifar10_data.epochs_completed < MAX_EPOCH:
batch_xs, batch_ys = cifar10_data.next_train_batch()
batch_counter += 1
sess.run(train_step, feed_dict={tf_x: batch_xs, tf_y: batch_ys, tf_lr: lr})
# calculate the train_accuracy for one batch
if batch_counter % 100 == 0:
train_accuracy, loss = sess.run(
[accuracy, cross_entropy_loss], feed_dict={tf_x: batch_xs, tf_y: batch_ys, tf_lr: lr})
train_summary = sess.run(
merge_op, feed_dict={tf_loss_ph: loss, tf_accuracy_ph: train_accuracy})
train_writer.add_summary(train_summary, batch_counter)
print("----- epoch {} batch {} training accuracy {} loss {}".
format(cifar10_data.epochs_completed, batch_counter, train_accuracy, loss))
end_time = time.time()
print("time: {}".format(end_time - start_time))
start_time = end_time
# calculate the gradient norm summary and weight histogram
if batch_counter % 100 == 0:
gn_summary, wb_summary = sess.run(
[tf_gradnorm_summary, tf_weight_summaries], feed_dict={tf_x: batch_xs, tf_y: batch_ys, tf_lr: lr})
train_writer.add_summary(gn_summary, batch_counter)
train_writer.add_summary(wb_summary, batch_counter)
# calculate the test_accuracy
if batch_counter % 1000 == 0:
# Test_accuracy
test_accuracy, test_loss = sess.run(
[accuracy, cross_entropy_loss], feed_dict={tf_x: test_images, tf_y: test_labels, tf_lr: lr})
test_summary = sess.run(
merge_op, feed_dict={tf_loss_ph: test_loss, tf_accuracy_ph: test_accuracy})
test_writer.add_summary(test_summary, batch_counter)
print("----- test accuracy {} test loss {}".format(test_accuracy, test_loss))
# Overall test accuracy
overall_accuracy = accuracy.eval(feed_dict={tf_x: test_images, tf_y: test_labels, tf_lr: lr})
print("\nOverall test accuracy {}".format(overall_accuracy))
save_cfg_to_yaml(config_dict, 'logs/current_config.yaml')
def compute_inception(model):
size = FLAGS.im_number
num_steps = size // 1000
images = []
test_ims = []
if FLAGS.dataset == "cifar10":
test_dataset = Cifar10(FLAGS)
elif FLAGS.dataset == "celeba":
test_dataset = CelebAHQ()
elif FLAGS.dataset == "mnist":
test_dataset = Mnist(train=True)
test_dataloader = DataLoader(test_dataset,
batch_size=FLAGS.batch_size,
num_workers=4,
shuffle=True,
drop_last=False)
if FLAGS.dataset == "cifar10":
for data_corrupt, data, label_gt in tqdm(test_dataloader):
data = data.numpy()
test_ims.extend(list(rescale_im(data)))
if len(test_ims) > 10000:
break
elif FLAGS.dataset == "mnist":
for data_corrupt, data, label_gt in tqdm(test_dataloader):
data = data.numpy()
test_ims.extend(list(np.tile(rescale_im(data), (1, 1, 3))))
if len(test_ims) > 10000:
break
test_ims = test_ims[:10000]
classes = 10
print(FLAGS.batch_size)
data_buffer = None
for j in range(num_steps):
itr = int(1000 / 500 * FLAGS.repeat_scale)
if data_buffer is None:
data_buffer = InceptionReplayBuffer(1000)
curr_index = 0
identity = np.eye(classes)
if FLAGS.dataset == "celeba":
n = 128
c = 3
elif FLAGS.dataset == "mnist":
n = 28
c = 1
else:
n = 32
c = 3
for i in tqdm(range(itr)):
noise_scale = [1]
if len(data_buffer) < 1000:
x_init = np.random.uniform(0, 1, (FLAGS.batch_size, c, n, n))
label = np.random.randint(0, classes, (FLAGS.batch_size))
x_init = torch.Tensor(x_init).cuda()
label = identity[label]
label = torch.Tensor(label).cuda()
x_new, _ = gen_image(label, FLAGS, model, x_init,
FLAGS.num_steps)
x_new = x_new.detach().cpu().numpy()
label = label.detach().cpu().numpy()
data_buffer.add(x_new, label)
else:
if i < itr - FLAGS.nomix:
(x_init, label), idx = data_buffer.sample(
FLAGS.batch_size, transform=FLAGS.transform)
else:
if FLAGS.dataset == "celeba":
n = 20
else:
n = 2
ix = i % n
# for i in range(n):
start_idx = (1000 // n) * ix
end_idx = (1000 // n) * (ix + 1)
(x_init, label) = data_buffer._encode_sample(
list(range(start_idx, end_idx)), transform=False)
idx = list(range(start_idx, end_idx))
x_init = torch.Tensor(x_init).cuda()
label = torch.Tensor(label).cuda()
x_new, energy = gen_image(label, FLAGS, model, x_init,
FLAGS.num_steps)
energy = energy.cpu().detach().numpy()
x_new = x_new.cpu().detach().numpy()
label = label.cpu().detach().numpy()
data_buffer.set_elms(idx, x_new, label)
if FLAGS.im_number != 50000:
print(np.mean(energy), np.std(energy))
curr_index += 1
ims = np.array(data_buffer._storage[:1000])
ims = rescale_im(ims).transpose((0, 2, 3, 1))
if FLAGS.dataset == "mnist":
ims = np.tile(ims, (1, 1, 1, 3))
images.extend(list(ims))
random.shuffle(images)
saveim = osp.join('sandbox_cachedir', FLAGS.exp,
"test{}.png".format(FLAGS.idx))
if FLAGS.dataset == "cifar10":
rix = np.random.permutation(1000)[:100]
ims = ims[rix]
im_panel = ims.reshape((10, 10, 32, 32, 3)).transpose(
(0, 2, 1, 3, 4)).reshape((320, 320, 3))
imsave(saveim, im_panel)
print("Saved image!!!!")
splits = max(1, len(images) // 5000)
score, std = get_inception_score(images, splits=splits)
print("Inception score of {} with std of {}".format(score, std))
# FID score
n = min(len(images), len(test_ims))
fid = get_fid_score(images, test_ims)
print("FID of score {}".format(fid))
elif FLAGS.dataset == "mnist":
# ims = ims[:100]
# im_panel = ims.reshape((10, 10, 32, 32, 3)).transpose((0, 2, 1, 3, 4)).reshape((320, 320, 3))
# imsave(saveim, im_panel)
ims = ims[:100]
im_panel = ims.reshape((10, 10, 28, 28, 3)).transpose(
(0, 2, 1, 3, 4)).reshape((280, 280, 3))
imsave(saveim, im_panel)
print("Saved image!!!!")
splits = max(1, len(images) // 5000)
# score, std = get_inception_score(images, splits=splits)
# print("Inception score of {} with std of {}".format(score, std))
# FID score
n = min(len(images), len(test_ims))
fid = get_fid_score(images, test_ims)
print("FID of score {}".format(fid))
elif FLAGS.dataset == "celeba":
ims = ims[:25]
im_panel = ims.reshape((5, 5, 128, 128, 3)).transpose(
(0, 2, 1, 3, 4)).reshape((5 * 128, 5 * 128, 3))
imsave(saveim, im_panel)
