def run_training(log_file):
# load the data
print(150 * '*')
with open("./mnist.pkl", "rb") as fid:
dataset = pickle.load(fid, encoding='latin1')
train_x, train_y = dataset[0]
test_x, test_y = dataset[1]
train_num = train_x.shape[0]
test_num = test_x.shape[0]
# label_index: list of list
# ex) label_index[3] conatins every indicies of 3 data
num_classes = FLAGS.num_classes
label_index = [[] for i in range(num_classes)]
for i in range(len(train_y)):
label_index[train_y[i]].append(i)
# construct the computation graph
images = tf.placeholder(tf.float32, shape=[None, 1, 28, 28])
labels = tf.placeholder(tf.int32, shape=[None])
lr = tf.placeholder(tf.float32)
features, _ = mnist_net(images)
centers = func.construct_center(features, FLAGS.num_classes)
loss = func.dce_loss(features, labels, centers, FLAGS.temp)
eval_correct = func.evaluation(features, labels, centers)
find_wrong = func.find_wrong(features, labels, centers)
train_op = func.training(loss, lr)
# counts = tf.get_variable('counts', [FLAGS.num_classes], dtype=tf.int32,
# initializer=tf.constant_initializer(0), trainable=False)
# add_op, count_op, average_op = net.init_centers(features, labels, centers, counts)
init = tf.global_variables_initializer()
# init the variables
sess = tf.Session()
sess.run(init)
#compute_centers(sess, add_op, count_op, average_op, images, labels, train_x, train_y)
# run the computation graph (training and test)
epoch = 1
loss_before = np.inf
score_before = 0.0
stopping = 0
index = list(range(train_num))
np.random.shuffle(index)
batch_size = FLAGS.batch_size
batch_num = train_num // batch_size if train_num % batch_size == 0 else train_num // batch_size + 1
#saver = tf.train.Saver(max_to_keep=1)
ratio = FLAGS.ratio
iter = 0
step = 0
log_loss = 0
log_acc = 0
# pdb.set_trace()
# train the framework with the training data
while stopping < FLAGS.stop:
time1 = time.time()
loss_now = 0.0
score_now = 0.0
iter += 1
if iter % 100 == 0:
print("iter : {}".format(iter))
wrong_list = np.zeros(num_classes)
for i in range(batch_num):
# selecting probability
class_prob = ratio * wrong_list / batch_size + (
1 - ratio * sum(wrong_list) / batch_size) / 10
input_num_list = [
math.ceil(batch_size * class_prob[j])
for j in range(num_classes)
]
batch_indicies = []
for k in range(num_classes):
rand_smpl = [
label_index[k][j] for j in sorted(
random.sample(range(len(label_index[k])),
input_num_list[k]))
]
batch_indicies += rand_smpl
np.random.shuffle(batch_indicies)
# pdb.set_trace()
batch_x = train_x[batch_indicies[:batch_size]]
batch_y = train_y[batch_indicies[:batch_size]]
# JG
batch_x_reshp = np.reshape(batch_x, (batch_size, 1, 28, 28))
# batch_x.shape : (50, 784)
# images : <tf.Tensor 'Placeholder:0' shape=(?, 1, 28, 28) dtype=float32>
##result = sess.run([train_op, loss, eval_correct], feed_dict={images:batch_x,
## labels:batch_y, lr:FLAGS.learning_rate})
result = sess.run([train_op, loss, eval_correct, find_wrong],
feed_dict={
images: batch_x_reshp,
labels: batch_y,
lr: FLAGS.learning_rate
})
loss_now += result[1]
score_now += result[2]
wrong_list = result[3]
log_loss += result[1]
log_acc += result[2]
if (step % FLAGS.log_period == 0) and (step != 0):
log_file.write('{}, loss, {:.3f}, acc, {:.3f}\n'.format(
step, log_loss / FLAGS.log_period,
log_acc / batch_size / FLAGS.log_period * 100))
log_loss = 0
log_acc = 0
step += 1
score_now /= train_num
print('epoch {}: training: loss --> {:.3f}, acc --> {:.3f}%'.format(
epoch, loss_now, score_now * 100))
if loss_now > loss_before or score_now < score_before:
stopping += 1
FLAGS.learning_rate *= FLAGS.decay
print("\033[1;31;40mdecay learning rate {}th time!\033[0m".format(
stopping))
loss_before = loss_now
score_before = score_now
#checkpoint_file = os.path.join(FLAGS.log_dir, 'model.ckpt')
#saver.save(sess, checkpoint_file, global_step=epoch)
epoch += 1
np.random.shuffle(index)
time2 = time.time()
print('time for this epoch: {:.3f} minutes'.format(
(time2 - time1) / 60.0))
# pdb.set_trace()
# test the framework with the test data
test_score = do_eval(sess, eval_correct, images, labels, test_x, test_y)
print('accuracy on the test dataset: {:.3f}%'.format(test_score * 100))
# test the framework with the test data
test_score = do_eval(sess, eval_correct, images, labels, test_x, test_y)
sess.close()
def run_training():
# load the data
print (150*'*')
#with open("mnist.data", "rb") as fid:
with open("/home/ubuntu/codes/Convolutional-Prototype-Learning/mnist.pkl", "rb") as fid:
dataset = pickle.load(fid, encoding='latin1')
train_x, train_y = dataset[0]
test_x, test_y = dataset[1]
train_num = train_x.shape[0]
test_num = test_x.shape[0]
# construct the computation graph
images = tf.placeholder(tf.float32, shape=[None,1,28,28])
labels = tf.placeholder(tf.int32, shape=[None])
lr= tf.placeholder(tf.float32)
features, _ = mnist_net(images)
centers = func.construct_center(features, FLAGS.num_classes)
loss1 = func.dce_loss(features, labels, centers, FLAGS.temp)
loss2 = func.pl_loss(features, labels, centers)
loss = loss1 + FLAGS.weight_pl * loss2
eval_correct = func.evaluation(features, labels, centers)
train_op = func.training(loss, lr)
#counts = tf.get_variable('counts', [FLAGS.num_classes], dtype=tf.int32,
# initializer=tf.constant_initializer(0), trainable=False)
#add_op, count_op, average_op = net.init_centers(features, labels, centers, counts)
init = tf.global_variables_initializer()
# initialize the variables
sess = tf.Session()
sess.run(init)
#compute_centers(sess, add_op, count_op, average_op, images, labels, train_x, train_y)
# run the computation graph (train and test process)
epoch = 1
loss_before = np.inf
score_before = 0.0
stopping = 0
index = list(range(train_num))
np.random.shuffle(index)
batch_size = FLAGS.batch_size
batch_num = train_num//batch_size if train_num % batch_size==0 else train_num//batch_size+1
#saver = tf.train.Saver(max_to_keep=1)
# train the framework with the training data
while stopping<FLAGS.stop:
time1 = time.time()
loss_now = 0.0
score_now = 0.0
for i in range(batch_num):
batch_x = train_x[index[i*batch_size:(i+1)*batch_size]]
batch_y = train_y[index[i*batch_size:(i+1)*batch_size]]
batch_x_reshp = np.reshape(batch_x, (batch_size, 1, 28, 28))
result = sess.run([train_op, loss, eval_correct], feed_dict={images:batch_x_reshp,
labels:batch_y, lr:FLAGS.learning_rate})
loss_now += result[1]
score_now += result[2]
score_now /= train_num
print ('epoch {}: training: loss --> {:.3f}, acc --> {:.3f}%'.format(epoch, loss_now, score_now*100))
#print sess.run(centers)
if loss_now > loss_before or score_now < score_before:
stopping += 1
FLAGS.learning_rate *= FLAGS.decay
print ("\033[1;31;40mdecay learning rate {}th time!\033[0m".format(stopping))
loss_before = loss_now
score_before = score_now
#checkpoint_file = os.path.join(FLAGS.log_dir, 'model.ckpt')
#saver.save(sess, checkpoint_file, global_step=epoch)
epoch += 1
np.random.shuffle(index)
time2 = time.time()
print ('time for this epoch: {:.3f} minutes'.format((time2-time1)/60.0))
pdb.set_trace()
# test the framework with the test data
test_score = do_eval(sess, eval_correct, images, labels, test_x, test_y)
print ('accuracy on the test dataset: {:.3f}%'.format(test_score*100))
sess.close()
def run_training():
# load the data
print(150 * '*')
train_x = mnist.train.images
train_y = mnist.train.labels
train_y = np.argmax(train_y, axis=1)
test_x = mnist.test.images
test_y = mnist.test.labels
test_y = np.argmax(test_y, axis=1)
# train_x, train_y = dataset[0]
# test_x, test_y = dataset[1]
# train_x = [np.reshape(x, (784, 1)) for x in train_x]
# train_y = [vectorized_label(x) for x in train_y]
train_num = train_x.shape[0]
# test_num = test_x.shape[0]
print("train:" + str(train_x.shape) + "label:" + str(train_y.shape))
# construct the computation graph
images = tf.placeholder(tf.float32, shape=[None, 784])
labels = tf.placeholder(tf.int32, shape=[None])
lr = tf.placeholder(tf.float32)
features, _ = mnist_net(images)
centers = func.construct_center(features, FLAGS.num_classes)
loss1 = func.dce_loss(features, labels, centers, FLAGS.temp)
loss2 = func.pl_loss(features, labels, centers)
loss = loss1 + FLAGS.weight_pl * loss2
eval_correct = func.evaluation(features, labels, centers)
train_op = func.training(loss, lr)
#counts = tf.get_variable('counts', [FLAGS.num_classes], dtype=tf.int32,
# initializer=tf.constant_initializer(0), trainable=False)
#add_op, count_op, average_op = net.init_centers(features, labels, centers, counts)
init = tf.global_variables_initializer()
# initialize the variables
sess = tf.Session()
sess.run(init)
#compute_centers(sess, add_op, count_op, average_op, images, labels, train_x, train_y)
# run the computation graph (train and test process)
epoch = 1
loss_before = np.inf
score_before = 0.0
stopping = 0
index = list(range(train_num))
np.random.shuffle(index)
batch_size = FLAGS.batch_size
# print("batch size",batch_size)
batch_num = train_num // batch_size if train_num % batch_size == 0 else train_num // batch_size + 1
#saver = tf.train.Saver(max_to_keep=1)
# train the framework with the training data
while stopping < FLAGS.stop:
time1 = time.time()
loss_now = 0.0
score_now = 0.0
print("centers:", sess.run(centers))
for i in range(batch_num):
batch_x = train_x[index[i * batch_size:(i + 1) * batch_size]]
batch_y = train_y[index[i * batch_size:(i + 1) * batch_size]]
# print("train images:",batch_x.shape,"label:",batch_y.shape)
result = sess.run([train_op, loss, eval_correct],
feed_dict={
images: batch_x,
labels: batch_y,
lr: FLAGS.learning_rate
})
loss_now += result[1]
score_now += result[2]
score_now /= train_num
print('epoch {}: training: loss --> {:.3f}, acc --> {:.3f}%'.format(
epoch, loss_now, score_now * 100))
#print sess.run(centers)
if loss_now > loss_before or score_now < score_before:
stopping += 1
FLAGS.learning_rate *= FLAGS.decay
print("\033[1;31;40mdecay learning rate {}th time!\033[0m".format(
stopping))
loss_before = loss_now
score_before = score_now
#checkpoint_file = os.path.join(FLAGS.log_dir, 'model.ckpt')
#saver.save(sess, checkpoint_file, global_step=epoch)
epoch += 1
np.random.shuffle(index)
time2 = time.time()
print('time for this epoch: {:.3f} minutes'.format(
(time2 - time1) / 60.0))
# test the framework with the test data
test_score = do_eval(sess, eval_correct, images, labels, test_x,
test_y)
print('测试集准确率 {:.10f}%'.format(test_score * 100))
sess.close()
def run_training():
# load the data
print (150*'*')
#with open("mnist.data", "rb") as fid:
with open("/home/ubuntu/datasets/mnist.pkl", "rb") as fid:
dataset = pickle.load(fid, encoding='latin1')
train_x, train_y = dataset[0]
test_x, test_y = dataset[1]
train_num = train_x.shape[0]
test_num = test_x.shape[0]
# construct the computation graph
images = tf.placeholder(tf.float32, shape=[None,1,28,28])
labels = tf.placeholder(tf.int32, shape=[None])
lr= tf.placeholder(tf.float32)
features, _ = mnist_net(images)
centers = func.construct_center(features, FLAGS.num_classes)
loss1 = func.dce_loss(features, labels, centers, FLAGS.temp)
loss2 = func.pl_loss(features, labels, centers)
loss = loss1 + FLAGS.weight_pl * loss2
eval_correct = func.evaluation(features, labels, centers)
train_op = func.training(loss, lr)
#counts = tf.get_variable('counts', [FLAGS.num_classes], dtype=tf.int32,
# initializer=tf.constant_initializer(0), trainable=False)
#add_op, count_op, average_op = net.init_centers(features, labels, centers, counts)
sess = tf.Session()
load_saver = tf.train.Saver()
os.makedirs(FLAGS.log_dir, exist_ok=True)
file_list = os.listdir(FLAGS.log_dir)
keep_last_int = 0
last_load_file_name = ''
for name in file_list:
if len(name.split('.')) < 2:
continue
if keep_last_int < int(name.split('.')[1].split('-')[1]):
keep_last_int = int(name.split('.')[1].split('-')[1])
last_load_file_name = '.'.join(name.split('.')[:2])
load_file = os.path.join(FLAGS.log_dir, last_load_file_name)
if os.path.isfile(load_file+".meta"):
load_saver.restore(sess, load_file)
else:
init = tf.global_variables_initializer()
# initialize the variables
sess = tf.Session()
sess.run(init)
#compute_centers(sess, add_op, count_op, average_op, images, labels, train_x, train_y)
# run the computation graph (train and test process)
epoch = 1
loss_before = np.inf
score_before = 0.0
stopping = 0
index = list(range(train_num))
np.random.shuffle(index)
batch_size = FLAGS.batch_size
batch_num = train_num//batch_size if train_num % batch_size==0 else train_num//batch_size+1
saver = tf.train.Saver(max_to_keep=1)
# train the framework with the training data
while stopping<FLAGS.stop:
time1 = time.time()
loss_now = 0.0
score_now = 0.0
for i in range(batch_num):
batch_x = train_x[index[i*batch_size:(i+1)*batch_size]]
batch_y = train_y[index[i*batch_size:(i+1)*batch_size]]
batch_x_reshp = np.reshape(batch_x, (batch_size, 1, 28, 28))
result = sess.run([train_op, loss, eval_correct], feed_dict={images:batch_x_reshp,
labels:batch_y, lr:FLAGS.learning_rate})
# features_eval = sess.run([features], feed_dict={images:batch_x_reshp,
# labels:batch_y, lr:FLAGS.learning_rate})
# features_eval.shape (1, 50, 2)
loss_now += result[1]
score_now += result[2]
score_now /= train_num
print ('epoch {}: training: loss --> {:.3f}, acc --> {:.3f}%'.format(epoch, loss_now, score_now*100))
print (sess.run(centers))
if loss_now > loss_before or score_now < score_before:
stopping += 1
FLAGS.learning_rate *= FLAGS.decay
print ("\033[1;31;40mdecay learning rate {}th time!\033[0m".format(stopping))
loss_before = loss_now
score_before = score_now
checkpoint_file = os.path.join(FLAGS.log_dir, 'model.ckpt')
saver.save(sess, checkpoint_file, global_step=epoch)
epoch += 1
np.random.shuffle(index)
time2 = time.time()
print ('time for this epoch: {:.3f} minutes'.format((time2-time1)/60.0))
break # For testing only the first episode
#pdb.set_trace()
# test the framework with the test data
test_score, eval_dots_perclass = do_eval(sess, eval_correct, images, labels, test_x, test_y, features)
compute_overlap(eval_dots_perclass)
# eval_dots_perclass
# len(eval_dots_perclass) : 10 [num_categories=10]
# eval_dots_perclass[0] : dots of category 0
# eval_dots_perclass[0][0] : (x, y) of index 0 of category 0
print ('accuracy on the test dataset: {:.3f}%'.format(test_score*100))
# pdb.set_trace()
sess.close()
def run_training():
# load the data
print (150*'*')
HU2012 = sio.loadmat('./data/HU2012/2012_Houston.mat')
data_IN = HU2012['spectraldata']
gt_IN = HU2012['gt_2012']
print (data_IN.shape)
data = data_IN.reshape(np.prod(data_IN.shape[:2]),np.prod(data_IN.shape[2:]))
gt = gt_IN.reshape(np.prod(gt_IN.shape[:2]),)
trainingIndexf = './data/Houston2012trainingIndex.mat'
train_indices = sio.loadmat(trainingIndexf)['trainingIndex']
train_indices_rows = sio.loadmat(trainingIndexf)['trainingIndex_rows']
train_indices_cols = sio.loadmat(trainingIndexf)['trainingIndex_cols']
testingIndexf = './data/Houston2012testingIndex.mat'
test_indices = sio.loadmat(testingIndexf)['testingIndex']
test_indices_rows = sio.loadmat(testingIndexf)['testingIndex_rows']
test_indices_cols = sio.loadmat(testingIndexf)['testingIndex_cols']
train_indices = np.squeeze(train_indices-1)
test_indices = np.squeeze(test_indices-1)
height, width = gt_IN.shape
Y=gt_IN.T
Y = Y.reshape(height*width,)
train_y = Y[train_indices]-1
test_y = Y[test_indices] - 1
classes_num = np.max(gt)
data = preprocessing.scale(data)
whole_data = data.reshape(data_IN.shape[0], data_IN.shape[1], data_IN.shape[2])
whole_data, pca = applyPCA(whole_data, numComponents = FLAGS.numComponents)
img_channels = whole_data.shape[2]
PATCH_LENGTH = int((FLAGS.window_size-1)/2)
padded_data = zeroPadding.zeroPadding_3D(whole_data, PATCH_LENGTH)
train_data = np.zeros((train_indices.shape[0], FLAGS.window_size, FLAGS.window_size, img_channels))
test_data = np.zeros((test_indices.shape[0], FLAGS.window_size, FLAGS.window_size, img_channels))
train_assign = indexToAssignment(np.squeeze(train_indices_rows-1), np.squeeze(train_indices_cols-1), PATCH_LENGTH)
for i in range(len(train_assign)):
train_data[i] = selectNeighboringPatch(padded_data,train_assign[i][0],train_assign[i][1],PATCH_LENGTH)
test_assign = indexToAssignment(np.squeeze(test_indices_rows-1), np.squeeze(test_indices_cols-1), PATCH_LENGTH)
for i in range(len(test_assign)):
test_data[i] = selectNeighboringPatch(padded_data,test_assign[i][0],test_assign[i][1],PATCH_LENGTH)
Xtrain = train_data.reshape(train_data.shape[0], train_data.shape[1], train_data.shape[2],img_channels)
Xtest = test_data.reshape(test_data.shape[0], test_data.shape[1], test_data.shape[2], img_channels)
train_x = Xtrain.reshape(-1,train_data.shape[1], train_data.shape[2],img_channels,1)
test_x = Xtest.reshape(-1, test_data.shape[1], test_data.shape[2],img_channels,1)
train_num = train_x.shape[0]
test_num = test_x.shape[0]
# construct the computation graph
images = tf.placeholder(tf.float32, shape=[None,FLAGS.window_size,FLAGS.window_size,img_channels,1])
labels = tf.placeholder(tf.int32, shape=[None])
lr= tf.placeholder(tf.float32)
features = res4_model_ss(images,[1],[1])
prototypes = func.construct_center(features, classes_num, 1)
loss1 = func.dce_loss(features, labels, prototypes, FLAGS.temp)
loss2 = func.dis_loss(features, labels, prototypes)
loss = loss1 + FLAGS.weight_dis * loss2
eval_correct = func.evaluation(features, labels, prototypes)
train_op = func.training(loss, lr)
# initialize the variables
init = tf.global_variables_initializer()
sess = tf.Session()
sess.run(init)
# run the computation graph (train and test process)
epoch = 1
index = list(range(train_num))
np.random.shuffle(index)
batch_size = FLAGS.batch_size
batch_num = train_num//batch_size if train_num % batch_size ==0 else train_num//batch_size+1
train_start= time.time()
# train the framework with the training data
while epoch<FLAGS.epoch_num:
time1 = time.time()
loss_now = 0.0
score_now = 0.0
for i in range(batch_num):
batch_x = train_x[index[i*batch_size:(i+1)*batch_size]]
batch_y = train_y[index[i*batch_size:(i+1)*batch_size]]
result = sess.run([train_op, loss, eval_correct], feed_dict={images:batch_x,
labels:batch_y, lr:FLAGS.learning_rate})
loss_now += result[1]
score_now += result[2][1]
score_now /= train_num
print ('epoch {}: training: loss --> {:.3f}, acc --> {:.3f}%'.format(epoch, loss_now, score_now*100))
FLAGS.learning_rate-=FLAGS.decay
epoch += 1
np.random.shuffle(index)
time2 = time.time()
print ('time for this epoch: {:.3f} minutes'.format((time2-time1)/60.0))
print()
print('time for the whole training phase: '+str(time.time()-train_start)+' s')
# test the framework with the test data
# init_prototypes_value = sess.run(prototypes) # get the variable of prototypes
test_start= time.time()
pred_labels, test_score = do_eval(sess, eval_correct, images, labels, test_x, test_y)
print('time for the whole testing phase: '+str(time.time()-test_start)+' s')
sess.close()
pred_labels = np.int8(pred_labels)
test_y = np.int8(test_y)
# confusion matrix
matrix = np.zeros((classes_num, classes_num))
with open('prediction.txt', 'w') as f:
for i in range(test_num):
pre_label = pred_labels[i]
f.write(str(pre_label)+'\n')
matrix[pre_label, test_y[i]] += 1
f.closed
print()
print('The confusion matrix is:')
print(np.int_(matrix))
# calculate the overall accuracy
OA = np.sum(np.trace(matrix)) / float(test_num)
# print('OA = '+str(OA)+'\n')
# calculate the per-class accuracy
# print('ua =')
ua = np.diag(matrix)/np.sum(matrix, axis=0)
# calculate the precision
# print('precision =')
precision = np.diag(matrix)/np.sum(matrix, axis=1)
# calculate the Kappa coefficient
matrix = np.mat(matrix)
Po = OA
xsum = np.sum(matrix, axis=1)
ysum = np.sum(matrix, axis=0)
Pe = float(ysum*xsum)/(np.sum(matrix)**2)
Kappa = float((Po-Pe)/(1-Pe))
## print the classification result
for i in ua:
print(i)
print(str(np.sum(ua)/matrix.shape[0]))
print(str(OA))
print(str(Kappa))
print()
for i in precision:
print(i)
print(str(np.sum(precision)/matrix.shape[0]))
def run_training():
# load the data
print (150*'*')
if FLAGS.dataset == 'mnist':
train_x, train_y = mnist.train.images.reshape(-1,1,28,28), mnist.train.labels
test_x, test_y = mnist.test.images.reshape(-1,1,28,28), mnist.test.labels
# data normalization.
# test_x = test_x - np.mean(test_x, axis = 0)
# test_x = test_x / (np.std(test_x, axis = 0) + 1e-8)
# train_x = train_x - np.mean(train_x, axis = 0)
# train_x= train_x / (np.std(train_x, axis = 0) + 1e-8)
train_num = train_x.shape[0]
test_num = test_x.shape[0]
# construct the computation graph
images_new = tf.placeholder(tf.float32, shape=[None,1,28,28])
images = tf.placeholder(tf.float32, shape=[None,1,28,28])
features, logits = mnist_net(images)
if FLAGS.use_augmentation:
augment = data_augmentor(images_new)
labels = tf.placeholder(tf.int32, shape=[None])
lr= tf.placeholder(tf.float32)
# print('test!')
elif FLAGS.dataset == 'cifar10':
from keras.datasets import cifar10
(xtrain, ytrain), (xtest, ytest) = cifar10.load_data()
ytrain = np.squeeze(ytrain)
ytest = np.squeeze(ytest)
xtrain = xtrain.astype('float32')
xtrain = xtrain / 255.0
xtest = xtest.astype('float32')
xtest = xtest / 255.0
# xtrain, ytrain, xtest, ytest = load_cifar()
train_x, train_y = xtrain.reshape(-1,32,32,3), ytrain
test_x, test_y = xtest.reshape(-1,32,32,3), ytest
# data normalization.
# test_x = test_x - np.mean(test_x, axis = 0)
# test_x = test_x / np.std(test_x, axis = 0)
# train_x = train_x - np.mean(train_x, axis = 0)
# train_x= train_x / np.std(train_x, axis = 0)
#another normalization method.
train_x = train_x - [0.491,0.482,0.447]
train_x = train_x / [0.247,0.243,0.262]
test_x = test_x - [0.491,0.482,0.447]
test_x = test_x / [0.247,0.243,0.262]
train_num = train_x.shape[0]
test_num = test_x.shape[0]
# construct the computation graph
images = tf.placeholder(tf.float32, shape=[None,32,32,3])
# images_normalized = tf.map_fn(lambda img: tf.image.per_image_standardization(img),
# images)
images_new = tf.placeholder(tf.float32, shape=[None,32,32,3])
labels = tf.placeholder(tf.int32, shape=[None])
lr= tf.placeholder(tf.float32)
if FLAGS.model == 'resnet':
if FLAGS.use_augmentation:
augment = data_augmentor(images_new)
features, logits = inference(images, FLAGS.num_residual_blocks, FLAGS.num_classes,\
reuse=False, weight_decay = FLAGS.weight_decay)
else:
if FLAGS.use_augmentation:
augment = data_augmentor(images_new)
features, logits = cifar_net1(images, [0.1,0.5,0.5])
elif FLAGS.dataset == 'cifar100':
from keras.datasets import cifar100
(xtrain, ytrain), (xtest, ytest) = cifar100.load_data()
ytrain = np.squeeze(ytrain)
ytest = np.squeeze(ytest)
xtrain = xtrain.astype('float32')
xtrain = xtrain / 255.0
xtest = xtest.astype('float32')
xtest = xtest / 255.0
# xtrain, ytrain, xtest, ytest = load_cifar100()
train_x, train_y = xtrain.reshape(-1,32,32, 3), ytrain
test_x, test_y = xtest.reshape(-1,32,32,3), ytest
#another normalization method.
train_x = train_x - [0.4914, 0.4822, 0.4465]
train_x = train_x / [0.2023, 0.1994, 0.2010]
test_x = test_x - [0.4914, 0.4822, 0.4465]
test_x = test_x / [0.2023, 0.1994, 0.2010]
train_num = train_x.shape[0]
test_num = test_x.shape[0]
# construct the computation graph
images = tf.placeholder(tf.float32, shape=[None,32,32,3])
images_new = tf.placeholder(tf.float32, shape=[None,32,32,3])
labels = tf.placeholder(tf.int32, shape=[None])
lr= tf.placeholder(tf.float32)
if FLAGS.model == 'densenet':
if FLAGS.use_augmentation:
augment = data_augmentor(images_new)
features, logits = densenet_bc(images, num_classes = FLAGS.num_classes,is_training = True, growth_rate = 12,drop_rate = 0,\
depth = 100, for_imagenet = False, reuse = False, scope='test')
# inference(images, FLAGS.num_residual_blocks, reuse=False, weight_decay = FLAGS.weight_decay)
elif FLAGS.model == 'resnet':
if FLAGS.use_augmentation:
augment = data_augmentor(images_new)
features, logits = inference(images, FLAGS.num_residual_blocks, FLAGS.num_classes,\
reuse=False, weight_decay = FLAGS.weight_decay)
else:
if FLAGS.use_augmentation:
augment = data_augmentor(images_new)
features, logits = cifar_net1(images, [0.1,0.5,0.5])
# import ipdb
# ipdb.set_trace()
if FLAGS.loss == 'cpl':
centers = func.construct_center(features, FLAGS)
if FLAGS.use_dot_product:
loss1 = func.dot_dce_loss(features, labels, centers, FLAGS.temp, FLAGS)
eval_correct = func.evaluation_dot_product(features, labels, centers, FLAGS)
else:
loss1 = func.dce_loss(features, labels, centers, FLAGS.temp, FLAGS)
eval_correct = func.evaluation(features, labels, centers, FLAGS)
loss2 = FLAGS.weight_pl * func.pl_loss(features, labels, centers, FLAGS)
loss = loss1 + loss2
if FLAGS.model == 'resnet':
# reg_losses = tf.reduce_sum(tf.get_collection(tf.GraphKeys.REGULARIZATION_LOSSES))
reg_losses = tf.get_collection(tf.GraphKeys.REGULARIZATION_LOSSES)
loss = tf.add_n([loss] + reg_losses)#loss + reg_losses
if FLAGS.model == 'densenet':
reg_losses = tf.get_collection(tf.GraphKeys.REGULARIZATION_LOSSES)
loss = tf.add_n([loss] + reg_losses)#loss + reg_losses
train_op = func.training(loss, FLAGS, lr)
elif FLAGS.loss == "softmax":
loss = func.softmax_loss(logits, labels)
eval_correct = func.evaluation_softmax(logits, labels)
if FLAGS.model == 'resnet':
reg_losses = tf.get_collection(tf.GraphKeys.REGULARIZATION_LOSSES)
loss = tf.add_n([loss] + reg_losses)#loss + reg_losses
if FLAGS.model == 'densenet':
reg_losses = tf.get_collection(tf.GraphKeys.REGULARIZATION_LOSSES)
loss = tf.add_n([loss] + reg_losses)#loss + reg_losses
train_op = func.training(loss, FLAGS, lr)
init = tf.global_variables_initializer()
# initialize the variables
sess = tf.Session()
sess.run(init)
saver = tf.train.Saver(max_to_keep=1)
if FLAGS.restore:
saver.restore(sess,FLAGS.restore)
print('restore the model from: ', FLAGS.restore)
# run the computation graph (train and test process)
stopping = 0
index = range(train_num)
np.random.shuffle(list(index))
batch_size = FLAGS.batch_size
batch_num = train_num//batch_size if train_num % batch_size==0 else train_num//batch_size+1
# train the framework with the training data
acc_save = []
steps = 0
for epoch in range(FLAGS.num_epoches):
time1 = time.time()
loss_now = 0.0
score_now = 0.0
loss_dce = 0.0
loss_pl = 0.0
reg_loss = 0.0
for i in range(batch_num):
# if loss_now > loss_before or score_now < score_before:
# if (epoch + 1) % FLAGS.decay_step == 0:
if epoch < 10:
# learning_rate_temp = FLAGS.learning_rate * float(steps) / float(batch_num * 10)
learning_rate_temp = FLAGS.learning_rate
batch_x = train_x[index[i*batch_size:(i+1)*batch_size]]
batch_y = train_y[index[i*batch_size:(i+1)*batch_size]]
# mask_temp = compute_mask(FLAGS, batch_y)
if FLAGS.loss == 'cpl':
if FLAGS.model == 'resnet' or FLAGS.model == 'densenet':
if FLAGS.use_augmentation:
batch_x = augment.output(sess, batch_x)
result = sess.run([train_op, loss, loss1, loss2, eval_correct, reg_losses, centers, features],\
feed_dict={images:batch_x, labels:batch_y, lr:learning_rate_temp})
reg_loss += np.sum(result[5])
# print(result[-2])
else:
if FLAGS.use_augmentation:
batch_x = augment.output(sess, batch_x)
result = sess.run([train_op, loss, loss1, loss2, eval_correct, centers, features],\
feed_dict={images:batch_x, labels:batch_y, lr:learning_rate_temp})
print(result[-2])
loss_now += result[1]
score_now += result[4]
loss_dce += result[2]
loss_pl += result[3]
if i == 0:
features_container = np.asarray(result[-1])
label_container = batch_y
else:
features_container = np.concatenate((features_container, result[-1]), axis=0)
label_container = np.concatenate((label_container, batch_y), axis=0)
elif FLAGS.loss == 'softmax':
if FLAGS.model == 'resnet' or FLAGS.model == 'densenet':
if FLAGS.use_augmentation:
batch_x = augment.output(sess, batch_x)
result = sess.run([train_op, loss, eval_correct, reg_losses],\
feed_dict={images:batch_x, labels:batch_y, lr:learning_rate_temp})
reg_loss += np.sum(result[3])
else:
if FLAGS.use_augmentation:
batch_x = augment.output(sess, batch_x)
result = sess.run([train_op, loss, eval_correct],\
feed_dict={images:batch_x, labels:batch_y, lr:learning_rate_temp})
loss_now += result[1]
score_now += result[2]
steps += 1
# for visualization.
if FLAGS.loss == 'cpl' and FLAGS.dataset == 'mnist':
if epoch % 10 == 0:
centers_container = result[-2]
func.visualize(features_container, label_container, epoch, centers_container, FLAGS)
# if epoch +1 == 150 or epoch +1 == 225:
if (epoch + 1) % FLAGS.decay_step == 0:
stopping += 1
learning_rate_temp *= FLAGS.decay_rate
print ("\033[1;31;40mdecay learning rate {}th time!\033[0m".format(stopping))
score_now /= train_num
loss_now /= batch_num
if FLAGS.loss == 'cpl':
loss_dce = loss_dce / batch_num
loss_pl = loss_pl / batch_num
if FLAGS.model == 'resnet' or FLAGS.model == 'densenet':
reg_loss /= batch_num
print ('epoch {}: training: loss --> {:.3f}, dce_loss --> {:.3f}, pl_loss --> {:.3f}, reg_loss --> {:.3f},\
acc --> {:.3f}%'.format(epoch, loss_now, loss_dce, loss_pl, reg_loss, score_now*100))
else:
print ('epoch {}: training: loss --> {:.3f}, dce_loss --> {:.3f}, pl_loss --> {:.3f},\
acc --> {:.3f}%'.format(epoch, loss_now, loss_dce, loss_pl, score_now*100))
elif FLAGS.loss == 'softmax':
if FLAGS.model == 'resnet' or FLAGS.model == 'densenet':
reg_loss /= batch_num
print ('epoch {}: training: loss --> {:.3f}, reg_loss --> {:.3f},\
acc --> {:.3f}%'.format(epoch, loss_now, reg_loss, score_now*100))
else:
print ('epoch {}: training: loss --> {:.3f},\
acc --> {:.3f}%'.format(epoch, loss_now, score_now*100))
# epoch += 1
np.random.shuffle(list(index))
time2 = time.time()
print ('time for this epoch: {:.3f} minutes'.format((time2-time1)/60.0))
# test the framework with the test data
if (epoch + 1) % FLAGS.print_step == 0:
# test_score, logits_test = do_eval(sess, eval_correct, images, labels, test_x, test_y, logits)
# np.save('./cifar10_logits.npy', logits_test)
test_score = do_eval(sess, eval_correct, images, labels, test_x, test_y)
print ('epoch:{}, accuracy on the test dataset: {:.3f}%'.format(epoch, test_score*100))
acc_save.append(test_score)
temp = np.amax(np.asarray(acc_save))
print('best test acc:',temp)
# saving the model.
if not os.path.isdir(os.path.join(FLAGS.log_dir, FLAGS.dataset)):
os.makedirs(os.path.join(FLAGS.log_dir, FLAGS.dataset))
checkpoint_file = os.path.join(str(os.path.join(FLAGS.log_dir, FLAGS.dataset)),\
'model_'+FLAGS.loss+'_'+str(FLAGS.use_dot_product)+'_'+str(FLAGS.learning_rate)+'_'+str(FLAGS.batch_size)+'.ckpt')
saver.save(sess, checkpoint_file, global_step=epoch)
acc_save = np.asarray(acc_save)
np.save('./acc_test_cifar10_original_paper.npy', acc_save)
sess.close()