def main(_):
# placeholders
# -> raw input data
x_raw = tf.placeholder(tf.float32, shape=[None, IMAGE_SIZE, IMAGE_SIZE, 3])
label_raw = tf.placeholder(tf.int32, shape=[None, 1])
# -> parameters involved
with tf.name_scope('isTraining'):
is_Training = tf.placeholder(tf.bool)
with tf.name_scope('isPhase'):
is_Phase = tf.placeholder(tf.bool)
with tf.name_scope('learningRate'):
lr = tf.placeholder(tf.float32)
with tf.name_scope('lambdas'):
lambda1 = tf.placeholder(tf.float32)
lambda2 = tf.placeholder(tf.float32)
lambda3 = tf.placeholder(tf.float32)
lambda4 = tf.placeholder(tf.float32)
# -> feature extractor layers
with tf.variable_scope('FeatureExtractor'):
# modified googLeNet layer pre-trained on ILSVRC2012
google_net_model = GoogleNet_Model.GoogleNet_Model()
embedding_gn = google_net_model.forward(x_raw)
# batch normalization of average pooling layer of googLeNet
embedding = nn_Ops.bn_block(embedding_gn,
normal=True,
is_Training=is_Training,
name='BN')
# 3 fully connected layers of Size EMBEDDING_SIZE
# mean of cluster
embedding_mu = nn_Ops.fc_block(embedding,
in_d=1024,
out_d=EMBEDDING_SIZE,
name='fc1',
is_bn=False,
is_relu=False,
is_Training=is_Training)
# log(sigma^2) of cluster
embedding_sigma = nn_Ops.fc_block(embedding,
in_d=1024,
out_d=EMBEDDING_SIZE,
name='fc2',
is_bn=False,
is_relu=False,
is_Training=is_Training)
# invariant feature of cluster
embedding_zi = nn_Ops.fc_block(embedding,
in_d=1024,
out_d=EMBEDDING_SIZE,
name='fc3',
is_bn=False,
is_relu=False,
is_Training=is_Training)
with tf.name_scope('Loss'):
def exclude_batch_norm(name):
return 'batch_normalization' not in name and 'Generator' not in name and 'Loss' not in name
wdLoss = 5e-3 * tf.add_n([
tf.nn.l2_loss(v)
for v in tf.trainable_variables() if exclude_batch_norm(v.name)
])
label = tf.reduce_mean(label_raw, axis=1)
J_m = Losses.triplet_semihard_loss(label, embedding_zi) + wdLoss
# Generator
with tf.variable_scope('Generator'):
embedding_re = samplingGaussian(embedding_mu, embedding_sigma)
embedding_zv = tf.reshape(embedding_re, (-1, EMBEDDING_SIZE))
# Z = Zi + Zv
embedding_z = tf.add(embedding_zi,
embedding_zv,
name='Synthesized_features')
# Decoder
with tf.variable_scope('Decoder'):
embedding_y1 = nn_Ops.fc_block(embedding_z,
in_d=EMBEDDING_SIZE,
out_d=512,
name='decoder1',
is_bn=True,
is_relu=True,
is_Training=is_Phase)
embedding_y2 = nn_Ops.fc_block(embedding_y1,
in_d=512,
out_d=1024,
name='decoder2',
is_bn=False,
is_relu=False,
is_Training=is_Phase)
print("embedding_sigma", embedding_sigma)
print("embedding_mu", embedding_mu)
# Defining the 4 Losses
# L1 loss
# Definition: L1 = (1/2) x sum( 1 + log(sigma^2) - mu^2 - sigma^2)
with tf.name_scope('L1_KLDivergence'):
kl_loss = 1 + embedding_sigma - K.square(embedding_mu) - K.exp(
embedding_sigma)
kl_loss = K.sum(kl_loss, axis=-1)
kl_loss *= -(0.5 / BATCH_SIZE)
L1 = lambda1 * K.mean(kl_loss)
# L2 Loss
# Definition: L2 = sum( L2Norm( target - outputOf(GoogleNet) ))
with tf.name_scope('L2_Reconstruction'):
L2 = lambda2 * (1 / (20 * BATCH_SIZE)) * tf.reduce_sum(
tf.square(embedding_y2 - embedding_gn))
# L3 Loss
# Definition: L3 = Lm( Z )
with tf.name_scope('L3_Synthesized'):
L3 = lambda3 * Losses.triplet_semihard_loss(labels=label,
embeddings=embedding_z)
# L4 Loss
# Definition: L4 = Lm( Zi )
with tf.name_scope('L4_Metric'):
L4 = lambda4 * J_m
# Classifier Loss
with tf.name_scope('Softmax_Loss'):
cross_entropy, W_fc, b_fc = Losses.cross_entropy(
embedding=embedding_gn, label=label)
c_train_step = nn_Ops.training(loss=L4 + L3 + L1,
lr=lr,
var_scope='FeatureExtractor')
g_train_step = nn_Ops.training(loss=L2, lr=LR_gen, var_scope='Decoder')
s_train_step = nn_Ops.training(loss=cross_entropy,
lr=LR_s,
var_scope='Softmax_classifier')
def model_summary():
model_vars = tf.trainable_variables()
slim.model_analyzer.analyze_vars(model_vars, print_info=True)
model_summary()
with tf.Session(config=config) as sess:
summary_writer = tf.summary.FileWriter(LOGDIR, sess.graph)
sess.run(tf.global_variables_initializer())
saver = tf.train.Saver()
_lr = LR_init
# To Record the losses to TfBoard
Jm_loss = nn_Ops.data_collector(tag='Jm', init=1e+6)
L1_loss = nn_Ops.data_collector(tag='KLDivergence', init=1e+6)
L2_loss = nn_Ops.data_collector(tag='Reconstruction', init=1e+6)
L3_loss = nn_Ops.data_collector(tag='Synthesized', init=1e+6)
L4_loss = nn_Ops.data_collector(tag='Metric', init=1e+6)
cross_entropy_loss = nn_Ops.data_collector(tag='cross_entropy',
init=1e+6)
wd_Loss = nn_Ops.data_collector(tag='weight_decay', init=1e+6)
max_nmi = 0
print("Phase 1")
step = 0
epoch_iterator = stream_train.get_epoch_iterator()
for epoch in tqdm(range(NUM_EPOCHS_PHASE1)):
print("Epoch: ", epoch)
for batch in tqdm(copy.copy(epoch_iterator), total=MAX_ITER):
step += 1
# get images and labels from batch
x_batch_data, Label_raw = nn_Ops.batch_data(batch)
# training step
c_train, g_train, s_train, wd_Loss_var, L1_var,L4_var, J_m_var, \
L3_var, L2_var, cross_en_var = sess.run(
[c_train_step, g_train_step, s_train_step, wdLoss, L1,
L4, J_m, L3, L2, cross_entropy],
feed_dict={x_raw: x_batch_data,
label_raw: Label_raw,
is_Training: True,is_Phase:False,
lambda1:1, lambda2:1, lambda3:0.1, lambda4:1, lr: _lr})
Jm_loss.update(var=J_m_var)
L1_loss.update(var=L1_var)
L2_loss.update(var=L2_var)
L3_loss.update(var=L3_var)
L4_loss.update(var=L4_var)
cross_entropy_loss.update(cross_en_var)
wd_Loss.update(var=wd_Loss_var)
# evaluation
if step % RECORD_STEP == 0:
nmi_te, f1_te, recalls_te = evaluation.Evaluation(
stream_test, image_mean, sess, x_raw, label_raw,
is_Training, is_Phase, embedding_zi, 98, neighbours)
# Summary
eval_summary = tf.Summary()
eval_summary.value.add(tag='test nmi', simple_value=nmi_te)
eval_summary.value.add(tag='test f1', simple_value=f1_te)
for i in range(0, np.shape(neighbours)[0]):
eval_summary.value.add(tag='Recall@%d test' %
neighbours[i],
simple_value=recalls_te[i])
Jm_loss.write_to_tfboard(eval_summary)
eval_summary.value.add(tag='learning_rate',
simple_value=_lr)
L1_loss.write_to_tfboard(eval_summary)
L2_loss.write_to_tfboard(eval_summary)
L3_loss.write_to_tfboard(eval_summary)
L4_loss.write_to_tfboard(eval_summary)
wd_Loss.write_to_tfboard(eval_summary)
cross_entropy_loss.write_to_tfboard(eval_summary)
summary_writer.add_summary(eval_summary, step)
print('Summary Recorder')
if nmi_te > max_nmi:
max_nmi = nmi_te
saver.save(sess, os.path.join(LOGDIR, "model.ckpt"))
print("Model Saved")
summary_writer.flush()
print("Phase 2")
epoch_iterator = stream_train.get_epoch_iterator()
for epoch in tqdm(range(NUM_EPOCHS_PHASE2)):
print("Epoch: ", epoch)
for batch in tqdm(copy.copy(epoch_iterator), total=MAX_ITER):
step += 1
# get images and labels from batch
x_batch_data, Label_raw = nn_Ops.batch_data(batch)
# training step
c_train, g_train, s_train, wd_Loss_var, L1_var,L4_var, J_m_var, \
L3_var, L2_var, cross_en_var = sess.run(
[c_train_step, g_train_step, s_train_step, wdLoss, L1,
L4, J_m, L3, L2, cross_entropy],
feed_dict={x_raw: x_batch_data,
label_raw: Label_raw,
is_Training: True,is_Phase:True,
lambda1:0.8, lambda2:1, lambda3:0.2, lambda4:0.8, lr: _lr})
Jm_loss.update(var=J_m_var)
L1_loss.update(var=L1_var)
L2_loss.update(var=L2_var)
L3_loss.update(var=L3_var)
L4_loss.update(var=L4_var)
wd_Loss.update(var=wd_Loss_var)
cross_entropy_loss.update(cross_en_var)
# evaluation
if step % RECORD_STEP == 0:
nmi_te, f1_te, recalls_te = evaluation.Evaluation(
stream_test, image_mean, sess, x_raw, label_raw,
is_Training, is_Phase, embedding_zi, 98, neighbours)
# Summary
eval_summary = tf.Summary()
eval_summary.value.add(tag='test nmi', simple_value=nmi_te)
eval_summary.value.add(tag='test f1', simple_value=f1_te)
for i in range(0, np.shape(neighbours)[0]):
eval_summary.value.add(tag='Recall@%d test' %
neighbours[i],
simple_value=recalls_te[i])
Jm_loss.write_to_tfboard(eval_summary)
eval_summary.value.add(tag='learning_rate',
simple_value=_lr)
L1_loss.write_to_tfboard(eval_summary)
L2_loss.write_to_tfboard(eval_summary)
L3_loss.write_to_tfboard(eval_summary)
L4_loss.write_to_tfboard(eval_summary)
wd_Loss.write_to_tfboard(eval_summary)
cross_entropy_loss.write_to_tfboard(eval_summary)
summary_writer.add_summary(eval_summary, step)
print('Summary Recorder')
if nmi_te > max_nmi:
max_nmi = nmi_te
saver.save(sess, os.path.join(LOGDIR, "model.ckpt"))
print("Model Saved")
summary_writer.flush()
def main(_):
if not FLAGS.LossType == 'NpairLoss':
print("LossType n-pair-loss is required")
return 0
# placeholders
x_raw = tf.placeholder(
tf.float32,
shape=[None, FLAGS.default_image_size, FLAGS.default_image_size, 3])
label_raw = tf.placeholder(tf.int32, shape=[None, 1])
with tf.name_scope('istraining'):
is_Training = tf.placeholder(tf.bool)
with tf.name_scope('learning_rate'):
lr = tf.placeholder(tf.float32)
with tf.variable_scope('Classifier'):
google_net_model = GoogleNet_Model.GoogleNet_Model()
embedding = google_net_model.forward(x_raw)
if FLAGS.Apply_HDML:
embedding_y_origin = embedding
# Batch Normalization layer 1
embedding = nn_Ops.bn_block(embedding,
normal=FLAGS.normalize,
is_Training=is_Training,
name='BN1')
# FC layer 1
embedding_z = nn_Ops.fc_block(embedding,
in_d=1024,
out_d=FLAGS.embedding_size,
name='fc1',
is_bn=False,
is_relu=False,
is_Training=is_Training)
# Embedding Visualization
assignment, embedding_var = Embedding_Visualization.embedding_assign(
batch_size=256,
embedding=embedding_z,
embedding_size=FLAGS.embedding_size,
name='Embedding_of_fc1')
# conventional Loss function
with tf.name_scope('Loss'):
# wdLoss = layers.apply_regularization(regularizer, weights_list=None)
def exclude_batch_norm(name):
return 'batch_normalization' not in name and 'Generator' not in name and 'Loss' not in name
wdLoss = FLAGS.Regular_factor * tf.add_n([
tf.nn.l2_loss(v)
for v in tf.trainable_variables() if exclude_batch_norm(v.name)
])
# Get the Label
label = tf.reduce_mean(label_raw, axis=1, keep_dims=False)
# For some kinds of Losses, the embedding should be l2 normed
#embedding_l = embedding_z
J_m = Loss_ops.Loss(embedding_z, label, FLAGS.LossType) + wdLoss
# if HNG is applied
if FLAGS.Apply_HDML:
with tf.name_scope('Javg'):
Javg = tf.placeholder(tf.float32)
with tf.name_scope('Jgen'):
Jgen = tf.placeholder(tf.float32)
embedding_z_quta = HDML.Pulling(FLAGS.LossType, embedding_z, Javg)
embedding_z_concate = tf.concat([embedding_z, embedding_z_quta],
axis=0)
# Generator
with tf.variable_scope('Generator'):
# generator fc3
embedding_y_concate = nn_Ops.fc_block(embedding_z_concate,
in_d=FLAGS.embedding_size,
out_d=512,
name='generator1',
is_bn=True,
is_relu=True,
is_Training=is_Training)
# generator fc4
embedding_y_concate = nn_Ops.fc_block(embedding_y_concate,
in_d=512,
out_d=1024,
name='generator2',
is_bn=False,
is_relu=False,
is_Training=is_Training)
embedding_yp, embedding_yq = HDML.npairSplit(embedding_y_concate)
with tf.variable_scope('Classifier'):
embedding_z_quta = nn_Ops.bn_block(embedding_yq,
normal=FLAGS.normalize,
is_Training=is_Training,
name='BN1',
reuse=True)
embedding_z_quta = nn_Ops.fc_block(embedding_z_quta,
in_d=1024,
out_d=FLAGS.embedding_size,
name='fc1',
is_bn=False,
is_relu=False,
reuse=True,
is_Training=is_Training)
embedding_zq_anc = tf.slice(
input_=embedding_z_quta,
begin=[0, 0],
size=[int(FLAGS.batch_size / 2),
int(FLAGS.embedding_size)])
embedding_zq_negtile = tf.slice(
input_=embedding_z_quta,
begin=[int(FLAGS.batch_size / 2), 0],
size=[
int(np.square(FLAGS.batch_size / 2)),
int(FLAGS.embedding_size)
])
with tf.name_scope('Loss'):
J_syn = (1. -
tf.exp(-FLAGS.beta / Jgen)) * Loss_ops.new_npair_loss(
labels=label,
embedding_anchor=embedding_zq_anc,
embedding_positive=embedding_zq_negtile,
equal_shape=False,
reg_lambda=FLAGS.loss_l2_reg)
J_m = (tf.exp(-FLAGS.beta / Jgen)) * J_m
J_metric = J_m + J_syn
cross_entropy, W_fc, b_fc = HDML.cross_entropy(
embedding=embedding_y_origin, label=label)
embedding_yq_anc = tf.slice(input_=embedding_yq,
begin=[0, 0],
size=[int(FLAGS.batch_size / 2), 1024])
embedding_yq_negtile = tf.slice(
input_=embedding_yq,
begin=[int(FLAGS.batch_size / 2), 0],
size=[int(np.square(FLAGS.batch_size / 2)), 1024])
J_recon = (1 - FLAGS._lambda) * tf.reduce_sum(
tf.square(embedding_yp - embedding_y_origin))
J_soft = HDML.genSoftmax(embedding_anc=embedding_yq_anc,
embedding_neg=embedding_yq_negtile,
W_fc=W_fc,
b_fc=b_fc,
label=label)
J_gen = J_recon + J_soft
if FLAGS.Apply_HDML:
c_train_step = nn_Ops.training(loss=J_metric,
lr=lr,
var_scope='Classifier')
g_train_step = nn_Ops.training(loss=J_gen,
lr=FLAGS.lr_gen,
var_scope='Generator')
s_train_step = nn_Ops.training(loss=cross_entropy,
lr=FLAGS.s_lr,
var_scope='Softmax_classifier')
else:
train_step = nn_Ops.training(loss=J_m, lr=lr)
# initialise the session
with tf.Session(config=config) as sess:
# Initial all the variables with the sess
sess.run(tf.global_variables_initializer())
saver = tf.train.Saver()
# learning rate
_lr = FLAGS.init_learning_rate
# Restore a checkpoint
if FLAGS.load_formalVal:
saver.restore(
sess, FLAGS.log_save_path + FLAGS.dataSet + '/' +
FLAGS.LossType + '/' + FLAGS.formerTimer)
# Training
# epoch_iterator = stream_train.get_epoch_iterator()
# collectors
J_m_loss = nn_Ops.data_collector(tag='Jm', init=1e+6)
J_syn_loss = nn_Ops.data_collector(tag='J_syn', init=1e+6)
J_metric_loss = nn_Ops.data_collector(tag='J_metric', init=1e+6)
J_soft_loss = nn_Ops.data_collector(tag='J_soft', init=1e+6)
J_recon_loss = nn_Ops.data_collector(tag='J_recon', init=1e+6)
J_gen_loss = nn_Ops.data_collector(tag='J_gen', init=1e+6)
cross_entropy_loss = nn_Ops.data_collector(tag='cross_entropy',
init=1e+6)
wd_Loss = nn_Ops.data_collector(tag='weight_decay', init=1e+6)
# max_nmi = 0
# step = 0
#
# bp_epoch = FLAGS.init_batch_per_epoch
# evaluation
print('only eval!')
# nmi_tr, f1_tr, recalls_tr = evaluation.Evaluation(
# stream_train_eval, image_mean, sess, x_raw, label_raw, is_Training, embedding_z, 98, neighbours)
# nmi_te, f1_te, recalls_te = evaluation.Evaluation(
# stream_test, image_mean, sess, x_raw, label_raw, is_Training, embedding_z, FLAGS.num_class_test, neighbours)
embeddings, labels = evaluation.Evaluation_icon2(
stream_train, image_mean, sess, x_raw, label_raw, is_Training,
embedding_z, FLAGS.num_class_test, neighbours)
out_dir = os.path.expanduser(
FLAGS.log_save_path[0:len(FLAGS.log_save_path) - 1] +
'_embeddings')
if not os.path.exists(out_dir):
os.makedirs(out_dir)
for idx, distance in enumerate(embeddings):
save_1Darray(distance,
os.path.expanduser(os.path.join(out_dir, str(idx))))
print('End')
def main(_):
if not FLAGS.LossType == 'Triplet':
print("LossType triplet loss is required")
return 0
# placeholders
x_raw = tf.placeholder(tf.float32, shape=[None, FLAGS.default_image_size, FLAGS.default_image_size, 3])
label_raw = tf.placeholder(tf.int32, shape=[None, 1])
with tf.name_scope('istraining'):
is_Training = tf.placeholder(tf.bool)
with tf.name_scope('learning_rate'):
lr = tf.placeholder(tf.float32)
with tf.variable_scope('Classifier'):
google_net_model = GoogleNet_Model.GoogleNet_Model(pooling_type=FLAGS.pooling_type)
embedding = google_net_model.forward(x_raw)
embedding = nn_Ops.bn_block(
embedding, normal=FLAGS.normalize, is_Training=is_Training, name='BN1')
embedding = nn_Ops.fc_block(
embedding, in_d=1024, out_d=FLAGS.embedding_size,
name='fc1', is_bn=False, is_relu=False, is_Training=is_Training
)
with tf.name_scope('Loss'):
# wdLoss = layers.apply_regularization(regularizer, weights_list=None)
def exclude_batch_norm(name):
return 'batch_normalization' not in name and 'Generator' not in name and 'Loss' not in name
wdLoss = FLAGS.Regular_factor * tf.add_n(
[tf.nn.l2_loss(v) for v in tf.trainable_variables() if exclude_batch_norm(v.name)]
)
# Get the Label
label = tf.reduce_mean(label_raw, axis=1, keep_dims=False)
# For some kinds of Losses, the embedding should be l2 normed
#embedding_l = embedding_z
J_m = Loss_ops.Loss(embedding, label, FLAGS.LossType)
# J_m=tf.Print(J_m,[J_m])
J_m = J_m + wdLoss
with tf.name_scope('Jgen2'):
Jgen2 = tf.placeholder(tf.float32)
with tf.name_scope('Pull_dis_mean'):
Pull_dis_mean = tf.placeholder(tf.float32)
Pull_dis = nn_Ops.data_collector(tag='pulling_linear', init=25)
embedding_l, disap = Two_Stage_Model.Pulling_Positivate(FLAGS.LossType, embedding, can=FLAGS.alpha)
with tf.variable_scope('Generator1'):
embedding_g = Two_Stage_Model.generator_ori(embedding_l, FLAGS.LossType)
with tf.name_scope('Loss'):
def exclude_batch_norm1(name):
return 'batch_normalization' not in name and 'Generator1' in name and 'Loss' not in name
wdLoss_g1 = FLAGS.Regular_factor * tf.add_n(
[tf.nn.l2_loss(v) for v in tf.trainable_variables() if exclude_batch_norm1(v.name)]
)
# Generator1_S
with tf.variable_scope('GeneratorS'):
embedding_s = Two_Stage_Model.generator_ori(embedding_g, FLAGS.LossType)
with tf.name_scope('Loss'):
def exclude_batch_norm2(name):
return 'batch_normalization' not in name and 'GeneratorS' in name and 'Loss' not in name
wdLoss_g1s = FLAGS.Regular_factor * tf.add_n(
[tf.nn.l2_loss(v) for v in tf.trainable_variables() if exclude_batch_norm2(v.name)]
)
# Discriminator1 only contains the anchor and positive message
with tf.variable_scope('Discriminator1') as scope:
embedding_dis1 = Two_Stage_Model.discriminator1(Two_Stage_Model.slice_ap_n(embedding),1)
scope.reuse_variables()
embedding_g_dis1 = Two_Stage_Model.discriminator1(Two_Stage_Model.slice_ap_n(embedding_g),1)
# scope.reuse_variables()
# embedding_s_dis1 = Two_Stage_Model.discriminator1(Two_Stage_Model.slice_ap_n(embedding_s))
with tf.variable_scope('DiscriminatorS') as scope:
embedding_dis1S = Two_Stage_Model.discriminator1(Two_Stage_Model.slice_ap_n(embedding),1)
scope.reuse_variables()
embedding_s_dis1S = Two_Stage_Model.discriminator1(Two_Stage_Model.slice_ap_n(embedding_s),1)
with tf.variable_scope('Generator2'):
embedding_h = Two_Stage_Model.generator_ori(embedding_g)
with tf.variable_scope('Discriminator2') as scope:
embedding_dis2 = Two_Stage_Model.discriminator2(embedding)
scope.reuse_variables()
embedding_g_dis2 = Two_Stage_Model.discriminator2(embedding_g)
scope.reuse_variables()
embedding_h_dis2 = Two_Stage_Model.discriminator2(embedding_h)
embedding_h_cli = embedding_h
'''
using binary_crossentropy replace sparse_softmax_cross_entropy_with_logits
'''
with tf.name_scope('Loss'):
J_syn = Loss_ops.Loss(embedding_h_cli, label, _lossType=FLAGS.LossType, hard_ori=FLAGS.HARD_ORI)
# J_syn = tf.constant(0.)
J_m = J_m
para1 = tf.exp(-FLAGS.beta / Jgen2)
J_metric = para1 * J_m + (1. - para1) * J_syn
real_loss_d1 = tf.reduce_mean(tf.nn.sparse_softmax_cross_entropy_with_logits(
labels=tf.zeros([FLAGS.batch_size*2/3], dtype=tf.int32), logits=embedding_dis1))
generated1_loss_d1 = tf.reduce_mean(tf.nn.sparse_softmax_cross_entropy_with_logits(
labels=tf.ones([FLAGS.batch_size*2/3], dtype=tf.int32), logits=embedding_g_dis1))
J_LD1 = FLAGS.Softmax_factor * -(tf.reduce_mean(tf.log(1. - tf.nn.sigmoid(embedding_dis1)) + tf.log(tf.nn.sigmoid(embedding_g_dis1))))
J_LG1 = FLAGS.Softmax_factor * (-tf.reduce_mean(tf.log(1. - tf.nn.sigmoid(embedding_g_dis1)))) + wdLoss_g1
embedding_g_split = tf.split(embedding_g, 3, axis=0)
embedding_g_split_anc = embedding_g_split[0]
embedding_g_split_pos = embedding_g_split[1]
dis_g1 = tf.reduce_mean(
Two_Stage_Model.distance(embedding_g_split_anc, embedding_g_split_pos))
dis_g1 = tf.maximum(-dis_g1 + 1000, 0.)*10
J_LG1 = J_LG1
'''add for D1S'''
J_LD1S = FLAGS.Softmax_factor * (-tf.reduce_mean(tf.log(1. - tf.nn.sigmoid(embedding_dis1S)) + tf.log(tf.nn.sigmoid(embedding_s_dis1S))))
J_LG1_S_cross = FLAGS.Softmax_factor *(-tf.reduce_mean(tf.log(1. - tf.nn.sigmoid(embedding_s_dis1S))))
recon_ori_s = FLAGS.Recon_factor * tf.reduce_mean(Two_Stage_Model.distance(embedding_s, embedding))
J_LG1_S = J_LG1_S_cross + recon_ori_s + wdLoss_g1s
# label_onehot = tf.one_hot(label, FLAGS.num_class+1)
real_loss_d2 = tf.reduce_mean(tf.nn.sparse_softmax_cross_entropy_with_logits(labels=label, logits=embedding_dis2))
generated2_loss_d2 = tf.reduce_mean(tf.nn.sparse_softmax_cross_entropy_with_logits(labels=label, logits=embedding_g_dis2))
generated2_h_loss_d2 = tf.reduce_mean(tf.nn.sparse_softmax_cross_entropy_with_logits(
labels=tf.zeros([FLAGS.batch_size] ,dtype=tf.int32)+FLAGS.num_class, logits=embedding_h_dis2))
J_LD2 = FLAGS.Softmax_factor * (real_loss_d2 + generated2_loss_d2 + generated2_h_loss_d2) / 3
J_LD2 = J_LD2 + J_syn
cross_entropy, W_fc, b_fc = THSG.cross_entropy(embedding=embedding, label=label)
Logits_q = tf.matmul(embedding_h, W_fc) + b_fc
J_LG2_cross_entropy = FLAGS.Softmax_factor * FLAGS._lambda * tf.reduce_mean(
tf.nn.sparse_softmax_cross_entropy_with_logits(labels=label, logits=Logits_q))
J_LG2C_cross_GAN = tf.reduce_mean(
tf.nn.sparse_softmax_cross_entropy_with_logits(labels=label, logits=embedding_h_dis2))
J_LG2C_cross = FLAGS.Softmax_factor * (J_LG2C_cross_GAN + J_LG2_cross_entropy) / 2
recon_g_h_ancpos = FLAGS.Recon_factor * tf.reduce_mean(Two_Stage_Model.distance(Two_Stage_Model.slice_ap_n(embedding_g),
Two_Stage_Model.slice_ap_n(embedding_h)))
J_fan = FLAGS.Softmax_factor * Loss_ops.Loss_fan(embedding_h, label, _lossType=FLAGS.LossType,
param=2 - tf.exp(-FLAGS.beta / Jgen2),
hard_ori=FLAGS.HARD_ORI)
J_LG2 = J_LG2C_cross + recon_g_h_ancpos + J_fan
# J_LG2 = tf.Print(J_LG2, [J_LG2])
J_F = J_metric
c_train_step = nn_Ops.training(loss=J_F, lr=lr, var_scope='Classifier')
d1_train_step = nn_Ops.training(loss=J_LD1, lr=FLAGS.lr_dis, var_scope='Discriminator1')
g1_train_step = nn_Ops.training(loss=J_LG1, lr=FLAGS.lr_gen, var_scope='Generator1')
d1s_train_step = nn_Ops.training(loss=J_LD1S, lr=FLAGS.lr_dis, var_scope='DiscriminatorS')
g1s_train_step = nn_Ops.training(loss=J_LG1_S, lr=FLAGS.lr_gen, var_scope='GeneratorS*Generator1')
d2_train_step = nn_Ops.training(loss=J_LD2, lr=FLAGS.lr_dis, var_scope='Discriminator2')
g2_train_step = nn_Ops.training(loss=J_LG2, lr=FLAGS.lr_gen, var_scope='Generator2')
s_train_step = nn_Ops.training(loss=cross_entropy, lr=FLAGS.s_lr, var_scope='Softmax_classifier')
# initialise the session
with tf.Session(config=config) as sess:
summary_writer = tf.summary.FileWriter(LOGDIR, sess.graph)
# Initial all the variables with the sess
sess.run(tf.global_variables_initializer())
saver = tf.train.Saver()
# learning rate
_lr = FLAGS.init_learning_rate
# Restore a checkpoint
if FLAGS.load_formalVal:
saver.restore(sess, FLAGS.log_save_path+FLAGS.dataSet+'/'+FLAGS.LossType+'/'+FLAGS.formerTimer)
# Training
epoch_iterator = stream_train.get_epoch_iterator()
# collectors
J_m_loss = nn_Ops.data_collector(tag='J_m', init=1e+6)
J_syn_loss = nn_Ops.data_collector(tag='J_syn', init=1e+6)
J_metric_loss = nn_Ops.data_collector(tag='J_metric', init=1e+6)
real_loss_d1_loss = nn_Ops.data_collector(tag='real_loss_d1', init=1e+6)
generated1_loss_d1_loss = nn_Ops.data_collector(tag='generated1_loss_d1', init=1e+6)
J_LD1S_loss = nn_Ops.data_collector(tag='L_D1S', init=1e+6)
J_LG1_loss = nn_Ops.data_collector(tag='J_LG1', init=1e+6)
J_LG1_S_cross_loss = nn_Ops.data_collector(tag='J_LG1_S_cross', init=1e+6)
recon_ori_s_loss = nn_Ops.data_collector(tag='recon_ori_s', init=1e+6)
real_loss_d2_loss = nn_Ops.data_collector(tag='real_loss_d2', init=1e+6)
generated2_loss_d2_loss = nn_Ops.data_collector(tag='generated2_loss_d2', init=1e+6)
generated2_h_loss_d2_loss = nn_Ops.data_collector(tag='generated2_h_loss_d2', init=1e+6)
J_LG2C_cross_loss = nn_Ops.data_collector(tag='J_LG2C_cross', init=1e+6)
recon_g_h_ancpos_loss = nn_Ops.data_collector(tag='recon_g_h_ancpos', init=1e+6)
J_LG2_loss = nn_Ops.data_collector(tag='J_LG2', init=1e+6)
J_fan_loss = nn_Ops.data_collector(tag='J_fan', init=1e+6)
J_LD1_loss = nn_Ops.data_collector(tag='J_LD1', init=1e+6)
J_LD2_loss = nn_Ops.data_collector(tag='J_LD2', init=1e+6)
J_F_loss = nn_Ops.data_collector(tag='J_F', init=1e+6)
cross_entropy_loss = nn_Ops.data_collector(tag='cross_entropy', init=1e+6)
dis_g1_loss = nn_Ops.data_collector(tag='dis_g1', init=1e+6)
max_nmi = 0
step = 0
bp_epoch = FLAGS.init_batch_per_epoch
with tqdm(total=FLAGS.max_steps) as pbar:
for batch in copy.copy(epoch_iterator):
# get images and labels from batch
x_batch_data, Label_raw = nn_Ops.batch_data(batch)
pbar.update(1)
_, _, _, disap_var = sess.run([d1_train_step, d1s_train_step, d2_train_step,disap], feed_dict={x_raw: x_batch_data,
label_raw: Label_raw,
is_Training: True, lr: _lr,
Pull_dis_mean : Pull_dis.read()})
Pull_dis.update(var=disap_var.mean()*0.8)
_, _, _, disap_var = sess.run([d1_train_step, d1s_train_step, d2_train_step,disap], feed_dict={x_raw: x_batch_data,
label_raw: Label_raw,
is_Training: True, lr: _lr,
Pull_dis_mean : Pull_dis.read()})
Pull_dis.update(var=disap_var.mean()*0.8)
c_train, s_train, d1_train, g1_train, d1s_train, g1s_train, d2_train, g2_train, real_loss_d2_var, J_metric_var, J_m_var, \
J_syn_var, real_loss_d1_var, generated1_loss_d1_var, J_LD1_var, J_LD2_var, J_LD1S_var, \
J_LG1_var, J_LG1_S_cross_var, recon_ori_s_var, real_loss_d2_var, generated2_loss_d2_var, cross_entropy_var, \
generated2_h_loss_d2_var, J_LG2C_cross_var, recon_g_h_ancpos_var, J_LG2_var, J_fan_var, J_F_var, dis_g1_var,disap_var\
= sess.run(
[c_train_step, s_train_step, d1_train_step, g1_train_step, d1s_train_step, g1s_train_step, d2_train_step, g2_train_step,
real_loss_d2, J_metric, J_m, J_syn, real_loss_d1, generated1_loss_d1, J_LD1, J_LD2,
J_LD1S, J_LG1, J_LG1_S_cross, recon_ori_s, real_loss_d2,
generated2_loss_d2, cross_entropy, generated2_h_loss_d2, J_LG2C_cross, recon_g_h_ancpos, J_LG2, J_fan, J_F, dis_g1,disap],
feed_dict={x_raw: x_batch_data,
label_raw: Label_raw,
is_Training: True, lr: _lr, Jgen2: J_LG2_loss.read(), Pull_dis_mean : Pull_dis.read()})
Pull_dis.update(var=disap_var.mean()*0.8)
real_loss_d2_loss.update(var=real_loss_d2_var)
J_metric_loss.update(var=J_metric_var)
J_m_loss.update(var=J_m_var)
J_syn_loss.update(var=J_syn_var)
real_loss_d1_loss.update(var=real_loss_d1_var)
generated1_loss_d1_loss.update(var=generated1_loss_d1_var)
J_LD1S_loss.update(var=J_LD1S_var)
dis_g1_loss.update(var=dis_g1_var)
J_LG1_loss.update(var=J_LG1_var)
J_LG1_S_cross_loss.update(var=J_LG1_S_cross_var)
recon_ori_s_loss.update(var=recon_ori_s_var)
real_loss_d2_loss.update(var=real_loss_d2_var)
generated2_loss_d2_loss.update(var=generated2_loss_d2_var)
generated2_h_loss_d2_loss.update(var=generated2_h_loss_d2_var)
J_LG2C_cross_loss.update(var=J_LG2C_cross_var)
recon_g_h_ancpos_loss.update(var=recon_g_h_ancpos_var)
J_LG2_loss.update(var=J_LG2_var)
J_fan_loss.update(var=J_fan_var)
J_LD1_loss.update(var=J_LD1_var)
J_LD2_loss.update(var=J_LD2_var)
J_F_loss.update(var=J_F_var)
cross_entropy_loss.update(var=cross_entropy_var)
step += 1
# print('learning rate %f' % _lr)
# evaluation
if step % bp_epoch == 0:
print('only eval eval')
# nmi_te_cli, f1_te_cli, recalls_te_cli, map_cli = evaluation.Evaluation(
# stream_test, image_mean, sess, x_raw, label_raw, is_Training, embedding, 98, neighbours)
recalls_te_cli, map_cli = evaluation.Evaluation(
stream_test, image_mean, sess, x_raw, label_raw, is_Training, embedding, 98, neighbours)
# Summary
eval_summary = tf.Summary()
# eval_summary.value.add(tag='test nmi', simple_value=nmi_te_cli)
# eval_summary.value.add(tag='test f1', simple_value=f1_te_cli)
eval_summary.value.add(tag='test map', simple_value=map_cli)
for i in range(0, np.shape(neighbours)[0]):
eval_summary.value.add(tag='Recall@%d test' % neighbours[i], simple_value=recalls_te_cli[i])
# Embedding_Visualization.embedding_Visual("./", embedding_var, summary_writer)
real_loss_d2_loss.write_to_tfboard(eval_summary)
J_metric_loss.write_to_tfboard(eval_summary)
J_m_loss.write_to_tfboard(eval_summary)
J_syn_loss.write_to_tfboard(eval_summary)
real_loss_d1_loss.write_to_tfboard(eval_summary)
generated1_loss_d1_loss.write_to_tfboard(eval_summary)
J_LD1S_loss.write_to_tfboard(eval_summary)
J_LG1_loss.write_to_tfboard(eval_summary)
dis_g1_loss.write_to_tfboard(eval_summary)
J_LD1_loss.write_to_tfboard(eval_summary)
J_LD2_loss.write_to_tfboard(eval_summary)
J_F_loss.write_to_tfboard(eval_summary)
J_LG1_S_cross_loss.write_to_tfboard(eval_summary)
recon_ori_s_loss.write_to_tfboard(eval_summary)
real_loss_d2_loss.write_to_tfboard(eval_summary)
generated2_loss_d2_loss.write_to_tfboard(eval_summary)
generated2_h_loss_d2_loss.write_to_tfboard(eval_summary)
J_LG2C_cross_loss.write_to_tfboard(eval_summary)
recon_g_h_ancpos_loss.write_to_tfboard(eval_summary)
J_LG2_loss.write_to_tfboard(eval_summary)
J_fan_loss.write_to_tfboard(eval_summary)
cross_entropy_loss.write_to_tfboard(eval_summary)
summary_writer.add_summary(eval_summary, step)
print('Summary written')
if map_cli > max_nmi:
max_nmi = map_cli
print("Saved")
saver.save(sess, os.path.join(LOGDIR, "model.ckpt"))
# saver.save(sess, os.path.join(LOGDIR, "model.ckpt"))
summary_writer.flush()
if step in [5632, 6848]:
_lr = _lr * 0.5
if step >= 5000:
bp_epoch = FLAGS.batch_per_epoch
if step >= FLAGS.max_steps:
os._exit(0)
def main(_):
if not FLAGS.LossType == 'NpairLoss':
print("LossType n-pair-loss is required")
return 0
# placeholders
x_raw = tf.placeholder(
tf.float32,
shape=[None, FLAGS.default_image_size, FLAGS.default_image_size, 3])
label_raw = tf.placeholder(tf.int32, shape=[None, 1])
with tf.name_scope('istraining'):
is_Training = tf.placeholder(tf.bool)
with tf.name_scope('learning_rate'):
lr = tf.placeholder(tf.float32)
with tf.variable_scope('Classifier'):
google_net_model = GoogleNet_Model.GoogleNet_Model()
embedding = google_net_model.forward(x_raw)
if FLAGS.Apply_HDML:
embedding_y_origin = embedding
# Batch Normalization layer 1
embedding = nn_Ops.bn_block(embedding,
normal=FLAGS.normalize,
is_Training=is_Training,
name='BN1')
# FC layer 1
embedding_z = nn_Ops.fc_block(embedding,
in_d=1024,
out_d=FLAGS.embedding_size,
name='fc1',
is_bn=False,
is_relu=False,
is_Training=is_Training)
# Embedding Visualization
assignment, embedding_var = Embedding_Visualization.embedding_assign(
batch_size=256,
embedding=embedding_z,
embedding_size=FLAGS.embedding_size,
name='Embedding_of_fc1')
# conventional Loss function
with tf.name_scope('Loss'):
# wdLoss = layers.apply_regularization(regularizer, weights_list=None)
def exclude_batch_norm(name):
return 'batch_normalization' not in name and 'Generator' not in name and 'Loss' not in name
wdLoss = FLAGS.Regular_factor * tf.add_n([
tf.nn.l2_loss(v)
for v in tf.trainable_variables() if exclude_batch_norm(v.name)
])
# Get the Label
label = tf.reduce_mean(label_raw, axis=1, keep_dims=False)
# For some kinds of Losses, the embedding should be l2 normed
#embedding_l = embedding_z
J_m = Loss_ops.Loss(embedding_z, label, FLAGS.LossType) + wdLoss
# if HNG is applied
if FLAGS.Apply_HDML:
with tf.name_scope('Javg'):
Javg = tf.placeholder(tf.float32)
with tf.name_scope('Jgen'):
Jgen = tf.placeholder(tf.float32)
embedding_z_quta = HDML.Pulling(FLAGS.LossType, embedding_z, Javg)
embedding_z_concate = tf.concat([embedding_z, embedding_z_quta],
axis=0)
# Generator
with tf.variable_scope('Generator'):
# generator fc3
embedding_y_concate = nn_Ops.fc_block(embedding_z_concate,
in_d=FLAGS.embedding_size,
out_d=512,
name='generator1',
is_bn=True,
is_relu=True,
is_Training=is_Training)
# generator fc4
embedding_y_concate = nn_Ops.fc_block(embedding_y_concate,
in_d=512,
out_d=1024,
name='generator2',
is_bn=False,
is_relu=False,
is_Training=is_Training)
embedding_yp, embedding_yq = HDML.npairSplit(embedding_y_concate)
with tf.variable_scope('Classifier'):
embedding_z_quta = nn_Ops.bn_block(embedding_yq,
normal=FLAGS.normalize,
is_Training=is_Training,
name='BN1',
reuse=True)
embedding_z_quta = nn_Ops.fc_block(embedding_z_quta,
in_d=1024,
out_d=FLAGS.embedding_size,
name='fc1',
is_bn=False,
is_relu=False,
reuse=True,
is_Training=is_Training)
embedding_zq_anc = tf.slice(
input_=embedding_z_quta,
begin=[0, 0],
size=[int(FLAGS.batch_size / 2),
int(FLAGS.embedding_size)])
embedding_zq_negtile = tf.slice(
input_=embedding_z_quta,
begin=[int(FLAGS.batch_size / 2), 0],
size=[
int(np.square(FLAGS.batch_size / 2)),
int(FLAGS.embedding_size)
])
with tf.name_scope('Loss'):
J_syn = (1. -
tf.exp(-FLAGS.beta / Jgen)) * Loss_ops.new_npair_loss(
labels=label,
embedding_anchor=embedding_zq_anc,
embedding_positive=embedding_zq_negtile,
equal_shape=False,
reg_lambda=FLAGS.loss_l2_reg)
J_m = (tf.exp(-FLAGS.beta / Jgen)) * J_m
J_metric = J_m + J_syn
cross_entropy, W_fc, b_fc = HDML.cross_entropy(
embedding=embedding_y_origin, label=label)
embedding_yq_anc = tf.slice(input_=embedding_yq,
begin=[0, 0],
size=[int(FLAGS.batch_size / 2), 1024])
embedding_yq_negtile = tf.slice(
input_=embedding_yq,
begin=[int(FLAGS.batch_size / 2), 0],
size=[int(np.square(FLAGS.batch_size / 2)), 1024])
J_recon = (1 - FLAGS._lambda) * tf.reduce_sum(
tf.square(embedding_yp - embedding_y_origin))
J_soft = HDML.genSoftmax(embedding_anc=embedding_yq_anc,
embedding_neg=embedding_yq_negtile,
W_fc=W_fc,
b_fc=b_fc,
label=label)
J_gen = J_recon + J_soft
if FLAGS.Apply_HDML:
c_train_step = nn_Ops.training(loss=J_metric,
lr=lr,
var_scope='Classifier')
g_train_step = nn_Ops.training(loss=J_gen,
lr=FLAGS.lr_gen,
var_scope='Generator')
s_train_step = nn_Ops.training(loss=cross_entropy,
lr=FLAGS.s_lr,
var_scope='Softmax_classifier')
else:
train_step = nn_Ops.training(loss=J_m, lr=lr)
# initialise the session
with tf.Session(config=config) as sess:
# Initial all the variables with the sess
sess.run(tf.global_variables_initializer())
saver = tf.train.Saver()
# learning rate
_lr = FLAGS.init_learning_rate
# Restore a checkpoint
if FLAGS.load_formalVal:
saver.restore(
sess, FLAGS.log_save_path + FLAGS.dataSet + '/' +
FLAGS.LossType + '/' + FLAGS.formerTimer)
# Training
epoch_iterator = stream_train.get_epoch_iterator()
# collectors
J_m_loss = nn_Ops.data_collector(tag='Jm', init=1e+6)
J_syn_loss = nn_Ops.data_collector(tag='J_syn', init=1e+6)
J_metric_loss = nn_Ops.data_collector(tag='J_metric', init=1e+6)
J_soft_loss = nn_Ops.data_collector(tag='J_soft', init=1e+6)
J_recon_loss = nn_Ops.data_collector(tag='J_recon', init=1e+6)
J_gen_loss = nn_Ops.data_collector(tag='J_gen', init=1e+6)
cross_entropy_loss = nn_Ops.data_collector(tag='cross_entropy',
init=1e+6)
wd_Loss = nn_Ops.data_collector(tag='weight_decay', init=1e+6)
max_nmi = 0
step = 0
bp_epoch = FLAGS.init_batch_per_epoch
with tqdm(total=FLAGS.max_steps) as pbar:
for batch in copy.copy(epoch_iterator):
# get images and labels from batch
x_batch_data, Label_raw = nn_Ops.batch_data(batch)
pbar.update(1)
if not FLAGS.Apply_HDML:
train, J_m_var, wd_Loss_var = sess.run(
[train_step, J_m, wdLoss],
feed_dict={
x_raw: x_batch_data,
label_raw: Label_raw,
is_Training: True,
lr: _lr
})
J_m_loss.update(var=J_m_var)
wd_Loss.update(var=wd_Loss_var)
else:
c_train, g_train, s_train, wd_Loss_var, J_metric_var, J_m_var, \
J_syn_var, J_recon_var, J_soft_var, J_gen_var, cross_en_var = sess.run(
[c_train_step, g_train_step, s_train_step, wdLoss,
J_metric, J_m, J_syn, J_recon, J_soft, J_gen, cross_entropy],
feed_dict={x_raw: x_batch_data,
label_raw: Label_raw,
is_Training: True, lr: _lr, Javg: J_m_loss.read(), Jgen: J_gen_loss.read()})
wd_Loss.update(var=wd_Loss_var)
J_metric_loss.update(var=J_metric_var)
J_m_loss.update(var=J_m_var)
J_syn_loss.update(var=J_syn_var)
J_recon_loss.update(var=J_recon_var)
J_soft_loss.update(var=J_soft_var)
J_gen_loss.update(var=J_gen_var)
cross_entropy_loss.update(cross_en_var)
step += 1
# print('learning rate %f' % _lr)
# evaluation
if step % bp_epoch == 0:
print('only eval eval')
# nmi_tr, f1_tr, recalls_tr = evaluation.Evaluation(
# stream_train_eval, image_mean, sess, x_raw, label_raw, is_Training, embedding_z, 98, neighbours)
nmi_te, f1_te, recalls_te = evaluation.Evaluation(
stream_test, image_mean, sess, x_raw, label_raw,
is_Training, embedding_z, FLAGS.num_class_test,
neighbours)
# Summary
eval_summary = tf.Summary()
# eval_summary.value.add(tag='train nmi', simple_value=nmi_tr)
# eval_summary.value.add(tag='train f1', simple_value=f1_tr)
# for i in range(0, np.shape(neighbours)[0]):
# eval_summary.value.add(tag='Recall@%d train' % neighbours[i], simple_value=recalls_tr[i])
eval_summary.value.add(tag='test nmi', simple_value=nmi_te)
eval_summary.value.add(tag='test f1', simple_value=f1_te)
for i in range(0, np.shape(neighbours)[0]):
eval_summary.value.add(tag='Recall@%d test' %
neighbours[i],
simple_value=recalls_te[i])
J_m_loss.write_to_tfboard(eval_summary)
wd_Loss.write_to_tfboard(eval_summary)
eval_summary.value.add(tag='learning_rate',
simple_value=_lr)
if FLAGS.Apply_HDML:
J_syn_loss.write_to_tfboard(eval_summary)
J_metric_loss.write_to_tfboard(eval_summary)
J_soft_loss.write_to_tfboard(eval_summary)
J_recon_loss.write_to_tfboard(eval_summary)
J_gen_loss.write_to_tfboard(eval_summary)
cross_entropy_loss.write_to_tfboard(eval_summary)
summary_writer.add_summary(eval_summary, step)
print('Summary written')
if nmi_te > max_nmi:
max_nmi = nmi_te
print("Saved")
saver.save(sess, os.path.join(LOGDIR,
"modelBest.ckpt"))
saver.save(sess, os.path.join(LOGDIR, "model.ckpt"))
summary_writer.flush()
# if step in [5632, 6848]:
# _lr = _lr * 0.5
if step >= 5000:
bp_epoch = FLAGS.batch_per_epoch
if step >= FLAGS.max_steps:
os._exit()
def main(_):
x_raw = tf.placeholder(tf.float32, shape=[None, IMAGE_SIZE, IMAGE_SIZE, 3])
label_raw = tf.placeholder(tf.int32, shape=[None, 1])
with tf.name_scope('istraining'):
is_Training = tf.placeholder(tf.bool)
with tf.name_scope('isphase'):
is_Phase = tf.placeholder(tf.bool)
with tf.name_scope('learning_rate'):
lr = tf.placeholder(tf.float32)
with tf.name_scope('lambdas'):
lambda1 = tf.placeholder(tf.float32)
lambda2 = tf.placeholder(tf.float32)
lambda3 = tf.placeholder(tf.float32)
lambda4 = tf.placeholder(tf.float32)
with tf.variable_scope('Feature_extractor'):
google_net_model = GoogleNet_Model.GoogleNet_Model()
embedding = google_net_model.forward(x_raw)
embedding_y_origin = embedding
# output
embedding = nn_Ops.bn_block(embedding,
normal=True,
is_Training=is_Training,
name='FC3')
embedding_z = nn_Ops.fc_block(embedding,
in_d=1024,
out_d=EMBEDDING_SIZE,
name='fc1',
is_bn=False,
is_relu=False,
is_Training=is_Training)
# predict mu
embedding1 = nn_Ops.bn_block(embedding,
normal=True,
is_Training=is_Training,
name='FC1')
embedding_mu = nn_Ops.fc_block(embedding1,
in_d=1024,
out_d=EMBEDDING_SIZE,
name='fc2',
is_bn=False,
is_relu=False,
is_Training=is_Training)
# predict (log (sigma^2))
embedding2 = nn_Ops.bn_block(embedding,
normal=True,
is_Training=is_Training,
name='FC2')
embedding_sigma = nn_Ops.fc_block(embedding2,
in_d=1024,
out_d=EMBEDDING_SIZE,
name='fc3',
is_bn=False,
is_relu=False,
is_Training=is_Training)
with tf.name_scope('Loss'):
def exclude_batch_norm(name):
return 'batch_normalization' not in name and 'Generator' not in name and 'Loss' not in name
wdLoss = 5e-3 * tf.add_n([
tf.nn.l2_loss(v)
for v in tf.trainable_variables() if exclude_batch_norm(v.name)
])
label = tf.reduce_mean(label_raw, axis=1)
J_m = Losses.triplet_semihard_loss(label, embedding_z) + wdLoss
zv_emb = mysampling(embedding_mu, embedding_sigma)
# zv = tfd.Independent(tfd.Normal(loc=embedding_mu, scale=embedding_sigma),
# reinterpreted_batch_ndims=1)
# zv_emb=zv.sample([1])
zv_emb1 = tf.reshape(zv_emb, (-1, 128))
# zv_prob=zv.prob(zv_emb)
# prior_prob=zv.prob(zv_emb)
embedding_z_add = tf.add(embedding_z, zv_emb1, name='Synthesized_features')
with tf.variable_scope('Decoder'):
embedding_y_add = nn_Ops.fc_block(embedding_z_add,
in_d=EMBEDDING_SIZE,
out_d=512,
name='decoder1',
is_bn=True,
is_relu=True,
is_Training=is_Phase)
embedding_y_add = nn_Ops.fc_block(embedding_y_add,
in_d=512,
out_d=1024,
name='decoder2',
is_bn=False,
is_relu=False,
is_Training=is_Phase)
print("embedding_sigma", embedding_sigma)
print("embedding_mu", embedding_mu)
with tf.name_scope('Loss_KL'):
kl_loss = 1 + embedding_sigma - K.square(embedding_mu) - K.exp(
embedding_sigma)
kl_loss = K.sum(kl_loss, axis=-1)
kl_loss *= -0.5
# L1 loss
J_KL = lambda1 * K.mean(kl_loss)
with tf.name_scope('Loss_Recon'):
# L2 Loss
J_recon = lambda2 * (0.5) * tf.reduce_sum(
tf.square(embedding_y_add - embedding_y_origin))
with tf.name_scope('Loss_synthetic'):
# L3 Loss
J_syn = lambda3 * Losses.triplet_semihard_loss(
labels=label, embeddings=embedding_z_add)
with tf.name_scope('Loss_metric'):
# L4 Loss
J_metric = lambda4 * J_m
with tf.name_scope('Loss_Softmax_classifier'):
cross_entropy, W_fc, b_fc = Losses.cross_entropy(
embedding=embedding_y_origin, label=label)
c_train_step = nn_Ops.training(loss=J_metric + J_syn + J_KL,
lr=lr,
var_scope='Feature_extractor')
g_train_step = nn_Ops.training(loss=J_recon,
lr=LR_gen,
var_scope='Decoder')
s_train_step = nn_Ops.training(loss=cross_entropy,
lr=LR_s,
var_scope='Softmax_classifier')
def model_summary():
model_vars = tf.trainable_variables()
slim.model_analyzer.analyze_vars(model_vars, print_info=True)
model_summary()
with tf.Session(config=config) as sess:
summary_writer = tf.summary.FileWriter(LOGDIR, sess.graph)
sess.run(tf.global_variables_initializer())
saver = tf.train.Saver()
_lr = LR_init
epoch_iterator = stream_train.get_epoch_iterator()
J_KL_loss = nn_Ops.data_collector(tag='JKL', init=1e+6)
J_m_loss = nn_Ops.data_collector(tag='Jm', init=1e+6)
J_syn_loss = nn_Ops.data_collector(tag='J_syn', init=1e+6)
J_metric_loss = nn_Ops.data_collector(tag='J_metric', init=1e+6)
J_recon_loss = nn_Ops.data_collector(tag='J_recon', init=1e+6)
cross_entropy_loss = nn_Ops.data_collector(tag='cross_entropy',
init=1e+6)
wd_Loss = nn_Ops.data_collector(tag='weight_decay', init=1e+6)
max_nmi = 0
step = 0
with tqdm(total=MAX_ITER) as pbar:
for batch in copy.copy(epoch_iterator):
# get images and labels from batch
x_batch_data, Label_raw = nn_Ops.batch_data(batch)
pbar.update(1)
c_train, g_train, s_train, wd_Loss_var, J_KL_var,J_metric_var, J_m_var, \
J_syn_var, J_recon_var, cross_en_var = sess.run(
[c_train_step, g_train_step, s_train_step, wdLoss, J_KL,
J_metric, J_m, J_syn, J_recon, cross_entropy],
feed_dict={x_raw: x_batch_data,
label_raw: Label_raw,
is_Training: True,is_Phase:False,
lambda1:1, lambda2:0.5, lambda3:0.5, lambda4:1, lr: _lr})
wd_Loss.update(var=wd_Loss_var)
J_KL_loss.update(var=J_KL_var)
J_metric_loss.update(var=J_metric_var)
J_m_loss.update(var=J_m_var)
J_syn_loss.update(var=J_syn_var)
J_recon_loss.update(var=J_recon_var)
cross_entropy_loss.update(cross_en_var)
step += 1
# evaluation
if step % bp_epoch == 0:
print('only eval eval')
nmi_te, f1_te, recalls_te = evaluation.Evaluation(
stream_test, image_mean, sess, x_raw, label_raw,
is_Training, is_Phase, embedding_z, 98, neighbours)
# Summary
eval_summary = tf.Summary()
eval_summary.value.add(tag='test nmi', simple_value=nmi_te)
eval_summary.value.add(tag='test f1', simple_value=f1_te)
for i in range(0, np.shape(neighbours)[0]):
eval_summary.value.add(tag='Recall@%d test' %
neighbours[i],
simple_value=recalls_te[i])
J_m_loss.write_to_tfboard(eval_summary)
wd_Loss.write_to_tfboard(eval_summary)
J_KL_loss.write_to_tfboard(eval_summary)
eval_summary.value.add(tag='learning_rate',
simple_value=_lr)
J_syn_loss.write_to_tfboard(eval_summary)
J_metric_loss.write_to_tfboard(eval_summary)
J_recon_loss.write_to_tfboard(eval_summary)
cross_entropy_loss.write_to_tfboard(eval_summary)
summary_writer.add_summary(eval_summary, step)
print('Summary written')
if nmi_te > max_nmi:
max_nmi = nmi_te
print("Saved")
saver.save(sess, os.path.join(LOGDIR, "model.ckpt"))
summary_writer.flush()
if step >= MAX_ITER:
break
with tqdm(total=MAX_ITER) as pbar:
for batch in copy.copy(epoch_iterator):
# get images and labels from batch
x_batch_data, Label_raw = nn_Ops.batch_data(batch)
pbar.update(1)
c_train, g_train, s_train, wd_Loss_var, J_KL_var,J_metric_var, J_m_var, \
J_syn_var, J_recon_var, cross_en_var = sess.run(
[c_train_step, g_train_step, s_train_step, wdLoss, J_KL,
J_metric, J_m, J_syn, J_recon, cross_entropy],
feed_dict={x_raw: x_batch_data,
label_raw: Label_raw,
is_Training: True,is_Phase:True,
lambda1:0.8, lambda2:1, lambda3:0.4, lambda4:0.8, lr: _lr})
wd_Loss.update(var=wd_Loss_var)
J_KL_loss.update(var=J_KL_var)
J_metric_loss.update(var=J_metric_var)
J_m_loss.update(var=J_m_var)
J_syn_loss.update(var=J_syn_var)
J_recon_loss.update(var=J_recon_var)
cross_entropy_loss.update(cross_en_var)
step += 1
# evaluation
if step % bp_epoch == 0:
print('only eval eval')
nmi_te, f1_te, recalls_te = evaluation.Evaluation(
stream_test, image_mean, sess, x_raw, label_raw,
is_Training, is_Phase, embedding_z, 98, neighbours)
# Summary
eval_summary = tf.Summary()
eval_summary.value.add(tag='test nmi', simple_value=nmi_te)
eval_summary.value.add(tag='test f1', simple_value=f1_te)
for i in range(0, np.shape(neighbours)[0]):
eval_summary.value.add(tag='Recall@%d test' %
neighbours[i],
simple_value=recalls_te[i])
J_m_loss.write_to_tfboard(eval_summary)
wd_Loss.write_to_tfboard(eval_summary)
J_KL_loss.write_to_tfboard(eval_summary)
eval_summary.value.add(tag='learning_rate',
simple_value=_lr)
J_syn_loss.write_to_tfboard(eval_summary)
J_metric_loss.write_to_tfboard(eval_summary)
J_recon_loss.write_to_tfboard(eval_summary)
cross_entropy_loss.write_to_tfboard(eval_summary)
summary_writer.add_summary(eval_summary, step)
print('Summary written')
if nmi_te > max_nmi:
max_nmi = nmi_te
print("Saved")
saver.save(sess, os.path.join(LOGDIR, "model.ckpt"))
summary_writer.flush()
if step >= 2 * MAX_ITER:
os._exit(os.EX_OK)
def configTfSession(streams, summary_writer, train_steps, losses):
stream_train, stream_train_eval, stream_test = streams
wdLoss, J_m, Javg, Jgen, J_metric, J_gen, J_syn, cross_entropy, J_recon, J_soft = losses
with tf.Session(config=config) as sess:
sess.run(tf.global_variables_initializer())
saver = tf.train.Saver()
# learning rate
_lr = FLAGS.init_learning_rate
# Restore a checkpoint
if FLAGS.load_formalVal:
saver.restore(
sess, FLAGS.log_save_path + FLAGS.dataSet + '/' +
FLAGS.LossType + '/' + FLAGS.formerTimer)
# Training
epoch_iterator = stream_train.get_epoch_iterator()
# collectors
J_m_loss = nn_Ops.data_collector(tag='Jm', init=1e+6)
J_syn_loss = nn_Ops.data_collector(tag='J_syn', init=1e+6)
J_metric_loss = nn_Ops.data_collector(tag='J_metric', init=1e+6)
J_soft_loss = nn_Ops.data_collector(tag='J_soft', init=1e+6)
J_recon_loss = nn_Ops.data_collector(tag='J_recon', init=1e+6)
J_gen_loss = nn_Ops.data_collector(tag='J_gen', init=1e+6)
cross_entropy_loss = nn_Ops.data_collector(tag='cross_entropy',
init=1e+6)
wd_Loss = nn_Ops.data_collector(tag='weight_decay', init=1e+6)
max_nmi = 0
step = 0
bp_epoch = FLAGS.init_batch_per_epoch
with tqdm(total=FLAGS.max_steps) as pbar:
for batch in copy.copy(epoch_iterator):
# get images and labels from batch
x_batch_data, Label_raw = nn_Ops.batch_data(batch)
pbar.update(1)
if not FLAGS.Apply_HDML:
train_step = train_steps
train, J_m_var, wd_Loss_var = sess.run(
[train_step, J_m, wdLoss],
feed_dict={
x_raw: x_batch_data,
label_raw: Label_raw,
is_Training: True,
lr: _lr
})
J_m_loss.update(var=J_m_var)
wd_Loss.update(var=wd_Loss_var)
else:
c_train_step, g_train_step, s_train_step = train_steps
c_train, g_train, s_train, wd_Loss_var, J_metric_var, J_m_var, \
J_syn_var, J_recon_var, J_soft_var, J_gen_var, cross_en_var = sess.run(
[c_train_step, g_train_step, s_train_step, wdLoss,
J_metric, J_m, J_syn, J_recon, J_soft, J_gen, cross_entropy],
feed_dict={x_raw: x_batch_data,
label_raw: Label_raw,
is_Training: True, lr: _lr, Javg: J_m_loss.read(), Jgen: J_gen_loss.read()})
wd_Loss.update(var=wd_Loss_var)
J_metric_loss.update(var=J_metric_var)
J_m_loss.update(var=J_m_var)
J_syn_loss.update(var=J_syn_var)
J_recon_loss.update(var=J_recon_var)
J_soft_loss.update(var=J_soft_var)
J_gen_loss.update(var=J_gen_var)
cross_entropy_loss.update(cross_en_var)
step += 1
# print('learning rate %f' % _lr)
# evaluation
if step % bp_epoch == 0:
print('only eval eval')
# nmi_tr, f1_tr, recalls_tr = evaluation.Evaluation(
# stream_train_eval, image_mean, sess, x_raw, label_raw, is_Training, embedding_z, 98, neighbours)
nmi_te, f1_te, recalls_te = evaluation.Evaluation(
stream_test, image_mean, sess, x_raw, label_raw,
is_Training, embedding_z, 98, neighbours)
# Summary
eval_summary = tf.Summary()
# eval_summary.value.add(tag='train nmi', simple_value=nmi_tr)
# eval_summary.value.add(tag='train f1', simple_value=f1_tr)
# for i in range(0, np.shape(neighbours)[0]):
# eval_summary.value.add(tag='Recall@%d train' % neighbours[i], simple_value=recalls_tr[i])
eval_summary.value.add(tag='test nmi', simple_value=nmi_te)
eval_summary.value.add(tag='test f1', simple_value=f1_te)
for i in range(0, np.shape(neighbours)[0]):
eval_summary.value.add(tag='Recall@%d test' %
neighbours[i],
simple_value=recalls_te[i])
J_m_loss.write_to_tfboard(eval_summary)
wd_Loss.write_to_tfboard(eval_summary)
eval_summary.value.add(tag='learning_rate',
simple_value=_lr)
if FLAGS.Apply_HDML:
J_syn_loss.write_to_tfboard(eval_summary)
J_metric_loss.write_to_tfboard(eval_summary)
J_soft_loss.write_to_tfboard(eval_summary)
J_recon_loss.write_to_tfboard(eval_summary)
J_gen_loss.write_to_tfboard(eval_summary)
cross_entropy_loss.write_to_tfboard(eval_summary)
summary_writer.add_summary(eval_summary, step)
print('Summary written')
if nmi_te > max_nmi:
max_nmi = nmi_te
print("Saved")
saver.save(sess, os.path.join(LOGDIR, "model.ckpt"))
summary_writer.flush()
if step in [5632, 6848]:
_lr = _lr * 0.5
if step >= 5000:
bp_epoch = FLAGS.batch_per_epoch
if step >= FLAGS.max_steps:
os._exit(0)