def main():
random.seed(SEED)
np.random.seed(SEED)
# prepare data
gen_data_loader = Gen_Data_loader(BATCH_SIZE)
likelihood_data_loader = Gen_Data_loader(BATCH_SIZE) # For testing
dis_data_loader = Dis_Data_loader(BATCH_SIZE)
generator = Generator(vocab_size, BATCH_SIZE, EMB_DIM, HIDDEN_DIM, SEQ_LENGTH, START_TOKEN)
# target_params's size: [15 * 5000 * 32]
target_params = pickle.load(open('./save/target_params_py3.pkl', 'rb'))
# The oracle model
target_lstm = TARGET_LSTM(5000, BATCH_SIZE, EMB_DIM, HIDDEN_DIM, 20, 0, target_params)
discriminator = Discriminator(sequence_length=20, num_classes=2, vocab_size=vocab_size,
embedding_size=dis_embedding_dim,
filter_sizes=dis_filter_sizes, num_filters=dis_num_filters,
l2_reg_lambda=dis_l2_reg_lambda)
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
sess.run(tf.global_variables_initializer())
generate_samples_from_target(sess, target_lstm, BATCH_SIZE, generated_num, positive_file)
gen_data_loader.create_batches(positive_file)
# print("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
#
# likelihood_data_loader.create_batches(positive_file)
# for i in range(100):
# test_loss = target_loss(sess, target_lstm, likelihood_data_loader)
# print('my step ', i, 'test_loss ', test_loss)
# input("next:")
# input("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
log = open('save/experiment-log.txt', 'w')
# pre-train generator
print('Start pre-training...')
log.write('pre-training...\n')
ans_file = open("learning_cure.txt", 'w')
for epoch in range(120): # 120
loss = pre_train_epoch(sess, generator, gen_data_loader)
if epoch % 1 == 0:
generate_samples(sess, generator, BATCH_SIZE, generated_num, eval_file)
likelihood_data_loader.create_batches(eval_file)
test_loss = target_loss(sess, target_lstm, likelihood_data_loader)
print('pre-train epoch ', epoch, 'test_loss ', test_loss)
buffer = 'epoch:\t' + str(epoch) + '\tnll:\t' + str(test_loss) + '\n'
log.write(buffer)
ans_file.write("%s\n" % str(test_loss))
buffer = 'Start pre-training discriminator...'
print(buffer)
log.write(buffer)
for _ in range(10): # 10
generate_samples(sess, generator, BATCH_SIZE, generated_num, negative_file)
dis_data_loader.load_train_data(positive_file, negative_file)
for _ in range(3):
dis_data_loader.reset_pointer()
for it in range(dis_data_loader.num_batch):
x_batch, y_batch = dis_data_loader.next_batch()
feed = {
discriminator.input_x: x_batch,
discriminator.input_y: y_batch,
discriminator.dropout_keep_prob: dis_dropout_keep_prob,
}
d_loss, d_acc, _ = sess.run([discriminator.loss, discriminator.accuracy, discriminator.train_op], feed)
buffer = "discriminator loss %f acc %f\n" % (d_loss, d_acc)
print(buffer)
log.write(buffer)
ans_file.write("==========\n")
print("Start Adversarial Training...")
log.write('adversarial training...')
for total_batch in range(TOTAL_BATCH):
# Train the generator
for it in range(1):
samples = generator.generate(sess)
rewards = generator.get_reward(sess, samples, 16, discriminator, START_TOKEN)
a = str(samples[0])
b = str(rewards[0])
buffer = "%s\n%s\n\n" % (a, b)
# print(buffer)
log.write(buffer)
rewards_loss = generator.update_with_rewards(sess, samples, rewards, START_TOKEN)
# good rewards
# good_samples = gen_data_loader.next_batch()
# rewards = np.array([[1.0] * SEQ_LENGTH] * BATCH_SIZE)
# a = str(good_samples[0])
# b = str(rewards[0])
# buffer = "%s\n%s\n\n" % (a, b)
# print(buffer)
# log.write(buffer)
# rewards_loss = generator.update_with_rewards(sess, good_samples, rewards, START_TOKEN)
# little1 good reward
# litter1_samples = gen_data_loader.next_batch()
# rewards = generator.get_reward(sess, litter1_samples, 16, discriminator, START_TOKEN)
# a = str(little1 good reward[0])
# b = str(rewards[0])
# buffer = "%s\n%s\n\n" % (a, b)
# print(buffer)
# log.write(buffer)
# rewards_loss = generator.update_with_rewards(sess, litter1_samples, rewards, START_TOKEN)
# Test
if total_batch % 1 == 0 or total_batch == TOTAL_BATCH - 1:
generate_samples(sess, generator, BATCH_SIZE, generated_num, eval_file)
likelihood_data_loader.create_batches(eval_file)
test_loss = target_loss(sess, target_lstm, likelihood_data_loader)
buffer = 'reward-train epoch %s train loss %s test_loss %s\n' % (str(total_batch), str(rewards_loss), str(test_loss))
print(buffer)
log.write(buffer)
ans_file.write("%s\n" % str(test_loss))
# Train the discriminator
for _ in range(1):
generate_samples(sess, generator, BATCH_SIZE, generated_num, negative_file)
dis_data_loader.load_train_data(positive_file, negative_file)
for _ in range(3):
dis_data_loader.reset_pointer()
for it in range(dis_data_loader.num_batch):
x_batch, y_batch = dis_data_loader.next_batch()
feed = {
discriminator.input_x: x_batch,
discriminator.input_y: y_batch,
discriminator.dropout_keep_prob: dis_dropout_keep_prob,
}
d_loss, d_acc, _ = sess.run([discriminator.loss, discriminator.accuracy, discriminator.train_op], feed)
if total_batch % 5 == 0 or total_batch == TOTAL_BATCH - 1:
buffer = "discriminator loss %f acc %f\n" % (d_loss, d_acc)
print(buffer)
log.write(buffer)
def main(unused_argv):
config_train = training_config()
config_gen = generator_config()
config_dis = discriminator_config()
np.random.seed(config_train.seed)
assert config_train.start_token == 0
# Build dataloader for generaotr, testing and discriminator
gen_data_loader = Gen_Data_loader(config_gen.gen_batch_size)
likelihood_data_loader = Gen_Data_loader(config_gen.gen_batch_size)
dis_data_loader = Dis_Data_loader(config_dis.dis_batch_size)
# Build generator and its rollout
generator = Generator(config=config_gen)
generator.build()
rollout_gen = Rollout(config=config_gen)
# Build target LSTM
target_params = pickle.load(open('save/target_params_py3.pkl', 'rb'))
target_lstm = TARGET_LSTM(config=config_gen, params=target_params) # The oracle model
# Build discriminator
discriminator = Discriminator(config=config_dis)
discriminator.build_discriminator()
# Build optimizer op for pretraining
pretrained_optimizer = tf.train.AdamOptimizer(config_train.gen_learning_rate)
var_pretrained = [v for v in tf.trainable_variables() if
'teller' in v.name] # Using name 'teller' here to prevent name collision of target LSTM
gradients, variables = zip(
*pretrained_optimizer.compute_gradients(generator.pretrain_loss, var_list=var_pretrained))
gradients, _ = tf.clip_by_global_norm(gradients, config_train.grad_clip)
gen_pre_upate = pretrained_optimizer.apply_gradients(zip(gradients, variables))
# Initialize all variables
sess = tf.Session(config=config_hardware)
sess.run(tf.global_variables_initializer())
# Initalize data loader of generator
generate_samples(sess, target_lstm, config_train.batch_size, config_train.generated_num, config_train.positive_file)
gen_data_loader.create_batches(config_train.positive_file)
# Start pretraining
log = open('save/experiment-log.txt', 'w')
print('Start pre-training generator...')
log.write('pre-training...\n')
for epoch in tqdm(range(config_train.pretrained_epoch_num), desc='Pre-Training(Generator)'):
gen_data_loader.reset_pointer()
for it in range(gen_data_loader.num_batch):
batch = gen_data_loader.next_batch()
_, g_loss = sess.run([gen_pre_upate, generator.pretrain_loss], feed_dict={generator.input_seqs_pre: batch,
generator.input_seqs_mask: np.ones_like(
batch)})
if epoch % config_train.test_per_epoch == 0:
generate_samples(sess, generator, config_train.batch_size, config_train.generated_num,
config_train.eval_file)
likelihood_data_loader.create_batches(config_train.eval_file)
test_loss = target_loss(sess, target_lstm, likelihood_data_loader)
# print('pre-train epoch ', epoch, 'test_loss ', test_loss)
loss_info = 'pre-train epoch ' + str(epoch) + ' test_loss ' + str(test_loss)
tqdm.write(loss_info)
buffer = 'epoch:\t' + str(epoch) + '\tnll:\t' + str(test_loss) + '\n'
log.write(buffer)
print('Start pre-training discriminator...')
for _ in tqdm(range(config_train.dis_update_time_pre), desc='Pre-Training(Discriminator)'):
generate_samples(sess, generator, config_train.batch_size, config_train.generated_num,
config_train.negative_file)
dis_data_loader.load_train_data(config_train.positive_file, config_train.negative_file)
for _ in range(config_train.dis_update_epoch_pre):
dis_data_loader.reset_pointer()
for it in range(dis_data_loader.num_batch):
x_batch, y_batch = dis_data_loader.next_batch()
feed = {
discriminator.input_x: x_batch,
discriminator.input_y: y_batch,
discriminator.dropout_keep_prob: config_dis.dis_dropout_keep_prob
}
_ = sess.run(discriminator.train_op, feed)
# Build optimizer op for adversarial training
train_adv_opt = tf.train.AdamOptimizer(config_train.gen_learning_rate)
gradients, variables = zip(*train_adv_opt.compute_gradients(generator.gen_loss_adv, var_list=var_pretrained))
gradients, _ = tf.clip_by_global_norm(gradients, config_train.grad_clip)
train_adv_update = train_adv_opt.apply_gradients(zip(gradients, variables))
# Initialize global variables of optimizer for adversarial training
uninitialized_var = [e for e in tf.global_variables() if e not in tf.trainable_variables()]
init_vars_uninit_op = tf.variables_initializer(uninitialized_var)
sess.run(init_vars_uninit_op)
# Start adversarial training
for total_batch in tqdm(range(config_train.total_batch), desc='Adversarial-Training'):
for _ in tqdm(range(config_train.gen_update_time), desc='Adversarial Generate Update'):
samples = sess.run(generator.sample_word_list_reshape)
feed = {"pred_seq_rollout:0": samples}
reward_rollout = []
# calcuate the reward given in the specific step t by roll out
for iter_roll in range(config_train.rollout_num):
rollout_list = sess.run(rollout_gen.sample_rollout_step, feed_dict=feed)
rollout_list_stack = np.vstack(rollout_list) # shape: #batch_size * #rollout_step, #sequence length
reward_rollout_seq = sess.run(discriminator.ypred_for_auc,
feed_dict={discriminator.input_x: rollout_list_stack,
discriminator.dropout_keep_prob: 1.0})
reward_last_tok = sess.run(discriminator.ypred_for_auc, feed_dict={discriminator.input_x: samples,
discriminator.dropout_keep_prob: 1.0})
reward_allseq = np.concatenate((reward_rollout_seq, reward_last_tok), axis=0)[:, 1]
reward_tmp = []
for r in range(config_gen.gen_batch_size):
reward_tmp.append(reward_allseq[range(r, config_gen.gen_batch_size * config_gen.sequence_length,
config_gen.gen_batch_size)])
reward_rollout.append(np.array(reward_tmp))
rewards = np.sum(reward_rollout, axis=0) / config_train.rollout_num
_, gen_loss = sess.run([train_adv_update, generator.gen_loss_adv],
feed_dict={generator.input_seqs_adv: samples,
generator.rewards: rewards})
if total_batch % config_train.test_per_epoch == 0 or total_batch == config_train.total_batch - 1:
generate_samples(sess,
generator,
config_train.batch_size,
config_train.generated_num,
config_train.eval_file)
likelihood_data_loader.create_batches(config_train.eval_file)
test_loss = target_loss(sess, target_lstm, likelihood_data_loader)
buffer = 'epoch:\t' + str(total_batch) + '\tnll:\t' + str(test_loss) + '\n'
loss_info = 'total_batch: ' + str(total_batch) + 'test_loss: ' + str(test_loss)
tqdm.write(loss_info)
log.write(buffer)
for _ in tqdm(range(config_train.dis_update_time_adv), desc='Adversarial Discriminator Update'):
generate_samples(sess, generator,
config_train.batch_size,
config_train.generated_num,
config_train.negative_file)
dis_data_loader.load_train_data(config_train.positive_file, config_train.negative_file)
for _ in range(config_train.dis_update_epoch_adv):
dis_data_loader.reset_pointer()
for it in range(dis_data_loader.num_batch):
x_batch, y_batch = dis_data_loader.next_batch()
feed = {
discriminator.input_x: x_batch,
discriminator.input_y: y_batch,
discriminator.dropout_keep_prob: config_dis.dis_dropout_keep_prob
}
_ = sess.run(discriminator.train_op, feed)
log.close()
def main():
random.seed(SEED)
np.random.seed(SEED)
assert START_TOKEN == 0
gen_data_loader = Gen_Data_loader(BATCH_SIZE)
likelihood_data_loader = Gen_Data_loader(BATCH_SIZE) # For testing
vocab_size = 5000
dis_data_loader = Dis_Data_loader(BATCH_SIZE)
generator = Generator(vocab_size, BATCH_SIZE, EMB_DIM, HIDDEN_DIM, SEQ_LENGTH, START_TOKEN)
target_params = pickle.load(open('save/target_params.pkl'))
target_lstm = TARGET_LSTM(vocab_size, BATCH_SIZE, EMB_DIM, HIDDEN_DIM, SEQ_LENGTH, START_TOKEN,
target_params) # The oracle model
discriminator = Discriminator(sequence_length=20, num_classes=2, vocab_size=vocab_size,
embedding_size=dis_embedding_dim,
filter_sizes=dis_filter_sizes, num_filters=dis_num_filters,
l2_reg_lambda=dis_l2_reg_lambda)
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
sess.run(tf.global_variables_initializer())
# First, use the oracle model to provide the positive examples, which are sampled from the oracle data distribution
generate_samples(sess, target_lstm, BATCH_SIZE, generated_num, positive_file)
gen_data_loader.create_batches(positive_file)
log = open('save/experiment-log.txt', 'w')
# pre-train generator
print('Start pre-training...')
log.write('pre-training...\n')
for epoch in range(PRE_EPOCH_NUM):
loss = pre_train_epoch(sess, generator, gen_data_loader)
if epoch % 5 == 0:
generate_samples(sess, generator, BATCH_SIZE, generated_num, eval_file)
likelihood_data_loader.create_batches(eval_file)
test_loss = target_loss(sess, target_lstm, likelihood_data_loader)
print
'pre-train epoch ', epoch, 'test_loss ', test_loss
buffer = 'epoch:\t' + str(epoch) + '\tnll:\t' + str(test_loss) + '\n'
log.write(buffer)
print
'Start pre-training discriminator...'
# Train 3 epoch on the generated data and do this for 50 times
for _ in range(50):
generate_samples(sess, generator, BATCH_SIZE, generated_num, negative_file)
dis_data_loader.load_train_data(positive_file, negative_file)
for _ in range(3):
dis_data_loader.reset_pointer()
for it in range(dis_data_loader.num_batch):
x_batch, y_batch = dis_data_loader.next_batch()
feed = {
discriminator.input_x: x_batch,
discriminator.input_y: y_batch,
discriminator.dropout_keep_prob: dis_dropout_keep_prob
}
_ = sess.run(discriminator.train_op, feed)
rollout = ROLLOUT(generator, 0.8)
print
'#########################################################################'
print
'Start Adversarial Training...'
log.write('adversarial training...\n')
for total_batch in range(TOTAL_BATCH):
# Train the generator for one step
for it in range(1):
samples = generator.generate(sess)
rewards = rollout.get_reward(sess, samples, 16, discriminator)
feed = {generator.x: samples, generator.rewards: rewards}
_ = sess.run(generator.g_updates, feed_dict=feed)
# Test
if total_batch % 5 == 0 or total_batch == TOTAL_BATCH - 1:
generate_samples(sess, generator, BATCH_SIZE, generated_num, eval_file)
likelihood_data_loader.create_batches(eval_file)
test_loss = target_loss(sess, target_lstm, likelihood_data_loader)
buffer = 'epoch:\t' + str(total_batch) + '\tnll:\t' + str(test_loss) + '\n'
print
'total_batch: ', total_batch, 'test_loss: ', test_loss
log.write(buffer)
# Update roll-out parameters
rollout.update_params()
# Train the discriminator
for _ in range(5):
generate_samples(sess, generator, BATCH_SIZE, generated_num, negative_file)
dis_data_loader.load_train_data(positive_file, negative_file)
for _ in range(3):
dis_data_loader.reset_pointer()
for it in range(dis_data_loader.num_batch):
x_batch, y_batch = dis_data_loader.next_batch()
feed = {
discriminator.input_x: x_batch,
discriminator.input_y: y_batch,
discriminator.dropout_keep_prob: dis_dropout_keep_prob
}
_ = sess.run(discriminator.train_op, feed)
log.close()
def main():
# load embedding info
vocab_dict, vocab_size, vocab_list = load_emb_data(emb_dict_file)
# prepare data
pre_train_data_loader = Gen_Data_loader(BATCH_SIZE, vocab_dict)
pre_train_data_loader.create_batches(
[imdb_file_id, sst_pos_file_id, sst_neg_file_id])
gen_data_loader = Gen_Data_loader(BATCH_SIZE, vocab_dict)
gen_data_loader.create_batches([sst_pos_file_id, sst_neg_file_id])
dis_data_loader = Dis_Data_loader(BATCH_SIZE, vocab_dict, MAX_SEQ_LENGTH)
# build model
# num_emb, vocab_dict, batch_size, emb_dim, num_units, sequence_length
generator = Generator(vocab_size, vocab_dict, BATCH_SIZE, EMB_DIM,
HIDDEN_DIM, MAX_SEQ_LENGTH)
discriminator = Discriminator(sequence_length=MAX_SEQ_LENGTH,
num_classes=2,
vocab_size=vocab_size,
embedding_size=dis_embedding_dim,
filter_sizes=dis_filter_sizes,
num_filters=dis_num_filters,
l2_reg_lambda=dis_l2_reg_lambda)
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
sess.run(tf.global_variables_initializer())
log = open('save/experiment-log.txt', 'w')
buffer = 'Start pre-training generator...'
print(buffer)
log.write(buffer + '\n')
for epoch in range(150): #120
train_loss = pre_train_epoch(sess, generator, pre_train_data_loader)
if epoch % 5 == 0:
generate_samples(sess,
generator,
1,
eval_file,
vocab_list,
if_log=True,
epoch=epoch)
print(' pre-train epoch ', epoch, 'train_loss ', train_loss)
buffer = ' epoch:\t' + str(epoch) + '\tnll:\t' + str(
train_loss) + '\n'
log.write(buffer)
buffer = 'Start pre-training discriminator...'
print(buffer)
log.write(buffer)
for _ in range(10): # 10
generate_samples(sess, generator, 70, negative_file, vocab_list)
dis_data_loader.load_train_data([sst_pos_file_id, sst_neg_file_id],
[negative_file])
for _ in range(3):
dis_data_loader.reset_pointer()
for it in range(dis_data_loader.num_batch):
x_batch, y_batch = dis_data_loader.next_batch()
feed = {
discriminator.input_x: x_batch,
discriminator.input_y: y_batch,
discriminator.dropout_keep_prob: dis_dropout_keep_prob,
}
d_loss, d_acc, _ = sess.run([
discriminator.loss, discriminator.accuracy,
discriminator.train_op
], feed)
buffer = "discriminator loss %f acc %f" % (d_loss, d_acc)
print(buffer)
log.write(buffer + '\n')
print("Start Adversarial Training...")
log.write('adversarial training...')
for total_batch in range(TOTAL_BATCH):
# Train the generator
for it in range(2):
# print("1")
samples = generator.generate(sess)
samples = produce_samples(samples)
# print("2")
rewards = generator.get_reward(sess, samples, 16, discriminator)
# print("3")
a = str(samples[0])
b = str(rewards[0])
# rewards = change_rewards(rewards)
# c = str(rewards[0])
d = build_from_ids(samples[0], vocab_list)
buffer = "%s\n%s\n%s\n\n" % (d, a, b)
print(buffer)
log.write(buffer)
# print("4")
rewards_loss = generator.update_with_rewards(
sess, samples, rewards)
# print("5")
# good rewards
# good_samples = gen_data_loader.next_batch()
# rewards = np.array([[0.0001] * SEQ_LENGTH] * BATCH_SIZE)
# a = str(good_samples[0])
# b = str(rewards[0])
# buffer = "%s\n%s\n\n" % (a, b)
# print(buffer)
# log.write(buffer)
# rewards_loss = generator.update_with_rewards(sess, good_samples, rewards, START_TOKEN)
# little1 good reward
little1_samples = gen_data_loader.next_batch()
rewards = generator.get_reward(sess, little1_samples, 16,
discriminator)
a = str(little1_samples[0])
b = str(rewards[0])
buffer = "%s\n%s\n\n" % (a, b)
# print(buffer)
log.write(buffer)
rewards_loss = generator.update_with_rewards(
sess, little1_samples, rewards)
# generate_infer(sess, generator, epoch, vocab_list)
# Test
if total_batch % 5 == 0 or total_batch == TOTAL_BATCH - 1:
generate_samples(sess,
generator,
120,
eval_file,
vocab_list,
if_log=True)
generate_infer(sess, generator, total_batch, vocab_list)
# generate_samples(sess, generator, BATCH_SIZE, generated_num, eval_file)
# likelihood_data_loader.create_batches(eval_file)
# test_loss = target_loss(sess, target_lstm, likelihood_data_loader)
buffer = 'reward-train epoch %s train loss %s' % (
str(total_batch), str(rewards_loss))
print(buffer)
log.write(buffer + '\n')
generator.save_model(sess)
# Train the discriminator
begin = True
for _ in range(1):
generate_samples(sess, generator, 70, negative_file, vocab_list)
dis_data_loader.load_train_data([sst_pos_file_id, sst_neg_file_id],
[negative_file])
for _ in range(3):
dis_data_loader.reset_pointer()
for it in range(dis_data_loader.num_batch):
x_batch, y_batch = dis_data_loader.next_batch()
feed = {
discriminator.input_x: x_batch,
discriminator.input_y: y_batch,
discriminator.dropout_keep_prob: dis_dropout_keep_prob,
}
d_loss, d_acc, _ = sess.run([
discriminator.loss, discriminator.accuracy,
discriminator.train_op
], feed)
if (total_batch % 5 == 0
or total_batch == TOTAL_BATCH - 1) and begin:
buffer = "discriminator loss %f acc %f\n" % (d_loss,
d_acc)
print(buffer)
log.write(buffer)
begin = False
# pretrain
for _ in range(10):
train_loss = pre_train_epoch(sess, generator,
pre_train_data_loader)
def main():
random.seed(SEED)
np.random.seed(SEED)
if os.path.exists(DICO_PKL):
with open(DICO_PKL, 'rb') as f:
word_to_id, id_to_word = pickle.load(f)
else:
word_to_id, id_to_word = create_dico(DICO)
with open(DICO_PKL, 'wb') as f:
pickle.dump([word_to_id, id_to_word], f)
gen_data_loader = Gen_Data_loader(BATCH_SIZE, word_to_id)
dis_data_loader = Dis_Data_loader(BATCH_SIZE, word_to_id)
vocab_size = len(word_to_id)
assert START_TOKEN == word_to_id['sos']
generator = Generator(vocab_size, BATCH_SIZE, EMB_DIM, HIDDEN_DIM,
SEQ_LENGTH, START_TOKEN)
discriminator = BLEUCNN(SEQ_LENGTH, 2, EMB_DIM, generator)
mobilenet = MobileNet(BATCH_SIZE)
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
mobilenet.load_pretrained_weights(sess)
sess.run(tf.global_variables_initializer())
log = open('experiment-log.txt', 'w', encoding='utf-8')
# pre-train generator and discriminator
log.write('pre-training...\n')
print('Start pre-training discriminator...')
datas = create_data(DICO, word_to_id)
gen_data_loader.create_batches(CORPUS, IMAGE)
samples = []
for it in range(gen_data_loader.num_batch):
inp_batch, image_batch = gen_data_loader.next_batch()
feed_dict = {mobilenet.X: image_batch, mobilenet.is_training: False}
hidden_batch = sess.run(mobilenet.y_output, feed_dict=feed_dict)
samples.extend(generator.generate(sess, hidden_batch).tolist())
dis_data_loader.create_batches(random.sample(datas, 3000), samples)
for _ in range(PRE_EPOCH_NUM):
dis_data_loader.reset_pointer()
for it in range(dis_data_loader.num_batch):
x_batch, labels = dis_data_loader.next_batch()
feed = {
discriminator.input_x: x_batch,
discriminator.labels: labels,
discriminator.dropout_keep_prob: 0.75
}
_ = sess.run(discriminator.train_op, feed)
print('Start pre-training generator...')
for epoch in range(PRE_EPOCH_NUM):
supervised_g_losses = []
gen_data_loader.reset_pointer()
for it in range(gen_data_loader.num_batch):
inp_batch, image_batch = gen_data_loader.next_batch()
feed_dict = {
mobilenet.X: image_batch,
mobilenet.is_training: False
}
hidden_batch = sess.run(mobilenet.y_output, feed_dict=feed_dict)
_, g_loss = generator.pretrain_step(sess, inp_batch, hidden_batch)
supervised_g_losses.append(g_loss)
loss = np.mean(supervised_g_losses)
if epoch % 5 == 0:
print('pre-train epoch ', epoch, 'train_loss ', loss)
buffer = 'epoch:\t' + str(epoch) + '\ttrain_loss:\t' + str(
loss) + '\n'
log.write(buffer)
rollout = ROLLOUT(generator, 0.8)
print(
'#########################################################################'
)
print('Start REINFORCE Training...')
log.write('REINFORCE training...\n')
for total_batch in range(RL_EPOCH_NUM):
gen_data_loader.reset_pointer()
for it in range(gen_data_loader.num_batch):
ra = random.randint(0, 1)
inp_batch, image_batch = gen_data_loader.next_batch(shuffle=ra)
feed_dict = {
mobilenet.X: image_batch,
mobilenet.is_training: False
}
hidden_batch = sess.run(mobilenet.y_output, feed_dict=feed_dict)
samples = generator.generate(sess, hidden_batch)
rewards = rollout.get_reward(sess, samples, hidden_batch, 16,
discriminator)
feed = {
generator.x: inp_batch,
generator.rewards: rewards,
generator.hiddens: hidden_batch
}
_ = sess.run(generator.g_updates, feed_dict=feed)
# Test
if total_batch % 5 == 0 or total_batch == RL_EPOCH_NUM - 1:
mean_rewards = []
gen_data_loader.reset_pointer()
for it in range(gen_data_loader.num_batch):
inp_batch, image_batch = gen_data_loader.next_batch()
feed_dict = {
mobilenet.X: image_batch,
mobilenet.is_training: False
}
hidden_batch = sess.run(mobilenet.y_output,
feed_dict=feed_dict)
samples = generator.generate(sess, hidden_batch)
rewards = rollout.get_reward(sess, samples, hidden_batch, 16,
discriminator)
mean_rewards.append(np.mean(rewards[:, -1]))
reward = np.mean(mean_rewards)
buffer = 'epoch:\t' + str(total_batch) + '\treward:\t' + str(
reward) + '\n'
print('total_batch: ', total_batch, 'reward: ', reward)
log.write(buffer)
generator.save_weight(sess)
# Update roll-out parameters
rollout.update_params()
discriminator.update_embedding()
# Train the discriminator
samples = []
for it in range(gen_data_loader.num_batch):
inp_batch, image_batch = gen_data_loader.next_batch()
feed_dict = {
mobilenet.X: image_batch,
mobilenet.is_training: False
}
hidden_batch = sess.run(mobilenet.y_output, feed_dict=feed_dict)
samples.extend(generator.generate(sess, hidden_batch).tolist())
dis_data_loader.create_batches(random.sample(datas, 3000), samples)
dis_data_loader.reset_pointer()
for it in range(dis_data_loader.num_batch):
x_batch, labels = dis_data_loader.next_batch()
feed = {
discriminator.input_x: x_batch,
discriminator.labels: labels,
discriminator.dropout_keep_prob: 0.75
}
_ = sess.run(discriminator.train_op, feed)
# final test
gen_data_loader.reset_pointer()
_, image_batch = gen_data_loader.next_batch()
feed_dict = {mobilenet.X: image_batch, mobilenet.is_training: False}
hidden_batch = sess.run(mobilenet.y_output, feed_dict=feed_dict)
samples = generator.generate(sess, hidden_batch)
y = samples.tolist()
sams = []
for k, sam in enumerate(y):
sa = [id_to_word[i] for i in sam]
sa = ''.join(sa)
sams.append(sa)
for sam in sams:
log.write(sam + '\n')
log.close()