def train(self):
#- imports
print 'training...'
from time import time
import numpy as np
from functions import get_batch
x_train = self.loadData()
print '\n ** Data Shape:', np.shape(x_train), ' ** \n'
print 'data loaded...'
print 'epoch \t cost_g \t cost_d \t time'
for i in range(self.args.maxIter):
self.epoch += 1
t = time()
for j in range(self.args.k):
Z = self.pzFn(self.args.batchSize,
self.args.nz).astype(self.floatX)
#print 'Z'
X = get_batch(self.args.batchSize, x_train)
#print 'X'
cost_D = self.train_D(X, Z)
#print 'cost_D'
#Take another random sample...
Z = self.pzFn(self.args.batchSize,
self.args.nz).astype(self.floatX)
cost_G = self.train_G(Z)
print self.epoch, '\t', cost_G, '\t', cost_D, '\t', time() - t
self.error_g.append(cost_G)
self.error_d.append(cost_D)
#print 'sampled from pz:', self.args.pz.name
self.save()
accuracy = tf.reduce_mean(
tf.cast(tf.equal(tf.argmax(pred, 1), tf.argmax(y, 1)), tf.float32))
cost_save = []
accuracy_save = []
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
init = tf.global_variables_initializer()
with tf.Session(config=config) as sess:
sess.run(init)
step = 1
# Keep training until reach max iterations
while step * batch_size < training_iters:
# while step < 2:
batch_x, batch_y, index = func.get_batch(batch_size, data_x, data_y,
index)
# Run optimization op (backprop)
sess.run(opt, feed_dict={x: batch_x, y: batch_y, keep_prob: dropout})
if step % display_step == 0:
# Calculate batch loss and accuracy
cos, acc = sess.run([cost, accuracy],
feed_dict={
x: batch_x,
y: batch_y,
keep_prob: 1.
})
cost_save.append(cos)
accuracy_save.append(acc)
print("Iter " + str(step * batch_size) + ", Minibatch Loss= " +
"{:.6f}".format(cos) + "\nTraining Accuracy= " +
"{:.5f}".format(acc))
emb_vec = embd_vec/tf.sqrt(tf.reduce_sum(tf.square(embd_vec), 1, keep_dims=True))
validation_X = tf.nn.embedding_lookup(embd_vec, validation_indices)
cos_simi = tf.matmul(validation_X, tf.transpose(embd_vec))
end_time = time.time()
time_taken = end_time - start_time
print("Writing vocab to file took: %.2f" % time_taken)
hm_epochs = 200000
batch_index = 0
with tf.Session() as session:
session.run(tf.global_variables_initializer())
epoch_loss = 0
for epoch in range(1, hm_epochs+1):
log = ""
batch_index, batch = get_batch(batch_index, train_data, batch_size, context_word_count, window_size)
_, batch_loss = session.run([optimizer, loss], feed_dict={X:batch[:,0], Y:batch[:,1].reshape(-1,1)})
epoch_loss += batch_loss
if epoch == 1000 or epoch == 500:
log += "Loss at epoch %d is %.3f\n" %(epoch, epoch_loss / epoch)
elif epoch % 5000 == 0:
log += "Loss at epoch %d is %.3f\n" %(epoch, epoch_loss/epoch)
simi = cos_simi.eval()
for i in range(int(validation_X.shape[0])):
word = index_word[validation_set_indices[i]]
nearest = (-simi[i, :]).argsort()[1:2]
close_word = index_word[nearest[0]]
log+="%s is close to %s \n" % (word, close_word)
print(log)
with open(root_dir+"/logs.txt", "a") as myfile:
myfile.write(log)