def test_moredatanumber(self):
"""test for more data"""
print "----5----"
m1_score = compute_m1(
json_predictions_file="data/more_data_number.json",
reference_file="data/id_to_words.json")
self.assertEqual(m1_score['error'], 1)
def test_rightdata(self):
"""test for right data"""
print "----1----"
m1_score = compute_m1(
json_predictions_file="./data/val_cadidate_captions_json.json",
reference_file="./data/val_references_json.json")
self.assertEqual(m1_score['error'], 0)
def test_wrongname(self):
"""test for wrong_name"""
print "----6----"
m1_score = compute_m1(json_predictions_file="data/wrong_name.json",
reference_file="data/id_to_words.json")
self.assertEqual(m1_score['error'], 1)
def test_keyerror(self):
"""test for key error"""
print "----3----"
m1_score = compute_m1(json_predictions_file="data/key_error.json",
reference_file="data/id_to_words.json")
self.assertEqual(m1_score['error'], 1)
def test_nulldata(self):
"""test for null data"""
print "----2----"
m1_score = compute_m1(json_predictions_file="data/has_null_data.json",
reference_file="data/id_to_words.json")
self.assertEqual(m1_score['error'], 1)
def test_lessdatanumber(self):
"""test for less data"""
m1_score = compute_m1(
json_predictions_file="data/less_data_number.json",
reference_file="data/id_to_words.json")
self.assertEqual(m1_score['error'], 1)
def train(self):
# train/val dataset
# n_examples = self.data['captions'].shape[0]
# n_iters_per_epoch = int(np.ceil(float(n_examples)/self.batch_size))
# features = self.data['features']
# captions = self.data['captions']
# image_idxs = self.data['image_idxs']
# val_features = self.val_data['features']
val_features = self.val_data['features']
n_iters_val = int(
np.ceil(float(val_features.shape[0]) / self.batch_size))
# build graphs for training model and sampling captions
loss = self.model.build_model()
# tf.get_variable_scope().reuse_variables()
# _, _, generated_captions = self.model.build_sampler(max_len=20)
#
# # train op
# with tf.name_scope('optimizer'):
# optimizer = self.optimizer(learning_rate=self.learning_rate)
# grads = tf.gradients(loss, tf.trainable_variables())
# grads_and_vars = list(zip(grads, tf.trainable_variables()))
# train_op = optimizer.apply_gradients(grads_and_vars=grads_and_vars)
with tf.variable_scope(tf.get_variable_scope()) as scope:
with tf.name_scope('optimizer'):
tf.get_variable_scope().reuse_variables()
_, _, generated_captions = self.model.build_sampler(max_len=20)
optimizer = self.optimizer(learning_rate=self.learning_rate)
grads = tf.gradients(loss, tf.trainable_variables())
grads_and_vars = list(zip(grads, tf.trainable_variables()))
train_op = optimizer.apply_gradients(grads_and_vars=grads_and_vars)
# summary op
tf.summary.scalar('batch_loss', loss)
for var in tf.trainable_variables():
tf.summary.histogram(var.op.name, var)
for grad, var in grads_and_vars:
tf.summary.histogram(var.op.name + '/gradient', grad)
summary_op = tf.summary.merge_all()
print "The number of epoch: %d" % self.n_epochs
#print "Data size: %d" %n_examples
print "Batch size: %d" % self.batch_size
#print "Iterations per epoch: %d" %n_iters_per_epoch
config = tf.ConfigProto(allow_soft_placement=True)
#os.environ["CUDA_VISIBLE_DEVICES"] = '1'
#config.gpu_options.per_process_gpu_memory_fraction=0.9
config.gpu_options.allow_growth = True
with tf.Session(config=config) as sess:
init = tf.global_variables_initializer()
sess.run(init)
summary_writer = tf.summary.FileWriter(
self.log_path, graph=tf.get_default_graph())
saver = tf.train.Saver(max_to_keep=20)
if self.pretrained_model is not None:
print "Start training with pretrained Model.."
saver.restore(sess, self.pretrained_model)
prev_loss = -1
curr_loss = 0
start_t = time.time()
for e in range(self.n_epochs):
for part_num in range(5):
data = load_coco_data(data_path='./data',
split='train',
batch=part_num)
n_examples = data['captions'].shape[0]
n_iters_per_epoch = int(
np.ceil(float(n_examples) / self.batch_size))
features = data['features']
captions = data['captions']
image_idxs = data['image_idxs']
rand_idxs = np.random.permutation(n_examples)
captions = captions[rand_idxs]
image_idxs = image_idxs[rand_idxs]
for i in range(n_iters_per_epoch):
captions_batch = captions[i * self.batch_size:(i + 1) *
self.batch_size]
image_idxs_batch = image_idxs[i *
self.batch_size:(i + 1) *
self.batch_size]
features_batch = features[image_idxs_batch]
feed_dict = {
self.model.features: features_batch,
self.model.captions: captions_batch
}
_, l = sess.run([train_op, loss], feed_dict)
curr_loss += l
# write summary for tensorboard visualization
if i % 10 == 0:
summary = sess.run(summary_op, feed_dict)
summary_writer.add_summary(
summary, e * n_iters_per_epoch + i)
if (i + 1) % self.print_every == 0:
print "\nTrain loss at epoch %d & part %d & iteration %d (mini-batch): %.5f" % (
e + 1, part_num + 1, i + 1, l)
ground_truths = captions[image_idxs ==
image_idxs_batch[0]]
decoded = decode_captions(ground_truths,
self.model.idx_to_word)
for j, gt in enumerate(decoded):
print "Ground truth %d: %s" % (j + 1, gt)
gen_caps = sess.run(generated_captions, feed_dict)
decoded = decode_captions(gen_caps,
self.model.idx_to_word)
print "Generated caption: %s\n" % decoded[0]
del data
print "Previous epoch loss: ", prev_loss
print "Current epoch loss: ", curr_loss
print "Elapsed time: ", time.time() - start_t
prev_loss = curr_loss
curr_loss = 0
# print out BLEU scores and file write
if self.print_bleu:
all_gen_cap = np.ndarray((val_features.shape[0], 20))
for i in range(n_iters_val):
features_batch = val_features[i *
self.batch_size:(i + 1) *
self.batch_size]
feed_dict = {self.model.features: features_batch}
gen_cap = sess.run(generated_captions,
feed_dict=feed_dict)
all_gen_cap[i * self.batch_size:(i + 1) *
self.batch_size] = gen_cap
all_decoded = decode_captions(all_gen_cap,
self.model.idx_to_word)
captions2json.captions2json(
all_decoded, self.val_data['file_names'],
'./data/val/val_cadidate_captions_json.json')
compute_m1(
json_predictions_file=
'./data/val/val_cadidate_captions_json.json',
reference_file='./data/val/val_references_json.json')
# save model's parameters
if (e + 1) % self.save_every == 0:
saver.save(sess,
os.path.join(self.model_path, 'model.ckpt'),
global_step=e + 1)
print "model-%s saved." % (e + 1)
def test_rightdata(self):
"""test for right data"""
m1_score = compute_m1(
json_predictions_file="data/id_to_test_caption.json",
reference_file="data/id_to_words.json")
self.assertEqual(m1_score['error'], 0)
def test_wrongname(self):
"""test for wrong_name"""
m1_score = compute_m1(json_predictions_file="data/wrong_name.json",
reference_file="data/id_to_words.json")
self.assertEqual(m1_score['error'], 1)
def test_moredatanumber(self):
"""test for more data"""
m1_score = compute_m1(json_predictions_file="data/more_data_number.json",
reference_file="data/id_to_words.json")
self.assertEqual(m1_score['error'], 1)
def test_keyerror(self):
"""test for key error"""
m1_score = compute_m1(json_predictions_file="data/key_error.json",
reference_file="data/id_to_words.json")
self.assertEqual(m1_score['error'], 1)
def test_nulldata(self):
"""test for null data"""
m1_score = compute_m1(json_predictions_file="data/has_null_data.json",
reference_file="data/id_to_words.json")
self.assertEqual(m1_score['error'], 1)
def test_rightdata(self):
"""test for right data"""
m1_score = compute_m1(json_predictions_file="data/id_to_test_caption.json",
reference_file="data/id_to_words.json")
self.assertEqual(m1_score['error'], 0)