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run_esa.py
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"""Evaluate E-SA."""
import os
import argparse
import numpy as np
import tensorflow as tf
import pandas as pd
from pandas import Series, DataFrame
from model.esa import ESA
import config as cfg
import util.dataset as dt
def train(epoch, dataset, config, log_dir):
"""Train model for one epoch."""
model_config = config['model']
train_config = config['train']
sess_config = config['session']
with tf.Graph().as_default():
model = ESA(model_config)
model.build_inference()
model.build_loss(train_config['reg_coeff'])
model.build_train(train_config['learning_rate'])
with tf.Session(config=sess_config) as sess:
sum_dir = os.path.join(log_dir, 'summary')
# create event file for graph
if not os.path.exists(sum_dir):
summary_writer = tf.summary.FileWriter(sum_dir, sess.graph)
summary_writer.close()
summary_writer = tf.summary.FileWriter(sum_dir)
ckpt_dir = os.path.join(log_dir, 'checkpoint')
ckpt_path = tf.train.latest_checkpoint(ckpt_dir)
saver = tf.train.Saver()
if ckpt_path:
print('load checkpoint {}.'.format(ckpt_path))
saver.restore(sess, ckpt_path)
else:
print('no checkpoint.')
if not os.path.exists(ckpt_dir):
os.makedirs(ckpt_dir)
sess.run(tf.global_variables_initializer())
stats_dir = os.path.join(log_dir, 'stats')
stats_path = os.path.join(stats_dir, 'train.json')
if os.path.exists(stats_path):
print('load stats file {}.'.format(stats_path))
stats = pd.read_json(stats_path, 'records')
else:
print('no stats file.')
if not os.path.exists(stats_dir):
os.makedirs(stats_dir)
stats = pd.DataFrame(columns=['epoch', 'loss', 'acc'])
# train iterate over batch
batch_idx = 0
total_loss = 0
total_acc = 0
batch_total = np.sum(dataset.train_batch_total)
while dataset.has_train_batch:
vgg, c3d, question, answer = dataset.get_train_batch()
feed_dict = {
model.video_feature: np.add(vgg, c3d) / 2,
model.question_encode: question,
model.answer_encode: answer
}
_, loss, acc = sess.run(
[model.train, model.loss, model.acc], feed_dict)
total_loss += loss
total_acc += acc
if batch_idx % 100 == 0:
print('[TRAIN] epoch {}, batch {}/{}, loss {:.5f}, acc {:.5f}.'.format(
epoch, batch_idx, batch_total, loss, acc))
batch_idx += 1
loss = total_loss / batch_total
acc = total_acc / batch_total
print('\n[TRAIN] epoch {}, loss {:.5f}, acc {:.5f}.\n'.format(
epoch, loss, acc))
summary = tf.Summary()
summary.value.add(tag='train/loss', simple_value=float(loss))
summary.value.add(tag='train/acc', simple_value=float(acc))
summary_writer.add_summary(summary, epoch)
record = Series([epoch, loss, acc], ['epoch', 'loss', 'acc'])
stats = stats.append(record, ignore_index=True)
saver.save(sess, os.path.join(ckpt_dir, 'model.ckpt'), epoch)
stats.to_json(stats_path, 'records')
dataset.reset_train()
return loss, acc
def val(epoch, dataset, config, log_dir):
"""Validate model."""
model_config = config['model']
sess_config = config['session']
answerset = pd.read_csv(
os.path.join(config['preprocess_dir'], 'answer_set.txt'), header=None)[0]
with tf.Graph().as_default():
model = ESA(model_config)
model.build_inference()
with tf.Session(config=sess_config) as sess:
sum_dir = os.path.join(log_dir, 'summary')
summary_writer = tf.summary.FileWriter(sum_dir)
ckpt_dir = os.path.join(log_dir, 'checkpoint')
save_path = tf.train.latest_checkpoint(ckpt_dir)
saver = tf.train.Saver()
if save_path:
print('load checkpoint {}.'.format(save_path))
saver.restore(sess, save_path)
else:
print('no checkpoint.')
exit()
stats_dir = os.path.join(log_dir, 'stats')
stats_path = os.path.join(stats_dir, 'val.json')
if os.path.exists(stats_path):
print('load stats file {}.'.format(stats_path))
stats = pd.read_json(stats_path, 'records')
else:
print('no stats file.')
if not os.path.exists(stats_dir):
os.makedirs(stats_dir)
stats = pd.DataFrame(columns=['epoch', 'acc'])
# val iterate over examples
correct = 0
while dataset.has_val_example:
vgg, c3d, question, answer = dataset.get_val_example()
feed_dict = {
model.video_feature: [np.add(vgg, c3d) / 2],
model.question_encode: [question],
}
prediction = sess.run(model.prediction, feed_dict=feed_dict)
prediction = prediction[0]
if answerset[prediction] == answer:
correct += 1
acc = correct / dataset.val_example_total
print('\n[VAL] epoch {}, acc {:.5f}.\n'.format(epoch, acc))
summary = tf.Summary()
summary.value.add(tag='val/acc', simple_value=float(acc))
summary_writer.add_summary(summary, epoch)
record = Series([epoch, acc], ['epoch', 'acc'])
stats = stats.append(record, ignore_index=True)
stats.to_json(stats_path, 'records')
dataset.reset_val()
return acc
def test(dataset, config, log_dir):
"""Test model, output prediction as json file."""
model_config = config['model']
sess_config = config['session']
answerset = pd.read_csv(
os.path.join(config['preprocess_dir'], 'answer_set.txt'), header=None)[0]
with tf.Graph().as_default():
model = ESA(model_config)
model.build_inference()
with tf.Session(config=sess_config) as sess:
ckpt_dir = os.path.join(log_dir, 'checkpoint')
save_path = tf.train.latest_checkpoint(ckpt_dir)
saver = tf.train.Saver()
if save_path:
print('load checkpoint {}.'.format(save_path))
saver.restore(sess, save_path)
else:
print('no checkpoint.')
exit()
# test iterate over examples
result = DataFrame(columns=['id', 'answer'])
correct = 0
while dataset.has_test_example:
vgg, c3d, question, answer, example_id = dataset.get_test_example()
feed_dict = {
model.video_feature: [np.add(vgg, c3d) / 2],
model.question_encode: [question],
}
prediction = sess.run(model.prediction, feed_dict=feed_dict)
prediction = prediction[0]
result = result.append(
{'id': example_id, 'answer': answerset[prediction]}, ignore_index=True)
if answerset[prediction] == answer:
correct += 1
result.to_json(os.path.join(
log_dir, 'prediction.json'), 'records')
acc = correct / dataset.test_example_total
print('\n[TEST] acc {:.5f}.\n'.format(acc))
dataset.reset_test()
return acc
def main():
"""Main script."""
parser = argparse.ArgumentParser()
parser.add_argument('--mode', required=True,
help='train/test')
parser.add_argument('--gpu', required=True,
help='gpu id')
parser.add_argument('--log', required=True,
help='log directory')
parser.add_argument('--dataset', required=True,
help='dataset name, msvd_qa/msrvtt_qa')
parser.add_argument('--config', required=True,
help='config id')
args = parser.parse_args()
config = cfg.get('esa', args.dataset, args.config, args.gpu)
if args.dataset == 'msvd_qa':
dataset = dt.MSVDQA(
config['train']['batch_size'], config['preprocess_dir'])
elif args.dataset == 'msrvtt_qa':
dataset = dt.MSRVTTQA(
config['train']['batch_size'], config['preprocess_dir'])
if args.mode == 'train':
best_val_acc = -1
val_acc = 0
not_improved = -1
for epoch in range(0, 30):
if val_acc > best_val_acc:
best_val_acc = val_acc
not_improved = 0
else:
not_improved += 1
if not_improved == 10:
print('early stopping.')
break
train(epoch, dataset, config, args.log)
val_acc = val(epoch, dataset, config, args.log)
elif args.mode == 'test':
print('start test.')
test(dataset, config, args.log)
if __name__ == '__main__':
main()