def run(self):
# load data
args_dict = self._default_configs()
args = dotdict(args_dict)
batchedData, maxTimeSteps, totalN = self.load_data(args,
mode=mode,
type=level)
model = model_fn(args, maxTimeSteps)
# count the num of params
num_params = count_params(model, mode='trainable')
all_num_params = count_params(model, mode='all')
model.config['trainable params'] = num_params
model.config['all params'] = all_num_params
print(model.config)
with tf.Session(graph=model.graph) as sess:
# restore from stored model
if keep == True:
ckpt = tf.train.get_checkpoint_state(savedir)
if ckpt and ckpt.model_checkpoint_path:
model.saver.restore(sess, ckpt.model_checkpoint_path)
print('Model restored from:' + savedir)
else:
print('Initializing')
sess.run(model.initial_op)
for epoch in range(num_epochs):
## training
start = time.time()
if mode == 'train':
print('Epoch', epoch + 1, '...')
batchErrors = np.zeros(len(batchedData))
batchRandIxs = np.random.permutation(len(batchedData))
for batch, batchOrigI in enumerate(batchRandIxs):
batchInputs, batchTargetSparse, batchSeqLengths = batchedData[
batchOrigI]
batchTargetIxs, batchTargetVals, batchTargetShape = batchTargetSparse
feedDict = {
model.inputX: batchInputs,
model.targetIxs: batchTargetIxs,
model.targetVals: batchTargetVals,
model.targetShape: batchTargetShape,
model.seqLengths: batchSeqLengths
}
if level == 'cha':
if mode == 'train':
_, l, pre, y, er = sess.run([
model.optimizer, model.loss, model.predictions,
model.targetY, model.errorRate
],
feed_dict=feedDict)
batchErrors[batch] = er
print(
'\n{} mode, total:{},batch:{}/{},epoch:{}/{},train loss={:.3f},mean train CER={:.3f}\n'
.format(level, totalN, batch + 1,
len(batchRandIxs), epoch + 1,
num_epochs, l, er / batch_size))
elif mode == 'test':
l, pre, y, er = sess.run([
model.loss, model.predictions, model.targetY,
model.errorRate
],
feed_dict=feedDict)
batchErrors[batch] = er
print(
'\n{} mode, total:{},batch:{}/{},test loss={:.3f},mean test CER={:.3f}\n'
.format(level, totalN, batch + 1,
len(batchRandIxs), l, er / batch_size))
elif level == 'phn':
if mode == 'train':
_, l, pre, y = sess.run([
model.optimizer, model.loss, model.predictions,
model.targetY
],
feed_dict=feedDict)
er = get_edit_distance([pre.values], [y.values],
True, level)
print(
'\n{} mode, total:{},batch:{}/{},epoch:{}/{},train loss={:.3f},mean train PER={:.3f}\n'
.format(level, totalN, batch + 1,
len(batchRandIxs), epoch + 1,
num_epochs, l, er))
batchErrors[batch] = er * len(batchSeqLengths)
elif mode == 'test':
l, pre, y = sess.run(
[model.loss, model.predictions, model.targetY],
feed_dict=feedDict)
er = get_edit_distance([pre.values], [y.values],
True, level)
print(
'\n{} mode, total:{},batch:{}/{},test loss={:.3f},mean test PER={:.3f}\n'
.format(level, totalN, batch + 1,
len(batchRandIxs), l, er))
batchErrors[batch] = er * len(batchSeqLengths)
# NOTE:
if er / batch_size == 1.0:
break
if batch % 30 == 0:
print('Truth:\n' + output_to_sequence(y, type=level))
print('Output:\n' +
output_to_sequence(pre, type=level))
if mode == 'train' and (
(epoch * len(batchRandIxs) + batch + 1) % 20 == 0 or
(epoch == num_epochs - 1
and batch == len(batchRandIxs) - 1)):
checkpoint_path = os.path.join(savedir, 'model.ckpt')
model.saver.save(sess,
checkpoint_path,
global_step=epoch)
print('Model has been saved in {}'.format(savedir))
end = time.time()
delta_time = end - start
print('Epoch ' + str(epoch + 1) + ' needs time:' +
str(delta_time) + ' s')
if mode == 'train':
if (epoch + 1) % 1 == 0:
checkpoint_path = os.path.join(savedir, 'model.ckpt')
model.saver.save(sess,
checkpoint_path,
global_step=epoch)
print('Model has been saved in {}'.format(savedir))
epochER = batchErrors.sum() / totalN
print('Epoch', epoch + 1, 'mean train error rate:',
epochER)
logging(model,
logfile,
epochER,
epoch,
delta_time,
mode='config')
logging(model,
logfile,
epochER,
epoch,
delta_time,
mode=mode)
if mode == 'test':
with open(os.path.join(resultdir, level + '_result.txt'),
'a') as result:
result.write(output_to_sequence(y, type=level) + '\n')
result.write(
output_to_sequence(pre, type=level) + '\n')
result.write('\n')
epochER = batchErrors.sum() / totalN
print(' test error rate:', epochER)
logging(model, logfile, epochER, mode=mode)
def run(self):
# load data
args_dict = self._default_configs()
args = dotdict(args_dict)
feature_dirs, label_dirs = get_data(datadir, level, train_dataset,
dev_dataset, test_dataset, mode)
batchedData, maxTimeSteps, totalN = self.load_data(
feature_dirs[0], label_dirs[0], mode, level)
model = model_fn(args, maxTimeSteps)
## shuffle feature_dir and label_dir by same order
FL_pair = list(zip(feature_dirs, label_dirs))
random.shuffle(FL_pair)
feature_dirs, label_dirs = zip(*FL_pair)
for feature_dir, label_dir in zip(feature_dirs, label_dirs):
id_dir = feature_dirs.index(feature_dir)
print('dir id:{}'.format(id_dir))
batchedData, maxTimeSteps, totalN = self.load_data(
feature_dir, label_dir, mode, level)
model = model_fn(args, maxTimeSteps)
num_params = count_params(model, mode='trainable')
all_num_params = count_params(model, mode='all')
model.config['trainable params'] = num_params
model.config['all params'] = all_num_params
print(model.config)
with tf.Session(graph=model.graph) as sess:
sess.run(model.initial_op)
# restore from stored model
if keep == True:
ckpt = tf.train.get_checkpoint_state(savedir)
if ckpt and ckpt.model_checkpoint_path:
model.saver.restore(sess, ckpt.model_checkpoint_path)
print('Model restored from:' + savedir)
else:
print('Initializing')
sess.run(model.initial_op)
for epoch in range(num_epochs):
## training
start = time.time()
if mode == 'train':
print('Epoch {} ...'.format(epoch + 1))
batchErrors = np.zeros(len(batchedData))
batchRandIxs = np.random.permutation(len(batchedData))
for batch, batchOrigI in enumerate(batchRandIxs):
batchInputs, batchTargetSparse, batchSeqLengths = batchedData[
batchOrigI]
batchTargetIxs, batchTargetVals, batchTargetShape = batchTargetSparse
feedDict = {
model.inputX: batchInputs,
model.targetIxs: batchTargetIxs,
model.targetVals: batchTargetVals,
model.targetShape: batchTargetShape,
model.seqLengths: batchSeqLengths
}
if level == 'cha':
if mode == 'train':
_, l, pre, y, er = sess.run([
model.optimizer, model.loss,
model.predictions, model.targetY,
model.errorRate
],
feed_dict=feedDict)
batchErrors[batch] = er
print(
'\n{} mode, total:{},subdir:{}/{},batch:{}/{},epoch:{}/{},train loss={:.3f},mean train CER={:.3f}\n'
.format(level, totalN, id_dir + 1,
len(feature_dirs), batch + 1,
len(batchRandIxs), epoch + 1,
num_epochs, l, er / batch_size))
elif mode == 'dev':
l, pre, y, er = sess.run([
model.loss, model.predictions,
model.targetY, model.errorRate
],
feed_dict=feedDict)
batchErrors[batch] = er
print(
'\n{} mode, total:{},subdir:{}/{},batch:{}/{},dev loss={:.3f},mean dev CER={:.3f}\n'
.format(level, totalN, id_dir + 1,
len(feature_dirs), batch + 1,
len(batchRandIxs), l,
er / batch_size))
elif mode == 'test':
l, pre, y, er = sess.run([
model.loss, model.predictions,
model.targetY, model.errorRate
],
feed_dict=feedDict)
batchErrors[batch] = er
print(
'\n{} mode, total:{},subdir:{}/{},batch:{}/{},test loss={:.3f},mean test CER={:.3f}\n'
.format(level, totalN, id_dir + 1,
len(feature_dirs), batch + 1,
len(batchRandIxs), l,
er / batch_size))
elif level == 'seq2seq':
raise ValueError('level %s is not supported now' %
str(level))
# NOTE:
if er / batch_size == 1.0:
break
if batch % 20 == 0:
print('Truth:\n' +
output_to_sequence(y, type=level))
print('Output:\n' +
output_to_sequence(pre, type=level))
if mode == 'train' and (
(epoch * len(batchRandIxs) + batch + 1) % 20 == 0
or (epoch == num_epochs - 1
and batch == len(batchRandIxs) - 1)):
checkpoint_path = os.path.join(
savedir, 'model.ckpt')
model.saver.save(sess,
checkpoint_path,
global_step=epoch)
print('Model has been saved in {}'.format(savedir))
end = time.time()
delta_time = end - start
print('Epoch ' + str(epoch + 1) + ' needs time:' +
str(delta_time) + ' s')
if mode == 'train':
if (epoch + 1) % 1 == 0:
checkpoint_path = os.path.join(
savedir, 'model.ckpt')
model.saver.save(sess,
checkpoint_path,
global_step=epoch)
print('Model has been saved in {}'.format(savedir))
epochER = batchErrors.sum() / totalN
print('Epoch', epoch + 1, 'mean train error rate:',
epochER)
logging(model,
logfile,
epochER,
epoch,
delta_time,
mode='config')
logging(model,
logfile,
epochER,
epoch,
delta_time,
mode=mode)
if mode == 'test' or mode == 'dev':
with open(
os.path.join(resultdir, level + '_result.txt'),
'a') as result:
result.write(
output_to_sequence(y, type=level) + '\n')
result.write(
output_to_sequence(pre, type=level) + '\n')
result.write('\n')
epochER = batchErrors.sum() / totalN
print(' test error rate:', epochER)
logging(model, logfile, epochER, mode=mode)