def run(self):
""" Runs ensemble model. """
vocab_source = Vocab(
filename=self._model_configs["infer"]["source_words_vocabulary"],
bpe_codes=self._model_configs["infer"]["source_bpecodes"])
vocab_target = Vocab(
filename=self._model_configs["infer"]["target_words_vocabulary"],
bpe_codes=self._model_configs["infer"]["target_bpecodes"])
estimator_spec = model_fn_ensemble(
self._model_dirs,
vocab_source,
vocab_target,
weight_scheme=self._weight_scheme,
inference_options=self._model_configs["infer"])
predict_op = estimator_spec.predictions
sess = self._build_default_session()
text_inputter = TextLineInputter(line_readers=[
LineReader(
data=p["features_file"],
preprocessing_fn=lambda x: vocab_source.convert_to_idlist(x))
for p in self._model_configs["infer_data"]
],
padding_id=vocab_source.pad_id,
batch_size=self.
_model_configs["infer"]["batch_size"])
sess.run(tf.global_variables_initializer())
tf.logging.info("Start inference.")
overall_start_time = time.time()
for feeding_data, param in zip(
text_inputter.make_feeding_data(estimator_spec.input_fields),
self._model_configs["infer_data"]):
tf.logging.info("Infer Source Features File: {}.".format(
param["features_file"]))
start_time = time.time()
infer(sess=sess,
prediction_op=predict_op,
infer_data=feeding_data,
output=param["output_file"],
vocab_source=vocab_source,
vocab_target=vocab_target,
delimiter=self._model_configs["infer"]["delimiter"],
output_attention=False,
to_char_level=self._model_configs["infer"]["char_level"],
verbose=True)
tf.logging.info("FINISHED {}. Elapsed Time: {}.".format(
param["features_file"], str(time.time() - start_time)))
if param["labels_file"] is not None:
bleu_score = multi_bleu_score_from_file(
hypothesis_file=param["output_file"],
references_files=param["labels_file"],
char_level=self._model_configs["infer"]["char_level"])
tf.logging.info("BLEU score (%s): %.2f" %
(param["features_file"], bleu_score))
tf.logging.info("Total Elapsed Time: %s" %
str(time.time() - overall_start_time))
def run(self):
"""Infers data files. """
# build datasets
vocab_source = Vocab(
filename=self._model_configs["infer"]["source_words_vocabulary"],
bpe_codes=self._model_configs["infer"]["source_bpecodes"],
reverse_seq=self._model_configs["train"]["features_r2l"])
vocab_target = Vocab(
filename=self._model_configs["infer"]["target_words_vocabulary"],
bpe_codes=self._model_configs["infer"]["target_bpecodes"],
reverse_seq=self._model_configs["train"]["labels_r2l"])
self._model_configs = update_infer_params(
self._model_configs,
beam_size=self._model_configs["infer"]["beam_size"],
maximum_labels_length=self._model_configs["infer"]
["maximum_labels_length"],
length_penalty=self._model_configs["infer"]["length_penalty"])
# build model
estimator_spec = model_fn(model_configs=self._model_configs,
mode=ModeKeys.INFER,
vocab_source=vocab_source,
vocab_target=vocab_target,
name=self._model_configs["problem_name"])
predict_op = estimator_spec.predictions
sess = self._build_default_session()
text_inputter = TextLineInputter(line_readers=[
LineReader(
data=p["features_file"],
preprocessing_fn=lambda x: vocab_source.convert_to_idlist(x))
for p in self._model_configs["infer_data"]
],
padding_id=vocab_source.pad_id,
batch_size=self.
_model_configs["infer"]["batch_size"])
# reload
checkpoint_path = tf.train.latest_checkpoint(
self._model_configs["model_dir"])
if checkpoint_path:
tf.logging.info("reloading models...")
saver = tf.train.Saver()
saver.restore(sess, checkpoint_path)
else:
raise OSError(
"File NOT Found. Fail to find checkpoint file from: {}".format(
self._model_configs["model_dir"]))
tf.logging.info("Start inference.")
overall_start_time = time.time()
for infer_data, param in zip(
text_inputter.make_feeding_data(
input_fields=estimator_spec.input_fields),
self._model_configs["infer_data"]):
tf.logging.info("Infer Source File: {}.".format(
param["features_file"]))
start_time = time.time()
infer(sess=sess,
prediction_op=predict_op,
infer_data=infer_data,
output=param["output_file"],
vocab_source=vocab_source,
vocab_target=vocab_target,
delimiter=self._model_configs["infer"]["delimiter"],
output_attention=param["output_attention"],
tokenize_output=self._model_configs["infer"]["char_level"],
verbose=True)
tf.logging.info("FINISHED {}. Elapsed Time: {}.".format(
param["features_file"], str(time.time() - start_time)))
if param["labels_file"] is not None:
bleu_score = multi_bleu_score_from_file(
hypothesis_file=param["output_file"],
references_files=param["labels_file"],
char_level=self._model_configs["infer"]["char_level"])
tf.logging.info("BLEU score (%s): %.2f" %
(param["features_file"], bleu_score))
tf.logging.info("Total Elapsed Time: %s" %
str(time.time() - overall_start_time))
def run(self):
""" Trains the model. """
# vocabulary
vocab_source = Vocab(
filename=self._model_configs["data"]["source_words_vocabulary"],
bpe_codes=self._model_configs["data"]["source_bpecodes"],
reverse_seq=self._model_configs["train"]["features_r2l"])
vocab_target = Vocab(
filename=self._model_configs["data"]["target_words_vocabulary"],
bpe_codes=self._model_configs["data"]["target_bpecodes"],
reverse_seq=self._model_configs["train"]["labels_r2l"])
eval_dataset = {
"vocab_source": vocab_source,
"vocab_target": vocab_target,
"features_file": self._model_configs["data"]["eval_features_file"],
"labels_file": self._model_configs["data"]["eval_labels_file"]
}
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
config.allow_soft_placement = True
estimator_spec = model_fn(model_configs=self._model_configs,
mode=ModeKeys.TRAIN,
vocab_source=vocab_source,
vocab_target=vocab_target,
name=self._model_configs["problem_name"])
train_ops = estimator_spec.train_ops
hooks = estimator_spec.training_hooks
# build training session
sess = tf.train.MonitoredSession(
session_creator=tf.train.ChiefSessionCreator(
scaffold=tf.train.Scaffold(),
checkpoint_dir=None,
master="",
config=config),
hooks=tuple(hooks) + tuple(
build_eval_metrics(self._model_configs,
eval_dataset,
model_name=estimator_spec.name)))
train_text_inputter = ParallelTextInputter(
LineReader(
data=self._model_configs["data"]["train_features_file"],
maximum_length=self._model_configs["train"]
["maximum_features_length"],
preprocessing_fn=lambda x: vocab_source.convert_to_idlist(x)),
LineReader(
data=self._model_configs["data"]["train_labels_file"],
maximum_length=self._model_configs["train"]
["maximum_labels_length"],
preprocessing_fn=lambda x: vocab_target.convert_to_idlist(x)),
vocab_source.pad_id,
vocab_target.pad_id,
batch_size=self._model_configs["train"]["batch_size"],
batch_tokens_size=self._model_configs["train"]
["batch_tokens_size"],
shuffle_every_epoch=self._model_configs["train"]
["shuffle_every_epoch"],
fill_full_batch=True,
bucketing=True)
train_data = train_text_inputter.make_feeding_data(
input_fields=estimator_spec.input_fields)
eidx = [0, 0]
update_cycle = [self._model_configs["train"]["update_cycle"], 1]
def step_fn(step_context):
step_context.session.run(train_ops["zeros_op"])
try:
while update_cycle[0] != update_cycle[1]:
data = train_data.next()
step_context.session.run(train_ops["collect_op"],
feed_dict=data["feed_dict"])
update_cycle[1] += 1
data = train_data.next()
update_cycle[1] = 1
return step_context.run_with_hooks(train_ops["train_op"],
feed_dict=data["feed_dict"])
except StopIteration:
eidx[1] += 1
while not sess.should_stop():
if eidx[0] != eidx[1]:
tf.logging.info("STARTUP Epoch {}".format(eidx[1]))
eidx[0] = eidx[1]
sess.run_step_fn(step_fn)
def run(self):
"""Infers data files. """
# build datasets
vocab_source = Vocab(
filename=self._model_configs["eval"]["source_words_vocabulary"],
bpe_codes=self._model_configs["eval"]["source_bpecodes"],
reverse_seq=self._model_configs["train"]["features_r2l"])
vocab_target = Vocab(
filename=self._model_configs["eval"]["target_words_vocabulary"],
bpe_codes=self._model_configs["eval"]["target_bpecodes"],
reverse_seq=self._model_configs["train"]["labels_r2l"])
# update evaluation model config
self._model_configs, metric_str = update_eval_metric(
self._model_configs, self._model_configs["eval"]["metric"])
tf.logging.info("Evaluating using {}".format(metric_str))
# build model
estimator_spec = model_fn(model_configs=self._model_configs, mode=ModeKeys.EVAL, vocab_source=vocab_source,
vocab_target=vocab_target, name=self._model_configs["problem_name"])
sess = self._build_default_session()
# reload
checkpoint_path = tf.train.latest_checkpoint(self._model_configs["model_dir"])
if checkpoint_path:
tf.logging.info("reloading models...")
saver = tf.train.Saver()
saver.restore(sess, checkpoint_path)
else:
raise OSError("File NOT Found. Fail to load checkpoint file from: {}"
.format(self._model_configs["model_dir"]))
tf.logging.info("Start evaluation.")
overall_start_time = time.time()
for data_param in self._model_configs["eval_data"]:
tf.logging.info("Evaluation Source File: {}.".format(data_param["features_file"]))
tf.logging.info("Evaluation Target File: {}.".format(data_param["labels_file"]))
eval_data = ParallelTextInputter(
LineReader(data=data_param["features_file"],
preprocessing_fn=lambda x: vocab_source.convert_to_idlist(x)),
LineReader(data=data_param["labels_file"],
preprocessing_fn=lambda x: vocab_target.convert_to_idlist(x)),
vocab_source.pad_id,
vocab_target.pad_id,
batch_size=self._model_configs["eval"]["batch_size"],
bucketing=False).make_feeding_data(
input_fields=estimator_spec.input_fields, in_memory=True)
start_time = time.time()
result = evaluate_with_attention(
sess=sess,
loss_op=estimator_spec.loss,
eval_data=eval_data,
vocab_source=vocab_source,
vocab_target=vocab_target,
attention_op=estimator_spec.predictions \
if data_param["output_attention"] else None,
output_filename_prefix=data_param["labels_file"].strip().split("/")[-1])
tf.logging.info("FINISHED {}. Elapsed Time: {}."
.format(data_param["features_file"], str(time.time() - start_time)))
tf.logging.info("Evaluation Score ({} on {}): {}"
.format(metric_str, data_param["features_file"], result))
tf.logging.info("Total Elapsed Time: %s" % str(time.time() - overall_start_time))
