def setUp(self):
super().setUp()
params = Params({
"model": {
"type": "simple_tagger",
"text_field_embedder": {
"token_embedders": {
"tokens": {
"type": "embedding",
"embedding_dim": 5
}
}
},
"encoder": {
"type": "lstm",
"input_size": 5,
"hidden_size": 7,
"num_layers": 2
},
},
"dataset_reader": {
"type": "sequence_tagging"
},
"train_data_path":
str(self.FIXTURES_ROOT / "data" / "sequence_tagging.tsv"),
"validation_data_path":
str(self.FIXTURES_ROOT / "data" / "sequence_tagging.tsv"),
"iterator": {
"type": "basic",
"batch_size": 2
},
"trainer": {
"cuda_device": -1,
"num_epochs": 2,
"optimizer": "adam"
},
})
all_datasets = datasets_from_params(params)
vocab = Vocabulary.from_params(
params.pop("vocabulary", {}),
instances=(instance for dataset in all_datasets.values()
for instance in dataset),
)
model = Model.from_params(vocab=vocab, params=params.pop("model"))
iterator = DataIterator.from_params(params.pop("iterator"))
iterator.index_with(vocab)
train_data = all_datasets["train"]
trainer_params = params.pop("trainer")
serialization_dir = os.path.join(self.TEST_DIR,
"test_search_learning_rate")
self.trainer = TrainerBase.from_params(
model=model,
serialization_dir=serialization_dir,
iterator=iterator,
train_data=train_data,
params=trainer_params,
validation_data=None,
validation_iterator=None,
)
def load_data_from_params(self, params: Params):
all_datasets = datasets_from_params(params)
datasets_for_vocab_creation = set(params.pop("datasets_for_vocab_creation", all_datasets))
for dataset in datasets_for_vocab_creation:
if dataset not in all_datasets:
raise ConfigurationError(f"invalid 'dataset_for_vocab_creation' {dataset}")
instances_for_vocab_creation = (
instance
for key, dataset in all_datasets.items()
for instance in dataset
if key in datasets_for_vocab_creation
)
self._instances_for_vocab_creation = instances_for_vocab_creation
self._datasets_for_vocab_creation = datasets_for_vocab_creation
if "train" in all_datasets.keys():
self._train_data = all_datasets["train"]
self._tr_instances = sum(1 for e in self._train_data) # This is horrible if lazy iterator (Iterable)
if "validation" in all_datasets.keys():
self._validation_data = all_datasets["validation"]
self._val_instances = sum(1 for e in self._validation_data) # This is horrible if lazy iterator (Iterable)
if "test" in all_datasets.keys():
self._test_data = all_datasets["test"]
self._test_instances = sum(1 for e in self._test_data) # This is horrible if lazy iterator (Iterable)
# If trying to evaluate on test set, make sure the dataset is loaded
if self._evaluate_on_test:
assert self._test_data is not None
# return instances_for_vocab_creation, datasets_for_vocab_creation, all_datasets
return instances_for_vocab_creation, datasets_for_vocab_creation
def make_vocab_from_params(params: Params, serialization_dir: str):
prepare_environment(params)
vocab_params = params.pop("vocabulary", {})
os.makedirs(serialization_dir, exist_ok=True)
vocab_dir = os.path.join(serialization_dir, "vocabulary")
if os.path.isdir(vocab_dir) and os.listdir(vocab_dir) is not None:
raise ConfigurationError("The 'vocabulary' directory in the provided "
"serialization directory is non-empty")
all_datasets = datasets_from_params(params)
datasets_for_vocab_creation = set(
params.pop("datasets_for_vocab_creation", all_datasets))
for dataset in datasets_for_vocab_creation:
if dataset not in all_datasets:
raise ConfigurationError(
f"invalid 'dataset_for_vocab_creation' {dataset}")
logger.info(
"From dataset instances, %s will be considered for vocabulary creation.",
", ".join(datasets_for_vocab_creation))
instances = [
instance for key, dataset in all_datasets.items()
for instance in dataset if key in datasets_for_vocab_creation
]
vocab = Vocabulary.from_params(vocab_params, instances)
logger.info(f"writing the vocabulary to {vocab_dir}.")
vocab.save_to_files(vocab_dir)
logger.info("done creating vocab")
def main(param_path, overrides):
params = Params.from_file(param_path, overrides)
all_datasets = training_util.datasets_from_params(params)
train_data = all_datasets['train']
validation_data = all_datasets.get('validation')
# test_data = all_datasets.get('test')
train_candidates = []
train_answers = []
for instance in train_data:
candidate = instance.fields['candidates'].array.tolist()
train_candidates += candidate
answer = candidate[instance.fields['answer'].label]
train_answers += [answer]
with open("analysis.train.candidates.json", "w") as fh:
json.dump(Counter(train_candidates), fh, indent=2)
with open("analysis.train.answers.json", "w") as fh:
json.dump(Counter(train_answers), fh, indent=2)
valid_candidates = []
valid_answers = []
for instance in validation_data:
candidate = instance.fields['candidates'].array.tolist()
valid_candidates += candidate
answer = candidate[instance.fields['answer'].label]
valid_answers += [answer]
with open("analysis.valid.candidates.json", "w") as fh:
json.dump(Counter(valid_candidates), fh, indent=2)
with open("analysis.valid.answers.json", "w") as fh:
json.dump(Counter(valid_answers), fh, indent=2)
def evaluate_from_file(archive_path,
model_path,
overrides=None,
eval_suffix='',
device=0):
if archive_path.endswith('gz'):
archive = load_archive(archive_path, device, overrides)
config = archive.config
prepare_environment(config)
model = archive.model
serialization_dir = os.path.dirname(archive_path)
elif archive_path.endswith('yaml'):
config = yaml_to_params(archive_path, overrides)
prepare_environment(config)
config_dir = os.path.dirname(archive_path)
serialization_dir = os.path.join(config_dir, 'serialization')
all_datasets = datasets_from_params(config)
# We want to create the vocab from scratch since it might be of a
# different type. Vocabulary.from_files will always create the base
# Vocabulary instance.
# if os.path.exists(os.path.join(serialization_dir, "vocabulary")):
# vocab_path = os.path.join(serialization_dir, "vocabulary")
# vocab = Vocabulary.from_files(vocab_path)
vocab = Vocabulary.from_params(config.pop('vocabulary'))
model = Model.from_params(vocab=vocab, params=config.pop('model'))
if model_path:
best_model_state = torch.load(model_path)
model.load_state_dict(best_model_state)
instances = all_datasets.get('test')
iterator = DataIterator.from_params(config.pop("validation_iterator"))
iterator.index_with(model.vocab)
model.eval().to(device)
model.evaluate_mode = True
metrics = evaluate(model,
instances,
iterator,
device,
serialization_dir,
eval_suffix,
batch_weight_key='')
logger.info("Finished evaluating.")
logger.info("Metrics:")
for key, metric in metrics.items():
logger.info("%s: %s", key, metric)
output_file = os.path.join(serialization_dir,
f"evaluate-metrics{eval_suffix}.json")
if output_file:
with open(output_file, "w") as file:
json.dump(metrics, file, indent=4)
return metrics
def dry_run_from_params(params: Params, serialization_dir: str) -> None:
prepare_environment(params)
vocab_params = params.pop("vocabulary", {})
os.makedirs(serialization_dir, exist_ok=True)
vocab_dir = os.path.join(serialization_dir, "vocabulary")
if os.path.isdir(vocab_dir) and os.listdir(vocab_dir) is not None:
raise ConfigurationError("The 'vocabulary' directory in the provided "
"serialization directory is non-empty")
all_datasets = datasets_from_params(params)
datasets_for_vocab_creation = set(
params.pop("datasets_for_vocab_creation", all_datasets))
for dataset in datasets_for_vocab_creation:
if dataset not in all_datasets:
raise ConfigurationError(
f"invalid 'dataset_for_vocab_creation' {dataset}")
logger.info(
"From dataset instances, %s will be considered for vocabulary creation.",
", ".join(datasets_for_vocab_creation))
instances = [
instance for key, dataset in all_datasets.items()
for instance in dataset if key in datasets_for_vocab_creation
]
vocab = Vocabulary.from_params(vocab_params, instances)
dataset = Batch(instances)
dataset.index_instances(vocab)
dataset.print_statistics()
vocab.print_statistics()
logger.info(f"writing the vocabulary to {vocab_dir}.")
vocab.save_to_files(vocab_dir)
model = Model.from_params(vocab=vocab, params=params.pop('model'))
trainer_params = params.pop("trainer")
no_grad_regexes = trainer_params.pop("no_grad", ())
for name, parameter in model.named_parameters():
if any(re.search(regex, name) for regex in no_grad_regexes):
parameter.requires_grad_(False)
frozen_parameter_names, tunable_parameter_names = \
get_frozen_and_tunable_parameter_names(model)
stdout_handler = prepare_global_logging(serialization_dir, False)
logger.info("Following parameters are Frozen (without gradient):")
for name in frozen_parameter_names:
logger.info(name)
logger.info("Following parameters are Tunable (with gradient):")
for name in tunable_parameter_names:
logger.info(name)
cleanup_global_logging(stdout_handler)
def from_params(params: Params, serialization_dir: str, recover: bool = False) -> 'TrainerPieces':
all_datasets = training_util.datasets_from_params(params)
datasets_for_vocab_creation = set(params.pop("datasets_for_vocab_creation", all_datasets))
for dataset in datasets_for_vocab_creation:
if dataset not in all_datasets:
raise ConfigurationError(f"invalid 'dataset_for_vocab_creation' {dataset}")
logger.info("From dataset instances, %s will be considered for vocabulary creation.",
", ".join(datasets_for_vocab_creation))
if recover and os.path.exists(os.path.join(serialization_dir, "vocabulary")):
vocab = Vocabulary.from_files(os.path.join(serialization_dir, "vocabulary"))
params.pop("vocabulary", {})
else:
vocab = Vocabulary.from_params(
params.pop("vocabulary", {}),
(instance for key, dataset in all_datasets.items()
for instance in dataset
if key in datasets_for_vocab_creation)
)
model = Model.from_params(vocab=vocab, params=params.pop('model'))
# Initializing the model can have side effect of expanding the vocabulary
vocab.save_to_files(os.path.join(serialization_dir, "vocabulary"))
iterator = DataIterator.from_params(params.pop("iterator"))
iterator.index_with(model.vocab)
validation_iterator_params = params.pop("validation_iterator", None)
if validation_iterator_params:
validation_iterator = DataIterator.from_params(validation_iterator_params)
validation_iterator.index_with(model.vocab)
else:
validation_iterator = None
train_data = all_datasets['train']
validation_data = all_datasets.get('validation')
test_data = all_datasets.get('test')
trainer_params = params.pop("trainer")
no_grad_regexes = trainer_params.pop("no_grad", ())
for name, parameter in model.named_parameters():
if any(re.search(regex, name) for regex in no_grad_regexes):
parameter.requires_grad_(False)
frozen_parameter_names, tunable_parameter_names = \
get_frozen_and_tunable_parameter_names(model)
logger.info("Following parameters are Frozen (without gradient):")
for name in frozen_parameter_names:
logger.info(name)
logger.info("Following parameters are Tunable (with gradient):")
for name in tunable_parameter_names:
logger.info(name)
return TrainerPieces(model, iterator,
train_data, validation_data, test_data,
validation_iterator, trainer_params)
def test_datasets_from_params_uses_caching_correctly_with_hashed_params(
self):
# We'll rely on the dataset reader tests to be sure of the functionality of this caching;
# we're just checking here that things get hooked up correctly to the right spots.
_ = util.datasets_from_params(self.params, self.cache_directory)
cache_prefix = util._dataset_reader_param_hash(Params({"type":
"snli"}))
expected_cache_file = f"{self.cache_directory}/{cache_prefix}/{flatten_filename(self.snli_file)}"
assert os.path.exists(expected_cache_file)
def test_datasets_from_params_uses_caching_correctly_in_simplest_case(
self):
# We'll rely on the dataset reader tests to be sure of the functionality of this caching;
# we're just checking here that things get hooked up correctly to the right spots.
cache_prefix = "prefix"
_ = util.datasets_from_params(self.params.duplicate(),
self.cache_directory, cache_prefix)
expected_cache_file = f"{self.cache_directory}/{cache_prefix}/{flatten_filename(self.snli_file)}"
expected_param_file = f"{self.cache_directory}/{cache_prefix}/params.json"
assert os.path.exists(expected_cache_file)
assert os.path.exists(expected_param_file)
with open(expected_param_file, 'r') as param_file:
saved_params = json.load(param_file)
assert saved_params == self.params.pop('dataset_reader').as_dict(
quiet=True)
def test_from_params2():
params = Params({
"dataset_reader": {
"type": "openke-rank-validation-dataset",
"dataset_name": 'FB15K237',
"all_datadir":
'/Users/dhruv/UnsyncedDocuments/IESL/kb_completion/datasets/.data/test',
"file_reader": {
"type": "rank-val-id-reader"
}
},
"train_data_path": None
})
dataset = util.datasets_from_params(params.duplicate())
for i, instance in enumerate(dataset['train']):
print(i, instance)
def get_model_from_file(archive_path,
model_path,
overrides=None,
eval_suffix='',
device=0):
if archive_path.endswith('gz'):
archive = load_archive(archive_path, device, overrides)
config = archive.config
prepare_environment(config)
model = archive.model
serialization_dir = os.path.dirname(archive_path)
elif archive_path.endswith('yaml'):
config = yaml_to_params(archive_path, overrides)
prepare_environment(config)
config_dir = os.path.dirname(archive_path)
serialization_dir = os.path.join(config_dir, 'serialization')
all_datasets = datasets_from_params(config)
# We want to create the vocab from scratch since it might be of a
# different type. Vocabulary.from_files will always create the base
# Vocabulary instance.
if os.path.exists(os.path.join(serialization_dir, "vocabulary")):
vocab_path = os.path.join(serialization_dir, "vocabulary")
vocab = Vocabulary.from_files(vocab_path)
vocab = Vocabulary.from_params(config.pop('vocabulary'))
model = Model.from_params(vocab=vocab, params=config.pop('model'))
if model_path:
best_model_state = torch.load(model_path)
model.load_state_dict(best_model_state)
# instances = all_datasets.get('test')
iterator = DataIterator.from_params(config.pop("validation_iterator"))
iterator.index_with(model.vocab)
model.eval().to(device)
model.evaluate_mode = True
return model
def test_from_params():
params = Params({
"dataset_reader": {
"type":
"classification-validation-dataset",
"dataset_name":
'WNTC',
"all_datadir":
'/Users/dhruv/UnsyncedDocuments/IESL/kb_completion/datasets/.data/test',
},
"train_data_path": None
})
dataset = util.datasets_from_params(params.duplicate())
print(dataset)
for instance in dataset['train']:
print(instance)
for name, field in instance.items():
if isinstance(field, ArrayField):
print(name, field.array)
def test_from_params1():
params = Params({
"dataset_reader": {
"type": "openke-dataset-negative-sampling",
"dataset_name": 'FB15K237',
"all_datadir":
'/Users/dhruv/UnsyncedDocuments/IESL/kb_completion/datasets/.data/test',
"mode": "train",
"number_negative_samples": 2
},
"train_data_path": None
})
dataset = util.datasets_from_params(params.duplicate())
print(dataset)
for instance in dataset['train']:
print(instance)
for name, field in instance.items():
if isinstance(field, ArrayField):
print(name, field.array)
def test_from_params():
params = Params({
"dataset_reader": {
"type":
'openke-single-relation-parent-childrem-validation-dataset',
"dataset_name":
'WNTC',
"all_datadir":
'/Users/dhruv/UnsyncedDocuments/IESL/kb_completion/datasets/.data/test',
"validation_file":
'entity2id.txt',
"all_true_files": ['all_true.txt']
},
"train_data_path": None
})
dataset = util.datasets_from_params(params.duplicate())
for i, instance in enumerate(dataset['train']):
print(i, instance)
for name, field in instance.items():
if isinstance(field, ArrayField):
print(name, field.array)
def from_params(cls,
params: Params,
serialization_dir: str,
recover: bool = False,
cache_directory: str = None,
cache_prefix: str = None) -> 'PtDistTrainer':
all_datasets = training_util.datasets_from_params(
params, cache_directory, cache_prefix)
vocab = Vocabulary.from_files(params.vocabulary.directory_path)
model = Model.from_params(vocab=vocab, params=params.pop('model'))
model.extend_embedder_vocab()
if is_master_rank():
vocab.save_to_files(os.path.join(serialization_dir, "vocabulary"))
train_data = all_datasets['train']
validation_data = all_datasets.get('validation')
batch_size = params.iterator.batch_size
trainer_params = params.pop("trainer")
keys = [key for key in params]
for key in keys:
params.pop(key)
params = trainer_params
validation_metric = params.pop("validation_metric", "-loss")
shuffle = params.pop_bool("shuffle", True)
num_epochs = params.pop_int("num_epochs", 20)
cuda_device = parse_cuda_device(params.pop("cuda_device", -1))
grad_clipping = params.pop_float("grad_clipping", None)
lr_scheduler_params = params.pop("learning_rate_scheduler", None)
pretrain_file = params.pop("pretrain_file", None)
no_grad_regexes = params.pop("no_grad", ())
for name, parameter in model.named_parameters():
if any(re.search(regex, name) for regex in no_grad_regexes):
parameter.requires_grad_(False)
frozen_parameter_names, tunable_parameter_names = \
get_frozen_and_tunable_parameter_names(model)
logger.info("Following parameters are Frozen (without gradient):")
for name in frozen_parameter_names:
logger.info(name)
logger.info("Following parameters are Tunable (with gradient):")
for name in tunable_parameter_names:
logger.info(name)
model = model.cuda(dist.get_rank())
if pretrain_file:
model_state = torch.load(pretrain_file,
map_location=nn_util.device_mapping(
dist.get_rank()))
model.load_state_dict(model_state)
parameters = [[n, p] for n, p in model.named_parameters()
if p.requires_grad]
# print([n for n, p in model.named_parameters() if p.requires_grad])
optimizer = Optimizer.from_params(parameters, params.pop("optimizer"))
if lr_scheduler_params:
lr_scheduler = LearningRateScheduler.from_params(
optimizer, lr_scheduler_params)
else:
lr_scheduler = None
num_serialized_models_to_keep = params.pop_int(
"num_serialized_models_to_keep", 20)
checkpointer = Checkpointer(
serialization_dir=serialization_dir,
num_serialized_models_to_keep=num_serialized_models_to_keep,
keep_serialized_model_every_num_seconds=None)
return cls(model,
optimizer,
train_data,
validation_data,
batch_size=batch_size,
validation_metric=validation_metric,
shuffle=shuffle,
num_epochs=num_epochs,
serialization_dir=serialization_dir,
cuda_device=cuda_device,
grad_clipping=grad_clipping,
learning_rate_scheduler=lr_scheduler,
checkpointer=checkpointer)
def fine_tune_model(model: Model,
params: Params,
serialization_dir: str,
extend_vocab: bool = False,
file_friendly_logging: bool = False,
batch_weight_key: str = "") -> Model:
"""
Fine tunes the given model, using a set of parameters that is largely identical to those used
for :func:`~allennlp.commands.train.train_model`, except that the ``model`` section is ignored,
if it is present (as we are already given a ``Model`` here).
The main difference between the logic done here and the logic done in ``train_model`` is that
here we do not worry about vocabulary construction or creating the model object. Everything
else is the same.
Parameters
----------
archive : ``Archive``
A saved model archive that is the result of running the ``train`` command.
train_data_path : ``str``
Path to the training data to use for fine-tuning.
serialization_dir : ``str``
The directory in which to save results and logs.
validation_data_path : ``str``, optional
Path to the validation data to use while fine-tuning.
extend_vocab: ``bool``, optional (default=False)
If ``True``, we use the new instances to extend your vocabulary.
file_friendly_logging : ``bool``, optional (default=False)
If ``True``, we add newlines to tqdm output, even on an interactive terminal, and we slow
down tqdm's output to only once every 10 seconds.
"""
prepare_environment(params)
if os.path.exists(serialization_dir) and os.listdir(serialization_dir):
raise ConfigurationError(
f"Serialization directory ({serialization_dir}) "
f"already exists and is not empty.")
os.makedirs(serialization_dir, exist_ok=True)
prepare_global_logging(serialization_dir, file_friendly_logging)
serialization_params = deepcopy(params).as_dict(quiet=True)
with open(os.path.join(serialization_dir, CONFIG_NAME), "w") as param_file:
json.dump(serialization_params, param_file, indent=4)
if params.pop('model', None):
logger.warning(
"You passed parameters for the model in your configuration file, but we "
"are ignoring them, using instead the model parameters in the archive."
)
vocabulary_params = params.pop('vocabulary', {})
if vocabulary_params.get('directory_path', None):
logger.warning(
"You passed `directory_path` in parameters for the vocabulary in "
"your configuration file, but it will be ignored. ")
all_datasets = datasets_from_params(params)
vocab = model.vocab
if extend_vocab:
datasets_for_vocab_creation = set(
params.pop("datasets_for_vocab_creation", all_datasets))
for dataset in datasets_for_vocab_creation:
if dataset not in all_datasets:
raise ConfigurationError(
f"invalid 'dataset_for_vocab_creation' {dataset}")
logger.info("Extending model vocabulary using %s data.",
", ".join(datasets_for_vocab_creation))
vocab.extend_from_instances(
vocabulary_params,
(instance for key, dataset in all_datasets.items()
for instance in dataset if key in datasets_for_vocab_creation))
vocab.save_to_files(os.path.join(serialization_dir, "vocabulary"))
iterator = DataIterator.from_params(params.pop("iterator"))
iterator.index_with(model.vocab)
validation_iterator_params = params.pop("validation_iterator", None)
if validation_iterator_params:
validation_iterator = DataIterator.from_params(
validation_iterator_params)
validation_iterator.index_with(vocab)
else:
validation_iterator = None
train_data = all_datasets['train']
validation_data = all_datasets.get('validation')
test_data = all_datasets.get('test')
trainer_params = params.pop("trainer")
no_grad_regexes = trainer_params.pop("no_grad", ())
for name, parameter in model.named_parameters():
if any(re.search(regex, name) for regex in no_grad_regexes):
parameter.requires_grad_(False)
frozen_parameter_names, tunable_parameter_names = \
get_frozen_and_tunable_parameter_names(model)
logger.info("Following parameters are Frozen (without gradient):")
for name in frozen_parameter_names:
logger.info(name)
logger.info("Following parameters are Tunable (with gradient):")
for name in tunable_parameter_names:
logger.info(name)
trainer_type = trainer_params.pop("type", "default")
if trainer_type == "default":
trainer = Trainer.from_params(model=model,
serialization_dir=serialization_dir,
iterator=iterator,
train_data=train_data,
validation_data=validation_data,
params=trainer_params,
validation_iterator=validation_iterator)
else:
raise ConfigurationError(
"currently fine-tune only works with the default Trainer")
evaluate_on_test = params.pop_bool("evaluate_on_test", False)
params.assert_empty('base train command')
try:
metrics = trainer.train()
except KeyboardInterrupt:
# if we have completed an epoch, try to create a model archive.
if os.path.exists(os.path.join(serialization_dir, _DEFAULT_WEIGHTS)):
logging.info(
"Fine-tuning interrupted by the user. Attempting to create "
"a model archive using the current best epoch weights.")
archive_model(serialization_dir,
files_to_archive=params.files_to_archive)
raise
# Evaluate
if test_data and evaluate_on_test:
logger.info(
"The model will be evaluated using the best epoch weights.")
test_metrics = evaluate(
model,
test_data,
validation_iterator or iterator,
cuda_device=trainer._cuda_devices[0], # pylint: disable=protected-access,
batch_weight_key=batch_weight_key)
for key, value in test_metrics.items():
metrics["test_" + key] = value
elif test_data:
logger.info(
"To evaluate on the test set after training, pass the "
"'evaluate_on_test' flag, or use the 'allennlp evaluate' command.")
# Now tar up results
archive_model(serialization_dir, files_to_archive=params.files_to_archive)
metrics_json = json.dumps(metrics, indent=2)
with open(os.path.join(serialization_dir, "metrics.json"),
"w") as metrics_file:
metrics_file.write(metrics_json)
logger.info("Metrics: %s", metrics_json)
return model
def find_learning_rate_model(
params: Params,
serialization_dir: str,
start_lr: float = 1e-5,
end_lr: float = 10,
num_batches: int = 100,
linear_steps: bool = False,
stopping_factor: float = None,
force: bool = False,
) -> None:
"""
Runs learning rate search for given `num_batches` and saves the results in ``serialization_dir``
# Parameters
params : `Params`
A parameter object specifying an AllenNLP Experiment.
serialization_dir : `str`
The directory in which to save results.
start_lr : `float`
Learning rate to start the search.
end_lr : `float`
Learning rate upto which search is done.
num_batches : `int`
Number of mini-batches to run Learning rate finder.
linear_steps : `bool`
Increase learning rate linearly if False exponentially.
stopping_factor : `float`
Stop the search when the current loss exceeds the best loss recorded by
multiple of stopping factor. If `None` search proceeds till the `end_lr`
force : `bool`
If True and the serialization directory already exists, everything in it will
be removed prior to finding the learning rate.
"""
create_serialization_dir(params,
serialization_dir,
recover=False,
force=force)
prepare_environment(params)
cuda_device = params.params.get("trainer").get("cuda_device", -1)
check_for_gpu(cuda_device)
distributed_params = params.params.get("distributed")
# See https://github.com/allenai/allennlp/issues/3658
assert not distributed_params, "find-lr is not compatible with DistributedDataParallel."
all_datasets = datasets_from_params(params)
datasets_for_vocab_creation = set(
params.pop("datasets_for_vocab_creation", all_datasets))
for dataset in datasets_for_vocab_creation:
if dataset not in all_datasets:
raise ConfigurationError(
f"invalid 'dataset_for_vocab_creation' {dataset}")
logger.info(
"From dataset instances, %s will be considered for vocabulary creation.",
", ".join(datasets_for_vocab_creation),
)
vocab = Vocabulary.from_params(
params.pop("vocabulary", {}),
instances=(instance for key, dataset in all_datasets.items()
for instance in dataset
if key in datasets_for_vocab_creation),
)
train_data = all_datasets["train"]
train_data.index_with(vocab)
model = Model.from_params(vocab=vocab, params=params.pop("model"))
data_loader = DataLoader.from_params(dataset=train_data,
params=params.pop("data_loader"))
trainer_params = params.pop("trainer")
no_grad_regexes = trainer_params.pop("no_grad", ())
for name, parameter in model.named_parameters():
if any(re.search(regex, name) for regex in no_grad_regexes):
parameter.requires_grad_(False)
trainer_choice = trainer_params.pop("type", "gradient_descent")
if trainer_choice != "gradient_descent":
raise ConfigurationError(
"currently find-learning-rate only works with the GradientDescentTrainer"
)
trainer: GradientDescentTrainer = Trainer.from_params( # type: ignore
model=model,
serialization_dir=serialization_dir,
data_loader=data_loader,
params=trainer_params,
)
logger.info(
f"Starting learning rate search from {start_lr} to {end_lr} in {num_batches} iterations."
)
learning_rates, losses = search_learning_rate(
trainer,
start_lr=start_lr,
end_lr=end_lr,
num_batches=num_batches,
linear_steps=linear_steps,
stopping_factor=stopping_factor,
)
logger.info("Finished learning rate search.")
losses = _smooth(losses, 0.98)
_save_plot(learning_rates, losses,
os.path.join(serialization_dir, "lr-losses.png"))
def fine_tune_model(model: Model,
params: Params,
serialization_dir: str,
extend_vocab: bool = False,
file_friendly_logging: bool = False,
batch_weight_key: str = "",
embedding_sources_mapping: Dict[str, str] = None,
in_fold = None,
num_folds = None,
ewc_weight=None) -> Model:
"""
Fine tunes the given model, using a set of parameters that is largely identical to those used
for :func:`~allennlp.commands.train.train_model`, except that the ``model`` section is ignored,
if it is present (as we are already given a ``Model`` here).
The main difference between the logic done here and the logic done in ``train_model`` is that
here we do not worry about vocabulary construction or creating the model object. Everything
else is the same.
Parameters
----------
model : ``Model``
A model to fine tune.
params : ``Params``
A parameter object specifying an AllenNLP Experiment
serialization_dir : ``str``
The directory in which to save results and logs.
extend_vocab: ``bool``, optional (default=False)
If ``True``, we use the new instances to extend your vocabulary.
file_friendly_logging : ``bool``, optional (default=False)
If ``True``, we add newlines to tqdm output, even on an interactive terminal, and we slow
down tqdm's output to only once every 10 seconds.
batch_weight_key : ``str``, optional (default="")
If non-empty, name of metric used to weight the loss on a per-batch basis.
embedding_sources_mapping: ``Dict[str, str]``, optional (default=None)
mapping from model paths to the pretrained embedding filepaths
used during fine-tuning.
"""
prepare_environment(params)
if os.path.exists(serialization_dir) and os.listdir(serialization_dir):
raise ConfigurationError(f"Serialization directory ({serialization_dir}) "
f"already exists and is not empty.")
os.makedirs(serialization_dir, exist_ok=True)
prepare_global_logging(serialization_dir, file_friendly_logging)
serialization_params = deepcopy(params).as_dict(quiet=True)
with open(os.path.join(serialization_dir, CONFIG_NAME), "w") as param_file:
json.dump(serialization_params, param_file, indent=4)
if params.pop('model', None):
logger.warning("You passed parameters for the model in your configuration file, but we "
"are ignoring them, using instead the model parameters in the archive.")
vocabulary_params = params.pop('vocabulary', {})
if vocabulary_params.get('directory_path', None):
logger.warning("You passed `directory_path` in parameters for the vocabulary in "
"your configuration file, but it will be ignored. ")
all_datasets = datasets_from_params(params)
vocab = model.vocab
if extend_vocab:
datasets_for_vocab_creation = set(params.pop("datasets_for_vocab_creation", all_datasets))
for dataset in datasets_for_vocab_creation:
if dataset not in all_datasets:
raise ConfigurationError(f"invalid 'dataset_for_vocab_creation' {dataset}")
logger.info("Extending model vocabulary using %s data.", ", ".join(datasets_for_vocab_creation))
vocab.extend_from_instances(vocabulary_params,
(instance for key, dataset in all_datasets.items()
for instance in dataset
if key in datasets_for_vocab_creation))
model.extend_embedder_vocab(embedding_sources_mapping)
trainer_params = params.pop("trainer")
no_grad_regexes = trainer_params.pop("no_grad", ())
for name, parameter in model.named_parameters():
if any(re.search(regex, name) for regex in no_grad_regexes):
parameter.requires_grad_(False)
frozen_parameter_names, tunable_parameter_names = \
get_frozen_and_tunable_parameter_names(model)
logger.info("Following parameters are Frozen (without gradient):")
for name in frozen_parameter_names:
logger.info(name)
logger.info("Following parameters are Tunable (with gradient):")
for name in tunable_parameter_names:
logger.info(name)
vocab.save_to_files(os.path.join(serialization_dir, "vocabulary"))
train_data = all_datasets['train']
validation_data = all_datasets.get('validation')
test_data = all_datasets.get('test')
dl_params = params.pop("data_loader")
if test_data is not None:
rand = random.Random(1234)
test_data.index_with(vocab)
shuffled_test = copy(test_data.instances)
rand.shuffle(shuffled_test)
extra_test = shuffled_test[:2000]
keys = deepcopy(dl_params.as_dict())
keys.update({"dataset": AllennlpDataset(extra_test, vocab)})
extra_test_loader = DataLoader.from_params(params.pop("test_data_loader", keys))
keys = deepcopy(dl_params.as_dict())
keys.update({"dataset": test_data})
test_loader = DataLoader.from_params(params.pop("test_data_loader", keys))
master_model = model
global_metrics = {}
training_metrics = []
final_metrics = {}
master_trainer = trainer_params.as_dict()
if num_folds is not None:
rand = random.Random(1234)
fold_train = []
fold_test = []
fold_train_loader = []
fold_test_loader = []
shuffled_instances = copy(train_data.instances)
rand.shuffle(shuffled_instances)
kfold = KFold(n_splits=num_folds, random_state=None, shuffle=False)
computed_folds = list(kfold.split(shuffled_instances))
for fold in range(num_folds):
train_indexes, test_indexes = computed_folds[fold]
new_train = [shuffled_instances[i] for i in train_indexes]
new_test = [shuffled_instances[i] for i in test_indexes]
fold_train.append(AllennlpDataset(new_train, vocab=vocab))
fold_test.append(AllennlpDataset(new_test, vocab=vocab))
keys = deepcopy(dl_params.as_dict())
keys.update({"dataset": fold_test[-1]})
fold_test_loader.append(DataLoader.from_params(params.pop("fold_test_data_loader",keys)))
keys = deepcopy(dl_params.as_dict())
keys.update({"dataset": fold_train[-1]})
fold_train_loader.append(DataLoader.from_params(params.pop("fold_train_data_loader", keys)))
for fold in ([in_fold] if in_fold is not None else range(num_folds)):
fold_model = deepcopy(master_model)
eval_epoch_callback = EvalEpochCallback(fold, fold_test_loader[fold], test_loader, global_metrics)
callbacks = [eval_epoch_callback]
if ewc_weight is not None:
ewc = EWC(extra_test_loader)
def ewc_forward(*args, **kwargs) -> Dict[str, torch.Tensor]:
ewc_loss = 0
if ewc.model.training:
ewc_loss = ewc.penalty(ewc.model)
ret = ewc.model.old_forward(*args, **kwargs)
ret["loss"] += ewc_weight * ewc_loss
return ret
fold_model.old_forward = fold_model.forward
fold_model.forward = ewc_forward
callbacks.append(CallLossCallback(ewc))
trainer = Trainer.from_params(model=fold_model,
serialization_dir=serialization_dir,
data_loader=fold_train_loader[fold],
train_data=train_data,
validation_data=None,
params=Params(deepcopy(master_trainer)),
validation_data_loader=None,
epoch_callbacks=callbacks)
training_metrics.append(trainer.train())
del fold_model
del trainer
del eval_epoch_callback
state = glob(serialization_dir+"/*.th")
for file in state:
logger.info("deleting state - {}".format(file))
os.unlink(file)
else:
callbacks = []
if ewc_weight is not None:
ewc = EWC(extra_test_loader)
def ewc_forward(*args, **kwargs) -> Dict[str, torch.Tensor]:
ewc_loss = 0
if ewc.model.training:
ewc_loss = ewc.penalty(ewc.model)
ret = ewc.model.old_forward(*args, **kwargs)
ret["loss"] += ewc_weight * ewc_loss
return ret
model.old_forward = model.forward
model.forward = ewc_forward
callbacks.append(CallLossCallback(ewc))
keys = deepcopy(dl_params.as_dict())
keys.update({"dataset": train_data})
train_data.index_with(vocab)
train_data_loader = DataLoader.from_params(params.pop("train_loader",keys))
if validation_data is not None:
validation_data.index_with(vocab)
keys = deepcopy(dl_params.as_dict())
keys.update({"dataset": validation_data})
validation_data_loader = DataLoader.from_params(params.pop("validation_loader", keys))
else:
validation_data_loader = None
if "finetune" in dir(model):
model.finetune()
logger.info("Fine tuning model")
trainer = Trainer.from_params(model=model,
serialization_dir=serialization_dir,
data_loader=train_data_loader,
train_data=train_data,
validation_data=None,
params=Params(deepcopy(master_trainer)),
validation_data_loader=validation_data_loader,
epoch_callbacks=callbacks)
training_metrics = trainer.train()
archive_model(serialization_dir)
final_metrics["fine_tune"] = global_metrics
final_metrics["training"] = training_metrics
metrics_json = json.dumps(final_metrics, indent=2)
with open(os.path.join(serialization_dir, "metrics.json"), "w") as metrics_file:
metrics_file.write(metrics_json)
logger.info("Metrics: %s", metrics_json)
return model
def dry_run_from_params(params: Params, serialization_dir: str,
force: bool = False,
cache_directory: str = None,
cache_prefix: str = None) -> None:
"""
:param params:
:param serialization_dir:
force : ``bool``, optional (default=False)
If ``True``, we will overwrite the serialization directory if it already exists.
cache_directory : ``str``, optional
For caching data pre-processing. See :func:`allennlp.training.util.datasets_from_params`.
cache_prefix : ``str``, optional
For caching data pre-processing. See :func:`allennlp.training.util.datasets_from_params`.
:return:
"""
if os.path.exists(serialization_dir) and force:
shutil.rmtree(serialization_dir)
prepare_environment(params)
vocab_params = params.pop("vocabulary", {})
os.makedirs(serialization_dir, exist_ok=True)
vocab_dir = os.path.join(serialization_dir, "vocabulary")
if os.path.isdir(vocab_dir) and os.listdir(vocab_dir) is not None:
raise ConfigurationError("The 'vocabulary' directory in the provided "
"serialization directory is non-empty")
all_datasets = datasets_from_params(params, cache_directory, cache_prefix)
datasets_for_vocab_creation = set(params.pop("datasets_for_vocab_creation", all_datasets))
for dataset in datasets_for_vocab_creation:
if dataset not in all_datasets:
raise ConfigurationError(f"invalid 'dataset_for_vocab_creation' {dataset}")
logger.info("From dataset instances, %s will be considered for vocabulary creation.",
", ".join(datasets_for_vocab_creation))
instances = [instance for key, dataset in all_datasets.items()
for instance in dataset
if key in datasets_for_vocab_creation]
vocab = Vocabulary.from_params(vocab_params, instances)
dataset = Batch(instances)
dataset.index_instances(vocab)
dataset.print_statistics()
vocab.print_statistics()
logger.info(f"writing the vocabulary to {vocab_dir}.")
vocab.save_to_files(vocab_dir)
model = Model.from_params(vocab=vocab, params=params.pop('model'))
trainer_params = params.pop("trainer")
no_grad_regexes = trainer_params.pop("no_grad", ())
for name, parameter in model.named_parameters():
if any(re.search(regex, name) for regex in no_grad_regexes):
parameter.requires_grad_(False)
frozen_parameter_names, tunable_parameter_names = \
get_frozen_and_tunable_parameter_names(model)
logger.info("Following parameters are Frozen (without gradient):")
for name in frozen_parameter_names:
logger.info(name)
logger.info("Following parameters are Tunable (with gradient):")
for name in tunable_parameter_names:
logger.info(name)
def from_params(
cls,
params: Params,
serialization_dir: str,
recover: bool = False,
cache_directory: str = None,
cache_prefix: str = None,
) -> "TrainerPieces":
all_datasets = training_util.datasets_from_params(
params, cache_directory, cache_prefix)
datasets_for_vocab_creation = set(
params.pop("datasets_for_vocab_creation", all_datasets))
for dataset in datasets_for_vocab_creation:
if dataset not in all_datasets:
raise ConfigurationError(
f"invalid 'dataset_for_vocab_creation' {dataset}")
logger.info(
"From dataset instances, %s will be considered for vocabulary creation.",
", ".join(datasets_for_vocab_creation),
)
if recover and os.path.exists(
os.path.join(serialization_dir, "vocabulary")):
vocab_params = params.pop("vocabulary", {})
vocab = Vocabulary.from_files(
os.path.join(serialization_dir, "vocabulary"),
vocab_params.get("padding_token", None),
vocab_params.get("oov_token", None),
)
else:
vocab = Vocabulary.from_params(
params.pop("vocabulary", {}),
# Using a generator comprehension here is important
# because, being lazy, it allows us to not iterate over the
# dataset when directory_path is specified.
(instance for key, dataset in all_datasets.items()
if key in datasets_for_vocab_creation
for instance in dataset),
)
model = Model.from_params(vocab=vocab, params=params.pop("model"))
# If vocab extension is ON for training, embedding extension should also be
# done. If vocab and embeddings are already in sync, it would be a no-op.
model.extend_embedder_vocab()
# Initializing the model can have side effect of expanding the vocabulary
# Save the vocab only in the master
if not is_distributed() or is_master():
vocab.save_to_files(os.path.join(serialization_dir, "vocabulary"))
iterator = DataIterator.from_params(params.pop("iterator"))
iterator.index_with(model.vocab)
validation_iterator_params = params.pop("validation_iterator", None)
if validation_iterator_params:
validation_iterator = DataIterator.from_params(
validation_iterator_params)
validation_iterator.index_with(model.vocab)
else:
validation_iterator = None
train_data = all_datasets["train"]
validation_data = all_datasets.get("validation")
test_data = all_datasets.get("test")
trainer_params = params.pop("trainer")
no_grad_regexes = trainer_params.pop("no_grad", ())
for name, parameter in model.named_parameters():
if any(re.search(regex, name) for regex in no_grad_regexes):
parameter.requires_grad_(False)
frozen_parameter_names, tunable_parameter_names = get_frozen_and_tunable_parameter_names(
model)
logger.info("Following parameters are Frozen (without gradient):")
for name in frozen_parameter_names:
logger.info(name)
logger.info("Following parameters are Tunable (with gradient):")
for name in tunable_parameter_names:
logger.info(name)
return cls(
model,
iterator,
train_data,
validation_data,
test_data,
validation_iterator,
trainer_params,
)
def from_params(
cls,
params: Params,
serialization_dir: str,
recover: bool = False,
model: Model = None,
embedding_sources_mapping: Dict[str, str] = None,
extend_vocab: bool = False,
) -> "TrainerPieces":
all_datasets = training_util.datasets_from_params(params)
vocabulary_params = params.pop("vocabulary", {})
if model:
if params.pop("model", None):
logger.warning(
"You passed parameters for the model in your configuration file, but we "
"are ignoring them, using instead the loaded model parameters."
)
# TODO(mattg): This should be updated now that directory_path no longer exists.
if vocabulary_params.get("directory_path", None):
logger.warning(
"You passed `directory_path` in parameters for the vocabulary in "
"your configuration file, but it will be ignored because we already "
"have a model with a vocabulary.")
vocab = model.vocab
else:
vocab = None
vocabulary_path = os.path.join(serialization_dir, "vocabulary")
if not vocab or extend_vocab:
vocab = TrainerPieces.create_or_extend_vocab(
datasets=all_datasets,
params=params,
recover=recover,
vocab=vocab,
vocabulary_params=vocabulary_params,
vocabulary_path=vocabulary_path,
)
if not model:
model = Model.from_params(vocab=vocab,
params=params.pop("model"))
# If vocab extension is ON for training, embedding extension should also be
# done. If vocab and embeddings are already in sync, it would be a no-op.
model.extend_embedder_vocab(embedding_sources_mapping)
# Initializing the model can have side effect of expanding the vocabulary
# Save the vocab only in the master. In the degenerate non-distributed
# case, we're trivially the master.
if is_master():
vocab.save_to_files(vocabulary_path)
iterator = DataIterator.from_params(params.pop("iterator"))
iterator.index_with(model.vocab)
validation_iterator_params = params.pop("validation_iterator", None)
if validation_iterator_params:
validation_iterator = DataIterator.from_params(
validation_iterator_params)
validation_iterator.index_with(model.vocab)
else:
validation_iterator = None
train_data = all_datasets["train"]
validation_data = all_datasets.get("validation")
test_data = all_datasets.get("test")
trainer_params = params.pop("trainer")
no_grad_regexes = trainer_params.pop("no_grad", ())
for name, parameter in model.named_parameters():
if any(re.search(regex, name) for regex in no_grad_regexes):
parameter.requires_grad_(False)
log_frozen_and_tunable_parameter_names(model)
return cls(
model=model,
iterator=iterator,
train_dataset=train_data,
validation_dataset=validation_data,
test_dataset=test_data,
validation_iterator=validation_iterator,
params=trainer_params,
)
def find_learning_rate_model(params: Params, serialization_dir: str,
start_lr: float = 1e-5,
end_lr: float = 10,
num_batches: int = 100,
linear_steps: bool = False,
stopping_factor: float = None,
force: bool = False) -> None:
"""
Runs learning rate search for given `num_batches` and saves the results in ``serialization_dir``
Parameters
----------
params : ``Params``
A parameter object specifying an AllenNLP Experiment.
serialization_dir : ``str``
The directory in which to save results.
start_lr: ``float``
Learning rate to start the search.
end_lr: ``float``
Learning rate upto which search is done.
num_batches: ``int``
Number of mini-batches to run Learning rate finder.
linear_steps: ``bool``
Increase learning rate linearly if False exponentially.
stopping_factor: ``float``
Stop the search when the current loss exceeds the best loss recorded by
multiple of stopping factor. If ``None`` search proceeds till the ``end_lr``
force: ``bool``
If True and the serialization directory already exists, everything in it will
be removed prior to finding the learning rate.
"""
if os.path.exists(serialization_dir) and force:
shutil.rmtree(serialization_dir)
if os.path.exists(serialization_dir) and os.listdir(serialization_dir):
raise ConfigurationError(f'Serialization directory {serialization_dir} already exists and is '
f'not empty.')
else:
os.makedirs(serialization_dir, exist_ok=True)
prepare_environment(params)
cuda_device = params.params.get('trainer').get('cuda_device', -1)
check_for_gpu(cuda_device)
all_datasets = datasets_from_params(params)
datasets_for_vocab_creation = set(params.pop("datasets_for_vocab_creation", all_datasets))
for dataset in datasets_for_vocab_creation:
if dataset not in all_datasets:
raise ConfigurationError(f"invalid 'dataset_for_vocab_creation' {dataset}")
logger.info("From dataset instances, %s will be considered for vocabulary creation.",
", ".join(datasets_for_vocab_creation))
vocab = Vocabulary.from_params(
params.pop("vocabulary", {}),
(instance for key, dataset in all_datasets.items()
for instance in dataset
if key in datasets_for_vocab_creation)
)
model = Model.from_params(vocab=vocab, params=params.pop('model'))
iterator = DataIterator.from_params(params.pop("iterator"))
iterator.index_with(vocab)
train_data = all_datasets['train']
trainer_params = params.pop("trainer")
no_grad_regexes = trainer_params.pop("no_grad", ())
for name, parameter in model.named_parameters():
if any(re.search(regex, name) for regex in no_grad_regexes):
parameter.requires_grad_(False)
trainer_choice = trainer_params.pop("type", "default")
if trainer_choice != "default":
raise ConfigurationError("currently find-learning-rate only works with the default Trainer")
trainer = Trainer.from_params(model=model,
serialization_dir=serialization_dir,
iterator=iterator,
train_data=train_data,
validation_data=None,
params=trainer_params,
validation_iterator=None)
logger.info(f'Starting learning rate search from {start_lr} to {end_lr} in {num_batches} iterations.')
learning_rates, losses = search_learning_rate(trainer,
start_lr=start_lr,
end_lr=end_lr,
num_batches=num_batches,
linear_steps=linear_steps,
stopping_factor=stopping_factor)
logger.info(f'Finished learning rate search.')
losses = _smooth(losses, 0.98)
_save_plot(learning_rates, losses, os.path.join(serialization_dir, 'lr-losses.png'))
def from_params(cls,
params: Params,
serialization_dir: str,
recover: bool = False,
cache_directory: str = None,
cache_prefix: str = None) -> 'PtTrainer':
max_src_len = params.dataset_reader.get('max_src_len', None)
all_datasets = training_util.datasets_from_params(
params, cache_directory, cache_prefix)
datasets_for_vocab_creation = set(
params.pop("datasets_for_vocab_creation", all_datasets))
for dataset in datasets_for_vocab_creation:
if dataset not in all_datasets:
raise ConfigurationError(
f"invalid 'dataset_for_vocab_creation' {dataset}")
logger.info(
"From dataset instances, %s will be considered for vocabulary creation.",
", ".join(datasets_for_vocab_creation))
if recover and os.path.exists(
os.path.join(serialization_dir, "vocabulary")):
vocab = Vocabulary.from_files(
os.path.join(serialization_dir, "vocabulary"))
params.pop("vocabulary", {})
else:
vocab = Vocabulary.from_params(params.pop(
"vocabulary", {}), (instance
for key, dataset in all_datasets.items()
if key in datasets_for_vocab_creation
for instance in dataset))
model = Model.from_params(vocab=vocab, params=params.pop('model'))
# If vocab extension is ON for training, embedding extension should also be
# done. If vocab and embeddings are already in sync, it would be a no-op.
model.extend_embedder_vocab()
# Initializing the model can have side effect of expanding the vocabulary
vocab.save_to_files(os.path.join(serialization_dir, "vocabulary"))
iterator = DataIterator.from_params(params.pop("iterator"))
iterator.index_with(model.vocab)
validation_iterator_params = params.pop("validation_iterator", None)
if validation_iterator_params:
validation_iterator = DataIterator.from_params(
validation_iterator_params)
validation_iterator.index_with(model.vocab)
else:
validation_iterator = None
train_data = all_datasets['train']
validation_data = all_datasets.get('validation')
test_data = all_datasets.get('test')
trainer_params = params.pop("trainer")
no_grad_regexes = trainer_params.pop("no_grad", ())
for name, parameter in model.named_parameters():
if any(re.search(regex, name) for regex in no_grad_regexes):
parameter.requires_grad_(False)
frozen_parameter_names, tunable_parameter_names = \
get_frozen_and_tunable_parameter_names(model)
logger.info("Following parameters are Frozen (without gradient):")
for name in frozen_parameter_names:
logger.info(name)
logger.info("Following parameters are Tunable (with gradient):")
for name in tunable_parameter_names:
logger.info(name)
params = trainer_params
patience = params.pop_int("patience", None)
validation_metric = params.pop("validation_metric", "-loss")
shuffle = params.pop_bool("shuffle", True)
num_epochs = params.pop_int("num_epochs", 20)
cuda_device = parse_cuda_device(params.pop("cuda_device", -1))
grad_norm = params.pop_float("grad_norm", None)
grad_clipping = params.pop_float("grad_clipping", None)
lr_scheduler_params = params.pop("learning_rate_scheduler", None)
momentum_scheduler_params = params.pop("momentum_scheduler", None)
if isinstance(cuda_device, list):
model_device = cuda_device[0]
else:
model_device = cuda_device
if model_device >= 0:
# Moving model to GPU here so that the optimizer state gets constructed on
# the right device.
model = model.cuda(model_device)
parameters = [[n, p] for n, p in model.named_parameters()
if p.requires_grad]
optimizer = Optimizer.from_params(parameters, params.pop("optimizer"))
if "moving_average" in params:
moving_average = MovingAverage.from_params(
params.pop("moving_average"), parameters=parameters)
else:
moving_average = None
if lr_scheduler_params:
lr_scheduler = LearningRateScheduler.from_params(
optimizer, lr_scheduler_params)
else:
lr_scheduler = None
if momentum_scheduler_params:
momentum_scheduler = MomentumScheduler.from_params(
optimizer, momentum_scheduler_params)
else:
momentum_scheduler = None
if 'checkpointer' in params:
if 'keep_serialized_model_every_num_seconds' in params or \
'num_serialized_models_to_keep' in params:
raise ConfigurationError(
"Checkpointer may be initialized either from the 'checkpointer' key or from the "
"keys 'num_serialized_models_to_keep' and 'keep_serialized_model_every_num_seconds'"
" but the passed config uses both methods.")
checkpointer = Checkpointer.from_params(params.pop("checkpointer"))
else:
num_serialized_models_to_keep = params.pop_int(
"num_serialized_models_to_keep", 20)
keep_serialized_model_every_num_seconds = params.pop_int(
"keep_serialized_model_every_num_seconds", None)
checkpointer = Checkpointer(
serialization_dir=serialization_dir,
num_serialized_models_to_keep=num_serialized_models_to_keep,
keep_serialized_model_every_num_seconds=
keep_serialized_model_every_num_seconds)
model_save_interval = params.pop_float("model_save_interval", None)
summary_interval = params.pop_int("summary_interval", 100)
histogram_interval = params.pop_int("histogram_interval", None)
should_log_parameter_statistics = params.pop_bool(
"should_log_parameter_statistics", True)
should_log_learning_rate = params.pop_bool("should_log_learning_rate",
False)
log_batch_size_period = params.pop_int("log_batch_size_period", None)
return cls(
model,
optimizer,
iterator,
train_data,
validation_data,
patience=patience,
validation_metric=validation_metric,
validation_iterator=validation_iterator,
max_src_len=max_src_len,
shuffle=shuffle,
num_epochs=num_epochs,
serialization_dir=serialization_dir,
cuda_device=cuda_device,
grad_norm=grad_norm,
grad_clipping=grad_clipping,
learning_rate_scheduler=lr_scheduler,
momentum_scheduler=momentum_scheduler,
checkpointer=checkpointer,
model_save_interval=model_save_interval,
summary_interval=summary_interval,
histogram_interval=histogram_interval,
should_log_parameter_statistics=should_log_parameter_statistics,
should_log_learning_rate=should_log_learning_rate,
log_batch_size_period=log_batch_size_period,
moving_average=moving_average,
batch_size=iterator._batch_size)
level=logging.INFO)
# Set seed
set_seed(args)
params = Params.from_file(args.config_file, args.overrides)
cuda_device = params.params.get('trainer').get('cuda_device', -1)
create_serialization_dir(params,
args.output_dir,
recover=False,
force=True)
params.to_file(os.path.join(args.output_dir, CONFIG_NAME))
teacher_path = params.pop("teacher_path", None)
# support multi dataset training.
all_datasets = training_util.datasets_from_params(params)
# student model initialized from a pretrained QA model
if args.model_archive is not None:
student_model = load_archive(args.model_archive).model
else:
datasets_for_vocab_creation = set(
params.pop("datasets_for_vocab_creation", all_datasets))
if args.recover and os.path.exists(
os.path.join(args.output_dir, "vocabulary")):
vocab = Vocabulary.from_files(
os.path.join(args.output_dir, "vocabulary"))
params.pop("vocabulary", {})
else:
vocab = Vocabulary.from_params(params.pop(
"vocabulary", {}), (instance
