def train_pet_ensemble(
model_config: WrapperConfig,
train_config: TrainConfig,
eval_config: EvalConfig,
pattern_ids: List[Union[str, int]],
output_dir: str,
ipet_data_dir: str = None,
repetitions: int = 3,
train_data: List[InputExample] = None,
unlabeled_data: List[InputExample] = None,
dev_data: List[InputExample] = None,
test_data: List[InputExample] = None,
do_train: bool = True,
do_eval: bool = True,
save_unlabeled_logits: bool = False,
seed: int = 42,
overwrite_dir: bool = False,
save_model=False,
local_rank=-1,
):
"""
Train and evaluate an ensemble of PET models without knowledge distillation.
:param model_config: the model configuration to use
:param train_config: the training configuration to use
:param eval_config: the evaluation configuration to use
:param pattern_ids: the ids of all PVPs to use
:param output_dir: the output directory
:param ipet_data_dir: optional directory containing additional training data for iPET
:param repetitions: the number of training repetitions
:param train_data: the training examples to use
:param unlabeled_data: the unlabeled examples to use
:param dev_data: the evaluation examples to use
:param do_train: whether to perform training
:param do_eval: whether to perform evaluation
:param save_unlabeled_logits: whether logits for unlabeled examples should be saved in a file ``logits.txt``. This
is required for both iPET and knowledge distillation.
:param seed: the random seed to use
"""
results = defaultdict(lambda: defaultdict(lambda: defaultdict(list)))
set_seed(seed)
for pattern_id in pattern_ids:
for iteration in range(repetitions):
model_config.pattern_id = pattern_id
results_dict = {}
shots = 0 if train_data is None else len(train_data)
pattern_iter_output_dir = "{}/{}shots-{}-i{}-seed{}".format(
output_dir, shots, pattern_name(pattern_id), iteration, seed)
if os.path.exists(pattern_iter_output_dir) and not overwrite_dir:
logger.warning(
f"Path {pattern_iter_output_dir} already exists, skipping it..."
)
continue
if not os.path.exists(pattern_iter_output_dir) and local_rank in [
-1, 0
]:
os.makedirs(pattern_iter_output_dir)
wrapper = init_model(model_config)
# Training
if do_train:
if ipet_data_dir:
p = os.path.join(
ipet_data_dir,
"{}-i{}-train.bin".format(pattern_name(pattern_id),
iteration))
ipet_train_data = InputExample.load_examples(p)
for example in ipet_train_data:
example.logits = None
else:
ipet_train_data = None
results_dict.update(
train_single_model(
wrapper,
train_data,
train_config,
pattern_iter_output_dir,
dev_data,
eval_config,
ipet_train_data=ipet_train_data,
unlabeled_data=unlabeled_data,
return_train_set_results=False,
local_rank=local_rank,
))
with open(os.path.join(pattern_iter_output_dir, "results.txt"),
"w") as fh:
fh.write(str(results_dict))
if local_rank in [-1, 0]:
logger.info("Saving trained model at {}...".format(
pattern_iter_output_dir))
train_config.save(
os.path.join(pattern_iter_output_dir,
"train_config.json"))
eval_config.save(
os.path.join(pattern_iter_output_dir,
"eval_config.json"))
logger.info("Saving complete")
if save_unlabeled_logits:
logits = evaluate(wrapper,
unlabeled_data,
eval_config,
local_rank=local_rank)["logits"]
save_logits(
os.path.join(pattern_iter_output_dir,
"logits.txt"), logits)
if not do_eval:
wrapper.model = None
wrapper = None
torch.cuda.empty_cache()
# Evaluation
if do_eval:
logger.info("Starting evaluation...")
try:
wrapper = TransformerModelWrapper.from_pretrained(
pattern_iter_output_dir)
except OSError:
warnings.warn(
"No model found saved, proceeding with current model instead of best"
)
pass
for split, eval_data in {
"dev": dev_data,
"test": test_data
}.items():
if eval_data is None:
continue
eval_result = evaluate(wrapper,
eval_data,
eval_config,
priming_data=train_data,
local_rank=local_rank)
if local_rank in [-1, 0]:
save_predictions(
os.path.join(pattern_iter_output_dir,
"predictions.jsonl"), wrapper,
eval_result)
save_logits(
os.path.join(pattern_iter_output_dir,
"eval_logits.txt"),
eval_result["logits"])
scores = eval_result["scores"]
logger.info(
"--- {} result (pattern_id={}, iteration={}) ---".
format(split, pattern_id, iteration))
logger.info(scores)
results_dict[f"{split}_set_after_training"] = scores
with open(
os.path.join(pattern_iter_output_dir,
"results.json"), "w") as fh:
json.dump(results_dict, fh)
for metric, value in scores.items():
results[split][metric][pattern_id].append(value)
wrapper.model = None
wrapper = None
torch.cuda.empty_cache()
if do_eval:
logger.info("=== OVERALL RESULTS ===")
results_to_log = _write_results(
os.path.join(output_dir, "result_test.txt"), results)
else:
logger.info("=== ENSEMBLE TRAINING COMPLETE ===")
results_to_log = None
if do_train and not save_model:
outputs = os.listdir(pattern_iter_output_dir)
for item in outputs:
if item.endswith(".bin"):
os.remove(os.path.join(pattern_iter_output_dir, item))
return results_to_log
def train_pet_ensemble(model_config: WrapperConfig,
train_config: TrainConfig,
eval_config: EvalConfig,
pattern_ids: List[int],
output_dir: str,
ipet_data_dir: str = None,
repetitions: int = 3,
train_data: List[InputExample] = None,
unlabeled_data: List[InputExample] = None,
eval_data: List[InputExample] = None,
do_train: bool = True,
do_eval: bool = True,
save_unlabeled_logits: bool = False,
seed: int = 42):
"""
Train and evaluate an ensemble of PET models without knowledge distillation.
:param model_config: the model configuration to use
:param train_config: the training configuration to use
:param eval_config: the evaluation configuration to use
:param pattern_ids: the ids of all PVPs to use
:param output_dir: the output directory
:param ipet_data_dir: optional directory containing additional training data for iPET
:param repetitions: the number of training repetitions
:param train_data: the training examples to use
:param unlabeled_data: the unlabeled examples to use
:param eval_data: the evaluation examples to use
:param do_train: whether to perform training
:param do_eval: whether to perform evaluation
:param save_unlabeled_logits: whether logits for unlabeled examples should be saved in a file ``logits.txt``. This
is required for both iPET and knowledge distillation.
:param seed: the random seed to use
"""
results = defaultdict(lambda: defaultdict(list))
set_seed(seed)
for pattern_id in pattern_ids:
for iteration in range(repetitions):
model_config.pattern_id = pattern_id
results_dict = {}
pattern_iter_output_dir = "{}/p{}-i{}".format(
output_dir, pattern_id, iteration)
if os.path.exists(pattern_iter_output_dir):
logger.warning(
f"Path {pattern_iter_output_dir} already exists, skipping it..."
)
continue
if not os.path.exists(pattern_iter_output_dir):
os.makedirs(pattern_iter_output_dir)
wrapper = init_model(model_config)
# Training
if do_train:
if ipet_data_dir:
p = os.path.join(
ipet_data_dir,
'p{}-i{}-train.bin'.format(pattern_id, iteration))
ipet_train_data = InputExample.load_examples(p)
for example in ipet_train_data:
example.logits = None
else:
ipet_train_data = None
results_dict.update(
train_single_model(wrapper,
train_data,
train_config,
eval_config,
ipet_train_data=ipet_train_data,
unlabeled_data=unlabeled_data))
with open(os.path.join(pattern_iter_output_dir, 'results.txt'),
'w') as fh:
fh.write(str(results_dict))
logger.info("Saving trained model at {}...".format(
pattern_iter_output_dir))
wrapper.save(pattern_iter_output_dir)
train_config.save(
os.path.join(pattern_iter_output_dir, 'train_config.json'))
eval_config.save(
os.path.join(pattern_iter_output_dir, 'eval_config.json'))
logger.info("Saving complete")
if save_unlabeled_logits:
logits = evaluate(wrapper, unlabeled_data,
eval_config)['logits']
save_logits(
os.path.join(pattern_iter_output_dir, 'logits.txt'),
logits)
if not do_eval:
wrapper.model = None
wrapper = None
torch.cuda.empty_cache()
# Evaluation
if do_eval:
logger.info("Starting evaluation...")
if not wrapper:
wrapper = TransformerModelWrapper.from_pretrained(
pattern_iter_output_dir)
eval_result = evaluate(wrapper,
eval_data,
eval_config,
priming_data=train_data)
save_predictions(
os.path.join(pattern_iter_output_dir, 'predictions.jsonl'),
wrapper, eval_result)
save_logits(
os.path.join(pattern_iter_output_dir, 'eval_logits.txt'),
eval_result['logits'])
scores = eval_result['scores']
logger.info(
"--- RESULT (pattern_id={}, iteration={}) ---".format(
pattern_id, iteration))
logger.info(scores)
results_dict['test_set_after_training'] = scores
with open(
os.path.join(pattern_iter_output_dir, 'results.json'),
'w') as fh:
json.dump(results_dict, fh)
for metric, value in scores.items():
results[metric][pattern_id].append(value)
wrapper.model = None
wrapper = None
torch.cuda.empty_cache()
if do_eval:
logger.info("=== OVERALL RESULTS ===")
_write_results(os.path.join(output_dir, 'result_test.txt'), results)
else:
logger.info("=== ENSEMBLE TRAINING COMPLETE ===")