def get(text):
question_examples = [SquadExample(qas_id='serve', question_text=text)]
query_eval_features = convert_questions_to_features(
examples=question_examples,
tokenizer=tokenizer,
max_query_length=16)
question_dataloader = convert_question_features_to_dataloader(query_eval_features, args.fp16,
args.local_rank,
args.predict_batch_size)
model.eval()
question_results = get_question_results_(question_examples, query_eval_features, question_dataloader,
device, model)
question_result = next(iter(question_results))
out = question_result.start.tolist(), question_result.end.tolist(), question_result.span_logit.tolist()
return out
def main():
parser = argparse.ArgumentParser()
## Required parameters
parser.add_argument('--mode', type=str, default='train')
parser.add_argument('--pause', type=int, default=0)
parser.add_argument('--iteration', type=str, default='1')
parser.add_argument('--fs', type=str, default='local',
help='must be `local`. Do not change.')
# Data paths
parser.add_argument('--data_dir', default='data/', type=str)
parser.add_argument("--train_file", default='train-v1.1.json', type=str,
help="SQuAD json for training. E.g., train-v1.1.json")
parser.add_argument("--predict_file", default='dev-v1.1.json', type=str,
help="SQuAD json for predictions. E.g., dev-v1.1.json or test-v1.1.json")
parser.add_argument('--gt_file', default='dev-v1.1.json', type=str, help='ground truth file needed for evaluation.')
# Metadata paths
parser.add_argument('--metadata_dir', default='metadata/', type=str)
parser.add_argument("--vocab_file", default='vocab.txt', type=str,
help="The vocabulary file that the BERT model was trained on.")
parser.add_argument("--bert_model_option", default='large_uncased', type=str,
help="model architecture option. [large_uncased] or [base_uncased]")
parser.add_argument("--bert_config_file", default='bert_config.json', type=str,
help="The config json file corresponding to the pre-trained BERT model. "
"This specifies the model architecture.")
parser.add_argument("--init_checkpoint", default='pytorch_model.bin', type=str,
help="Initial checkpoint (usually from a pre-trained BERT model).")
# Output and load paths
parser.add_argument("--output_dir", default='out/', type=str,
help="The output directory where the model checkpoints will be written.")
parser.add_argument("--index_file", default='index.hdf5', type=str, help="index output file.")
parser.add_argument("--question_emb_file", default='question.hdf5', type=str, help="question output file.")
parser.add_argument('--load_dir', default='out/', type=str)
# Local paths (if we want to run cmd)
parser.add_argument('--eval_script', default='evaluate-v1.1.py', type=str)
# Do's
parser.add_argument("--do_load", default=False, action='store_true', help='Do load. If eval, do load automatically')
parser.add_argument("--do_train", default=False, action='store_true', help="Whether to run training.")
parser.add_argument("--do_train_filter", default=False, action='store_true', help='Train filter or not.')
parser.add_argument("--do_train_sparse", default=False, action='store_true', help='Train sparse or not.')
parser.add_argument("--do_predict", default=False, action='store_true', help="Whether to run eval on the dev set.")
parser.add_argument('--do_eval', default=False, action='store_true')
parser.add_argument('--do_embed_question', default=False, action='store_true')
parser.add_argument('--do_index', default=False, action='store_true')
parser.add_argument('--do_serve', default=False, action='store_true')
# Model options: if you change these, you need to train again
parser.add_argument("--do_case", default=False, action='store_true',
help="Whether to lower case the input text. Should be True for uncased "
"models and False for cased models.")
parser.add_argument('--phrase_size', default=961, type=int)
parser.add_argument('--metric', default='ip', type=str, help='ip | l2')
parser.add_argument("--use_sparse", default=False, action='store_true')
# GPU and memory related options
parser.add_argument("--max_seq_length", default=384, type=int,
help="The maximum total input sequence length after WordPiece tokenization. Sequences "
"longer than this will be truncated, and sequences shorter than this will be padded.")
parser.add_argument("--doc_stride", default=128, type=int,
help="When splitting up a long document into chunks, how much stride to take between chunks.")
parser.add_argument("--max_query_length", default=64, type=int,
help="The maximum number of tokens for the question. Questions longer than this will "
"be truncated to this length.")
parser.add_argument("--train_batch_size", default=12, type=int, help="Total batch size for training.")
parser.add_argument("--predict_batch_size", default=16, type=int, help="Total batch size for predictions.")
parser.add_argument('--gradient_accumulation_steps',
type=int,
default=1,
help="Number of updates steps to accumulate before performing a backward/update pass.")
parser.add_argument('--optimize_on_cpu',
default=False,
action='store_true',
help="Whether to perform optimization and keep the optimizer averages on CPU")
parser.add_argument("--no_cuda",
default=False,
action='store_true',
help="Whether not to use CUDA when available")
parser.add_argument("--local_rank",
type=int,
default=-1,
help="local_rank for distributed training on gpus")
parser.add_argument('--fp16',
default=False,
action='store_true',
help="Whether to use 16-bit float precision instead of 32-bit")
# Training options: only effective during training
parser.add_argument("--learning_rate", default=3e-5, type=float, help="The initial learning rate for Adam.")
parser.add_argument("--num_train_epochs", default=3.0, type=float,
help="Total number of training epochs to perform.")
parser.add_argument("--num_train_filter_epochs", default=1.0, type=float,
help="Total number of training epochs for filter to perform.")
parser.add_argument("--num_train_sparse_epochs", default=3.0, type=float,
help="Total number of training epochs for sparse to perform.")
parser.add_argument("--warmup_proportion", default=0.1, type=float,
help="Proportion of training to perform linear learning rate warmup for. E.g., 0.1 = 10% "
"of training.")
parser.add_argument("--save_checkpoints_steps", default=1000, type=int,
help="How often to save the model checkpoint.")
parser.add_argument("--iterations_per_loop", default=1000, type=int,
help="How many steps to make in each estimator call.")
# Prediction options: only effective during prediction
parser.add_argument("--n_best_size", default=20, type=int,
help="The total number of n-best predictions to generate in the nbest_predictions.json "
"output file.")
parser.add_argument("--max_answer_length", default=30, type=int,
help="The maximum length of an answer that can be generated. This is needed because the start "
"and end predictions are not conditioned on one another.")
# Index Options
parser.add_argument('--dtype', default='float32', type=str)
parser.add_argument('--filter_threshold', default=-1e9, type=float)
parser.add_argument('--compression_offset', default=-2, type=float)
parser.add_argument('--compression_scale', default=20, type=float)
parser.add_argument('--split_by_para', default=False, action='store_true')
# Serve Options
parser.add_argument('--port', default=9009, type=int)
# Others
parser.add_argument('--parallel', default=False, action='store_true')
parser.add_argument("--verbose_logging", default=False, action='store_true',
help="If true, all of the warnings related to data processing will be printed. "
"A number of warnings are expected for a normal SQuAD evaluation.")
parser.add_argument('--seed',
type=int,
default=42,
help="random seed for initialization")
parser.add_argument('--draft', default=False, action='store_true')
parser.add_argument('--draft_num_examples', type=int, default=12)
args = parser.parse_args()
# Filesystem routines
if args.fs == 'local':
class Processor(object):
def __init__(self, path):
self._save = None
self._load = None
self._path = path
def bind(self, save, load):
self._save = save
self._load = load
def save(self, checkpoint=None, save_fn=None, **kwargs):
path = os.path.join(self._path, str(checkpoint))
if save_fn is None:
self._save(path, **kwargs)
else:
save_fn(path, **kwargs)
def load(self, checkpoint, load_fn=None, session=None, **kwargs):
assert self._path == session
path = os.path.join(self._path, str(checkpoint), 'model.pt')
if load_fn is None:
self._load(path, **kwargs)
else:
load_fn(path, **kwargs)
processor = Processor(args.load_dir)
else:
raise ValueError(args.fs)
if not args.do_train:
args.do_load = True
# Configure paths
args.train_file = os.path.join(args.data_dir, args.train_file)
args.predict_file = os.path.join(args.data_dir, args.predict_file)
args.gt_file = os.path.join(args.data_dir, args.gt_file)
args.bert_config_file = os.path.join(args.metadata_dir, args.bert_config_file.replace(".json", "") +
"_" + args.bert_model_option + ".json")
args.init_checkpoint = os.path.join(args.metadata_dir, args.init_checkpoint.replace(".bin", "") +
"_" + args.bert_model_option + ".bin")
args.vocab_file = os.path.join(args.metadata_dir, args.vocab_file)
args.index_file = os.path.join(args.output_dir, args.index_file)
# Multi-GPU stuff
if args.local_rank == -1 or args.no_cuda:
device = torch.device("cuda" if torch.cuda.is_available() and not args.no_cuda else "cpu")
n_gpu = torch.cuda.device_count()
else:
device = torch.device("cuda", args.local_rank)
n_gpu = 1
# Initializes the distributed backend which will take care of sychronizing nodes/GPUs
torch.distributed.init_process_group(backend='nccl')
logger.info("device %s n_gpu %d distributed training %r", device, n_gpu, bool(args.local_rank != -1))
if args.gradient_accumulation_steps < 1:
raise ValueError("Invalid gradient_accumulation_steps parameter: {}, should be >= 1".format(
args.gradient_accumulation_steps))
args.train_batch_size = int(args.train_batch_size / args.gradient_accumulation_steps)
# Seed for reproducibility
random.seed(args.seed)
np.random.seed(args.seed)
torch.manual_seed(args.seed)
if n_gpu > 0:
torch.cuda.manual_seed_all(args.seed)
bert_config = BertConfig.from_json_file(args.bert_config_file)
if args.max_seq_length > bert_config.max_position_embeddings:
raise ValueError(
"Cannot use sequence length %d because the BERT model "
"was only trained up to sequence length %d" %
(args.max_seq_length, bert_config.max_position_embeddings))
if os.path.exists(args.output_dir) and os.listdir(args.output_dir):
# raise ValueError("Output directory () already exists and is not empty.")
pass
else:
os.makedirs(args.output_dir, exist_ok=True)
tokenizer = tokenization.FullTokenizer(vocab_file=args.vocab_file, do_lower_case=not args.do_case)
model = BertPhraseModel(
bert_config,
phrase_size=args.phrase_size,
metric=args.metric,
use_sparse=args.use_sparse
)
print('Number of model parameters:', sum(p.numel() for p in model.parameters()))
if not args.do_load and args.init_checkpoint is not None:
state_dict = torch.load(args.init_checkpoint, map_location='cpu')
# If below: for Korean BERT compatibility
if next(iter(state_dict)).startswith('bert.'):
state_dict = {key[len('bert.'):]: val for key, val in state_dict.items()}
state_dict = {key: val for key, val in state_dict.items() if key in model.encoder.bert_model.state_dict()}
model.encoder.bert.load_state_dict(state_dict)
if args.fp16:
model.half()
if not args.optimize_on_cpu:
model.to(device)
if args.local_rank != -1:
model = torch.nn.parallel.DistributedDataParallel(model, device_ids=[args.local_rank],
output_device=args.local_rank)
elif args.parallel or n_gpu > 1:
model = torch.nn.DataParallel(model)
if args.do_load:
bind_model(processor, model)
processor.load(args.iteration, session=args.load_dir)
if args.do_train:
train_examples = read_squad_examples(
input_file=args.train_file, is_training=True, draft=args.draft, draft_num_examples=args.draft_num_examples)
num_train_steps = int(
len(train_examples) / args.train_batch_size / args.gradient_accumulation_steps * args.num_train_epochs)
no_decay = ['bias', 'gamma', 'beta']
optimizer_parameters = [
{'params': [p for n, p in model.named_parameters() if n not in no_decay], 'weight_decay_rate': 0.01},
{'params': [p for n, p in model.named_parameters() if n in no_decay], 'weight_decay_rate': 0.0}
]
optimizer = BERTAdam(optimizer_parameters,
lr=args.learning_rate,
warmup=args.warmup_proportion,
t_total=num_train_steps)
bind_model(processor, model, optimizer)
global_step = 0
train_features, train_features_ = convert_examples_to_features(
examples=train_examples,
tokenizer=tokenizer,
max_seq_length=args.max_seq_length,
doc_stride=args.doc_stride,
max_query_length=args.max_query_length,
is_training=True)
train_features = inject_noise_to_features_list(train_features,
clamp=True,
replace=True,
shuffle=True)
logger.info("***** Running training *****")
logger.info(" Num orig examples = %d", len(train_examples))
logger.info(" Num split examples = %d", len(train_features))
logger.info(" Batch size = %d", args.train_batch_size)
logger.info(" Num steps = %d", num_train_steps)
all_input_ids = torch.tensor([f.input_ids for f in train_features], dtype=torch.long)
all_input_mask = torch.tensor([f.input_mask for f in train_features], dtype=torch.long)
all_start_positions = torch.tensor([f.start_position for f in train_features], dtype=torch.long)
all_end_positions = torch.tensor([f.end_position for f in train_features], dtype=torch.long)
all_input_ids_ = torch.tensor([f.input_ids for f in train_features_], dtype=torch.long)
all_input_mask_ = torch.tensor([f.input_mask for f in train_features_], dtype=torch.long)
if args.fp16:
(all_input_ids, all_input_mask,
all_start_positions,
all_end_positions) = tuple(t.half() for t in (all_input_ids, all_input_mask,
all_start_positions, all_end_positions))
all_input_ids_, all_input_mask_ = tuple(t.half() for t in (all_input_ids_, all_input_mask_))
train_data = TensorDataset(all_input_ids, all_input_mask,
all_input_ids_, all_input_mask_,
all_start_positions, all_end_positions)
if args.local_rank == -1:
train_sampler = RandomSampler(train_data)
else:
train_sampler = DistributedSampler(train_data)
train_dataloader = DataLoader(train_data, sampler=train_sampler, batch_size=args.train_batch_size)
model.train()
for epoch in range(int(args.num_train_epochs)):
for step, batch in enumerate(tqdm(train_dataloader, desc="Epoch %d" % (epoch + 1))):
batch = tuple(t.to(device) for t in batch)
(input_ids, input_mask,
input_ids_, input_mask_,
start_positions, end_positions) = batch
loss, _ = model(input_ids, input_mask,
input_ids_, input_mask_,
start_positions, end_positions)
if n_gpu > 1:
loss = loss.mean() # mean() to average on multi-gpu.
if args.gradient_accumulation_steps > 1:
loss = loss / args.gradient_accumulation_steps
loss.backward()
if (step + 1) % args.gradient_accumulation_steps == 0:
if args.optimize_on_cpu:
model.to('cpu')
optimizer.step() # We have accumulated enought gradients
model.zero_grad()
if args.optimize_on_cpu:
model.to(device)
global_step += 1
processor.save(epoch + 1)
if args.do_train_filter:
train_examples = read_squad_examples(
input_file=args.train_file, is_training=True, draft=args.draft, draft_num_examples=args.draft_num_examples)
num_train_steps = int(
len(
train_examples) / args.train_batch_size / args.gradient_accumulation_steps * args.num_train_filter_epochs)
if args.parallel or n_gpu > 1:
optimizer = Adam(model.module.filter.parameters())
else:
optimizer = Adam(model.filter.parameters())
bind_model(processor, model, optimizer)
global_step = 0
train_features, train_features_ = convert_examples_to_features(
examples=train_examples,
tokenizer=tokenizer,
max_seq_length=args.max_seq_length,
doc_stride=args.doc_stride,
max_query_length=args.max_query_length,
is_training=True)
logger.info("***** Running filter training *****")
logger.info(" Num orig examples = %d", len(train_examples))
logger.info(" Num split examples = %d", len(train_features))
logger.info(" Batch size = %d", args.train_batch_size)
logger.info(" Num steps = %d", num_train_steps)
all_input_ids = torch.tensor([f.input_ids for f in train_features], dtype=torch.long)
all_input_mask = torch.tensor([f.input_mask for f in train_features], dtype=torch.long)
all_start_positions = torch.tensor([f.start_position for f in train_features], dtype=torch.long)
all_end_positions = torch.tensor([f.end_position for f in train_features], dtype=torch.long)
all_input_ids_ = torch.tensor([f.input_ids for f in train_features_], dtype=torch.long)
all_input_mask_ = torch.tensor([f.input_mask for f in train_features_], dtype=torch.long)
if args.fp16:
(all_input_ids, all_input_mask,
all_start_positions,
all_end_positions) = tuple(t.half() for t in (all_input_ids, all_input_mask,
all_start_positions, all_end_positions))
all_input_ids_, all_input_mask_ = tuple(t.half() for t in (all_input_ids_, all_input_mask_))
train_data = TensorDataset(all_input_ids, all_input_mask,
all_input_ids_, all_input_mask_,
all_start_positions, all_end_positions)
if args.local_rank == -1:
train_sampler = RandomSampler(train_data)
else:
train_sampler = DistributedSampler(train_data)
train_dataloader = DataLoader(train_data, sampler=train_sampler, batch_size=args.train_batch_size)
model.train()
for epoch in range(int(args.num_train_filter_epochs)):
for step, batch in enumerate(tqdm(train_dataloader, desc="Epoch %d" % (epoch + 1))):
batch = tuple(t.to(device) for t in batch)
(input_ids, input_mask,
input_ids_, input_mask_,
start_positions, end_positions) = batch
_, loss = model(input_ids, input_mask,
input_ids_, input_mask_,
start_positions, end_positions)
if n_gpu > 1:
loss = loss.mean() # mean() to average on multi-gpu.
if args.gradient_accumulation_steps > 1:
loss = loss / args.gradient_accumulation_steps
loss.backward()
if (step + 1) % args.gradient_accumulation_steps == 0:
if args.optimize_on_cpu:
model.to('cpu')
optimizer.step() # We have accumulated enought gradients
model.zero_grad()
if args.optimize_on_cpu:
model.to(device)
global_step += 1
processor.save(epoch + 1)
if args.do_train_sparse:
train_examples = read_squad_examples(
input_file=args.train_file, is_training=True, draft=args.draft, draft_num_examples=args.draft_num_examples)
num_train_steps = int(
len(
train_examples) / args.train_batch_size / args.gradient_accumulation_steps * args.num_train_sparse_epochs)
'''
if args.parallel or n_gpu > 1:
optimizer = Adam(model.module.sparse_layer.parameters())
else:
optimizer = Adam(model.sparse_layer.parameters())
'''
no_decay = ['bias', 'gamma', 'beta']
optimizer_parameters = [
{'params': [p for n, p in model.named_parameters() if (n not in no_decay) and ('filter' not in n)],
'weight_decay_rate': 0.01},
{'params': [p for n, p in model.named_parameters() if (n in no_decay) and ('filter' not in n)],
'weight_decay_rate': 0.0}
]
optimizer = BERTAdam(optimizer_parameters,
lr=args.learning_rate,
warmup=args.warmup_proportion,
t_total=num_train_steps)
bind_model(processor, model, optimizer)
global_step = 0
train_features, train_features_ = convert_examples_to_features(
examples=train_examples,
tokenizer=tokenizer,
max_seq_length=args.max_seq_length,
doc_stride=args.doc_stride,
max_query_length=args.max_query_length,
is_training=True)
logger.info("***** Running sparse training *****")
logger.info(" Num orig examples = %d", len(train_examples))
logger.info(" Num split examples = %d", len(train_features))
logger.info(" Batch size = %d", args.train_batch_size)
logger.info(" Num steps = %d", num_train_steps)
all_input_ids = torch.tensor([f.input_ids for f in train_features], dtype=torch.long)
all_input_mask = torch.tensor([f.input_mask for f in train_features], dtype=torch.long)
all_start_positions = torch.tensor([f.start_position for f in train_features], dtype=torch.long)
all_end_positions = torch.tensor([f.end_position for f in train_features], dtype=torch.long)
all_input_ids_ = torch.tensor([f.input_ids for f in train_features_], dtype=torch.long)
all_input_mask_ = torch.tensor([f.input_mask for f in train_features_], dtype=torch.long)
if args.fp16:
(all_input_ids, all_input_mask,
all_start_positions,
all_end_positions) = tuple(t.half() for t in (all_input_ids, all_input_mask,
all_start_positions, all_end_positions))
all_input_ids_, all_input_mask_ = tuple(t.half() for t in (all_input_ids_, all_input_mask_))
train_data = TensorDataset(all_input_ids, all_input_mask,
all_input_ids_, all_input_mask_,
all_start_positions, all_end_positions)
if args.local_rank == -1:
train_sampler = RandomSampler(train_data)
else:
train_sampler = DistributedSampler(train_data)
train_dataloader = DataLoader(train_data, sampler=train_sampler, batch_size=args.train_batch_size)
model.train()
for epoch in range(int(args.num_train_sparse_epochs)):
for step, batch in enumerate(tqdm(train_dataloader, desc="Epoch %d" % (epoch + 1))):
batch = tuple(t.to(device) for t in batch)
(input_ids, input_mask,
input_ids_, input_mask_,
start_positions, end_positions) = batch
loss, _ = model(input_ids, input_mask,
input_ids_, input_mask_,
start_positions, end_positions)
if n_gpu > 1:
loss = loss.mean() # mean() to average on multi-gpu.
if args.gradient_accumulation_steps > 1:
loss = loss / args.gradient_accumulation_steps
loss.backward()
if (step + 1) % args.gradient_accumulation_steps == 0:
if args.optimize_on_cpu:
model.to('cpu')
optimizer.step() # We have accumulated enought gradients
model.zero_grad()
if args.optimize_on_cpu:
model.to(device)
global_step += 1
processor.save(epoch + 1)
if args.do_predict:
eval_examples = read_squad_examples(
input_file=args.predict_file, is_training=False, draft=args.draft,
draft_num_examples=args.draft_num_examples)
eval_features, query_eval_features = convert_examples_to_features(
examples=eval_examples,
tokenizer=tokenizer,
max_seq_length=args.max_seq_length,
doc_stride=args.doc_stride,
max_query_length=args.max_query_length,
is_training=False)
logger.info("***** Running predictions *****")
logger.info(" Num orig examples = %d", len(eval_examples))
logger.info(" Num split examples = %d", len(eval_features))
logger.info(" Batch size = %d", args.predict_batch_size)
all_input_ids = torch.tensor([f.input_ids for f in eval_features], dtype=torch.long)
all_input_mask = torch.tensor([f.input_mask for f in eval_features], dtype=torch.long)
all_input_ids_ = torch.tensor([f.input_ids for f in query_eval_features], dtype=torch.long)
all_input_mask_ = torch.tensor([f.input_mask for f in query_eval_features], dtype=torch.long)
all_example_index = torch.arange(all_input_ids.size(0), dtype=torch.long)
if args.fp16:
(all_input_ids, all_input_mask, all_example_index) = tuple(t.half() for t in (all_input_ids, all_input_mask,
all_example_index))
all_input_ids_, all_input_mask_ = tuple(t.half() for t in (all_input_ids_, all_input_mask_))
eval_data = TensorDataset(all_input_ids, all_input_mask,
all_input_ids_, all_input_mask_,
all_example_index)
if args.local_rank == -1:
eval_sampler = SequentialSampler(eval_data)
else:
eval_sampler = DistributedSampler(eval_data)
eval_dataloader = DataLoader(eval_data, sampler=eval_sampler, batch_size=args.predict_batch_size)
model.eval()
logger.info("Start evaluating")
def get_results():
for (input_ids, input_mask, input_ids_, input_mask_, example_indices) in eval_dataloader:
input_ids = input_ids.to(device)
input_mask = input_mask.to(device)
input_ids_ = input_ids_.to(device)
input_mask_ = input_mask_.to(device)
with torch.no_grad():
batch_all_logits, bs, be = model(input_ids, input_mask, input_ids_, input_mask_)
for i, example_index in enumerate(example_indices):
all_logits = batch_all_logits[i].detach().cpu().numpy()
filter_start_logits = bs[i].detach().cpu().numpy()
filter_end_logits = be[i].detach().cpu().numpy()
eval_feature = eval_features[example_index.item()]
unique_id = int(eval_feature.unique_id)
yield RawResult(unique_id=unique_id,
all_logits=all_logits,
filter_start_logits=filter_start_logits,
filter_end_logits=filter_end_logits)
output_prediction_file = os.path.join(args.output_dir, "predictions.json")
write_predictions(eval_examples, eval_features, get_results(),
args.max_answer_length,
not args.do_case, output_prediction_file, args.verbose_logging,
args.filter_threshold)
if args.do_eval:
command = "python %s %s %s" % (args.eval_script, args.gt_file, output_prediction_file)
import subprocess
process = subprocess.Popen(command.split(), stdout=subprocess.PIPE)
output, error = process.communicate()
if args.do_embed_question:
question_examples = read_squad_examples(
question_only=True,
input_file=args.predict_file, is_training=False, draft=args.draft,
draft_num_examples=args.draft_num_examples)
query_eval_features = convert_questions_to_features(
examples=question_examples,
tokenizer=tokenizer,
max_query_length=args.max_query_length)
question_dataloader = convert_question_features_to_dataloader(query_eval_features, args.fp16, args.local_rank,
args.predict_batch_size)
model.eval()
logger.info("Start embedding")
question_results = get_question_results_(question_examples, query_eval_features, question_dataloader, device,
model)
path = os.path.join(args.output_dir, args.question_emb_file)
print('Writing %s' % path)
write_question_results(question_results, query_eval_features, path)
if args.do_index:
if ':' not in args.predict_file:
predict_files = [args.predict_file]
offsets = [0]
else:
dirname = os.path.dirname(args.predict_file)
basename = os.path.basename(args.predict_file)
start, end = list(map(int, basename.split(':')))
# skip files if possible
if os.path.exists(args.index_file):
with h5py.File(args.index_file, 'r') as f:
dids = list(map(int, f.keys()))
start = int(max(dids) / 1000)
print('%s exists; starting from %d' % (args.index_file, start))
names = [str(i).zfill(4) for i in range(start, end)]
predict_files = [os.path.join(dirname, name) for name in names]
offsets = [int(each) * 1000 for each in names]
for offset, predict_file in zip(offsets, predict_files):
try:
context_examples = read_squad_examples(
context_only=True,
input_file=predict_file, is_training=False, draft=args.draft,
draft_num_examples=args.draft_num_examples)
for example in context_examples:
example.doc_idx += offset
context_features = convert_documents_to_features(
examples=context_examples,
tokenizer=tokenizer,
max_seq_length=args.max_seq_length,
doc_stride=args.doc_stride)
logger.info("***** Running indexing on %s *****" % predict_file)
logger.info(" Num orig examples = %d", len(context_examples))
logger.info(" Num split examples = %d", len(context_features))
logger.info(" Batch size = %d", args.predict_batch_size)
all_input_ids = torch.tensor([f.input_ids for f in context_features], dtype=torch.long)
all_input_mask = torch.tensor([f.input_mask for f in context_features], dtype=torch.long)
all_example_index = torch.arange(all_input_ids.size(0), dtype=torch.long)
if args.fp16:
all_input_ids, all_input_mask, all_example_index = tuple(
t.half() for t in (all_input_ids, all_input_mask, all_example_index))
context_data = TensorDataset(all_input_ids, all_input_mask, all_example_index)
if args.local_rank == -1:
context_sampler = SequentialSampler(context_data)
else:
context_sampler = DistributedSampler(context_data)
context_dataloader = DataLoader(context_data, sampler=context_sampler,
batch_size=args.predict_batch_size)
model.eval()
logger.info("Start indexing")
def get_context_results():
for (input_ids, input_mask, example_indices) in context_dataloader:
input_ids = input_ids.to(device)
input_mask = input_mask.to(device)
with torch.no_grad():
batch_start, batch_end, batch_span_logits, bs, be, batch_sparse = model(input_ids,
input_mask)
for i, example_index in enumerate(example_indices):
start = batch_start[i].detach().cpu().numpy().astype(args.dtype)
end = batch_end[i].detach().cpu().numpy().astype(args.dtype)
sparse = None
if batch_sparse is not None:
sparse = batch_sparse[i].detach().cpu().numpy().astype(args.dtype)
span_logits = batch_span_logits[i].detach().cpu().numpy().astype(args.dtype)
filter_start_logits = bs[i].detach().cpu().numpy().astype(args.dtype)
filter_end_logits = be[i].detach().cpu().numpy().astype(args.dtype)
context_feature = context_features[example_index.item()]
unique_id = int(context_feature.unique_id)
yield ContextResult(unique_id=unique_id,
start=start,
end=end,
span_logits=span_logits,
filter_start_logits=filter_start_logits,
filter_end_logits=filter_end_logits,
sparse=sparse)
t0 = time()
write_hdf5(context_examples, context_features, get_context_results(),
args.max_answer_length, not args.do_case, args.index_file, args.filter_threshold,
args.verbose_logging,
offset=args.compression_offset, scale=args.compression_scale,
split_by_para=args.split_by_para,
use_sparse=args.use_sparse)
print('%s: %.1f mins' % (predict_file, (time() - t0) / 60))
except Exception as e:
with open(os.path.join(args.output_dir, 'error_files.txt'), 'a') as fp:
fp.write('error file: %s\n' % predict_file)
fp.write('error message: %s\n' % str(e))
if args.do_serve:
def get(text):
question_examples = [SquadExample(qas_id='serve', question_text=text)]
query_eval_features = convert_questions_to_features(
examples=question_examples,
tokenizer=tokenizer,
max_query_length=16)
question_dataloader = convert_question_features_to_dataloader(query_eval_features, args.fp16,
args.local_rank,
args.predict_batch_size)
model.eval()
question_results = get_question_results_(question_examples, query_eval_features, question_dataloader,
device, model)
question_result = next(iter(question_results))
out = question_result.start.tolist(), question_result.end.tolist(), question_result.span_logit.tolist()
return out
serve(get, args.port)