def loaders(self,
batch_size: int,
shuffle_train=False,
shuffle_test=False,
num_workers: int = 0) -> (DataLoader, DataLoader):
# Use BucketSampler for sampling
train_sampler = BucketBatchSampler(self.train_set,
batch_size=batch_size,
drop_last=True,
sort_key=lambda r: len(r['text']))
test_sampler = BucketBatchSampler(self.test_set,
batch_size=batch_size,
drop_last=True,
sort_key=lambda r: len(r['text']))
print("trainset", self.train_set)
train_loader = DataLoader(dataset=self.train_set,
batch_sampler=train_sampler,
collate_fn=collate_fn,
num_workers=num_workers)
test_loader = DataLoader(dataset=self.test_set,
batch_sampler=test_sampler,
collate_fn=collate_fn,
num_workers=num_workers)
return train_loader, test_loader
def test_bucket_batch_sampler_uneven():
data_source = [[1], [2], [3], [4], [5]]
sort_key = lambda r: len(r)
batch_size = 2
sampler = BucketBatchSampler(
data_source, batch_size, sort_key=sort_key, drop_last=False, bucket_size_multiplier=2)
batches = list(sampler)
assert len(batches) == 3
assert len(sampler) == 3
sampler = BucketBatchSampler(
data_source, batch_size, sort_key=sort_key, drop_last=True, bucket_size_multiplier=2)
batches = list(sampler)
assert len(batches) == 2
assert len(sampler) == 2
def test_pickleable():
sampler = SequentialSampler(list(range(10)))
batch_sampler = BucketBatchSampler(sampler,
batch_size=2,
drop_last=False,
bucket_size_multiplier=2)
pickle.dumps(batch_sampler)
def get_data_loader(sampler_name, dataset, batch_size, max_tokens, num_workers,
shuffle):
kwargs_test = {}
if sampler_name == "bucket":
sampler = BucketBatchSampler(
SequentialSampler(dataset),
batch_size=batch_size,
drop_last=False,
sort_key=lambda i: len(dataset.datasets.iloc[i]["src"].split()))
elif sampler_name == "maxtokens":
sampler = MaxTokensBatchSampler(
SequentialSampler(dataset),
shuffle=shuffle,
batch_size=batch_size,
max_tokens=max_tokens,
drop_last=False,
sort_key=lambda i: len(dataset.datasets.iloc[i]["src"].split()))
else:
sampler = None
kwargs_test = {"batch_size": batch_size, "shuffle": shuffle}
# Define dataloader
data_loader = DataLoader(
dataset,
num_workers=num_workers,
collate_fn=lambda x: TranslationDataset.collate_fn(x, max_tokens),
pin_memory=True,
batch_sampler=sampler,
**kwargs_test)
return data_loader
def test_bucket_batch_sampler__drop_last():
sampler = SequentialSampler(list(range(10)))
batch_sampler = BucketBatchSampler(sampler,
batch_size=3,
drop_last=True,
bucket_size_multiplier=2)
assert len(batch_sampler) == 3
assert len(list(iter(batch_sampler))) == 3
def test_bucket_batch_sampler():
sampler = SequentialSampler(list(range(10)))
batch_sampler = BucketBatchSampler(sampler,
batch_size=3,
drop_last=False,
bucket_size_multiplier=2)
assert len(batch_sampler) == 4
assert list(batch_sampler) == [[0, 1, 2], [3, 4, 5], [9], [6, 7, 8]]
def test_bucket_batch_sampler_last_batch_first():
data_source = [torch.tensor([j for j in range(i)]) for i in range(100)]
sort_key = lambda r: len(r)
batch_size = 1
batches = list(
BucketBatchSampler(
data_source, batch_size, sort_key=sort_key, drop_last=False, bucket_size_multiplier=2))
# Largest batch (4) is in first batch
assert 99 == batches[0][0]
def test_bucket_batch_sampler():
data_source = [[1], [2], [3], [4], [5], [6]]
sort_key = lambda r: len(r)
batch_size = 2
batches = list(
BucketBatchSampler(data_source,
batch_size,
sort_key,
bucket_size_multiplier=2))
assert len(batches) == 3
def main(args):
"""
Main training routine specific for this project
:param hparams:
"""
if args.train_file is not None and args.dev_file is not None:
if (args.load_checkpoint):
model = StreamingPunctuatorModel.load_from_checkpoint(args.load_checkpoint, **vars(args))
else:
model = StreamingPunctuatorModel(**vars(args))
batch_size = args.batch_size
train_dataset = PunctuationDataset(tokenizer=model.tokenizer, filename=args.train_file, label_delay=args.label_delay)
dev_dataset = PunctuationDataset(tokenizer=model.tokenizer, filename=args.dev_file, label_delay=args.label_delay)
random_sampler = RandomSampler(train_dataset)
batch_iterator = BucketBatchSampler(random_sampler, batch_size=batch_size, drop_last=False, sort_key=lambda i: train_dataset[i]["length"], bucket_size_multiplier=100)
train_loader = torch.utils.data.DataLoader(train_dataset, batch_sampler=batch_iterator, collate_fn=train_dataset.collate_batch, num_workers=8)
dev_loader = torch.utils.data.DataLoader(
dataset=dev_dataset,
batch_size=batch_size,
shuffle=False,
collate_fn=dev_dataset.collate_batch,
num_workers=2)
checkpoint_callback = ModelCheckpoint(
save_top_k=4,
save_last=True,
verbose=True,
monitor='val_f1',
mode='max',
prefix=''
)
trainer = Trainer.from_argparse_args(args,
checkpoint_callback=checkpoint_callback,
callbacks=[
])
trainer.fit(model, train_dataloader=train_loader,
val_dataloaders=dev_loader)
elif args.process_stdin and args.load_checkpoint is not None:
model = StreamingPunctuatorModel.load_from_checkpoint(args.load_checkpoint)
while True:
l = sys.stdin.readline()
if not l: break
print(model.process_line(l.strip()))
sys.stdout.flush()
else:
raise Exception("Either --train-file and --dev-file or --process-stdin and --load-checkpoint should be specified")
def get_data_loader(data,
batch_size,
drop_last,
collate_fn=collate_fn_eval_base):
sampler = BucketBatchSampler(data,
batch_size,
drop_last=drop_last,
sort_key=lambda row: -len(row['word_ids']))
loader = DataLoader(data, batch_sampler=sampler, collate_fn=collate_fn)
return loader
def test_bucket_batch_sampler_last_batch_first():
data_source = [[1], [2], [3], [4], [5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]]
sort_key = lambda r: len(r)
batch_size = 2
batches = list(
BucketBatchSampler(data_source,
batch_size,
sort_key,
biggest_batches_first=True,
bucket_size_multiplier=2))
# Largest batch (4) is in first batch
assert 4 in batches[0]
def test_bucket_batch_sampler_uneven_length():
data_source = [[1], [2], [3], [4], [5]]
sort_key = lambda i: len(data_source[i])
batch_size = 2
sampler = SequentialSampler(data_source)
batch_sampler = BucketBatchSampler(sampler,
batch_size,
sort_key=sort_key,
drop_last=False,
bucket_size_multiplier=2)
batches = list(batch_sampler)
assert len(batches) == 3
assert len(batch_sampler) == 3
batch_sampler = BucketBatchSampler(sampler,
batch_size,
sort_key=sort_key,
drop_last=True,
bucket_size_multiplier=2)
batches = list(batch_sampler)
assert len(batches) == 2
assert len(batch_sampler) == 2
def test_bucket_batch_sampler_sorted():
data_source = [[1], [2], [3], [4], [5]]
sort_key = lambda i: data_source[i]
batch_size = len(data_source)
sampler = SequentialSampler(data_source)
batches = list(
BucketBatchSampler(sampler,
batch_size,
sort_key=sort_key,
drop_last=False,
bucket_size_multiplier=1))
for i, batch in enumerate(batches):
assert batch[0] == i
def test_bucket_batch_sampler_sorted():
data_source = [[1], [2], [3], [4], [5]]
sort_key = lambda r: r[0]
batch_size = len(data_source)
batches = list(
BucketBatchSampler(data_source,
batch_size,
sort_key,
biggest_batches_first=False,
bucket_size_multiplier=1))
# Largest batch (4) is in first batch
for i, batch in enumerate(batches):
assert batch[0] == i
def get_data_loader(data, batch_size, drop_last, use_rnn, is_train=False):
# if is_train:
sampler = BucketBatchSampler(data,
batch_size,
drop_last=drop_last,
sort_key=lambda row: -len(row["sents"]))
# else:
# sampler = SequentialSampler(data)
collate_fn = collate_fn_rnn if use_rnn else collate_fn_transformer
loader = DataLoader(data,
batch_sampler=sampler,
collate_fn=collate_fn,
pin_memory=False)
# shuffle=True,
# num_workers=1)
return loader
def test_dataloader(self):
tokenizer = Tokenizer.from_file("test/tokenizer.json")
tokenizer.add_special_tokens(["<s>", "</s>"])
dataset = PunctuationDataset(tokenizer, "test/dev.txt")
batch_size = 8
random_sampler = RandomSampler(dataset)
batch_iterator = BucketBatchSampler(random_sampler, batch_size=batch_size, drop_last=False, sort_key=lambda x: dataset[x]["length"], bucket_size_multiplier=100)
dataloader = torch.utils.data.DataLoader(dataset, batch_sampler=batch_iterator, collate_fn=dataset.collate_batch)
for i in range(2):
print(f"Testing epoch {i}")
for j, batch in enumerate(dataloader):
if j == 0:
# make sure that the length difference inside a batch is not > 20%
self.assertTrue((batch["lengths"].max() - batch["lengths"].min()) / batch["lengths"].max() < 0.2 )
def train_dataloader(self) -> torch.utils.data.DataLoader:
"""Return a PyTorch DataLoader for the training set.
Requires calling ``prepare_data`` beforehand.
Return:
PyTorch DataLoader
"""
sampler = BucketBatchSampler(
RandomSampler(self.train_dataset),
batch_size=self.config.batch_size.train,
drop_last=False,
sort_key=lambda sample: len(self.train_dataset[sample][const.TARGET
].split()),
# bucket_size_multiplier=100,
)
return torch.utils.data.DataLoader(
self.train_dataset,
batch_sampler=sampler,
num_workers=self.config.num_data_workers,
collate_fn=self.data_encoders.collate_fn,
pin_memory=torch.cuda.is_initialized(), # NOQA
)
dev_log_template = ' '.join(
'{:>6.0f},{:>5.0f},{:>9.0f},{:>5.0f}/{:<5.0f} {:>7.0f}%,{:>8.6f},{:8.6f},{:12.4f},{:12.4f}'
.split(','))
log_template = ' '.join(
'{:>6.0f},{:>5.0f},{:>9.0f},{:>5.0f}/{:<5.0f} {:>7.0f}%,{:>8.6f},{},{:12.4f},{}'
.split(','))
makedirs(args.save_path)
print(header)
for epoch in range(args.epochs):
n_correct, n_total = 0, 0
train_sampler = SequentialSampler(train)
train_batch_sampler = BucketBatchSampler(
train_sampler,
args.batch_size,
True,
sort_key=lambda r: len(train[r]['premise']))
train_iterator = DataLoader(train,
batch_sampler=train_batch_sampler,
collate_fn=collate_fn,
pin_memory=torch.cuda.is_available(),
num_workers=0)
for batch_idx, (premise_batch, hypothesis_batch,
label_batch) in enumerate(train_iterator):
# switch model to training mode, clear gradient accumulators
model.train()
torch.set_grad_enabled(True)
opt.zero_grad()
TEXT_LENGTH = opt.text_length
ROUTING_TYPE = opt.routing_type
NUM_ITERATIONS = opt.num_iterations
BATCH_SIZE = opt.batch_size
MODEL_WEIGHT = opt.load_model_weight
GPU = opt.gpu
vocab_size, num_class, test_dataset = load_data(data_type='custom',
preprocessing=False,
fine_grained=FINE_GRAINED,
verbose=True,
text_length=TEXT_LENGTH)
print("[!] vocab_size: {}, num_class: {}".format(vocab_size, num_class))
test_sampler = BucketBatchSampler(test_dataset,
BATCH_SIZE,
False,
sort_key=lambda row: len(row['text']))
test_iterator = DataLoader(test_dataset,
batch_sampler=test_sampler,
collate_fn=collate_fn)
model = Model(vocab_size,
num_class=num_class,
routing_type=ROUTING_TYPE,
num_iterations=NUM_ITERATIONS)
if MODEL_WEIGHT is not None:
model.load_state_dict(torch.load('epochs/' + MODEL_WEIGHT))
margin_loss, focal_loss = MarginLoss(), FocalLoss()
if torch.cuda.is_available():
model, margin_loss, focal_loss = model.to(
'cuda:{}'.format(GPU)), margin_loss.to(
iterations = 0
start = time.time()
best_dev_acc = -1
header = ' Time Epoch Iteration Progress (%Epoch) Loss Dev/Loss Accuracy Dev/Accuracy'
dev_log_template = ' '.join(
'{:>6.0f},{:>5.0f},{:>9.0f},{:>5.0f}/{:<5.0f} {:>7.0f}%,{:>8.6f},{:8.6f},{:12.4f},{:12.4f}'
.split(','))
log_template = ' '.join(
'{:>6.0f},{:>5.0f},{:>9.0f},{:>5.0f}/{:<5.0f} {:>7.0f}%,{:>8.6f},{},{:12.4f},{}'.split(','))
makedirs(args.save_path)
print(header)
for epoch in range(args.epochs):
n_correct, n_total = 0, 0
train_sampler = BucketBatchSampler(
train, args.batch_size, True, sort_key=lambda r: len(row['premise']))
train_iterator = DataLoader(
train,
batch_sampler=train_sampler,
collate_fn=collate_fn,
pin_memory=torch.cuda.is_available(),
num_workers=0)
for batch_idx, (premise_batch, hypothesis_batch, label_batch) in enumerate(train_iterator):
# switch model to training mode, clear gradient accumulators
model.train()
torch.set_grad_enabled(True)
opt.zero_grad()
iterations += 1
def test_pickleable():
data_source = [[1], [2], [3], [4], [5]]
sampler = BucketBatchSampler(data_source, batch_size=2, drop_last=False)
pickle.dumps(sampler)
def run_experiment(datapath,
src,
trg,
model_name,
domain=None,
smart_batch=False):
start_time = time.time()
###########################################################################
###########################################################################
wandb.init(project=WANDB_PROJECT, entity='salvacarrion', reinit=True)
config = wandb.config
config.model_name = MODEL_NAME
config.domain = domain
config.max_epochs = MAX_EPOCHS
config.learning_rate = LEARNING_RATE
config.batch_size = BATCH_SIZE
config.max_tokens = MAX_TOKENS
config.warmup_updates = WARMUP_UPDATES
config.patience = PATIENCE
config.acc_gradients = ACC_GRADIENTS
config.weight_decay = WEIGHT_DECAY
config.clip_gradients = CLIP_GRADIENTS
config.multigpu = MULTIGPU
config.device1 = str(DEVICE1)
config.device2 = str(DEVICE2)
config.num_workers = NUM_WORKERS
config.tok_model = TOK_MODEL
config.tok_size = TOK_SIZE
config.tok_folder = TOK_FOLDER
config.lowercase = LOWERCASE
config.truncate = TRUNCATE
config.max_length_truncate = MAX_LENGTH_TRUNC
config.sampler_name = str(SAMPLER_NAME)
print(config)
###########################################################################
###########################################################################
checkpoint_path = os.path.join(datapath, DATASET_CHECKPOINT_NAME,
f"{model_name}_{domain}_acc")
# Load tokenizers
src_tok, trg_tok = helpers.get_tokenizers(os.path.join(
datapath, DATASET_TOK_NAME, TOK_FOLDER),
src,
trg,
tok_model=TOK_MODEL,
lower=LOWERCASE,
truncation=TRUNCATE,
max_length=MAX_LENGTH_TRUNC)
# Load dataset
datapath_clean = DATASET_CLEAN_SORTED_NAME if smart_batch else DATASET_CLEAN_NAME
if TOK_MODEL == "bpe": # Do not preprocess again when using bpe
src_tok.apply_bpe = False
trg_tok.apply_bpe = False
datapath_clean = os.path.join(DATASET_TOK_NAME, TOK_FOLDER)
train_ds = TranslationDataset(os.path.join(datapath, datapath_clean),
src_tok, trg_tok, "train")
val_ds = TranslationDataset(os.path.join(datapath, datapath_clean),
src_tok, trg_tok, "val")
# Build dataloaders
kwargs_train = {}
kwargs_val = {}
if SAMPLER_NAME == "bucket":
train_sampler = BucketBatchSampler(
SequentialSampler(train_ds),
batch_size=BATCH_SIZE,
drop_last=False,
sort_key=lambda i: len_func(train_ds, i))
val_sampler = BucketBatchSampler(
SequentialSampler(val_ds),
batch_size=BATCH_SIZE,
drop_last=False,
sort_key=lambda i: len_func(val_ds, i))
elif SAMPLER_NAME == "maxtokens":
train_sampler = MaxTokensBatchSampler(
SequentialSampler(train_ds),
shuffle=True,
batch_size=BATCH_SIZE,
max_tokens=MAX_TOKENS,
drop_last=False,
sort_key=lambda i: len_func(train_ds, i))
val_sampler = MaxTokensBatchSampler(
SequentialSampler(val_ds),
shuffle=False,
batch_size=BATCH_SIZE,
max_tokens=MAX_TOKENS,
drop_last=False,
sort_key=lambda i: len_func(val_ds, i))
else:
train_sampler = val_sampler = None
kwargs_train = {"batch_size": BATCH_SIZE, "shuffle": True}
kwargs_val = {"batch_size": BATCH_SIZE, "shuffle": False}
# Define dataloader
train_loader = DataLoader(
train_ds,
num_workers=NUM_WORKERS,
collate_fn=lambda x: TranslationDataset.collate_fn(x, MAX_TOKENS),
pin_memory=True,
batch_sampler=train_sampler,
**kwargs_train)
val_loader = DataLoader(
val_ds,
num_workers=NUM_WORKERS,
collate_fn=lambda x: TranslationDataset.collate_fn(x, MAX_TOKENS),
pin_memory=True,
batch_sampler=val_sampler,
**kwargs_val)
# Instantiate model #1
model = Transformer(d_model=256,
enc_layers=3,
dec_layers=3,
enc_heads=8,
dec_heads=8,
enc_dff_dim=512,
dec_dff_dim=512,
enc_dropout=0.1,
dec_dropout=0.1,
max_src_len=2000,
max_trg_len=2000,
src_tok=src_tok,
trg_tok=trg_tok,
static_pos_emb=True) #.to(DEVICE1)
model.apply(initialize_weights)
print(f'The model has {model.count_parameters():,} trainable parameters')
criterion = nn.CrossEntropyLoss(
ignore_index=trg_tok.word2idx[trg_tok.PAD_WORD])
optimizer = torch.optim.Adam(model.parameters(), lr=LEARNING_RATE)
# Load weights
# checkpoint_path = os.path.join(datapath, DATASET_CHECKPOINT_NAME, "transformer_multi30k_best_new.pt")
# print(f"Loading weights from: {checkpoint_path}")
# model.load_state_dict(torch.load(checkpoint_path))
# Tensorboard (it needs some epochs to start working ~10-20)
tb_writer = SummaryWriter(
os.path.join(datapath, DATASET_LOGS_NAME, f"{model_name}"))
wandb.watch(model)
# Prepare model and data for acceleration
model, optimizer, train_loader, val_loader = accelerator.prepare(
model, optimizer, train_loader, val_loader)
# Train and validate model
fit(model,
optimizer,
train_loader=train_loader,
val_loader=val_loader,
epochs=MAX_EPOCHS,
criterion=criterion,
checkpoint_path=checkpoint_path,
src_tok=src_tok,
trg_tok=trg_tok,
tb_writer=tb_writer)
print("************************************************************")
epoch_hours, epoch_mins, epoch_secs = helpers.epoch_time(
start_time, end_time=time.time())
print(f'Time experiment: {epoch_hours}h {epoch_mins}m {epoch_secs}s')
print("************************************************************")
print("Done!")
def train(arg):
version = arg.version
device = arg.device
block = arg.block
batch_size = arg.batch_size
eval_batch_size = arg.eval_batch_size
epoch_num = arg.epoch_num
learning_rate = arg.learning_rate
early_stop_epoch = arg.early_stop_epoch
valid_sample_num = arg.valid_sample_num
train_sample_num = arg.train_sample_num
max_len = arg.max_len
POSSIBLE_BATCH_SIZE = arg.possible_batch_size
# build collate_fn function
def my_collate_fn(data):
# x, pad_id = 1
# bert, pad_id = 0, cls = 101, seq = 102
length = max(d[0].shape[0] for d in data)
length = min(max_len, length)
x = np.empty([len(data), length + 2], dtype=np.int64)
x.fill(0)
x[:, 0] = 101
x[:, -1] = 102
for i, d in enumerate(data):
l = min(d[0].shape[0], max_len)
x[i, 1:l + 1] = d[0][-l:]
y = np.vstack([d[1] for d in data])
# turn to torch tensor
x = torch.LongTensor(x)
y = torch.FloatTensor(y)
return x, y
# load data
dl_model_dir = os.path.join(model_dir, arg.data_name, "bert", version)
data_cached_path = os.path.join(dl_model_dir, "data.h5")
os.makedirs(dl_model_dir, exist_ok=True)
print(f"output model and all the info to '{dl_model_dir}'")
# save config
with open(os.path.join(dl_model_dir, "config.json"), 'w',
encoding='utf-8') as outfile:
json.dump(
{
"block": block,
"batch_size": batch_size,
"epoch_num": epoch_num,
"learning_rate": learning_rate,
"early_stop_epoch": early_stop_epoch,
"valid_sample_num": valid_sample_num,
"train_sample_num": train_sample_num,
"max_len": max_len,
},
outfile,
indent=4)
if arg.data_name == "bookcorpus":
if arg.history == 1:
_, x_train, y_train = load_text_data(block=block,
phase="train",
target_model=arg.model_type,
verbose=True)
_, x_valid, y_valid = load_text_data(block=block,
phase="valid",
target_model=arg.model_type,
verbose=True)
_, x_test, y_test = load_text_data(block=block,
phase="test",
target_model=arg.model_type,
verbose=True)
else:
_, x_train, y_train = load_text_data_long(
block=block,
phase="train",
target_model=arg.model_type,
verbose=True,
history=arg.history)
_, x_valid, y_valid = load_text_data_long(
block=block,
phase="valid",
target_model=arg.model_type,
verbose=True,
history=arg.history)
_, x_test, y_test = load_text_data_long(
block=block,
phase="test",
target_model=arg.model_type,
verbose=True,
history=arg.history)
elif arg.data_name == "coda19":
_, x_train, y_train = coda_load_text_data(block=block,
phase="train",
target_model=arg.model_type,
verbose=True)
_, x_valid, y_valid = coda_load_text_data(block=block,
phase="valid",
target_model=arg.model_type,
verbose=True)
_, x_test, y_test = coda_load_text_data(block=block,
phase="test",
target_model=arg.model_type,
verbose=True)
else:
print(f"{arg.data_name} not supported yet!")
quit()
if arg.downsample != -1:
random_index = np.random.RandomState(5516).permutation(
x_train.shape[0])[:arg.downsample]
x_train, y_train = x_train[random_index], y_train[random_index]
random_index = np.random.permutation(x_valid.shape[0])[:valid_sample_num]
x_valid, y_valid = x_valid[random_index], y_valid[random_index]
random_index = np.random.permutation(x_test.shape[0])[:]
x_test, y_test = x_test[random_index], y_test[random_index]
print("Train", x_train.shape, y_train.shape)
print("Test", x_test.shape, y_test.shape)
print("Valid", x_valid.shape, y_valid.shape)
x_valid, x_test = x_valid.tolist(), x_test.tolist()
validation = data.DataLoader(
StoryDataset(x_valid, y_valid),
batch_sampler=BucketBatchSampler(
torch.utils.data.sampler.SequentialSampler(x_valid),
batch_size=batch_size,
drop_last=True,
sort_key=lambda i: x_valid[i].shape[0],
bucket_size_multiplier=100),
num_workers=3,
collate_fn=my_collate_fn,
)
testing = data.DataLoader(
StoryDataset(x_test, y_test),
batch_sampler=BucketBatchSampler(
torch.utils.data.sampler.SequentialSampler(x_test),
batch_size=batch_size,
drop_last=True,
sort_key=lambda i: x_test[i].shape[0],
bucket_size_multiplier=100),
num_workers=3,
collate_fn=my_collate_fn,
)
if arg.model_type == "bert":
model = BertRegressor(output_size=y_train.shape[1])
elif arg.model_type == "scibert":
pretrained_model = AutoModel.from_pretrained(
"allenai/scibert_scivocab_uncased")
pretrained_config = AutoConfig.from_pretrained(
"allenai/scibert_scivocab_uncased")
model = BertRegressor(output_size=y_train.shape[1],
model=pretrained_model,
config=pretrained_config)
model.to(device)
optimizer = torch.optim.Adam(model.parameters(), lr=learning_rate)
loss_function = lambda y_pred, y_batch: 1 - F.cosine_similarity(
y_pred, y_batch).mean()
best_epoch = 0
best_cosine = 0.0
stopper = EarlyStop(mode="max", history=early_stop_epoch)
for epoch in range(1, epoch_num + 1):
# generate data
if arg.downsample == -1 or arg.downsample > train_sample_num:
random_index = np.random.permutation(
x_train.shape[0])[:train_sample_num]
x_train_epoch, y_train_epoch = x_train[random_index], y_train[
random_index]
x_train_epoch = x_train_epoch.tolist()
else:
x_train_epoch, y_train_epoch = x_train, y_train
x_train_epoch = x_train_epoch.tolist()
training = data.DataLoader(
StoryDataset(x_train_epoch, y_train_epoch),
batch_sampler=BucketBatchSampler(
torch.utils.data.sampler.SequentialSampler(x_train_epoch),
batch_size=batch_size
if POSSIBLE_BATCH_SIZE == -1 else POSSIBLE_BATCH_SIZE,
drop_last=True,
sort_key=lambda i: x_train_epoch[i].shape[0],
bucket_size_multiplier=100),
num_workers=3,
collate_fn=my_collate_fn,
)
# training
model.train()
total_loss = 0
total_acc = 0
total_count = len(
training.dataset) // training.batch_sampler.batch_size
error_case = 0
if POSSIBLE_BATCH_SIZE != -1:
accumulation_steps = batch_size // POSSIBLE_BATCH_SIZE
for count, (x_batch, y_batch) in enumerate(training, 1):
x_batch = x_batch.to(device)
y_batch = y_batch.to(device)
try:
y_pred = model(x_batch)
loss = loss_function(y_pred, y_batch)
loss.backward()
total_loss += loss.item()
if POSSIBLE_BATCH_SIZE == -1:
optimizer.step()
optimizer.zero_grad()
elif count % accumulation_steps == 0:
optimizer.step()
optimizer.zero_grad()
except RuntimeError:
#print(x_batch.shape, y_batch.shape)
error_case += 1
continue
# compute cosine
total_acc += F.cosine_similarity(y_pred, y_batch,
dim=1).mean().item()
print(
"\x1b[2K\rEpoch: {} / {} [{:.2f}%] Loss: {:.5f} Acc: {:.5f} Error: {}"
.format(epoch, epoch_num, 100.0 * count / total_count,
total_loss / count, total_acc / count, error_case),
end="")
print()
if epoch % 1 == 0:
cosine = evaluate(model, validation, device=device)
if cosine > best_cosine:
best_model = copy.deepcopy(model.state_dict())
best_cosine = cosine
best_epoch = epoch
# check early stopping
if stopper.check(cosine):
print("Early Stopping at Epoch = ", epoch)
break
# finish training
print("Loading model from epoch {}".format(best_epoch))
torch.save(best_model, os.path.join(dl_model_dir, "best_model.pt"))
model.load_state_dict(best_model)
test_cosine = evaluate(model, testing, device)
print("Testing Cosine = ", test_cosine)
with open(os.path.join(dl_model_dir, "result.json"), 'w',
encoding='utf-8') as outfile:
json.dump(
{
"cosine": float(test_cosine),
"best_cosine": float(best_cosine),
"best_epoch": best_epoch,
"max_len": max_len,
},
outfile,
indent=4)
def train_f(config):
run_name = 'run_%d' % run_config['run']
run_config['run'] = run_config['run'] + 1
visdom_logger.new_run(run_name)
model_path = Path('/tmp/models/')
delete_checkpoint(model_path)
train_batch_sampler = FlexibleBucketBatchSampler(
train,
config.batch_size,
sampler=train_sampler,
drop_last=True,
sort_key=lambda r: len(row['text']))
train_loader = DataLoader(train,
batch_sampler=train_batch_sampler,
collate_fn=collate_fn,
pin_memory=config.use_cuda,
num_workers=0)
dev_batch_sampler = FlexibleBucketBatchSampler(
train,
config.test_batch_size,
drop_last=True,
sampler=dev_sampler,
sort_key=lambda r: len(row['text']))
dev_loader = DataLoader(train,
batch_sampler=dev_batch_sampler,
collate_fn=collate_fn,
pin_memory=config.use_cuda,
num_workers=0)
test_sampler = BucketBatchSampler(test,
config.test_batch_size,
drop_last=True,
sort_key=lambda r: len(row['text']))
test_loader = DataLoader(test,
batch_sampler=test_sampler,
collate_fn=collate_fn,
pin_memory=config.use_cuda,
num_workers=0)
embedding = nn.Embedding(text_encoder.vocab_size, config.d_embedding)
if config.word_vectors_freeze:
embedding.weight.requires_grad = False
if config.word_vectors:
# Load word vectors
word_vectors = word_to_vector.aliases[config.word_vectors](
cache=config.vector_cache_dir)
for i, token in enumerate(text_encoder.vocab):
embedding.weight.data[i] = word_vectors[token]
print(
'Found vectors for %d tokens in vocabulary' %
len([t for t in text_encoder.vocab if t in word_vectors.stoi]))
model = LSTMClassifier(d_in=embedding.embedding_dim,
d_out=label_encoder.vocab_size,
d_hidden=config.d_hidden,
dropout=config.dropout,
embedding=embedding)
model.to(device)
optimizer_params = list(
filter(lambda p: p.requires_grad, model.parameters()))
optimizer = torch.optim.SGD(optimizer_params,
lr=config.lr,
momentum=config.momentum)
trainer = create_supervised_trainer(model,
optimizer,
F.nll_loss,
device=device)
evaluator_train = \
create_supervised_evaluator(model,
metrics={
'accuracy': CategoricalAccuracy(),
'nll': Loss(F.nll_loss)},
device=device)
evaluator_dev = \
create_supervised_evaluator(model,
metrics={
'accuracy': CategoricalAccuracy(),
'nll': Loss(F.nll_loss)},
device=device)
visdom_logger.attach_trainer(trainer)
visdom_logger.attach_evaluator(evaluator_train, trainer, phase='train')
visdom_logger.attach_evaluator(evaluator_dev, trainer, phase='dev')
lr_scheduler = torch.optim.lr_scheduler.LambdaLR(
optimizer, lambda epoch_: 1. / (1 + config.lr_decay *
(epoch_ - 1)))
# scoring function for early stopping and checkpointing
def score_function(engine):
dev_loss = engine.state.metrics['nll']
return -dev_loss
early_stopping = EarlyStopping(patience=15,
score_function=score_function,
trainer=trainer)
def checkpoint_score_function(engine):
dev_accuracy = engine.state.metrics['accuracy']
return dev_accuracy
checkpoint = ModelCheckpoint('/tmp/models',
'checkpoint',
score_function=checkpoint_score_function,
n_saved=1,
create_dir=True,
score_name="dev_accuracy")
# lets train!
train_model(
model=model,
trainer=trainer,
epochs=config.epochs,
evaluator_train=evaluator_train,
evaluator_dev=evaluator_dev,
train_loader=train_loader,
dev_loader=dev_loader,
lr_scheduler=lr_scheduler,
early_stopping=early_stopping if config.early_stopping else None,
checkpoint=checkpoint if config.checkpoint else None)
# load checkpointed (best) model and evaluate on test loader
model = torch.load(list(model_path.glob('checkpoint_model*.pth'))[0])
test_evaluator = \
create_supervised_evaluator(model,
metrics={
'accuracy': CategoricalAccuracy(),
'nll': Loss(F.nll_loss)},
device=device)
test_evaluator.run(test_loader)
metrics = test_evaluator.state.metrics
print("Test Results: Avg accuracy: {:.2f} Avg loss: {:.2f}".format(
metrics['accuracy'], metrics['nll']))
test_evaluator.run(dev_loader)
metrics = test_evaluator.state.metrics
return metrics['nll']
import xgboost as xgb
import pandas as pd
from torchnlp.encoders.text import WhitespaceEncoder
from torchnlp.samplers import BucketBatchSampler
from torchnlp.utils import collate_tensors
from torchnlp.encoders.text import stack_and_pad_tensors
from torchnlp.nn import LockedDropout
loaded_data = ["now this ain't funny", "so don't you dare laugh"]
encoder = WhitespaceEncoder(loaded_data)
encoded_data = [encoder.encode(example) for example in loaded_data]
print("encoded_data", encoded_data)
encoded_data = [torch.randn(2), torch.randn(3), torch.randn(4), torch.randn(5)]
train_sampler = torch.utils.data.sampler.SequentialSampler(encoded_data)
train_batch_sampler = BucketBatchSampler(
train_sampler,
batch_size=2,
drop_last=False,
sort_key=lambda i: encoded_data[i].shape[0])
batches = [[encoded_data[i] for i in batch] for batch in train_batch_sampler]
batches = [
collate_tensors(batch, stack_tensors=stack_and_pad_tensors)
for batch in batches
]
print("batches=", batches)
def main(params_file,
batch_size,
epochs,
model_file_name,
learning_rate=1e-3,
weight_decay=1e-5,
n_workers=6,
use_pretrained_embs=False):
use_cuda = torch.cuda.is_available()
device = torch.device("cuda:0" if use_cuda else "cpu")
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
seed = 0
torch.manual_seed(seed)
if torch.cuda.is_available():
torch.cuda.manual_seed_all(seed)
# Files to Load
train_json_file = './cleaned_datasets/intro_1_para/train.txt'
val_json_file = './cleaned_datasets/intro_1_para/val.txt'
word2vec_model_path = '/word2vec_100D.w2v'
print('[' + str(datetime.datetime.now()) + '] : Reading Files')
if use_pretrained_embs:
wordsModel = load_w2v_model(word2vec_model_path)
vocab = sorted(list(wordsModel.wv.vocab))
else:
vocab = None
print('[' + str(datetime.datetime.now()) + '] : Creating Dataset Objects')
train_dataset = WikiDataset.fromJsonFile(train_json_file,
vocab=vocab,
mode='train')
val_dataset = WikiDataset.fromJsonFile(
val_json_file,
text_encoder=train_dataset.text_encoder,
label_encoder=train_dataset.label_encoder,
vocab=train_dataset.text_encoder.vocab,
mode='train')
trainset = DataLoader(train_dataset,
num_workers=n_workers,
batch_sampler=BucketBatchSampler(
train_dataset.data['data'],
batch_size=batch_size,
drop_last=True,
sort_key=lambda a: -len(a['intro'].split())),
collate_fn=train_dataset.collate_fn)
valset = DataLoader(val_dataset,
num_workers=n_workers,
batch_sampler=BucketBatchSampler(
val_dataset.data['data'],
batch_size=batch_size,
drop_last=True,
sort_key=lambda a: -len(a['intro'].split())),
collate_fn=val_dataset.collate_fn)
print('[' + str(datetime.datetime.now()) + '] : Reading params_file')
with open(params_file, 'r') as stream:
params = yaml.load(stream)
params['emb_size'] = (train_dataset.vocab_size, 100)
params['num_classes'] = train_dataset.label_encoder.vocab_size
print('[' + str(datetime.datetime.now()) + '] : Creating Model Object')
classifier = create_model(params)
if use_pretrained_embs:
print('[' + str(datetime.datetime.now()) +
'] : Creating Embedding Matrix')
embedding_matrix = create_embedding_matrix(wordsModel, train_dataset)
classifier.embeddings.weight = nn.Parameter(embedding_matrix)
del embedding_matrix
classifier.to(device)
criterion = nn.CrossEntropyLoss(
weight=torch.tensor([0, 1.36 / 1, 1.36 / 0.36]).to(device))
optimizer = optim.Adam(classifier.parameters(),
lr=learning_rate,
weight_decay=weight_decay)
print('[' + str(datetime.datetime.now()) + '] : Training Model ...')
classifier = train_model(classifier, epochs, trainset, valset, criterion,
optimizer, device, model_file_name)
model_utils = {
'text_encoder': train_dataset.text_encoder,
'label_encoder': train_dataset.label_encoder
}
joblib.dump(model_utils, model_file_name + str('_model_utils.pkl'))
with open(params_file, 'w') as stream:
yaml.dump(params, stream)