def __init__(self):
""" Init the labeler module
@param p (float): p to use for dropout in the linear heads, 0.1 by default is consistant with
transformers.BertForSequenceClassification
@param clinical (boolean): True if Bio_Clinical BERT desired, False otherwise. Ignored if
pretrain_path is not None
@param freeze_embeddings (boolean): true to freeze bert embeddings during training
@param pretrain_path (string): path to load checkpoint from
"""
super(bert_labeler, self).__init__()
config = AutoConfig.from_pretrained('bert-base-uncased')
self.bert = AutoModel.from_config(config)
self.hidden_size = self.bert.pooler.dense.in_features
def load_bert_model(bert_hidden_size):
bert_config = AutoConfig.from_pretrained("model/",
hidden_size=bert_hidden_size)
bert_tokenizer = AutoTokenizer.from_pretrained('model/')
bert_model = AutoModel.from_config(
bert_config) # fom_pretrained değil from_config olacakmış :)
print("loaded bert model config: ", bert_model.config) # ok sonunda :)
for param in bert_model.parameters(
): # freeze bert model params (not bert training)
param.requires_grad = False
return bert_tokenizer, bert_model
def __init__(self,
model_name_or_path,
mapping_path,
config_name=None,
tokenizer_name=None,
cache_dir=None,
from_pretrained=False,
freeze_base_model=False,
fusion="max_pooling",
lambdas=[1, 1, 1]):
super(BertForDBpediaDocumentClassification, self).__init__()
# Initialize config, tokenizer and model (feature extractor)
self.base_model_config = AutoConfig.from_pretrained(
config_name if config_name is not None else model_name_or_path,
cache_dir=cache_dir,
)
self.tokenizer = AutoTokenizer.from_pretrained(
tokenizer_name if tokenizer_name else model_name_or_path,
cache_dir=cache_dir,
use_fast=True,
)
if from_pretrained:
self.base_model = AutoModel.from_config(
config=self.base_model_config)
else:
self.base_model = AutoModel.from_pretrained(
model_name_or_path,
from_tf=bool(".ckpt" in model_name_or_path),
config=self.base_model_config,
cache_dir=cache_dir,
)
# Fusion
if fusion not in ["max_pooling", "average_pooling", "sum"]:
raise ValueError(
f"Invalid fusion value. Expected one of ['max_pooling', 'average_pooling', 'sum'], got "
f"'{fusion}' instead.")
self.fusion = fusion
assert len(lambdas) == 3
self.lambdas = lambdas
# Freeze
if freeze_base_model:
for p in self.base_model.parameters():
p.requires_grad = False
# Intialize layers
with open(mapping_path, "r") as fin:
self.mapping = json.load(fin)
self._initialize_layers()
def test_from_pretrained_with_tuple_values(self):
# For the auto model mapping, FunnelConfig has two models: FunnelModel and FunnelBaseModel
model = AutoModel.from_pretrained("sgugger/funnel-random-tiny")
self.assertIsInstance(model, FunnelModel)
config = copy.deepcopy(model.config)
config.architectures = ["FunnelBaseModel"]
model = AutoModel.from_config(config)
self.assertIsInstance(model, FunnelBaseModel)
with tempfile.TemporaryDirectory() as tmp_dir:
model.save_pretrained(tmp_dir)
model = AutoModel.from_pretrained(tmp_dir)
self.assertIsInstance(model, FunnelBaseModel)
def test_add_adapter_fusion_different_config(self):
model = AutoModel.from_config(self.config())
model.eval()
# fusion between a and b should be possible whereas fusion between a and c should fail
model.add_adapter("a", config=PfeifferConfig(reduction_factor=16))
model.add_adapter("b", config=PfeifferConfig(reduction_factor=2))
model.add_adapter("c", config="houlsby")
# correct fusion
model.add_fusion(["a", "b"])
self.assertIn("a,b", model.config.adapter_fusion_models)
# failing fusion
self.assertRaises(ValueError, lambda: model.add_fusion(["a", "c"]))
def convert_to_transformers(self):
from transformers import DPRContextEncoder, DPRQuestionEncoder, AutoModel
if len(self.prediction_heads) != 1:
raise ValueError(
f"Currently conversion only works for models with a SINGLE prediction head. "
f"Your model has {len(self.prediction_heads)}")
if self.prediction_heads[0].model_type == "text_similarity":
# init model
if "dpr" in self.language_model1.model.config.model_type:
transformers_model1 = DPRQuestionEncoder(
config=self.language_model1.model.config)
else:
transformers_model1 = AutoModel.from_config(
config=self.language_model1.model.config)
if "dpr" in self.language_model2.model.config.model_type:
transformers_model2 = DPRContextEncoder(
config=self.language_model2.model.config)
else:
transformers_model2 = AutoModel.from_config(
config=self.language_model2.model.config)
# transfer weights for language model + prediction head
setattr(transformers_model1, transformers_model1.base_model_prefix,
self.language_model1.model)
setattr(transformers_model2, transformers_model2.base_model_prefix,
self.language_model2.model)
logger.warning("No prediction head weights are required for DPR")
else:
raise NotImplementedError(
f"FARM -> Transformers conversion is not supported yet for"
f" prediction heads of type {self.prediction_heads[0].model_type}"
)
pass
return transformers_model1, transformers_model2
def load(model_path: str):
""" Load the model from a file.
@param model_path (str): path to model
@return model (nn.Module): model with saved parameters
"""
params = torch.load(model_path,
map_location=lambda storage, loc: storage)
args = params['args']
bert_base_config = args['bert_config']
bert_base_model = AutoModel.from_config(bert_base_config)
model = BasicBertForClassification(bert_base_model, args['n_class'],
args['dropout_rate'])
model.load_state_dict(params['state_dict'])
return model
def __init__(self, hparams, config=None):
super().__init__()
self.save_hyperparameters(hparams)
if config is None:
self.transformer = AutoModel.from_pretrained(
self.hparams.transformer)
else:
self.transformer = AutoModel.from_config(config)
self.dropout = nn.Dropout(self.hparams.dropout)
hidden_size = self.transformer.config.hidden_size
self.classifier = BiaffineCRFClassifier(
hidden_size,
label_num=self.hparams.num_labels,
dropout=self.hparams.dropout,
hidden_size=self.hparams.hidden_size)
def test_add_adapter_multiple_reduction_factors(self):
model = AutoModel.from_config(self.config())
model.eval()
reduction_factor = {"1": 1, "default": 2}
for adapter_config in [
PfeifferConfig(reduction_factor=reduction_factor),
HoulsbyConfig(reduction_factor=reduction_factor),
]:
with self.subTest(model_class=model.__class__.__name__,
config=adapter_config.__class__.__name__):
name = adapter_config.__class__.__name__
model.add_adapter(name, config=adapter_config)
model.set_active_adapters([name])
# adapter is correctly added to config
self.assertTrue(name in model.config.adapters)
self.assertEqual(adapter_config,
model.config.adapters.get(name))
# TODO: Add this method to model classes.
def get_adapter_layer(idx):
if isinstance(model, RobertaModel):
adapter = model.encoder.layer[idx].output.adapters
elif isinstance(model, DistilBertModel):
adapter = model.transformer.layer[
idx].output_adapters.adapters
elif isinstance(model, BartModel) or isinstance(
model, MBartModel):
adapter = model.encoder.layers[
idx].output_adapters.adapters
elif isinstance(model, GPT2Model):
adapter = model.h[idx].output_adapters.adapters
else:
adapter = model.encoder.layer[idx].output.adapters
return (adapter.PfeifferConfig if isinstance(
adapter_config, PfeifferConfig) else
adapter.HoulsbyConfig)
self.assertEqual(
get_adapter_layer(0).adapter_down[0].in_features /
get_adapter_layer(0).adapter_down[0].out_features,
reduction_factor["default"],
)
self.assertEqual(
get_adapter_layer(1).adapter_down[0].in_features /
get_adapter_layer(1).adapter_down[0].out_features,
reduction_factor["1"],
)
def load(self) -> None:
if self.pretrained_bert:
log.info(f"From pretrained {self.pretrained_bert}.")
self.pretrained_bert = str(expand_path(self.pretrained_bert))
self.config = AutoConfig.from_pretrained(self.pretrained_bert,
output_hidden_states=True)
self.encoder = AutoModel.from_pretrained(self.pretrained_bert,
config=self.config)
elif self.bert_config_file and Path(self.bert_config_file).is_file():
self.config = AutoConfig.from_json_file(
str(expand_path(self.bert_config_file)))
self.encoder = AutoModel.from_config(config=self.bert_config)
else:
raise ConfigError("No pre-trained BERT model is given.")
self.encoder.to(self.device)
def from_bytes(self, bytes_data):
msg = srsly.msgpack_loads(bytes_data)
config_dict = msg["config"]
tok_dict = msg["tokenizer"]
if config_dict:
with make_tempdir() as temp_dir:
config_file = temp_dir / "config.json"
srsly.write_json(config_file, config_dict)
config = AutoConfig.from_pretrained(config_file)
for x, x_bytes in tok_dict.items():
Path(temp_dir / x).write_bytes(x_bytes)
tokenizer = AutoTokenizer.from_pretrained(str(temp_dir.absolute()))
vocab_file_contents = None
if hasattr(tokenizer, "vocab_file"):
vocab_file_name = tokenizer.vocab_files_names["vocab_file"]
vocab_file_path = str((temp_dir / vocab_file_name).absolute())
with open(vocab_file_path, "rb") as fileh:
vocab_file_contents = fileh.read()
transformer = AutoModel.from_config(config)
self._hfmodel = HFObjects(
tokenizer,
transformer,
vocab_file_contents,
SimpleFrozenDict(),
SimpleFrozenDict(),
)
self._model = transformer
filelike = BytesIO(msg["state"])
filelike.seek(0)
ops = get_current_ops()
if ops.device_type == "cpu":
map_location = "cpu"
else: # pragma: no cover
device_id = torch.cuda.current_device()
map_location = f"cuda:{device_id}"
self._model.load_state_dict(torch.load(filelike, map_location=map_location))
self._model.to(map_location)
else:
self._hfmodel = HFObjects(
None,
None,
None,
msg["_init_tokenizer_config"],
msg["_init_transformer_config"],
)
return self
def __init__(self, bert, opt):
super().__init__()
self.opt = opt
if opt.debug:
conf = AutoConfig.from_pretrained(opt.pretrained_bert_name)
self.bert = AutoModel.from_config(conf)
else:
self.bert = AutoModel.from_pretrained(
opt.pretrained_bert_name)
if not opt.no_gnn:
self.gcn = GNN_RELU_DIFF(opt.bert_dim, opt.bert_dim,
step=opt.gnn_step, drop=opt.dropout)
if not opt.no_short_cut:
self.layernorm = LayerNorm(opt.bert_dim)
if not opt.no_sa:
self.sa = SelfAttention(self.bert.config, opt)
self.drop = nn.Dropout(opt.dropout)
self.fc = nn.Linear(opt.bert_dim, opt.polarities_dim)
def __init__(self, hparams, loss_func=dep_loss, config=None):
super().__init__()
self.save_hyperparameters(hparams)
if config is None:
self.transformer = AutoModel.from_pretrained(
self.hparams.transformer)
else:
self.transformer = AutoModel.from_config(config)
self.dropout = nn.Dropout(self.hparams.dropout)
hidden_size = self.transformer.config.hidden_size
self.classifier = BiaffineClassifier(
hidden_size,
label_num=self.hparams.num_labels,
dropout=self.hparams.dropout,
arc_hidden_size=self.hparams.arc_hidden_size,
rel_hidden_size=self.hparams.rel_hidden_size,
loss_interpolation=self.hparams.loss_interpolation,
loss_func=loss_func)
def __init__(self, config: dict, do_not_download_weights=False):
super().__init__()
if do_not_download_weights:
self.lrm = AutoModel.from_config(
AutoConfig.from_pretrained(
config["model_type"], cache_dir=config["model_cache_dir"]))
else:
self.lrm = AutoModel.from_pretrained(
config["model_type"], cache_dir=config["model_cache_dir"])
output_shape = self.lrm.config.hidden_size
projection_bias = config.get("use_projection_bias", True)
self.linear = nn.Linear(
output_shape, config["emb_dim"], bias=projection_bias
) if config["use_projection"] else nn.Identity()
self.dropout = nn.Dropout(config["dropout_rate"]) if config.get(
"dropout_rate", 0.) > 1e-6 else nn.Identity()
self.config = config
self.init_weights(type(self.lrm))
def test_from_pretrained_avoids_weights_download_if_override_weights(self):
# only download config because downloading pretrained weights in addition takes too long
transformer = AutoModel.from_config(
AutoConfig.from_pretrained("epwalsh/bert-xsmall-dummy",
cache_dir=self.TEST_DIR))
# clear cache directory
for f in os.listdir(str(self.TEST_DIR)):
os.remove(str(self.TEST_DIR) + "/" + f)
assert len(os.listdir(str(self.TEST_DIR))) == 0
save_weights_path = str(self.TEST_DIR) + "/bert_weights.pth"
torch.save(transformer.state_dict(), save_weights_path)
override_transformer = cached_transformers.get(
"epwalsh/bert-xsmall-dummy",
False,
override_weights_file=save_weights_path,
cache_dir=self.TEST_DIR,
)
# check that only three files were downloaded (filename.json, filename, filename.lock), for config.json
# if more than three files were downloaded, then model weights were also (incorrectly) downloaded
# NOTE: downloaded files are not explicitly detailed in Huggingface's public API,
# so this assertion could fail in the future
json_fnames = [
fname for fname in os.listdir(str(self.TEST_DIR))
if fname.endswith(".json")
]
assert len(json_fnames) == 1
json_data = json.load(open(str(self.TEST_DIR) + "/" + json_fnames[0]))
assert (
json_data["url"] ==
"https://huggingface.co/epwalsh/bert-xsmall-dummy/resolve/main/config.json"
)
resource_id = os.path.splitext(json_fnames[0])[0]
assert set(os.listdir(str(self.TEST_DIR))) == set([
json_fnames[0], resource_id, resource_id + ".lock",
"bert_weights.pth"
])
# check that override weights were loaded correctly
for p1, p2 in zip(transformer.parameters(),
override_transformer.parameters()):
assert p1.data.ne(p2.data).sum() == 0
def __init__(self, hparams, config=None):
super().__init__()
self.save_hyperparameters(hparams)
if config is None:
self.transformer = AutoModel.from_pretrained(self.hparams.transformer)
else:
self.transformer = AutoModel.from_config(config)
self.dropout = nn.Dropout(self.hparams.dropout)
hidden_size = self.transformer.config.hidden_size
max_length = self.transformer.config.max_position_embeddings
self.classifier = RelativeTransformerLinearClassifier(
input_size=hidden_size,
hidden_size=self.hparams.hidden_size,
num_layers=self.hparams.num_layers,
num_heads=self.hparams.num_heads,
dropout=self.hparams.dropout,
max_length=max_length,
num_labels=self.hparams.num_labels
)
def __init__(self, pretrained_model: str,
requires_grad: bool = False,
dropout: float = 0.1,
layer_dropout: float = 0.1,
combine_layers: str = "mix") -> None:
config = AutoConfig.from_pretrained(pretrained_model)
config.output_hidden_states = True
model = AutoModel.from_config(config)
for param in model.parameters():
param.requires_grad = requires_grad
super().__init__(bert_model=model,
layer_dropout=layer_dropout,
combine_layers=combine_layers)
self.model = model
self.dropout = dropout
self.set_dropout(dropout)
def __init__(
self,
arch: str,
temperature: float,
criterion: str,
optcfg: DictConfig,
num_negatives: int,
num_positives: Optional[int] = None,
schcfg: Optional[DictConfig] = None,
**kwargs,
):
super().__init__()
# this line ensures params passed to LightningModule will be saved to ckpt
# it also allows to access params with 'self.hparams' attribute
self.num_negatives = num_negatives
self.num_positives = num_positives
self.schcfg = schcfg
self.optcfg = optcfg
self.save_hyperparameters()
config = AutoConfig.from_pretrained(arch)
self.transformer = AutoModel.from_config(config)
# TODO
# custom pooler? like SimCSE
# config, add_pooling_layer=True
# )
pool_size = self.transformer.config.hidden_size
self.projection = nn.Linear(pool_size, pool_size)
# loss function
self.cos_sim = torch.nn.CosineSimilarity(dim=-1)
self.temperature = temperature
if criterion == "InfoNCE":
self.criterion = nn.CrossEntropyLoss()
elif criterion == "rankloss":
self.criterion = nn.MarginRankingLoss(0.02)
else:
raise NotImplementedError
def __init__(self,
config: Dict[str, Any],
initPretrainedWeights: bool = True):
"""
Initialization of new extractive_reader with config.
:param config: Configuration used for the initialization
transformer_type: used type of model
cache: used cache dir
:type config: Dict[str, Any]
:param initPretrainedWeights: Uses pretrained weights for transformer part. If False uses random initialization.
:type initPretrainedWeights: bool
"""
super().__init__()
if initPretrainedWeights:
self.transformer = AutoModel.from_pretrained(
config["transformer_type"], cache_dir=config["cache"])
else:
self.transformer = AutoModel.from_config(
AutoConfig.from_pretrained(config["transformer_type"],
cache_dir=config["cache"]))
self.startEndProjection = torch.nn.Linear(
self.transformer.config.hidden_size, 2, bias=False)
self.selectedProjection = torch.nn.Linear(
self.transformer.config.hidden_size, 1, bias=False)
# For the joint we use the linear transformation for the start, because otherwise the dot product will be
# always maximal for the dot product with itself (one token spans).
self.jointStartProjection = torch.nn.Linear(
self.transformer.config.hidden_size,
self.transformer.config.hidden_size)
self.config = config
self.init_weights()
def huggingface_from_pretrained(source: Union[Path, str], tok_config: Dict,
trf_config: Dict):
"""Create a Huggingface transformer model from pretrained weights. Will
download the model if it is not already downloaded.
source (Union[str, Path]): The name of the model or a path to it, such as
'bert-base-cased'.
tok_config (dict): Settings to pass to the tokenizer.
trf_config (dict): Settings to pass to the transformer.
"""
if hasattr(source, "absolute"):
str_path = str(source.absolute())
else:
str_path = source
tokenizer = AutoTokenizer.from_pretrained(str_path, **tok_config)
trf_config["return_dict"] = True
config = AutoConfig.from_pretrained(str_path, **trf_config)
transformer = AutoModel.from_config(config)
ops = get_current_ops()
if isinstance(ops, CupyOps):
transformer.cuda()
return tokenizer, transformer
def test_load_full_model(self):
model1 = AutoModel.from_config(self.config())
model1.eval()
name = "dummy"
model1.add_adapter(name)
model1.set_active_adapters([name])
with tempfile.TemporaryDirectory() as temp_dir:
model1.save_pretrained(temp_dir)
model2 = AutoModel.from_pretrained(temp_dir)
model2.set_active_adapters([name])
# check if adapter was correctly loaded
self.assertTrue(name in model2.config.adapters)
# check equal output
input_ids = self.get_input_samples((1, 128), config=model1.config)
output1 = model1(input_ids)
output2 = model2(input_ids)
self.assertEqual(len(output1), len(output2))
self.assertTrue(torch.equal(output1[0], output2[0]))
def load_model(self, checkpoint):
config = self.config
opt = config['opt']
labels = load_label(opt.label_path)
label_size = len(labels)
config['labels'] = labels
self.labels = labels
if config['emb_class'] == 'glove':
if config['enc_class'] == 'gnb':
model = TextGloveGNB(config, opt.embedding_path, label_size)
if config['enc_class'] == 'cnn':
model = TextGloveCNN(config,
opt.embedding_path,
label_size,
emb_non_trainable=True)
if config['enc_class'] == 'densenet-cnn':
model = TextGloveDensenetCNN(config,
opt.embedding_path,
label_size,
emb_non_trainable=True)
if config['enc_class'] == 'densenet-dsa':
model = TextGloveDensenetDSA(config,
opt.embedding_path,
label_size,
emb_non_trainable=True)
else:
from transformers import AutoTokenizer, AutoConfig, AutoModel
bert_config = AutoConfig.from_pretrained(opt.bert_output_dir)
bert_tokenizer = AutoTokenizer.from_pretrained(opt.bert_output_dir)
bert_model = AutoModel.from_config(bert_config)
ModelClass = TextBertCNN
if config['enc_class'] == 'cls': ModelClass = TextBertCLS
model = ModelClass(config, bert_config, bert_model, bert_tokenizer,
label_size)
model.load_state_dict(checkpoint)
model = model.to(opt.device)
logger.info("[Model loaded]")
return model
def __init__(self, hparams, config=None):
super().__init__()
self.save_hyperparameters(hparams)
if config is None:
self.transformer = AutoModel.from_pretrained(
self.hparams.transformer)
else:
self.transformer = AutoModel.from_config(config)
self.dropout = nn.Dropout(self.hparams.dropout)
hidden_size = self.transformer.config.hidden_size
self.classifier = ViClassifier(
input_size=hidden_size,
label_num=self.hparams.num_labels,
dropout=self.hparams.dropout,
lstm_num_layers=self.hparams.lstm_num_layers,
lstm_hidden_size=self.hparams.lstm_hidden_size,
bin_hidden_size=self.hparams.bin_hidden_size,
arc_hidden_size=self.hparams.arc_hidden_size,
rel_hidden_size=self.hparams.rel_hidden_size,
loss_interpolation=self.hparams.loss_interpolation,
inference=self.hparams.inference,
max_iter=self.hparams.max_iter,
)
def __init__(self, hparams):
super(LMFineTuner, self).__init__()
self.hparams = hparams
print('----------------------')
pprint(self.hparams)
print('----------------------')
self.target = "age" if self.hparams.regression == True else "gender"
#self.tokenizer = BertTokenizer.from_pretrained('bert-base-uncased')
self.config = AutoConfig.from_pretrained("roberta-base")
self.tokenizer = AutoTokenizer.from_pretrained('roberta-base')
self.contextualModel = AutoModel.from_config(self.config)
#self.contextualModel = BertModel.from_pretrained('bert-base-uncased')
self.ftLayer = nn.Linear(
768, 1) if self.hparams.regression == True else nn.Linear(
768, self.hparams.num_classes)
self.activation = torch.nn.ReLU()
self.lossFunc = nn.MSELoss(
reduction='mean'
) if self.hparams.regression == True else nn.CrossEntropyLoss()
def test_add_adapter_with_invertible(self):
model = AutoModel.from_config(self.config())
model.eval()
for adapter_config in [PfeifferInvConfig(), HoulsbyInvConfig()]:
with self.subTest(model_class=model.__class__.__name__,
config=adapter_config.__class__.__name__):
name = adapter_config.__class__.__name__
model.add_adapter(name, config=adapter_config)
model.set_active_adapters([name])
# adapter is correctly added to config
self.assertTrue(name in model.config.adapters)
self.assertEqual(adapter_config,
model.config.adapters.get(name))
# invertible adapter is correctly added and returned
self.assertTrue(name in model.invertible_adapters)
self.assertEqual(model.invertible_adapters[name],
model.get_invertible_adapter())
# all invertible adapter weights should be activated for training
for param in model.invertible_adapters[name].parameters():
self.assertTrue(param.requires_grad)
# check forward pass
input_ids = self.get_input_samples((1, 128),
config=model.config)
input_data = {"input_ids": input_ids}
adapter_output = model(**input_data)
# make sure the output is different without invertible adapter
del model.invertible_adapters[name]
adapter_output_no_inv = model(**input_data)
self.assertEqual(len(adapter_output),
len(adapter_output_no_inv))
self.assertFalse(
torch.equal(adapter_output[0], adapter_output_no_inv[0]))
def init_bert(self):
attr = self.attr
pretrained_name_or_path = attr.pretrained_name_or_path
bert_config = AutoConfig.from_pretrained(pretrained_name_or_path)
if attr.input_representation == "subwords":
# tag informed modeling
if attr.n_token_type_ids and attr.n_token_type_ids > bert_config.type_vocab_size:
# load from config and then map embeddings manually from diretory `pretrained_name_or_path`
if not os.path.exists(pretrained_name_or_path):
raise Exception(
"when using tag informed modeling by inputting `n_token_type_ids`, "
"you mst specify a directory of downloaded model weights and not name"
)
print(
f"upping type_vocab_size of BERT to {attr.n_token_type_ids} from {bert_config.type_vocab_size}"
)
bert_config.type_vocab_size = attr.n_token_type_ids
bert_model = AutoModel.from_config(config=bert_config)
bert_model = load_bert_pretrained_weights(
bert_model, pretrained_name_or_path, attr.device)
else:
bert_model = AutoModel.from_pretrained(pretrained_name_or_path)
elif attr.input_representation == "charcnn":
# bert_model = CharacterBertModel.from_pretrained(pretrained_name_or_path, config=config)
raise NotImplementedError
else:
raise ValueError
if not attr.finetune_bert:
for param in bert_model.parameters():
param.requires_grad = False
bert_model.to(attr.device)
self.outdim = bert_config.hidden_size
self.config = bert_config
self.model = bert_model
self.requires_bert_optimizer = True
return
def load_model(config, checkpoint):
opt = config['opt']
labels = load_label(opt.label_path)
label_size = len(labels)
config['labels'] = labels
if config['emb_class'] == 'glove':
if config['enc_class'] == 'gnb':
model = TextGloveGNB(config, opt.embedding_path, label_size)
if config['enc_class'] == 'cnn':
model = TextGloveCNN(config,
opt.embedding_path,
label_size,
emb_non_trainable=True)
if config['enc_class'] == 'densenet-cnn':
model = TextGloveDensenetCNN(config,
opt.embedding_path,
label_size,
emb_non_trainable=True)
if config['enc_class'] == 'densenet-dsa':
model = TextGloveDensenetDSA(config,
opt.embedding_path,
label_size,
emb_non_trainable=True)
else:
from transformers import AutoTokenizer, AutoConfig, AutoModel
bert_config = AutoConfig.from_pretrained(opt.bert_output_dir)
bert_tokenizer = AutoTokenizer.from_pretrained(opt.bert_output_dir)
bert_model = AutoModel.from_config(bert_config)
ModelClass = TextBertCNN
if config['enc_class'] == 'cls': ModelClass = TextBertCLS
model = ModelClass(config, bert_config, bert_model, bert_tokenizer,
label_size)
if opt.enable_qat:
assert opt.device == 'cpu'
model.qconfig = torch.quantization.get_default_qat_qconfig('fbgemm')
'''
# fuse if applicable
# model = torch.quantization.fuse_modules(model, [['']])
'''
model = torch.quantization.prepare_qat(model)
model.eval()
model.to('cpu')
logger.info("[Convert to quantized model with device=cpu]")
model = torch.quantization.convert(model)
if opt.enable_qat_fx:
import torch.quantization.quantize_fx as quantize_fx
qconfig_dict = {
"": torch.quantization.get_default_qat_qconfig('fbgemm')
}
model = quantize_fx.prepare_qat_fx(model, qconfig_dict)
logger.info("[Convert to quantized model]")
model = quantize_fx.convert_fx(model)
model.load_state_dict(checkpoint)
model = model.to(opt.device)
'''
for name, param in model.named_parameters():
print(name, param.data, param.device, param.requires_grad)
'''
logger.info("[model] :\n{}".format(model.__str__()))
logger.info("[Model loaded]")
return model
def __init__(self) -> object:
super(BERTClass, self).__init__()
config = AutoConfig.from_pretrained('bert-base-uncased')
self.l1 = AutoModel.from_config(config)
self.l2 = torch.nn.Dropout(0.3)
self.l3 = torch.nn.Linear(768, 6)
def __init__(
self,
model: str = "bert-base-uncased",
fine_tune: bool = True,
layers: str = "-1",
layer_mean: bool = True,
subtoken_pooling: str = "first",
cls_pooling: str = "cls",
is_token_embedding: bool = True,
is_document_embedding: bool = True,
allow_long_sentences: bool = False,
use_context: Union[bool, int] = False,
respect_document_boundaries: bool = True,
context_dropout: float = 0.5,
saved_config: Optional[PretrainedConfig] = None,
tokenizer_data: Optional[BytesIO] = None,
name: Optional[str] = None,
**kwargs,
):
self.instance_parameters = self.get_instance_parameters(locals=locals())
del self.instance_parameters["saved_config"]
del self.instance_parameters["tokenizer_data"]
super().__init__()
# temporary fix to disable tokenizer parallelism warning
# (see https://stackoverflow.com/questions/62691279/how-to-disable-tokenizers-parallelism-true-false-warning)
os.environ["TOKENIZERS_PARALLELISM"] = "false"
# do not print transformer warnings as these are confusing in this case
from transformers import logging
logging.set_verbosity_error()
if tokenizer_data is None:
# load tokenizer and transformer model
self.tokenizer: PreTrainedTokenizer = AutoTokenizer.from_pretrained(model, **kwargs)
else:
# load tokenizer from inmemory zip-file
self.tokenizer = self._tokenizer_from_bytes(tokenizer_data)
if saved_config is None:
config = AutoConfig.from_pretrained(model, output_hidden_states=True, **kwargs)
self.model = AutoModel.from_pretrained(model, config=config)
else:
self.model = AutoModel.from_config(saved_config, **kwargs)
self.truncate = True
if self.tokenizer.model_max_length > LARGE_INTEGER:
allow_long_sentences = False
self.truncate = False
self.stride = self.tokenizer.model_max_length // 2 if allow_long_sentences else 0
self.allow_long_sentences = allow_long_sentences
self.use_lang_emb = hasattr(self.model, "use_lang_emb") and self.model.use_lang_emb
# model name
if name is None:
self.name = "transformer-" + str(model)
else:
self.name = name
self.base_model_name = str(model)
self.token_embedding = is_token_embedding
self.document_embedding = is_document_embedding
if not self.token_embedding and not self.document_embedding:
raise ValueError("either 'is_token_embedding' or 'is_document_embedding' needs to be set.")
if self.document_embedding and cls_pooling not in ["cls", "max", "mean"]:
raise ValueError(f"Document Pooling operation `{cls_pooling}` is not defined for TransformerEmbedding")
if self.token_embedding and subtoken_pooling not in ["first", "last", "first_last", "mean"]:
raise ValueError(f"Subtoken Pooling operation `{subtoken_pooling}` is not defined for TransformerEmbedding")
if self.document_embedding and cls_pooling == "cls" and allow_long_sentences:
log.warning(
"Using long sentences for Document embeddings is only beneficial for cls_pooling types 'mean' and 'max "
)
if isinstance(use_context, bool):
self.context_length: int = 64 if use_context else 0
else:
self.context_length = use_context
self.context_dropout = context_dropout
self.respect_document_boundaries = respect_document_boundaries
self.to(flair.device)
# embedding parameters
if layers == "all":
# send mini-token through to check how many layers the model has
hidden_states = self.model(torch.tensor([1], device=flair.device).unsqueeze(0))[-1]
self.layer_indexes = list(range(len(hidden_states)))
else:
self.layer_indexes = list(map(int, layers.split(",")))
self.cls_pooling = cls_pooling
self.subtoken_pooling = subtoken_pooling
self.layer_mean = layer_mean
self.fine_tune = fine_tune
self.static_embeddings = not self.fine_tune
# return length
self.embedding_length_internal = self._calculate_embedding_length()
self.special_tokens = []
# check if special tokens exist to circumvent error message
if self.tokenizer._bos_token:
self.special_tokens.append(self.tokenizer.bos_token)
if self.tokenizer._cls_token:
self.special_tokens.append(self.tokenizer.cls_token)
# most models have an initial BOS token, except for XLNet, T5 and GPT2
self.begin_offset = self._get_begin_offset_of_tokenizer()
self.initial_cls_token: bool = self._has_initial_cls_token()
# when initializing, embeddings are in eval mode by default
self.eval()
def load_model(config, checkpoint):
args = config['args']
labels = load_dict(args.label_path)
label_size = len(labels)
config['labels'] = labels
config['label_size'] = label_size
glabels = load_dict(args.glabel_path)
glabel_size = len(glabels)
config['glabels'] = glabels
config['glabel_size'] = glabel_size
poss = load_dict(args.pos_path)
pos_size = len(poss)
config['poss'] = poss
config['pos_size'] = pos_size
if config['emb_class'] == 'glove':
if config['enc_class'] == 'bilstm':
model = GloveLSTMCRF(config,
args.embedding_path,
label_size,
pos_size,
emb_non_trainable=True,
use_crf=args.use_crf,
use_ncrf=args.use_ncrf,
use_char_cnn=args.use_char_cnn,
use_mha=args.use_mha)
if config['enc_class'] == 'densenet':
model = GloveDensenetCRF(config,
args.embedding_path,
label_size,
pos_size,
emb_non_trainable=True,
use_crf=args.use_crf,
use_ncrf=args.use_ncrf,
use_char_cnn=args.use_char_cnn,
use_mha=args.use_mha)
elif config['emb_class'] == 'elmo':
from allennlp.modules.elmo import Elmo
elmo_model = Elmo(args.elmo_options_file,
args.elmo_weights_file,
2,
dropout=0)
model = ElmoLSTMCRF(config,
elmo_model,
args.embedding_path,
label_size,
pos_size,
emb_non_trainable=True,
use_crf=args.use_crf,
use_ncrf=args.use_ncrf,
use_char_cnn=args.use_char_cnn,
use_mha=args.use_mha)
else:
bert_config = AutoConfig.from_pretrained(args.bert_output_dir)
bert_tokenizer = AutoTokenizer.from_pretrained(args.bert_output_dir)
bert_model = AutoModel.from_config(bert_config)
ModelClass = BertLSTMCRF
model = ModelClass(config,
bert_config,
bert_model,
bert_tokenizer,
label_size,
glabel_size,
pos_size,
use_crf=args.use_crf,
use_ncrf=args.use_ncrf,
use_pos=args.bert_use_pos,
use_char_cnn=args.use_char_cnn,
use_mha=args.use_mha,
use_subword_pooling=args.bert_use_subword_pooling,
use_word_embedding=args.bert_use_word_embedding,
embedding_path=args.embedding_path,
emb_non_trainable=True,
use_doc_context=args.bert_use_doc_context,
disable_lstm=args.bert_disable_lstm,
feature_based=args.bert_use_feature_based,
use_mtl=args.bert_use_mtl)
model.load_state_dict(checkpoint)
model = model.to(args.device)
logger.info("[Loaded]")
return model
