def test_model_from_pretrained(self):
cache_dir = "/tmp/pytorch_pretrained_bert_test/"
for model_name in list(PRETRAINED_MODEL_ARCHIVE_MAP.keys())[:1]:
model = OpenAIGPTModel.from_pretrained(model_name,
cache_dir=cache_dir)
shutil.rmtree(cache_dir)
self.assertIsNotNone(model)
def construct_encoder(self):
model = OpenAIGPTModel.from_pretrained(self.model_name)
model.cuda()
model = torch.nn.DataParallel(model)
model.eval()
tokenizer = OpenAIGPTTokenizer.from_pretrained(self.model_name)
print("Model and tokenzier are constructed!")
return model, tokenizer
def sent_feat(text, feat_type):
if feat_type == 'w2v':
import gensim
import numpy as np
model = gensim.models.KeyedVectors.load_word2vec_format(
'/scratch/shared/slow/yangl/w2v/GoogleNews-vectors-negative300.bin',
binary=True)
final_feats = []
for word in (text.split(' ')):
if (word != 'a') and (word in model.vocab):
final_feats.append(model.get_vector(word))
final_feats = np.asarray(final_feats)
elif feat_type == 'openai':
import json
import torch
from pytorch_pretrained_bert import OpenAIGPTTokenizer, OpenAIGPTModel, OpenAIGPTLMHeadModel
import logging
logging.basicConfig(level=logging.INFO)
# Load pre-trained model tokenizer (vocabulary)
tokenizer = OpenAIGPTTokenizer.from_pretrained('openai-gpt')
# Tokenized input
#text = "Who was Jim Henson ? Jim Henson was a puppeteer"
model = OpenAIGPTModel.from_pretrained('openai-gpt')
model.eval()
model.to('cuda')
tokenized_text = tokenizer.tokenize(text)
# Convert token to vocabulary indices
indexed_tokens = tokenizer.convert_tokens_to_ids(tokenized_text)
# Convert inputs to PyTorch tensors
tokens_tensor = torch.tensor([indexed_tokens])
# If you have a GPU, put everything on cuda
tokens_tensor = tokens_tensor.to('cuda')
# Predict hidden states features for each layer
with torch.no_grad():
hidden_states = model(tokens_tensor)
final_feats = hidden_states[0].cpu().numpy()
else:
print('Unrecognised FEAT_TYPE.')
return final_feats
def __init__(self, num_labels=2):
#Initialize parent class
super().__init__()
# Assign the number of classes
self.num_labels = num_labels
# Create a OpenAIGPTModel with the weigths 'openai-gpt' and pass in the device information
self.openai_gpt = OpenAIGPTModel.from_pretrained('openai-gpt').to(
device)
# Create a dropout layer with the parameter defined in the configuration of the OpenAIGPTConfig class
self.dropout = nn.Dropout(config.resid_pdrop).to(device)
# Create a linear layer with parameters from the config class and the number of classes
self.classifier = nn.Linear(config.n_embd, self.num_labels).to(device)
# Initialize the weight of the linear classifier layer with xavier normal values
nn.init.xavier_normal_(self.classifier.weight).to(device)
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--batch_size',default=1,type=int,help='Batch size for inference')
parser.add_argument('--model_name',default='openai-gpt',type=str,
help='Pre-trained model name')
parser.add_argument('--max_seq_length',default=128,type=int,
help='Maximum total input sequence length after tokenization')
args = parser.parse_args()
input_ids = torch.zeros([args.batch_size,args.max_seq_length],dtype=torch.long)
model = OpenAIGPTModel.from_pretrained(args.model_name)
torch.onnx.export(model,input_ids,'openaigpt_'+'batch'+str(args.batch_size)+'.onnx')
def fetch_objects():
bert = BertModel.from_pretrained(
'bert-base-uncased').embeddings.position_embeddings.weight.data
gpt = OpenAIGPTModel.from_pretrained(
'openai-gpt').positions_embed.weight.data
gpt2 = GPT2Model.from_pretrained('gpt2').wpe.weight.data
bert_tokenizer = BertTokenizer.from_pretrained('bert-base-uncased')
gpt_tokenizer = OpenAIGPTTokenizer.from_pretrained('openai-gpt')
gpt2_tokenizer = GPT2Tokenizer.from_pretrained('gpt2')
return {
'bert': bert,
'gpt': gpt,
'gpt2': gpt2
}, {
'bert': bert_tokenizer,
'gpt': gpt_tokenizer,
'gpt2': gpt2_tokenizer
}
def __init__(self, model_name, add_dense=True, trainable=False):
super().__init__()
self.model_name = model_name
self.add_dense = add_dense
self.trainable = trainable
if self.model_name == 'GPT':
self.encoder = OpenAIGPTModel.from_pretrained('openai-gpt')
elif self.model_name == 'GPT-2':
self.encoder = GPT2Model.from_pretrained('gpt2')
else:
raise NotImplementedError(f'{self.model_name} -- No such model')
if not self.trainable:
for p in self.encoder.parameters():
p.requires_grad = False
if self.add_dense:
self.dense = nn.Linear(in_features=768, out_features=128)
def get_GPT_embeddings(vocab, dim):
_embeddings = np.zeros([len(vocab), dim])
if "openai-gpt" not in OPENAI_GPT_PRETRAINED_MODEL_ARCHIVE_MAP.keys():
raise ValueError("Provided OpenAI GPT model is not available.")
tokenizer = OpenAIGPTTokenizer.from_pretrained("openai-gpt")
gpt_model = OpenAIGPTModel.from_pretrained("openai-gpt")
with torch.no_grad():
for word in vocab:
subwords = tokenizer.tokenize(word)
indexed_tokens = tokenizer.convert_tokens_to_ids(subwords)
tokens_tensor = torch.tensor([indexed_tokens])
tokens_tensor = tokens_tensor.to(flair.device)
hidden_states = gpt_model(tokens_tensor)
first_embedding = hidden_states[0][0]
last_embedding = hidden_states[0][len(hidden_states[0]) - 1]
final_embedding = torch.cat([first_embedding, last_embedding])
_embeddings[vocab[word]] = final_embedding
return _embeddings
def _init_model_tokenizer(self):
from pytorch_pretrained_bert import OpenAIGPTTokenizer, OpenAIGPTModel
self._tokenizer = OpenAIGPTTokenizer.from_pretrained(self.model_dir)
self._model = OpenAIGPTModel.from_pretrained(self.model_dir)
self._model.eval()
parser.add_argument(
"testset", help="Testing input sentences you want to embed plus labels")
args = parser.parse_args()
#set up logging
import logging
logging.basicConfig(filename="gpt.log",
format="%(message)s",
level=logging.INFO)
# Load pre-trained model tokenizer (vocabulary)
tokenizer = OpenAIGPTTokenizer.from_pretrained('openai-gpt')
# Load pre-trained model (weights)
model = OpenAIGPTModel.from_pretrained('openai-gpt')
model.to('cuda')
model.eval()
NUM_TRAIN = 4000
TOKENS = [0, 1, 2, 3, 4]
messages = []
labels = []
probes = []
# get training and testing data
with open(args.trainset, 'r') as data:
csv_reader = csv.reader(data)
for row in csv_reader:
messages.append(row[0])
probes.append(row[1])
def __init__(self,
n_layers,
in_size,
out_size,
embed_size,
dropout=0.5,
initialEmbW=None,
rnn_type='lstm',
attention=None,
q_size=-1,
embedding_init=None,
weights_init=None,
elmo_init=False,
elmo_num_outputs=1,
finetune_elmo=False,
bert_init=False,
bert_model=None,
finetune_bert=False,
add_word_emb=True):
"""Initialize encoder with structure parameters
Args:
n_layers (int): Number of layers.
in_size (int): Dimensionality of input vectors.
out_size (int) : Dimensionality of hidden vectors to be output.
embed_size (int): Dimensionality of word embedding.
dropout (float): Dropout ratio.
"""
# TODO
conv_out_size = 512
super(LSTMEncoder, self).__init__()
self.embed = nn.Embedding(in_size, embed_size)
if embedding_init is not None:
self.embed.weight.data.copy_(torch.from_numpy(embedding_init))
elif weights_init is not None:
self.embed.weight.data.copy_(
torch.from_numpy(weights_init['embed']))
self.elmo_init = elmo_init
self.bert_init = bert_init
self.bert_model = bert_model
self.add_word_emb = add_word_emb
if elmo_init:
options_file = "https://allennlp.s3.amazonaws.com/models/elmo/2x4096_512_2048cnn_2xhighway/elmo_2x4096_512_2048cnn_2xhighway_options.json"
weight_file = "https://allennlp.s3.amazonaws.com/models/elmo/2x4096_512_2048cnn_2xhighway/elmo_2x4096_512_2048cnn_2xhighway_weights.hdf5"
self.elmo = Elmo(options_file,
weight_file,
elmo_num_outputs,
requires_grad=finetune_elmo)
elmo_layer = [
nn.Linear(elmo_num_outputs * 1024, out_size),
nn.ReLU()
]
self.elmo_layer = nn.Sequential(*elmo_layer)
elif bert_init:
if 'bert' in bert_model:
self.bert = BertModel.from_pretrained(bert_model)
elif 'openai-gpt' in bert_model:
self.bert = OpenAIGPTModel.from_pretrained(bert_model)
elif 'gpt2' in bert_model:
self.bert = GPT2Model.from_pretrained(bert_model)
elif 'transfo-xl' in bert_model:
self.bert = TransfoXLModel.from_pretrained(bert_model)
self.finetune_bert = finetune_bert
if not finetune_bert:
for param in self.bert.parameters():
param.requires_grad = False
if bert_model in ['bert-base-uncased', 'openai-gpt', 'gpt2']:
bert_in = 768
elif bert_model in [
'bert-large-uncased', 'gpt2-medium', 'transfo-xl-wt103'
]:
bert_in = 1024
bert_layer = [nn.Linear(bert_in, out_size), nn.ReLU()]
self.bert_layer = nn.Sequential(*bert_layer)
if rnn_type == 'lstm':
self.lstm = nn.LSTM(embed_size,
out_size,
n_layers,
batch_first=True,
dropout=dropout)
elif rnn_type == 'gru':
self.lstm = nn.GRU(embed_size,
out_size,
n_layers,
batch_first=True,
dropout=dropout)
self.attention = attention
if attention == 'conv' or attention == 'conv_sum':
conv_in_size = out_size
self.conv1 = nn.Conv1d(in_channels=conv_in_size,
out_channels=conv_out_size,
kernel_size=1,
padding=0)
self.conv2 = nn.Conv1d(in_channels=conv_out_size,
out_channels=2,
kernel_size=1,
padding=0)
if weights_init is not None:
self.conv1.weight.data.copy_(
torch.from_numpy(weights_init['conv1']))
self.conv2.weight.data.copy_(
torch.from_numpy(weights_init['conv2']))
elif attention == 'c_conv_sum':
hidden_size = 512
conv_hidden_size = 256
layers = [
weight_norm(nn.Linear(out_size, hidden_size), dim=None),
nn.ReLU()
]
self.c_fa = nn.Sequential(*layers)
layers = [
weight_norm(nn.Linear(q_size, hidden_size), dim=None),
nn.ReLU()
]
self.q_fa = nn.Sequential(*layers)
layers = [
nn.Conv2d(in_channels=hidden_size,
out_channels=conv_hidden_size,
kernel_size=1),
nn.ReLU(),
nn.Conv2d(in_channels=conv_hidden_size,
out_channels=1,
kernel_size=1)
]
self.cq_att = nn.Sequential(*layers)
if weights_init is not None:
self.c_fa[0].weight.data.copy_(
torch.from_numpy(weights_init['c_fa']))
self.q_fa[0].weight.data.copy_(
torch.from_numpy(weights_init['q_fa']))
self.cq_att[0].weight.data.copy_(
torch.from_numpy(weights_init['cq_att_conv1']))
self.cq_att[2].weight.data.copy_(
torch.from_numpy(weights_init['cq_att_conv2']))
def __init__(self):
super(GPTModel, self).__init__()
self.mdl = OpenAIGPTModel.from_pretrained('openai-gpt')
for param in self.mdl.parameters():
param.requires_grad = False
def __init__(self,
n_layers,
in_size,
out_size,
embed_size,
in_size_hier,
hidden_size,
proj_size,
dropout=0.5,
initialEmbW=None,
independent=False,
rnn_type='lstm',
classifier='baseline',
states_att=False,
state_size=-1,
embedding_init=None,
weights_init=None,
elmo_init=False,
elmo_num_outputs=1,
finetune_elmo=False,
bert_init=False,
bert_model=None,
finetune_bert=False,
add_word_emb=True,
pretrained_all=True):
"""Initialize encoder with structure parameters
Args:
n_layers (int): Number of layers.
in_size (int): Dimensionality of input vectors.
out_size (int): Dimensionality of output vectors.
embed_size (int): Dimensionality of word embedding.
hidden_size (int) : Dimensionality of hidden vectors.
proj_size (int) : Dimensionality of projection before softmax.
dropout (float): Dropout ratio.
"""
#TODO
att_size = 128
self.rnn_type = rnn_type
self.classifier = classifier
super(HLSTMDecoder, self).__init__()
self.embed = nn.Embedding(in_size, embed_size)
if embedding_init is not None:
self.embed.weight.data.copy_(torch.from_numpy(embedding_init))
elif weights_init is not None:
self.embed.weight.data.copy_(
torch.from_numpy(weights_init['embed']))
if rnn_type == 'lstm':
self.lstm = nn.LSTM(embed_size + in_size_hier,
hidden_size,
n_layers,
batch_first=True,
dropout=dropout)
elif rnn_type == 'gru':
self.lstm = nn.GRU(embed_size + in_size_hier,
hidden_size,
n_layers,
batch_first=True,
dropout=dropout)
if weights_init is not None:
lstm_wt = weights_init['lstm']
for k, v in lstm_wt.items():
self.lstm.__getattr__(k).data.copy_(torch.from_numpy(v))
self.elmo_init = elmo_init
self.bert_init = bert_init
self.pretrained_all = pretrained_all
self.bert_model = bert_model
self.add_word_emb = add_word_emb
if False:
#if pretrained_all and elmo_init:
options_file = "https://allennlp.s3.amazonaws.com/models/elmo/2x4096_512_2048cnn_2xhighway/elmo_2x4096_512_2048cnn_2xhighway_options.json"
weight_file = "https://allennlp.s3.amazonaws.com/models/elmo/2x4096_512_2048cnn_2xhighway/elmo_2x4096_512_2048cnn_2xhighway_weights.hdf5"
self.elmo = Elmo(options_file,
weight_file,
elmo_num_outputs,
requires_grad=finetune_elmo)
elmo_layer = [
nn.Linear(elmo_num_outputs * 1024, out_size),
nn.ReLU()
]
self.elmo_layer = nn.Sequential(*elmo_layer)
elif False:
#elif pretrained_all and bert_init:
if 'bert' in bert_model:
self.bert = BertModel.from_pretrained(bert_model)
elif 'openai-gpt' in bert_model:
self.bert = OpenAIGPTModel.from_pretrained(bert_model)
elif 'gpt2' in bert_model:
self.bert = GPT2Model.from_pretrained(bert_model)
elif 'transfo-xl' in bert_model:
self.bert = TransfoXLModel.from_pretrained(bert_model)
self.finetune_bert = finetune_bert
if not finetune_bert:
for param in self.bert.parameters():
param.requires_grad = False
if bert_model in ['bert-base-uncased', 'openai-gpt', 'gpt2']:
bert_in = 768
elif bert_model in [
'bert-large-uncased', 'gpt2-medium', 'transfo-xl-wt103'
]:
bert_in = 1024
bert_layer = [nn.Linear(bert_in, out_size), nn.ReLU()]
self.bert_layer = nn.Sequential(*bert_layer)
self.n_layers = n_layers
self.dropout = dropout
self.independent = independent
self.states_att = states_att
if states_att:
self.ecW = nn.Linear(state_size, att_size)
self.ysW = nn.Linear(hidden_size, att_size)
hidden_size += state_size
if classifier == 'baseline':
layers = [
nn.Linear(hidden_size, proj_size),
nn.Linear(proj_size, out_size)
]
self.y_classifier = nn.Sequential(*layers)
elif classifier == 'weighted_norm':
layers = [
weight_norm(nn.Linear(hidden_size, proj_size), dim=None),
nn.ReLU(),
weight_norm(nn.Linear(proj_size, out_size), dim=None)
]
self.y_classifier = nn.Sequential(*layers)
elif classifier == 'logit':
layers = [
weight_norm(nn.Linear(hidden_size, proj_size), dim=None),
nn.ReLU(),
nn.Linear(proj_size, out_size)
]
self.classifier_txt = nn.Sequential(*layers)
layers = [
weight_norm(nn.Linear(hidden_size, 2048), dim=None),
nn.ReLU(),
nn.Linear(2048, out_size)
]
self.classifier_ft = nn.Sequential(*layers)
if weights_init is not None:
self.classifier_txt[0].weight.data.copy_(
torch.from_numpy(weights_init['classifier_txt']))
self.classifier_ft[0].weight.data.copy_(
torch.from_numpy(weights_init['classifier_ft']))
def __init__(self,
n_wlayers,
n_slayers,
in_size,
out_size,
embed_size,
hidden_size,
dropout=0.5,
ignore_label=None,
initialEmbW=None,
independent=False,
rnn_type='lstm',
embedding_init=None,
weights_init=None,
elmo_init=False,
elmo_num_outputs=1,
finetune_elmo=False,
bert_init=False,
bert_model=None,
finetune_bert=False,
add_word_emb=True,
pretrained_all=True,
concat_his=False):
"""Initialize encoder with structure parameters
Args:
n_layers (int): Number of layers.
in_size (int): Dimensionality of input vectors.
out_size (int) : Dimensionality of hidden vectors to be output.
embed_size (int): Dimensionality of word embedding.
dropout (float): Dropout ratio.
"""
super(HLSTMEncoder, self).__init__()
self.embed = nn.Embedding(in_size, embed_size)
if embedding_init is not None:
self.embed.weight.data.copy_(torch.from_numpy(embedding_init))
elif weights_init is not None:
self.embed.weight.data.copy_(
torch.from_numpy(weights_init['embed']))
if rnn_type == 'lstm':
self.wlstm = nn.LSTM(embed_size,
hidden_size,
n_wlayers,
batch_first=True,
dropout=dropout)
self.slstm = nn.LSTM(hidden_size,
out_size,
n_slayers,
batch_first=True,
dropout=dropout)
elif rnn_type == 'gru':
self.wlstm = nn.GRU(embed_size,
hidden_size,
n_wlayers,
batch_first=True,
dropout=dropout)
self.slstm = nn.GRU(hidden_size,
out_size,
n_slayers,
batch_first=True,
dropout=dropout)
self.elmo_init = elmo_init
self.bert_init = bert_init
self.pretrained_all = pretrained_all
self.concat_his = concat_his
self.bert_model = bert_model
self.add_word_emb = add_word_emb
if pretrained_all and elmo_init:
options_file = "https://allennlp.s3.amazonaws.com/models/elmo/2x4096_512_2048cnn_2xhighway/elmo_2x4096_512_2048cnn_2xhighway_options.json"
weight_file = "https://allennlp.s3.amazonaws.com/models/elmo/2x4096_512_2048cnn_2xhighway/elmo_2x4096_512_2048cnn_2xhighway_weights.hdf5"
self.elmo = Elmo(options_file,
weight_file,
elmo_num_outputs,
requires_grad=finetune_elmo)
elmo_layer = [
nn.Linear(elmo_num_outputs * 1024, out_size),
nn.ReLU()
]
self.elmo_layer = nn.Sequential(*elmo_layer)
elif pretrained_all and bert_init:
if 'bert' in bert_model:
self.bert = BertModel.from_pretrained(bert_model)
elif 'openai-gpt' in bert_model:
self.bert = OpenAIGPTModel.from_pretrained(bert_model)
elif 'gpt2' in bert_model:
self.bert = GPT2Model.from_pretrained(bert_model)
elif 'transfo-xl' in bert_model:
self.bert = TransfoXLModel.from_pretrained(bert_model)
self.finetune_bert = finetune_bert
if not finetune_bert:
for param in self.bert.parameters():
param.requires_grad = False
if bert_model in ['bert-base-uncased', 'openai-gpt', 'gpt2']:
bert_in = 768
elif bert_model in [
'bert-large-uncased', 'gpt2-medium', 'transfo-xl-wt103'
]:
bert_in = 1024
bert_layer = [nn.Linear(bert_in, out_size), nn.ReLU()]
self.bert_layer = nn.Sequential(*bert_layer)
self.independent = independent
self.rnn_type = rnn_type