def main(args):
preprocessor = Preprocessor(args.model_type, args.max_len)
train_dataloader, val_dataloader, test_dataloader = get_dataloader(
args, preprocessor)
bert_finetuner = BertModel(args, train_dataloader, val_dataloader,
test_dataloader)
logger = TensorBoardLogger(save_dir=args.log_dir,
version=1,
name="nsmc-bert")
early_stop_callback = EarlyStopping(monitor='val_acc',
min_delta=0.00,
patience=5,
verbose=False,
mode='max')
checkpoint_callback = ModelCheckpoint(filepath=args.checkpoint_path,
verbose=True,
monitor='val_acc',
mode='max',
save_top_k=3,
prefix='')
trainer = pl.Trainer(
gpus=1,
# distributed_backend='ddp'
checkpoint_callback=checkpoint_callback,
early_stop_callback=early_stop_callback,
logger=logger)
trainer.fit(bert_finetuner)
trainer.test()
def get_model(tokenizer, args):
"""Build the model."""
print('building BERT model ...')
model = BertModel(tokenizer, args)
print(' > number of parameters: {}'.format(
sum([p.nelement() for p in model.parameters()])),
flush=True)
# GPU allocation.
model.cuda(torch.cuda.current_device())
# Fp16 conversion.
if args.fp16:
print("fp16 mode")
model = FP16_Module(model)
if args.fp32_embedding:
model.module.model.bert.embeddings.word_embeddings.float()
model.module.model.bert.embeddings.position_embeddings.float()
model.module.model.bert.embeddings.token_type_embeddings.float()
if args.fp32_tokentypes:
model.module.model.bert.embeddings.token_type_embeddings.float()
if args.fp32_layernorm:
for name, _module in model.named_modules():
if 'LayerNorm' in name:
_module.float()
# Wrap model for distributed training.
if args.world_size > 1:
model = DDP(model)
return model
def main():
parser = ArgumentParser()
parser.add_argument("--model-config",
type=str,
default="openai-gpt",
help="Path, url or short name of the model")
parser.add_argument("--device",
type=str,
default="cuda" if torch.cuda.is_available() else "cpu",
help="Device (cuda or cpu)")
parser.add_argument("--outlens", type=int, default=30)
parser.add_argument("--beam", type=int, default=1)
parser.add_argument("--checkpoints", type=str)
parser.add_argument("--data", type=str, default="file")
args = parser.parse_args()
args.load_model = True
model = BertModel(None, args)
state_dict = convert_model(torch.load(args.checkpoints)['sd'])
model.load_state_dict(state_dict)
model.to(args.device)
tokenizer = BertWordPieceTokenizer("bert-base-chinese",
cache_dir="temp_cache_dir")
generate(model,
tokenizer,
args.device,
args.data,
sample=True,
top_k=5,
beam_size=6,
outlens=30)
def get_model(args):
"""Build the model."""
print_rank_0('building BERT model ...')
model = BertModel(args)
if mpu.get_data_parallel_rank() == 0:
print(' > number of parameters on model parallel rank {}: {}'.format(
mpu.get_model_parallel_rank(),
sum([p.nelement() for p in model.parameters()])),
flush=True)
# GPU allocation.
model.cuda(torch.cuda.current_device())
# Fp16 conversion.
if args.fp16:
model = FP16_Module(model)
if args.fp32_embedding:
model.module.model.bert.embeddings.word_embeddings.float()
model.module.model.bert.embeddings.position_embeddings.float()
model.module.model.bert.embeddings.token_type_embeddings.float()
if args.fp32_tokentypes:
model.module.model.bert.embeddings.token_type_embeddings.float()
if args.fp32_layernorm:
for name, _module in model.named_modules():
if 'LayerNorm' in name:
_module.float()
# Wrap model for distributed training.
if USE_TORCH_DDP:
i = torch.cuda.current_device()
model = DDP(model,
device_ids=[i],
output_device=i,
process_group=mpu.get_data_parallel_group())
else:
model = DDP(model)
return model
def get_model(args):
"""Build the model."""
print_rank_0('building BERT model ...')
model = BertModel(args)
if mpu.get_data_parallel_rank() == 0:
print(' > number of parameters on model parallel rank {}: {}'.format(
mpu.get_model_parallel_rank(),
sum([p.nelement() for p in model.parameters()])), flush=True)
# GPU allocation.
model.cuda(torch.cuda.current_device())
# Fp16 conversion.
if args.fp16:
model = FP16_Module(model)
if args.fp32_embedding:
model.module.model.bert.embeddings.word_embeddings.float()
if args.ds_type=='BERT':
model.module.model.bert.embeddings.position_embeddings.float()
else:
model.module.model.bert.embeddings.token_position_embeddings.float()
model.module.model.bert.embeddings.para_position_embeddings.float()
model.module.model.bert.embeddings.sent_position_embeddings.float()
model.module.model.bert.embeddings.token_type_embeddings.float()
if args.fp32_tokentypes:
model.module.model.bert.embeddings.token_type_embeddings.float()
if args.fp32_layernorm:
for name, _module in model.named_modules():
if 'LayerNorm' in name:
_module.float()
# Wrap model for distributed training.
if args.DDP_impl == 'torch':
i = torch.cuda.current_device()
args.DDP_type = torch.nn.parallel.distributed.DistributedDataParallel
model = args.DDP_type(model, device_ids=[i], output_device=i,
process_group=mpu.get_data_parallel_group())
elif args.DDP_impl == 'local':
args.DDP_type = LocalDDP
model = args.DDP_type(model)
else:
print_rank_0('Unknown DDP implementation specified: {}. '
'Exiting.'.format(args.DDP_impl))
exit()
return model
def model_init(app):
ArgsSet = type('ArgsSet',(object,),{})
client = ArgsSet()
parser = ArgumentParser()
parser.add_argument("--model-config", type=str, default="openai-gpt",
help="Path, url or short name of the model")
parser.add_argument("--device", type=str, default="cuda" if torch.cuda.is_available()
else "cpu", help="Device (cuda or cpu)")
parser.add_argument("--outlens", type=int, default=30)
parser.add_argument("--beam", type=int, default=1)
parser.add_argument("--gpt-checkpoints", type=str)
parser.add_argument("--port", type=int, default=8866)
args = parser.parse_args()
args.load_model = True
args.fp32_embedding = False
args.fp32_layernorm = False
args.fp32_tokentypes = False
args.layernorm_epsilon = 1e-12
gpt = BertModel(None, args)
state_dict = convert_model(torch.load(args.gpt_checkpoints)['sd'])
gpt.load_state_dict(state_dict)
gpt.to(args.device)
gpt.eval()
tokenizer = BertWordPieceTokenizer("bert-base-chinese", cache_dir="temp_cache_dir")
print(" Load model from {}".format(args.gpt_checkpoints))
client.tokenizer = tokenizer
client.gpt =gpt
client.gpt_beam = SequenceGenerator(gpt, tokenizer, beam_size=args.beam, max_lens=args.outlens)
client.device = args.device
client.port = args.port
client.generator = sample_sequence
return client
def main(train_file,
dev_file,
target_dir,
epochs=10,
batch_size=32,
lr=2e-05,
patience=3,
max_grad_norm=10.0,
checkpoint=None):
bert_tokenizer = BertTokenizer.from_pretrained('bert-base-chinese',
do_lower_case=True)
device = torch.device("cuda")
print(20 * "=", " Preparing for training ", 20 * "=")
# 保存模型的路径
if not os.path.exists(target_dir):
os.makedirs(target_dir)
# -------------------- Data loading ------------------- #
print("\t* Loading training data...")
train_data = DataPrecessForSentence(bert_tokenizer, train_file)
train_loader = DataLoader(train_data, shuffle=True, batch_size=batch_size)
print("\t* Loading validation data...")
dev_data = DataPrecessForSentence(bert_tokenizer, dev_file)
dev_loader = DataLoader(dev_data, shuffle=True, batch_size=batch_size)
# -------------------- Model definition ------------------- #
print("\t* Building model...")
model = BertModel().to(device)
# -------------------- Preparation for training ------------------- #
# 待优化的参数
param_optimizer = list(model.named_parameters())
no_decay = ['bias', 'LayerNorm.bias', 'LayerNorm.weight']
optimizer_grouped_parameters = [{
'params':
[p for n, p in param_optimizer if not any(nd in n for nd in no_decay)],
'weight_decay':
0.01
}, {
'params':
[p for n, p in param_optimizer if any(nd in n for nd in no_decay)],
'weight_decay':
0.0
}]
optimizer = AdamW(optimizer_grouped_parameters, lr=lr)
#optimizer = torch.optim.Adam(optimizer_grouped_parameters, lr=lr)
scheduler = torch.optim.lr_scheduler.ReduceLROnPlateau(optimizer,
mode="max",
factor=0.85,
patience=0)
best_score = 0.0
start_epoch = 1
# Data for loss curves plot
epochs_count = []
train_losses = []
valid_losses = []
# Continuing training from a checkpoint if one was given as argument
if checkpoint:
checkpoint = torch.load(checkpoint)
start_epoch = checkpoint["epoch"] + 1
best_score = checkpoint["best_score"]
print("\t* Training will continue on existing model from epoch {}...".
format(start_epoch))
model.load_state_dict(checkpoint["model"])
optimizer.load_state_dict(checkpoint["optimizer"])
epochs_count = checkpoint["epochs_count"]
train_losses = checkpoint["train_losses"]
valid_losses = checkpoint["valid_losses"]
# Compute loss and accuracy before starting (or resuming) training.
_, valid_loss, valid_accuracy, auc = validate(model, dev_loader)
print(
"\t* Validation loss before training: {:.4f}, accuracy: {:.4f}%, auc: {:.4f}"
.format(valid_loss, (valid_accuracy * 100), auc))
# -------------------- Training epochs ------------------- #
print("\n", 20 * "=", "Training Bert model on device: {}".format(device),
20 * "=")
patience_counter = 0
for epoch in range(start_epoch, epochs + 1):
epochs_count.append(epoch)
print("* Training epoch {}:".format(epoch))
epoch_time, epoch_loss, epoch_accuracy = train(model, train_loader,
optimizer, epoch,
max_grad_norm)
train_losses.append(epoch_loss)
print("-> Training time: {:.4f}s, loss = {:.4f}, accuracy: {:.4f}%".
format(epoch_time, epoch_loss, (epoch_accuracy * 100)))
print("* Validation for epoch {}:".format(epoch))
epoch_time, epoch_loss, epoch_accuracy, epoch_auc = validate(
model, dev_loader)
valid_losses.append(epoch_loss)
print(
"-> Valid. time: {:.4f}s, loss: {:.4f}, accuracy: {:.4f}%, auc: {:.4f}\n"
.format(epoch_time, epoch_loss, (epoch_accuracy * 100), epoch_auc))
# Update the optimizer's learning rate with the scheduler.
scheduler.step(epoch_accuracy)
# Early stopping on validation accuracy.
if epoch_accuracy < best_score:
patience_counter += 1
else:
best_score = epoch_accuracy
patience_counter = 0
torch.save(
{
"epoch": epoch,
"model": model.state_dict(),
"best_score": best_score,
"epochs_count": epochs_count,
"train_losses": train_losses,
"valid_losses": valid_losses
}, os.path.join(target_dir, "best.pth.tar"))
if patience_counter >= patience:
print("-> Early stopping: patience limit reached, stopping...")
break
def train(args):
if "bert" in args.model_type:
set_gelu("tanh") # 切换gelu版本
# Step1: Load Data
data_generator = None
if "siamese" in args.model_type:
data_generator = SiameseDataGenerator
elif "albert" in args.model_type:
data_generator = BertDataGenerator
train_ds = data_generator(data_path=args.train_data_path,
batch_size=args.batch_size,
dict_path=args.bert_dict_path,
maxlen=args.query_len)
dev_ds = data_generator(data_path=args.dev_data_path,
batch_size=args.batch_size,
maxlen=args.query_len,
dict_path=args.bert_dict_path)
test_ds = data_generator(data_path=args.test_data_path,
batch_size=args.batch_size,
maxlen=args.query_len,
dict_path=args.bert_dict_path)
# Step2: Load Model
model = None
if "siamese" in args.model_type:
model = SiameseBertModel(config_path=args.bert_config_path,
checkpoint_path=args.bert_checkpoint_path,
dense_units=args.dense_units)
elif "albert" in args.model_type:
model = BertModel(config_path=args.bert_config_path,
checkpoint_path=args.bert_checkpoint_path)
model_name = model.__class__.__name__
model = model.get_model()
from bert4keras.optimizers import Adam
model.compile(
loss='sparse_categorical_crossentropy',
optimizer=Adam(2e-5), # 用足够小的学习率
# optimizer=PiecewiseLinearLearningRate(Adam(5e-5), {10000: 1, 30000: 0.1}),
metrics=['accuracy'],
)
evaluator = Evaluator(dev_ds=dev_ds,
model_name=model_name,
is_bert_model=True,
test_ds=test_ds)
logger.info("***** Running training *****")
logger.info(" Model Class Name = %s", model_name)
logger.info(" Num Epochs = %d", args.epoch)
model.fit_generator(train_ds.forfit(),
steps_per_epoch=len(train_ds),
epochs=args.epoch,
callbacks=[evaluator],
verbose=2)
model.load_weights('./checkpoints/best_{}.weight'.format(model_name))
logger.info("***** Test Reslt *****")
logger.info(" Model = %s", model_name)
logger.info(" Batch Size = %d", args.batch_size)
logger.info(" Final Test Acc:%05f",
cal_acc(data=test_ds, model=model, is_bert_model=True))
elif "NN" in args.model_type:
# Step 1 : Loda Data
train_data = pd.read_csv(args.train_data_path)
dev_data = pd.read_csv(args.dev_data_path)
test_data = pd.read_csv(args.test_data_path)
category_count = len(train_data["category"].value_counts())
category_encoder = category_OneHotEncoder(data_df=train_data)
loader = LoadData(w2v_path=args.w2v_path, query_len=args.query_len)
word2idx = loader.word2idx
emd_matrix = loader.emb_matrix
"""
注意：
shuffle的顺序很重要:一般建议是先执行shuffle方法，接着采用batch方法。
这样是为了保证在整体数据打乱之后再取出batch_size大小的数据。
如果先采取batch方法再采用shuffle方法，那么此时就只是对batch进行shuffle，
而batch里面的数据顺序依旧是有序的，那么随机程度会减弱。
"""
train_ds = loader.dataset(encoder=category_encoder, data_df=train_data)
train_ds = train_ds.shuffle(buffer_size=len(train_data)).batch(
batch_size=args.batch_size).repeat()
dev_ds = loader.dataset(encoder=category_encoder, data_df=dev_data)
dev_ds = dev_ds.batch(batch_size=args.batch_size)
test_ds = loader.dataset(encoder=category_encoder, data_df=test_data)
test_ds = test_ds.batch(batch_size=args.batch_size)
# Step2: Load Model
model = None
if "siamese_CNN" in args.model_type:
model = SiameseCnnModel(emb_matrix=emd_matrix,
word2idx=word2idx,
filters_nums=args.filters_nums,
kernel_sizes=args.kernel_sizes,
dense_units=args.dense_units,
label_count=args.label_count,
category_count=category_count,
query_len=args.query_len,
shared=args.feature_shared,
add_feature=args.add_features)
elif "siamese_RNN" in args.model_type:
model = SiameseRnnModel(emb_matrix=emd_matrix,
word2idx=word2idx,
hidden_units=args.hidden_units,
dense_units=args.dense_units,
label_count=args.label_count,
category_count=category_count,
query_len=args.query_len,
mask_zero=args.mask_zero,
bidirection=args.bi_direction,
shared=args.feature_shared,
add_feature=args.add_features)
model_name = model.__class__.__name__
model = model.get_model()
logger.info("***** Running training *****")
logger.info(" Model Class Name = %s", model_name)
logger.info(" Num examples = %d", len(train_data))
logger.info(" Num Epochs = %d", args.epoch)
model.compile(optimizer='adam',
loss="binary_crossentropy",
metrics=["acc"])
early_stopping = EarlyStopping(monitor="val_acc",
patience=3,
mode="max")
evaluator = Evaluator(dev_ds=dev_ds,
model_name=model_name,
is_bert_model=False,
dev_label=dev_data['label'])
# Step3: Train Model
history = model.fit(train_ds,
callbacks=[early_stopping, evaluator],
epochs=args.epoch,
steps_per_epoch=len(train_data) // args.batch_size,
validation_data=dev_ds,
validation_steps=len(dev_data) // args.batch_size)
# Step4 : Save model and trainLogs
logger.info("***** Training Logs *****")
for epoch in history.epoch:
logger.info("Epoch %d", epoch)
logger.info("train_loss:%f train_acc:%f val_loss:%f val_acc:%f",
history.history.get("loss")[epoch],
history.history.get("acc")[epoch],
history.history.get("val_loss")[epoch],
history.history.get("val_acc")[epoch])
#
# time_stamp = datetime.datetime.now().strftime('%m-%d_%H-%M-%S')
# path = './checkpoints/{}_{}.h5'.format(model_name, time_stamp)
# model.save(path)
model = load_model('./checkpoints/best_{}.h5'.format(model_name))
y_pred = model.predict(test_ds)
y_true = test_data["label"].values.reshape((-1, 1))
y_pred[y_pred > 0.5] = 1
y_pred[y_pred < 0.5] = 0
acc = accuracy_score(y_true, y_pred)
precision = precision_score(y_true, y_pred)
recall = recall_score(y_true, y_pred)
f1 = f1_score(y_true, y_pred)
logger.info("***** Pramaters *****")
logger.info(" ModelName = %s", args.model_type)
logger.info(" Add Features = %s", args.add_features)
logger.info(" Embedding dims = %d", len(emd_matrix[0]))
logger.info(" BatchSize = %d", args.batch_size)
if "CNN" in args.model_type:
logger.info(" kernel_sizes = %s", args.kernel_sizes)
logger.info(" filters_nums = %s", args.filters_nums)
elif "RNN" in args.model_type:
logger.info(" hidden_units = %s", args.hidden_units)
logger.info(" bi_direction = %s", args.bi_direction)
logger.info(" dense_units = %s", args.dense_units)
logger.info(" feature_shared = %s", args.feature_shared)
logger.info("***** Testing Results *****")
logger.info(" Acc = %f", acc)
logger.info(" Precision = %f", precision)
logger.info(" Recall = %f", recall)
logger.info(" F1-score = %f", f1)
# We use only ~1% data to fine-tune the model.
train, dev = SQuAD1()
raw_train = list(train)[:1024]
raw_dev = list(dev)[:128]
convert_to_arrow(raw_train, "train_arrow")
convert_to_arrow(raw_dev, "dev_arrow")
base_url = 'https://pytorch.s3.amazonaws.com/models/text/torchtext_bert_example/'
vocab_path = download_from_url(base_url + 'bert_vocab.txt')
data_module = QuestionAnswerDataModule(train_arrow_path='train_arrow',
dev_arrow_path='dev_arrow',
vocab_filepath=vocab_path,
batch_size=BATCH_SIZE)
# Load pretrained model and generate task
# default parameters from the pretrained model
vocab_size, emsize, nhead, nhid, nlayers, dropout = 99230, 768, 12, 3072, 12, 0.2
pretrained_bert = BertModel(vocab_size, emsize, nhead, nhid, nlayers,
dropout)
pretrained_model_path = download_from_url(base_url + 'ns_bert.pt')
pretrained_bert.load_state_dict(
torch.load(pretrained_model_path, map_location='cpu'))
qa_model = QuestionAnswerModel(pretrained_bert)
task = QuestionAnswerTask(qa_model, LR)
trainer = Trainer(gpus=0,
max_epochs=EPOCH,
progress_bar_refresh_rate=40,
fast_dev_run=True)
trainer.fit(task, data_module)
from model import mlm_loss, nsp_accuracy, mlm_accuracy
config = BertConfig(vocab_size=300,
hidden_size=128,
num_hidden_layers=1,
num_attention_heads=1,
intermediate_size=512,
hidden_act="gelu",
hidden_dropout_prob=0.1,
attention_probs_dropout_prob=0.1,
max_position_embeddings=512,
type_vocab_size=2,
initializer_range=0.02)
bert_model = BertModel(config, with_nsp=True, with_mlm=True, is_pretrain=True)
# if with_mlm=True, inputs will be (input_ids, input_mask, token_type_ids, masked_lm_positions)
input_ids = tf.keras.Input(shape=(512,), dtype=tf.int32)
input_mask = tf.keras.Input(shape=(512,), dtype=tf.int32)
token_type_ids = tf.keras.Input(shape=(512,), dtype=tf.int32)
# masked_lm_positions = [batch_size, MAX_PREDICTIONS_PER_SEQ]
masked_lm_positions = tf.keras.Input(shape=(2,), dtype=tf.int32)
inputs = (input_ids, input_mask, token_type_ids, masked_lm_positions)
bert_model(inputs)
# bert_model = tf.keras.Model(inputs, outputs)
def model_init(app):
ArgsSet = type('ArgsSet', (object, ), {})
client = ArgsSet()
parser = ArgumentParser()
parser.add_argument("--model-config",
type=str,
default="openai-gpt",
help="Path, url or short name of the model")
parser.add_argument("--device",
type=str,
default="cuda" if torch.cuda.is_available() else "cpu",
help="Device (cuda or cpu)")
parser.add_argument("--outlens", type=int, default=30)
parser.add_argument("--beam", type=int, default=1)
parser.add_argument("--fuse-checkpoints", type=str)
parser.add_argument("--gpt-checkpoints", type=str)
parser.add_argument("--qa-style-checkpoints", type=str)
parser.add_argument("--multi-task", type=str)
parser.add_argument("--split-sentence-with-task-embedding-checkpoints",
type=str)
parser.add_argument("--special-cls-checkpoints", type=str)
parser.add_argument("--port", type=int, default=8866)
args = parser.parse_args()
args.load_model = True
args.fp32_embedding = False
args.fp32_layernorm = False
args.fp32_tokentypes = False
args.layernorm_epsilon = 1e-12
fuse_model = BertModel(None, args)
state_dict = convert_model(torch.load(args.fuse_checkpoints)['sd'])
fuse_model.load_state_dict(state_dict)
fuse_model.to(args.device)
fuse_model.eval()
print("| Load model from {}".format(args.fuse_checkpoints))
gpt = BertModel(None, args)
state_dict = convert_model(torch.load(args.gpt_checkpoints)['sd'])
gpt.load_state_dict(state_dict)
gpt.to(args.device)
gpt.eval()
tokenizer = BertWordPieceTokenizer("bert-base-chinese",
cache_dir="temp_cache_dir")
print(" Load model from {}".format(args.gpt_checkpoints))
# Load bert checkpoints
args.load_model = False
args.fp32_embedding = False
args.fp32_layernorm = False
args.fp32_tokentypes = False
args.layernorm_epsilon = 1e-12
bert = BertModel(None, args)
bert.to(args.device)
bert.eval()
client.tokenizer = tokenizer
client.fuse_model = fuse_model
client.fuse_beam = SequenceGenerator(fuse_model,
tokenizer,
beam_size=args.beam,
max_lens=args.outlens)
client.gpt = gpt
client.gpt_beam = SequenceGenerator(gpt,
tokenizer,
beam_size=args.beam,
max_lens=args.outlens)
client.bert = bert
client.device = args.device
client.port = args.port
client.generator = sample_sequence
# multi task model
multi_task = BertModel(None, args)
state_dict = convert_model(torch.load(args.multi_task)['sd'])
print("| Load model from {}".format(args.multi_task))
multi_task.load_state_dict(state_dict)
multi_task.to(args.device)
multi_task.eval()
client.multi_task_model = multi_task
client.multi_task_beam = SequenceGenerator(multi_task,
tokenizer,
beam_size=args.beam,
max_lens=args.outlens)
# qa style model
qa_style = BertModel(None, args)
state_dict = convert_model(torch.load(args.qa_style_checkpoints)['sd'])
qa_style.load_state_dict(state_dict)
qa_style.to(args.device)
qa_style.eval()
print(" Load model from {}".format(args.qa_style_checkpoints))
client.qa_task_model = qa_style
# special cls tokens
special_cls_model = BertModel(None, args)
special_cls_model.eval()
state_dict = convert_model(torch.load(args.special_cls_checkpoints)['sd'])
special_cls_model.load_state_dict(state_dict)
special_cls_model.to(args.device)
special_cls_model.eval()
print(" Load model from {}".format(args.special_cls_checkpoints))
client.special_cls_model = special_cls_model
client.special_beam = SequenceGenerator(special_cls_model,
tokenizer,
beam_size=args.beam,
max_lens=args.outlens)
# split sentence model with task embedding
split_sentence_model = BertModel(None, args)
split_sentence_model.eval()
state_dict = convert_model(
torch.load(args.split_sentence_with_task_embedding_checkpoints)['sd'])
split_sentence_model.load_state_dict(state_dict)
split_sentence_model.to(args.device)
split_sentence_model.eval()
print(" Load model from {}".format(
args.split_sentence_with_task_embedding_checkpoints))
client.split_sentence_model = split_sentence_model
client.split_sentence_beam = SequenceGenerator(split_sentence_model,
tokenizer,
beam_size=args.beam,
max_lens=args.outlens)
return client
@contact: [email protected] """ import re import torch import sentencepiece as spm from model import BertModel sp = spm.SentencePieceProcessor() sp.load('resource/sentencepiece.unigram.35000.model') vocab_size = sp.get_piece_size() n_embedding = 512 n_layer = 8 model = BertModel(vocab_size, n_embedding, n_layer) model.eval() model.load_state_dict(torch.load('resource/model.{}.{}.th'.format(n_embedding, n_layer), map_location='cpu')) # you should enable cuda if it is available # model.cuda() # if you are using a GPU that has tensor cores (nvidia volta, Turing architecture), you can enable half precision # inference and training, we recommend to use the nvidia official apex to make everything as clean as possible from # apex import amp [model] = amp.initialize([model], opt_level="O2") device = model.embedding.weight.data.device def clean_text(txt): txt = txt.lower()
result[0], result[1], result[2], result[3], result[4], result[5]
summary_writer.add_summary(summary, global_step)
_info('loss : {}\t lr : {}'.format(loss_bs, learning_rate), head='Step: {}'.format(global_step))
if global_step % 100 == 0:
train_model.saver.save(
train_sess,
os.path.join(PROJECT_PATH, config.ckpt_path),
global_step=global_step)
def infer(config):
# build graph
infer_graph = tf.Graph()
with infer_graph.as_default():
infer_model = BertModel(config=config, is_training=False)
# create session
sess_conf = tf.ConfigProto(intra_op_parallelism_threads=8, inter_op_parallelism_threads=8)
sess_conf.gpu_options.allow_growth = True
infer_sess = tf.Session(config=sess_conf, graph=infer_graph)
# restore model from the latest checkpoint
with infer_graph.as_default():
loaded_model, global_step = _mh.create_or_load(
infer_model, os.path.join(PROJECT_PATH, config.ckpt_path), infer_sess)
# the following is just for test
"""
import numpy as np
input_ids = np.array([[10, 128, 10, 0, 120], [20, 3, 0, 0, 30]], dtype=np.int32)
def main(seed):
# tasks = ['Ames', 'BBB', 'FDAMDD', 'H_HT', 'Pgp_inh', 'Pgp_sub']
# os.environ['CUDA_VISIBLE_DEVICES'] = "1"
# tasks = ['BBB', 'FDAMDD', 'Pgp_sub']
task = 'FDAMDD'
print(task)
small = {'name':'Small','num_layers': 3, 'num_heads': 2, 'd_model': 128,'path':'small_weights','addH':True}
medium = {'name':'Medium','num_layers': 6, 'num_heads': 8, 'd_model': 256,'path':'medium_weights','addH':True}
large = {'name':'Large','num_layers': 12, 'num_heads': 12, 'd_model': 512,'path':'large_weights','addH':True}
arch = medium ## small 3 4 128 medium: 6 6 256 large: 12 8 516
pretraining = True
pretraining_str = 'pretraining' if pretraining else ''
trained_epoch = 10
num_layers = arch['num_layers']
num_heads = arch['num_heads']
d_model = arch['d_model']
addH = arch['addH']
dff = d_model * 2
vocab_size = 17
dropout_rate = 0.1
seed = seed
np.random.seed(seed=seed)
tf.random.set_seed(seed=seed)
train_dataset, test_dataset , val_dataset = Graph_Classification_Dataset('data/clf/{}.csv'.format(task), smiles_field='SMILES',
label_field='Label',addH=True).get_data()
x, adjoin_matrix, y = next(iter(train_dataset.take(1)))
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
model = PredictModel(num_layers=num_layers, d_model=d_model, dff=dff, num_heads=num_heads, vocab_size=vocab_size,
dense_dropout=0.5)
if pretraining:
temp = BertModel(num_layers=num_layers, d_model=d_model, dff=dff, num_heads=num_heads, vocab_size=vocab_size)
pred = temp(x, mask=mask, training=True, adjoin_matrix=adjoin_matrix)
temp.load_weights(arch['path']+'/bert_weights{}_{}.h5'.format(arch['name'],trained_epoch))
temp.encoder.save_weights(arch['path']+'/bert_weights_encoder{}_{}.h5'.format(arch['name'],trained_epoch))
del temp
pred = model(x,mask=mask,training=True,adjoin_matrix=adjoin_matrix)
model.encoder.load_weights(arch['path']+'/bert_weights_encoder{}_{}.h5'.format(arch['name'],trained_epoch))
print('load_wieghts')
optimizer = tf.keras.optimizers.Adam(learning_rate=5e-5)
auc= -10
stopping_monitor = 0
for epoch in range(100):
accuracy_object = tf.keras.metrics.BinaryAccuracy()
loss_object = tf.keras.losses.BinaryCrossentropy(from_logits=True)
for x,adjoin_matrix,y in train_dataset:
with tf.GradientTape() as tape:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x,mask=mask,training=True,adjoin_matrix=adjoin_matrix)
loss = loss_object(y,preds)
grads = tape.gradient(loss, model.trainable_variables)
optimizer.apply_gradients(zip(grads, model.trainable_variables))
accuracy_object.update_state(y,preds)
print('epoch: ',epoch,'loss: {:.4f}'.format(loss.numpy().item()),'accuracy: {:.4f}'.format(accuracy_object.result().numpy().item()))
y_true = []
y_preds = []
for x, adjoin_matrix, y in val_dataset:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x,mask=mask,adjoin_matrix=adjoin_matrix,training=False)
y_true.append(y.numpy())
y_preds.append(preds.numpy())
y_true = np.concatenate(y_true,axis=0).reshape(-1)
y_preds = np.concatenate(y_preds,axis=0).reshape(-1)
y_preds = tf.sigmoid(y_preds).numpy()
auc_new = roc_auc_score(y_true,y_preds)
val_accuracy = keras.metrics.binary_accuracy(y_true.reshape(-1), y_preds.reshape(-1)).numpy()
print('val auc:{:.4f}'.format(auc_new), 'val accuracy:{:.4f}'.format(val_accuracy))
if auc_new > auc:
auc = auc_new
stopping_monitor = 0
np.save('{}/{}{}{}{}{}'.format(arch['path'], task, seed, arch['name'], trained_epoch, trained_epoch,pretraining_str),
[y_true, y_preds])
model.save_weights('classification_weights/{}_{}.h5'.format(task,seed))
print('save model weights')
else:
stopping_monitor += 1
print('best val auc: {:.4f}'.format(auc))
if stopping_monitor>0:
print('stopping_monitor:',stopping_monitor)
if stopping_monitor>20:
break
y_true = []
y_preds = []
model.load_weights('classification_weights/{}_{}.h5'.format(task, seed))
for x, adjoin_matrix, y in test_dataset:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x, mask=mask, adjoin_matrix=adjoin_matrix, training=False)
y_true.append(y.numpy())
y_preds.append(preds.numpy())
y_true = np.concatenate(y_true, axis=0).reshape(-1)
y_preds = np.concatenate(y_preds, axis=0).reshape(-1)
y_preds = tf.sigmoid(y_preds).numpy()
test_auc = roc_auc_score(y_true, y_preds)
test_accuracy = keras.metrics.binary_accuracy(y_true.reshape(-1), y_preds.reshape(-1)).numpy()
print('test auc:{:.4f}'.format(test_auc), 'test accuracy:{:.4f}'.format(test_accuracy))
return test_auc
def main(seed):
# tasks = ['caco2', 'logD', 'logS', 'PPB', 'tox']
# os.environ['CUDA_VISIBLE_DEVICES'] = "1"
keras.backend.clear_session()
os.environ['CUDA_VISIBLE_DEVICES'] = "0"
small = {'name': 'Small', 'num_layers': 3, 'num_heads': 4, 'd_model': 128, 'path': 'small_weights','addH':True}
medium = {'name': 'Medium', 'num_layers': 6, 'num_heads': 8, 'd_model': 256, 'path': 'medium_weights','addH':True}
medium2 = {'name': 'Medium', 'num_layers': 6, 'num_heads': 8, 'd_model': 256, 'path': 'medium_weights2',
'addH': True}
large = {'name': 'Large', 'num_layers': 12, 'num_heads': 12, 'd_model': 576, 'path': 'large_weights','addH':True}
medium_without_H = {'name': 'Medium', 'num_layers': 6, 'num_heads': 8, 'd_model': 256, 'path': 'weights_without_H','addH':False}
medium_without_pretrain = {'name': 'Medium', 'num_layers': 6, 'num_heads': 8, 'd_model': 256,'path': 'medium_without_pretraining_weights','addH':True}
arch = medium ## small 3 4 128 medium: 6 6 256 large: 12 8 516
pretraining = True
pretraining_str = 'pretraining' if pretraining else ''
trained_epoch = 10
task = 'PPB'
print(task)
seed = seed
num_layers = arch['num_layers']
num_heads = arch['num_heads']
d_model = arch['d_model']
addH = arch['addH']
dff = d_model * 2
vocab_size = 17
dropout_rate = 0.1
tf.random.set_seed(seed=seed)
graph_dataset = Graph_Regression_Dataset('data/reg/{}.txt'.format(task), smiles_field='SMILES',
label_field='Label',addH=addH).get_data()
train_dataset, test_dataset,val_dataset = graph_dataset.get_data()
value_range = graph_dataset.value_range()
x, adjoin_matrix, y = next(iter(train_dataset.take(1)))
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
model = PredictModel(num_layers=num_layers, d_model=d_model, dff=dff, num_heads=num_heads, vocab_size=vocab_size,
dense_dropout=0.15)
if pretraining:
temp = BertModel(num_layers=num_layers, d_model=d_model, dff=dff, num_heads=num_heads, vocab_size=vocab_size)
pred = temp(x, mask=mask, training=True, adjoin_matrix=adjoin_matrix)
temp.load_weights(arch['path']+'/bert_weights{}_{}.h5'.format(arch['name'],trained_epoch))
temp.encoder.save_weights(arch['path']+'/bert_weights_encoder{}_{}.h5'.format(arch['name'],trained_epoch))
del temp
pred = model(x, mask=mask, training=True, adjoin_matrix=adjoin_matrix)
model.encoder.load_weights(arch['path']+'/bert_weights_encoder{}_{}.h5'.format(arch['name'],trained_epoch))
print('load_wieghts')
class CustomSchedule(tf.keras.optimizers.schedules.LearningRateSchedule):
def __init__(self, d_model, total_steps=4000):
super(CustomSchedule, self).__init__()
self.d_model = d_model
self.d_model = tf.cast(self.d_model, tf.float32)
self.total_step = total_steps
self.warmup_steps = total_steps*0.10
def __call__(self, step):
arg1 = step/self.warmup_steps
arg2 = 1-(step-self.warmup_steps)/(self.total_step-self.warmup_steps)
return 10e-5* tf.math.minimum(arg1, arg2)
steps_per_epoch = len(train_dataset)
learning_rate = CustomSchedule(128,100*steps_per_epoch)
optimizer = tf.keras.optimizers.Adam(learning_rate=10e-5)
value_range =
r2 = -10
stopping_monitor = 0
for epoch in range(100):
mse_object = tf.keras.metrics.MeanSquaredError()
for x,adjoin_matrix,y in train_dataset:
with tf.GradientTape() as tape:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x,mask=mask,training=True,adjoin_matrix=adjoin_matrix)
loss = tf.reduce_mean(tf.square(y-preds))
grads = tape.gradient(loss, model.trainable_variables)
optimizer.apply_gradients(zip(grads, model.trainable_variables))
mse_object.update_state(y,preds)
print('epoch: ',epoch,'loss: {:.4f}'.format(loss.numpy().item()),'mse: {:.4f}'.format(mse_object.result().numpy().item() * (value_range**2)))
y_true = []
y_preds = []
for x, adjoin_matrix, y in val_dataset:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x,mask=mask,adjoin_matrix=adjoin_matrix,training=False)
y_true.append(y.numpy())
y_preds.append(preds.numpy())
y_true = np.concatenate(y_true,axis=0).reshape(-1)
y_preds = np.concatenate(y_preds,axis=0).reshape(-1)
r2_new = r2_score(y_true,y_preds)
val_mse = keras.metrics.MSE(y_true, y_preds).numpy() * (value_range**2)
print('val r2: {:.4f}'.format(r2_new), 'val mse:{:.4f}'.format(val_mse))
if r2_new > r2:
r2 = r2_new
stopping_monitor = 0
np.save('{}/{}{}{}{}{}'.format(arch['path'], task, seed, arch['name'], trained_epoch, trained_epoch,pretraining_str),
[y_true, y_preds])
model.save_weights('regression_weights/{}.h5'.format(task))
else:
stopping_monitor +=1
print('best r2: {:.4f}'.format(r2))
if stopping_monitor>0:
print('stopping_monitor:',stopping_monitor)
if stopping_monitor>20:
break
y_true = []
y_preds = []
model.load_weights('regression_weights/{}.h5'.format(task, seed))
for x, adjoin_matrix, y in test_dataset:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x, mask=mask, adjoin_matrix=adjoin_matrix, training=False)
y_true.append(y.numpy())
y_preds.append(preds.numpy())
y_true = np.concatenate(y_true, axis=0).reshape(-1)
y_preds = np.concatenate(y_preds, axis=0).reshape(-1)
test_r2 = r2_score(y_true, y_preds)
test_mse = keras.metrics.MSE(y_true.reshape(-1), y_preds.reshape(-1)).numpy() * (value_range**2)
print('test r2:{:.4f}'.format(test_r2), 'test mse:{:.4f}'.format(test_mse))
return r2
except:
train_dataset, dev_dataset = SQuAD1()
old_vocab = train_dataset.vocab
vocab = torchtext.legacy.vocab.Vocab(
counter=old_vocab.freqs, specials=['<unk>', '<pad>', '<MASK>'])
with open(args.save_vocab, 'wb') as f:
torch.save(vocab, f)
pad_id = vocab.stoi['<pad>']
sep_id = vocab.stoi['<sep>']
cls_id = vocab.stoi['<cls>']
train_dataset, dev_dataset = SQuAD1(vocab=vocab)
train_dataset = process_raw_data(train_dataset)
dev_dataset = process_raw_data(dev_dataset)
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
embed_layer = BertEmbedding(len(vocab), args.emsize)
pretrained_bert = BertModel(len(vocab), args.emsize, args.nhead, args.nhid,
args.nlayers, embed_layer, args.dropout)
pretrained_bert.load_state_dict(torch.load(args.bert_model))
model = QuestionAnswerTask(pretrained_bert).to(device)
criterion = nn.CrossEntropyLoss()
optimizer = torch.optim.SGD(model.parameters(), lr=args.lr)
scheduler = torch.optim.lr_scheduler.StepLR(optimizer, 1.0, gamma=0.1)
best_f1 = None
train_loss_log, val_loss_log = [], []
for epoch in range(1, args.epochs + 1):
epoch_start_time = time.time()
train()
val_loss, val_exact, val_f1 = evaluate(dev_dataset, vocab)
val_loss_log.append(val_loss)
print('-' * 89)
print('| end of epoch {:3d} | time: {:5.2f}s | valid loss {:5.2f} | '
def main(seed):
# tasks = ['Ames', 'BBB', 'FDAMDD', 'H_HT', 'Pgp_inh', 'Pgp_sub']
# os.environ['CUDA_VISIBLE_DEVICES'] = "1"
# tasks = ['H_HT', 'Pgp_inh', 'Pgp_sub']
task = 'Ames'
print(task)
medium2 = {
'name': 'Medium',
'num_layers': 6,
'num_heads': 8,
'd_model': 256,
'path': 'medium_weights2',
'addH': True
}
small = {
'name': 'Small',
'num_layers': 3,
'num_heads': 4,
'd_model': 128,
'path': 'small_weights',
'addH': True
}
medium = {
'name': 'Medium',
'num_layers': 6,
'num_heads': 8,
'd_model': 256,
'path': 'medium_weights',
'addH': True
}
large = {
'name': 'Large',
'num_layers': 12,
'num_heads': 12,
'd_model': 516,
'path': 'large_weights',
'addH': True
}
medium_without_H = {
'name': 'Medium',
'num_layers': 6,
'num_heads': 8,
'd_model': 256,
'path': 'weights_without_H',
'addH': False
}
medium_balanced = {
'name': 'Medium',
'num_layers': 6,
'num_heads': 8,
'd_model': 256,
'path': 'weights_balanced',
'addH': True
}
medium_without_pretrain = {
'name': 'Medium',
'num_layers': 6,
'num_heads': 8,
'd_model': 256,
'path': 'medium_without_pretraining_weights',
'addH': True
}
arch = medium ## small 3 4 128 medium: 6 6 256 large: 12 8 516
pretraining = True
pretraining_str = 'pretraining' if pretraining else ''
trained_epoch = 6
num_layers = arch['num_layers']
num_heads = arch['num_heads']
d_model = arch['d_model']
addH = arch['addH']
dff = d_model * 2
vocab_size = 17
dropout_rate = 0.1
seed = seed
np.random.seed(seed=seed)
tf.random.set_seed(seed=seed)
train_dataset1, test_dataset1, val_dataset1 = Graph_Classification_Dataset(
'data\clf\Ames.txt',
smiles_field='SMILES',
label_field='Label',
addH=addH).get_data()
train_dataset2, test_dataset2, val_dataset2 = Graph_Classification_Dataset(
'data\clf\BBB.txt',
smiles_field='SMILES',
label_field='Label',
addH=addH).get_data()
train_dataset3, test_dataset3, val_dataset3 = Graph_Classification_Dataset(
'data\clf\FDAMDD.txt',
smiles_field='SMILES',
label_field='Label',
addH=addH).get_data()
train_dataset4, test_dataset4, val_dataset4 = Graph_Classification_Dataset(
'data\clf\H_HT.txt',
smiles_field='SMILES',
label_field='Label',
addH=addH).get_data()
train_dataset5, test_dataset5, val_dataset5 = Graph_Classification_Dataset(
'data\clf\Pgp_inh.txt',
smiles_field='SMILES',
label_field='Label',
addH=addH).get_data()
train_dataset6, test_dataset6, val_dataset6 = Graph_Classification_Dataset(
'data\clf\Pgp_sub.txt',
smiles_field='SMILES',
label_field='Label',
addH=addH).get_data()
x, adjoin_matrix, y = next(iter(train_dataset1.take(1)))
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
model = PredictModel(num_layers=num_layers,
d_model=d_model,
dff=dff,
num_heads=num_heads,
vocab_size=vocab_size,
dense_dropout=0.2)
if pretraining:
temp = BertModel(num_layers=num_layers,
d_model=d_model,
dff=dff,
num_heads=num_heads,
vocab_size=vocab_size)
pred = temp(x, mask=mask, training=True, adjoin_matrix=adjoin_matrix)
temp.load_weights(
arch['path'] +
'/bert_weights{}_{}.h5'.format(arch['name'], trained_epoch))
temp.encoder.save_weights(arch['path'] +
'/bert_weights_encoder{}_{}.h5'.format(
arch['name'], trained_epoch))
del temp
pred = model(x, mask=mask, training=True, adjoin_matrix=adjoin_matrix)
model.encoder.load_weights(arch['path'] +
'/bert_weights_encoder{}_{}.h5'.format(
arch['name'], trained_epoch))
print('load_wieghts')
class CustomSchedule(tf.keras.optimizers.schedules.LearningRateSchedule):
def __init__(self, d_model, total_steps=4000):
super(CustomSchedule, self).__init__()
self.d_model = d_model
self.d_model = tf.cast(self.d_model, tf.float32)
self.total_step = total_steps
self.warmup_steps = total_steps * 0.06
def __call__(self, step):
arg1 = step / self.warmup_steps
arg2 = 1 - (step - self.warmup_steps) / (self.total_step -
self.warmup_steps)
return 5e-5 * tf.math.minimum(arg1, arg2)
steps_per_epoch = len(train_dataset1)
learning_rate = CustomSchedule(128, 100 * steps_per_epoch)
optimizer = tf.keras.optimizers.Adam(learning_rate=10e-5)
auc = 0
stopping_monitor = 0
for epoch in range(100):
loss_object = tf.keras.losses.BinaryCrossentropy(from_logits=True)
for x1, adjoin_matrix1, y1 in train_dataset1:
x2, adjoin_matrix2, y2 = next(iter(train_dataset2))
x3, adjoin_matrix3, y3 = next(iter(train_dataset3))
x4, adjoin_matrix4, y4 = next(iter(train_dataset4))
x5, adjoin_matrix5, y5 = next(iter(train_dataset5))
x6, adjoin_matrix6, y6 = next(iter(train_dataset6))
with tf.GradientTape() as tape:
seq1 = tf.cast(tf.math.equal(x1, 0), tf.float32)
mask1 = seq1[:, tf.newaxis, tf.newaxis, :]
preds1 = model(x1,
mask=mask1,
training=True,
adjoin_matrix=adjoin_matrix1)
# s1 = model.s[0]
# s2 = model.s[1]
# s3 = model.s[2]
# s4 = model.s[3]
# s5 = model.s[4]
# s6 = model.s[5]
loss1 = loss_object(y1, preds1[:, 0]) * 10
seq2 = tf.cast(tf.math.equal(x2, 0), tf.float32)
mask2 = seq2[:, tf.newaxis, tf.newaxis, :]
preds2 = model(x2,
mask=mask2,
training=True,
adjoin_matrix=adjoin_matrix2)
loss2 = loss_object(y2, preds2[:, 1])
seq3 = tf.cast(tf.math.equal(x3, 0), tf.float32)
mask3 = seq3[:, tf.newaxis, tf.newaxis, :]
preds3 = model(x3,
mask=mask3,
training=True,
adjoin_matrix=adjoin_matrix3)
loss3 = loss_object(y3, preds3[:, 2])
seq4 = tf.cast(tf.math.equal(x4, 0), tf.float32)
mask4 = seq4[:, tf.newaxis, tf.newaxis, :]
preds4 = model(x4,
mask=mask4,
training=True,
adjoin_matrix=adjoin_matrix4)
loss4 = loss_object(y4, preds4[:, 3])
seq5 = tf.cast(tf.math.equal(x5, 0), tf.float32)
mask5 = seq5[:, tf.newaxis, tf.newaxis, :]
preds5 = model(x5,
mask=mask5,
training=True,
adjoin_matrix=adjoin_matrix5)
loss5 = loss_object(y5, preds5[:, 4])
seq6 = tf.cast(tf.math.equal(x6, 0), tf.float32)
mask6 = seq6[:, tf.newaxis, tf.newaxis, :]
preds6 = model(x6,
mask=mask6,
training=True,
adjoin_matrix=adjoin_matrix6)
loss6 = loss_object(y6, preds6[:, 5])
loss = loss1 + loss2 + loss3 + loss4 + loss5 + loss6
grads = tape.gradient(loss, model.trainable_variables)
optimizer.apply_gradients(zip(grads,
model.trainable_variables))
print('epoch: ', epoch, 'loss: {:.4f}'.format(loss.numpy().item()))
y_true = []
y_preds = []
for x, adjoin_matrix, y in test_dataset1:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x,
mask=mask,
adjoin_matrix=adjoin_matrix,
training=False)
y_true.append(y.numpy())
y_preds.append(preds[:, 0].numpy())
y_true = np.concatenate(y_true, axis=0).reshape(-1)
y_preds = np.concatenate(y_preds, axis=0).reshape(-1)
y_preds = tf.sigmoid(y_preds).numpy()
auc_new = roc_auc_score(y_true, y_preds)
test_accuracy = keras.metrics.binary_accuracy(y_true, y_preds).numpy()
print('test auc :{:.4f}'.format(auc_new),
'test accuracy:{:.4f}'.format(test_accuracy))
y_true = []
y_preds = []
for x, adjoin_matrix, y in test_dataset2:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x,
mask=mask,
adjoin_matrix=adjoin_matrix,
training=False)
y_true.append(y.numpy())
y_preds.append(preds[:, 1].numpy())
y_true = np.concatenate(y_true, axis=0).reshape(-1)
y_preds = np.concatenate(y_preds, axis=0).reshape(-1)
y_preds = tf.sigmoid(y_preds).numpy()
auc_new = roc_auc_score(y_true, y_preds)
test_accuracy = keras.metrics.binary_accuracy(y_true, y_preds).numpy()
print('test auc:{:.4f}'.format(auc_new),
'test accuracy:{:.4f}'.format(test_accuracy))
y_true = []
y_preds = []
for x, adjoin_matrix, y in test_dataset3:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x,
mask=mask,
adjoin_matrix=adjoin_matrix,
training=False)
y_true.append(y.numpy())
y_preds.append(preds[:, 2].numpy())
y_true = np.concatenate(y_true, axis=0).reshape(-1)
y_preds = np.concatenate(y_preds, axis=0).reshape(-1)
y_preds = tf.sigmoid(y_preds).numpy()
auc_new = roc_auc_score(y_true, y_preds)
test_accuracy = keras.metrics.binary_accuracy(y_true, y_preds).numpy()
print('test auc :{:.4f}'.format(auc_new),
'test accuracy:{:.4f}'.format(test_accuracy))
y_true = []
y_preds = []
for x, adjoin_matrix, y in test_dataset4:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x,
mask=mask,
adjoin_matrix=adjoin_matrix,
training=False)
y_true.append(y.numpy())
y_preds.append(preds[:, 3].numpy())
y_true = np.concatenate(y_true, axis=0).reshape(-1)
y_preds = np.concatenate(y_preds, axis=0).reshape(-1)
y_preds = tf.sigmoid(y_preds).numpy()
auc_new = roc_auc_score(y_true, y_preds)
test_accuracy = keras.metrics.binary_accuracy(y_true, y_preds).numpy()
print('test auc :{:.4f}'.format(auc_new),
'test accuracy:{:.4f}'.format(test_accuracy))
y_true = []
y_preds = []
for x, adjoin_matrix, y in test_dataset5:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x,
mask=mask,
adjoin_matrix=adjoin_matrix,
training=False)
y_true.append(y.numpy())
y_preds.append(preds[:, 4].numpy())
y_true = np.concatenate(y_true, axis=0).reshape(-1)
y_preds = np.concatenate(y_preds, axis=0).reshape(-1)
y_preds = tf.sigmoid(y_preds).numpy()
auc_new = roc_auc_score(y_true, y_preds)
test_accuracy = keras.metrics.binary_accuracy(y_true, y_preds).numpy()
print('test auc :{:.4f}'.format(auc_new),
'test accuracy:{:.4f}'.format(test_accuracy))
y_true = []
y_preds = []
for x, adjoin_matrix, y in test_dataset6:
seq = tf.cast(tf.math.equal(x, 0), tf.float32)
mask = seq[:, tf.newaxis, tf.newaxis, :]
preds = model(x,
mask=mask,
adjoin_matrix=adjoin_matrix,
training=False)
y_true.append(y.numpy())
y_preds.append(preds[:, 5].numpy())
y_true = np.concatenate(y_true, axis=0).reshape(-1)
y_preds = np.concatenate(y_preds, axis=0).reshape(-1)
y_preds = tf.sigmoid(y_preds).numpy()
auc_new = roc_auc_score(y_true, y_preds)
test_accuracy = keras.metrics.binary_accuracy(y_true, y_preds).numpy()
print('test auc :{:.4f}'.format(auc_new),
'test accuracy:{:.4f}'.format(test_accuracy))
return auc
large = {'name': 'Large', 'num_layers': 12, 'num_heads': 12, 'd_model': 576, 'path': 'large_weights','addH':True}
medium_balanced = {'name':'Medium','num_layers': 6, 'num_heads': 8, 'd_model': 256,'path':'weights_balanced','addH':True}
medium_without_H = {'name':'Medium','num_layers': 6, 'num_heads': 8, 'd_model': 256,'path':'weights_without_H','addH':False}
arch = medium2 ## small 3 4 128 medium: 6 6 256 large: 12 8 516
num_layers = arch['num_layers']
num_heads = arch['num_heads']
d_model = arch['d_model']
addH = arch['addH']
dff = d_model*2
vocab_size =18
dropout_rate = 0.1
model = BertModel(num_layers=num_layers,d_model=d_model,dff=dff,num_heads=num_heads,vocab_size=vocab_size)
train_dataset, test_dataset = Multi_Task_Graph_Bert_Dataset(path='data/chem.txt',smiles_field='CAN_SMILES',addH=addH).get_data()
train_step_signature = [
tf.TensorSpec(shape=(None, None), dtype=tf.int64),
tf.TensorSpec(shape=(None, None,None), dtype=tf.float32),
tf.TensorSpec(shape=(None, None), dtype=tf.int64),
tf.TensorSpec(shape=(None, None), dtype=tf.float32),
]
train_loss = tf.keras.metrics.Mean(name='train_loss')
train_accuracy = tf.keras.metrics.SparseCategoricalAccuracy(name='train_accuracy')
test_accuracy = tf.keras.metrics.SparseCategoricalAccuracy(name='test_accuracy')
loss_function = tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True)
def model_fn(features, labels, mode, params):
"""this is prototype syntax, all parameters are necessary."""
# obtain the data
_info('*** Features ***')
for name in sorted(features.keys()):
tf.logging.info(" name = %s, shape = %s" %
(name, features[name].shape))
input_ids = features['input_ids'] # [batch_size, seq_length]
input_mask = features['input_mask'] # [batch_size, seq_length]
# if mode != tf.estimator.ModeKeys.PREDICT:
# # segment_idx = features['segment_dis']
# masked_lm_positions = features['masked_lm_positions'] # [batch_size, seq_length], specify the answer
# masked_lm_ids = features['masked_lm_ids'] # [batch_size, answer_seq_length], specify the answer labels
# masked_lm_weights = features['masked_lm_weights'] # [batch_size, seq_length], [1, 1, 0], 0 refers to the mask
# # next_sentence_labels = features['next_sentence_labels']
# else:
masked_lm_positions = features['masked_lm_positions']
masked_lm_ids = features['masked_lm_ids']
masked_lm_weights = features['masked_lm_weights']
if bert_config.train_type == 'seq2seq':
_info('Training seq2seq task.')
elif bert_config.train_type == 'lm':
_info('Training language model task.')
# build model
is_training = (mode == tf.estimator.ModeKeys.TRAIN)
model = BertModel(config=bert_config,
is_training=is_training,
input_ids=input_ids,
input_mask=input_mask)
# compute loss
loss, per_loss, log_probs, logits = get_masked_lm_output(
bert_config, model.get_sequence_output(), model.embedding_table,
model.projection_table, masked_lm_positions, masked_lm_ids,
masked_lm_weights, mode)
if mode == tf.estimator.ModeKeys.PREDICT:
masked_lm_predictions = tf.reshape(
tf.argmax(log_probs, axis=-1, output_type=tf.int32), [-1])
output_spec = tf.estimator.EstimatorSpec(
mode, predictions=masked_lm_predictions)
else:
if mode == tf.estimator.ModeKeys.TRAIN:
# restore from the checkpoint,
# tf.estimator automatically restore from the model typically,
# maybe here is for restore some pre-trained parameters
tvars = tf.trainable_variables()
initialized_variable_names = {}
if init_checkpoint:
(assignment_map, initialized_variable_names
) = get_assignment_map_from_checkpoint(
tvars, init_checkpoint)
tf.train.init_from_checkpoint(init_checkpoint,
assignment_map)
_info('*** Trainable Variables ***')
for var in tvars:
init_string = ''
if var.name in initialized_variable_names:
init_string = ', *INIT_FROM_CKPT*'
_info('name = {}, shape={}{}'.format(
var.name, var.shape, init_string))
train_op = optimization.create_optimizer(
loss, bert_config.learning_rate, num_train_steps,
bert_config.lr_limit)
# learning_rate = tf.train.polynomial_decay(bert_config.learning_rate,
# tf.train.get_or_create_global_step(),
# num_train_steps,
# end_learning_rate=0.0,
# power=1.0,
# cycle=False)
# optimizer = tf.train.GradientDescentOptimizer(learning_rate=learning_rate)
# gradients = tf.gradients(loss, tvars, colocate_gradients_with_ops=True)
# clipped_gradients, _ = tf.clip_by_global_norm(gradients, 5.0)
# train_op = optimizer.apply_gradients(zip(clipped_gradients, tvars), global_step=tf.train.get_global_step())
output_spec = tf.estimator.EstimatorSpec(mode,
loss=loss,
train_op=train_op)
elif mode == tf.estimator.ModeKeys.EVAL:
is_real_example = tf.ones(tf.shape(masked_lm_ids),
dtype=tf.float32)
def metric_fn(loss, label_ids, logits, is_real_example):
"""
Args:
loss: tf.float32.
label_ids: [b, s].
logits: [b, s, v].
"""
# [b * s, v]
logits = tf.reshape(logits, [-1, logits.shape[-1]])
# [b * s, 1]
predictions = tf.argmax(logits,
axis=-1,
output_type=tf.int32)
# [b * s]
label_ids = tf.reshape(label_ids, [-1])
accuracy = tf.metrics.accuracy(labels=label_ids,
predictions=predictions)
loss = tf.metrics.mean(values=loss)
return {'eval_accuracy': accuracy, 'eval_loss': loss}
eval_metrics = metric_fn(loss, masked_lm_ids, logits,
is_real_example)
output_spec = tf.estimator.EstimatorSpec(
mode=mode, loss=loss, eval_metric_ops=eval_metrics)
return output_spec
def run_main(args, rank=None):
# Set the random seed manually for reproducibility.
torch.manual_seed(args.seed)
if args.parallel == 'DDP':
n = torch.cuda.device_count() // args.world_size
device = list(range(rank * n, (rank + 1) * n))
else:
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
vocab = torch.load(args.save_vocab)
cls_id = vocab.stoi['<cls>']
pad_id = vocab.stoi['<pad>']
sep_id = vocab.stoi['<sep>']
if args.dataset == 'WikiText103':
from torchtext.experimental.datasets import WikiText103
train_dataset, valid_dataset, test_dataset = WikiText103(vocab=vocab)
elif args.dataset == 'BookCorpus':
from data import BookCorpus
train_dataset, valid_dataset, test_dataset = BookCorpus(vocab, min_sentence_len=60)
if rank is not None:
chunk_len = len(train_dataset.data) // args.world_size
train_dataset.data = train_dataset.data[(rank * chunk_len):((rank + 1) * chunk_len)]
if args.checkpoint != 'None':
model = torch.load(args.checkpoint)
else:
pretrained_bert = BertModel(len(vocab), args.emsize, args.nhead, args.nhid, args.nlayers, args.dropout)
pretrained_bert.load_state_dict(torch.load(args.bert_model))
model = NextSentenceTask(pretrained_bert)
if args.parallel == 'DDP':
model = model.to(device[0])
model = DDP(model, device_ids=device)
else:
model = model.to(device)
criterion = nn.CrossEntropyLoss()
optimizer = torch.optim.SGD(model.parameters(), lr=args.lr)
scheduler = torch.optim.lr_scheduler.StepLR(optimizer, 1.0, gamma=0.1)
best_val_loss = None
train_loss_log, val_loss_log = [], []
for epoch in range(1, args.epochs + 1):
epoch_start_time = time.time()
train(process_raw_data(train_dataset, args), model, train_loss_log, device, optimizer,
criterion, epoch, scheduler, cls_id, sep_id, pad_id, args, rank)
val_loss = evaluate(process_raw_data(valid_dataset, args), model, device, criterion,
cls_id, sep_id, pad_id, args)
val_loss_log.append(val_loss)
if (rank is None) or (rank == 0):
print('-' * 89)
print('| end of epoch {:3d} | time: {:5.2f}s '
'| valid loss {:8.5f} | '.format(epoch,
(time.time() - epoch_start_time),
val_loss))
print('-' * 89)
if not best_val_loss or val_loss < best_val_loss:
if rank is None:
with open(args.save, 'wb') as f:
torch.save(model, f)
elif rank == 0:
with open(args.save, 'wb') as f:
torch.save(model.state_dict(), f)
best_val_loss = val_loss
else:
scheduler.step()
if args.parallel == 'DDP':
rank0_devices = [x - rank * len(device) for x in device]
device_pairs = zip(rank0_devices, device)
map_location = {'cuda:%d' % x: 'cuda:%d' % y for x, y in device_pairs}
model.load_state_dict(torch.load(args.save, map_location=map_location))
test_loss = evaluate(process_raw_data(test_dataset, args), model, device, criterion,
cls_id, sep_id, pad_id, args)
if rank == 0:
wrap_up(train_loss_log, val_loss_log, test_loss, args, model.module, 'ns_loss.txt', 'ns_model.pt')
else:
with open(args.save, 'rb') as f:
model = torch.load(f)
test_loss = evaluate(process_raw_data(test_dataset, args), model, device, criterion,
cls_id, sep_id, pad_id, args)
wrap_up(train_loss_log, val_loss_log, test_loss, args, model, 'ns_loss.txt', 'ns_model.pt')