def run():
USE_CUDA = torch.cuda.is_available()
config_path = os.path.join("experiments", FLAGS.config)
if not os.path.exists(config_path):
raise FileNotFoundError
with open(config_path, "r") as f:
config = json.load(f)
config["gpu"] = torch.cuda.is_available()
dataset = ToyDataset(5, 15)
eval_dataset = ToyDataset(5, 15, type='eval')
BATCHSIZE = 30
train_loader = data.DataLoader(dataset,
batch_size=BATCHSIZE,
shuffle=False,
collate_fn=pad_collate,
drop_last=True)
eval_loader = data.DataLoader(eval_dataset,
batch_size=BATCHSIZE,
shuffle=False,
collate_fn=pad_collate,
drop_last=True)
config["batch_size"] = BATCHSIZE
# Models
model = Seq2Seq(config)
if USE_CUDA:
model = model.cuda()
# Optimizer
optimizer = torch.optim.Adam(model.parameters(),
lr=config.get("learning_rate", .001))
print("=" * 60)
print(model)
print("=" * 60)
for k, v in sorted(config.items(), key=lambda i: i[0]):
print(" (" + k + ") : " + str(v))
print()
print("=" * 60)
print("\nInitializing weights...")
for name, param in model.named_parameters():
if 'bias' in name:
torch.nn.init.constant_(param, 0.0)
elif 'weight' in name:
torch.nn.init.xavier_normal_(param)
for epoch in range(FLAGS.epochs):
run_state = (epoch, FLAGS.epochs, FLAGS.train_size)
# Train needs to return model and optimizer, otherwise the model keeps restarting from zero at every epoch
# print("My test: ", model('abcd'))
model, optimizer = train(model, optimizer, train_loader, run_state)
evaluate(model, eval_loader)
def train(vocabs, batch_gen, train_params, model_params):
word2int, int2word = vocabs
num_epoch = train_params['num_epoch']
learn_rate = train_params['learn_rate']
clip = train_params['clip']
eval_every = train_params['eval_every']
train_tf_ratio = train_params['train_tf_ratio']
val_tf_ratio = train_params['val_tf_ratio']
net = Seq2Seq(vocabs=vocabs, device=device, **model_params).to(device)
net.train()
opt = optim.Adam(net.parameters(), lr=learn_rate)
weights = calc_class_weights(batch_gen.data_dict, batch_gen.label_dict)
criterion = nn.CrossEntropyLoss(weight=weights, ignore_index=word2int['<pad>'])
print('Training is starting ...')
train_loss_list = []
val_loss_list = []
for epoch in range(num_epoch):
running_loss = 0
for idx, (x_cap, y_cap) in enumerate(batch_gen.generate('train')):
print('\rtrain:{}/{}'.format(idx, batch_gen.num_iter('train')), flush=True, end='')
x_cap, y_cap = x_cap.to(device), y_cap.to(device)
opt.zero_grad()
output = net(x_cap, y_cap, train_tf_ratio)
loss = criterion(output.view(-1, output.size(2)), y_cap.view(-1).long())
loss.backward()
nn.utils.clip_grad_norm_(net.parameters(), clip)
opt.step()
running_loss += loss.item()
if (idx+1) % eval_every == 0:
print('\n')
val_loss = evaluate(net, word2int, batch_gen, weights, val_tf_ratio)
print("\nEpoch: {}/{}...".format(epoch + 1, num_epoch),
"Step: {}...".format(idx),
"Loss: {:.4f}...".format(running_loss / idx),
"Val Loss: {:.4f}\n".format(val_loss))
print('\nCreating sample captions')
sample(net, vocabs, generator=batch_gen.generate('validation'))
print('\n')
train_loss_list.append(running_loss / idx)
val_loss_list.append(val_loss)
loss_file = open('results/losses.pkl', 'wb')
model_file = open('results/seq2seq.pkl', 'wb')
pickle.dump([train_loss_list, val_loss_list], loss_file)
pickle.dump(net, model_file)
print('Training finished, saving the model')
model_file = open('seq2seq.pkl', 'wb')
pickle.dump(net, model_file)
def evaluate():
reader = PWKPReader()
vocab = Vocabulary.from_files(vocab_dir)
iterator = BasicIterator(batch_size=opt.batch_size)
iterator.index_with(vocab)
model = Seq2Seq(emb_size=opt.emb_size,
hidden_size=opt.hidden_size,
enc_layers=opt.enc_layers,
dec_layers=opt.dec_layers,
dropout=opt.dropout,
bidirectional=opt.bidirectional,
beam_size=opt.beam_size,
label_smoothing=opt.label_smoothing,
vocab=vocab)
model = model.cuda(opt.gpu)
model_state = torch.load(opt.restore, map_location=util.device_mapping(-1))
model.load_state_dict(model_state)
predictor = Predictor(iterator=iterator,
max_decoding_step=opt.max_step,
vocab=vocab,
reader=reader,
data_path=test_path,
log_dir=save_dir,
map_path=ner_path,
cuda_device=opt.gpu)
predictor.evaluate(model)
def instantiate_model(model_name, vocab_size, embed_dim, hidden_dim, lr, bidirectional_encoder,
max_encoder_len, max_decoder_len, eos_token, device=DEVICE,
decoder_num_layers=2, dropout_rate=0.5, embedding_weights=None):
attention = None
if model_name == SEQ2SEQ:
model = Seq2Seq(vocab_size, embed_dim, hidden_dim, max_encoder_len, max_decoder_len,
eos_token, bidirectional_encoder=bidirectional_encoder, num_decoder_layers=decoder_num_layers,
dropout_rate=dropout_rate, embedding_weights=embedding_weights)
attention = Attention(hidden_dim, embed_dim, max_encoder_len)
else:
raise ValueError('wrong value for model_name')
print('model created')
model.to(device)
if not(attention == None):
attention.to(device)
print('model moved to device: ', device)
optimizer = Adam(model.parameters(), lr=lr)
print('optimizer created')
loss_function = CrossEntropyLoss(ignore_index=0, reduction='mean')
print('loss function created')
return model, attention, optimizer, loss_function
def test(test_loader, modelID, showAttn=True):
encoder = Encoder(HIDDEN_SIZE_ENC, HEIGHT, WIDTH, Bi_GRU, CON_STEP,
FLIP).cuda()
decoder = Decoder(HIDDEN_SIZE_DEC, EMBEDDING_SIZE, vocab_size, Attention,
TRADEOFF_CONTEXT_EMBED).cuda()
seq2seq = Seq2Seq(encoder, decoder, output_max_len, vocab_size).cuda()
model_file = 'save_weights/seq2seq-' + str(modelID) + '.model'
pretrain_dict = torch.load(model_file)
seq2seq_dict = seq2seq.state_dict()
pretrain_dict = {
k: v
for k, v in pretrain_dict.items() if k in seq2seq_dict
}
seq2seq_dict.update(pretrain_dict)
seq2seq.load_state_dict(seq2seq_dict) #load
print('Loading ' + model_file)
seq2seq.eval()
total_loss_t = 0
start_t = time.time()
for num, (test_index, test_in, test_in_len, test_out,
test_domain) in enumerate(test_loader):
lambd = LAMBD
test_in, test_out = Variable(test_in, volatile=True).cuda(), Variable(
test_out, volatile=True).cuda()
test_domain = Variable(test_domain, volatile=True).cuda()
output_t, attn_weights_t, out_domain_t = seq2seq(test_in,
test_out,
test_in_len,
lambd,
teacher_rate=False,
train=False)
batch_count_n = writePredict(modelID, test_index, output_t, 'test')
test_label = test_out.permute(1, 0)[1:].contiguous().view(-1)
if LABEL_SMOOTH:
loss_t = crit(log_softmax(output_t.view(-1, vocab_size)),
test_label)
else:
loss_t = F.cross_entropy(output_t.view(-1, vocab_size),
test_label,
ignore_index=tokens['PAD_TOKEN'])
total_loss_t += loss_t.data[0]
if showAttn:
global_index_t = 0
for t_idx, t_in in zip(test_index, test_in):
visualizeAttn(t_in.data[0], test_in_len[0],
[j[global_index_t] for j in attn_weights_t],
modelID, batch_count_n[global_index_t],
'test_' + t_idx.split(',')[0])
global_index_t += 1
total_loss_t /= (num + 1)
writeLoss(total_loss_t, 'test')
print(' TEST loss=%.3f, time=%.3f' %
(total_loss_t, time.time() - start_t))
def __init__(
self,
dataloader,
params,
save_model_every=1, # Every Number of epochs to save after
print_every=1000, # Every Number of batches to print after
dev_loader=None,
#test_loader=None,
vocab=None,
saver=None,
resume_training=False,
resume_epoch=None):
self.save_model_every = save_model_every
self.print_every = print_every
self.params = params
self.vocab = vocab
self.model_name = params[C.MODEL_NAME]
self.start_epoch = 0
self.resume_training = resume_training
self.lr = None
# Data Loaders
self.dataloader = dataloader
self.dev_loader = dev_loader
#self.test_loader = test_loader
# Saver and Logger
self.saver = saver
self.logger = self.saver.logger
# Model
self.model = Seq2Seq(
self.vocab.get_vocab_size(),
hsizes(params, self.model_name),
params,
) if self.dataloader else None
self.logger.log('MODEL : %s' % self.model)
self.logger.log('PARAMS: %s' % self.params)
# Optimizer and loss metrics
if self.resume_training:
self.optimizer, self.metrics = self.saver.load_model_and_state(
resume_epoch, self.model)
self.start_epoch = resume_epoch + 1
else:
self.optimizer = None
self.metrics = TrainerMetrics(self.logger)
self.loss = Loss()
if USE_CUDA:
if self.model:
self.model = self.model.cuda()
def test(test_loader, modelID, showAttn=True):
encoder = Encoder(HIDDEN_SIZE_ENC, HEIGHT, WIDTH, Bi_GRU, CON_STEP,
FLIP).to(device)
decoder = Decoder(HIDDEN_SIZE_DEC, EMBEDDING_SIZE, vocab_size, Attention,
TRADEOFF_CONTEXT_EMBED).to(device)
seq2seq = Seq2Seq(encoder, decoder, output_max_len, vocab_size).to(device)
model_file = 'save_weights/seq2seq-' + str(modelID) + '.model'
print('Loading ' + model_file)
seq2seq.load_state_dict(torch.load(model_file)) #load
seq2seq.eval()
total_loss_t = 0
start_t = time.time()
with torch.no_grad():
for num, (test_index, test_in, test_in_len,
test_out) in enumerate(test_loader):
#test_in = test_in.unsqueeze(1)
test_in, test_out = test_in.to(device), test_out.to(device)
if test_in.requires_grad or test_out.requires_grad:
print(
'ERROR! test_in, test_out should have requires_grad=False')
output_t, attn_weights_t = seq2seq(test_in,
test_out,
test_in_len,
teacher_rate=False,
train=False)
batch_count_n = writePredict(modelID, test_index, output_t, 'test')
test_label = test_out.permute(1, 0)[1:].reshape(-1)
#loss_t = F.cross_entropy(output_t.view(-1, vocab_size),
# test_label, ignore_index=tokens['PAD_TOKEN'])
#loss_t = loss_label_smoothing(output_t.view(-1, vocab_size), test_label)
if LABEL_SMOOTH:
loss_t = crit(log_softmax(output_t.reshape(-1, vocab_size)),
test_label)
else:
loss_t = F.cross_entropy(output_t.reshape(-1, vocab_size),
test_label,
ignore_index=tokens['PAD_TOKEN'])
total_loss_t += loss_t.item()
if showAttn:
global_index_t = 0
for t_idx, t_in in zip(test_index, test_in):
visualizeAttn(t_in.detach()[0], test_in_len[0],
[j[global_index_t] for j in attn_weights_t],
modelID, batch_count_n[global_index_t],
'test_' + t_idx.split(',')[0])
global_index_t += 1
total_loss_t /= (num + 1)
writeLoss(total_loss_t, 'test')
print(' TEST loss=%.3f, time=%.3f' %
(total_loss_t, time.time() - start_t))
def train(dataset, params):
batches = list(
dataset.get_batch(params.batch_size, params.src_max_length,
params.tgt_max_length))
n_batches = (dataset.total_pairs - 1) // params.batch_size + 1
model = Seq2Seq(params, dataset.vocab,
dataset.SPECIAL_TOKENS) # define the model
model = model.to(device)
optimizer = optim.Adam(model.parameters(),
lr=params.lr) # use ADAM optimizer
for epoch_count in range(1, 1 + params.n_epoch):
epoch_loss = 0.
prog_bar = tqdm(range(1, n_batches + 1),
desc='Epoch %d' % epoch_count) # track the progress
model.train()
for batch_count in prog_bar:
optimizer.zero_grad()
batch = batches[batch_count - 1]
source_tensor, target_tensor = batch
source_tensor = source_tensor.to(device)
target_tensor = target_tensor.to(device)
# calculate output and losses
output_tokens, batch_loss = model(source_tensor, target_tensor)
# backward propagation
batch_loss.backward()
optimizer.step()
batch_loss_value = batch_loss.item()
epoch_loss += batch_loss_value
epoch_avg_loss = epoch_loss / batch_count
if batch_count % 100 == 0:
prog_bar.set_postfix(loss='%g' % epoch_avg_loss)
print("\n")
print("Example Article:\n")
print("{}\n".format(" ".join(
[dataset.vocab[i] for i in source_tensor[:, 0]])))
print("Example Summary:\n")
print("{}\n".format(" ".join(
[dataset.vocab[i] for i in target_tensor[:, 0]])))
print("Output Summmary:\n")
print("{}\n".format(" ".join(
[dataset.vocab[i] for i in output_tokens[:, 0]])))
# save model
filename = "{}.{}.pt".format(params.model_path_prefix, epoch_count)
torch.save(model.state_dict(), filename)
def main():
mkdirs(os.path.join('experiments', 'maskmle', args.model_size))
train_loader, test_loader, valid_loader, vocabulary_size = create_ptb_loader(
args.data_dir, args.batch_size, args.seq_len)
# Instantiate and init the model, and move it to the GPU
model = Seq2Seq(vocabulary_size, model_config)
if args.pretrained:
model.load_pretrained_weights(
os.path.join('experiments', 'lm', args.model_size,
'model_best.pth.tar'))
else:
print('NO PRETRAINED LANGUAGE MODEL!!')
return
if CUDA_AVAIL:
model = model.cuda()
criterion = torch.nn.NLLLoss()
# Define optimizer
optimizer = torch.optim.SGD(model.parameters(),
lr=model_config.learning_rate)
lr = model_config.learning_rate
best_val_loss = np.inf
for e in tqdm(range(model_config.max_max_epoch), desc='Epoch'):
model = train(train_loader, model, criterion, optimizer)
val_loss = eval(valid_loader, model, criterion)
state = {
'arch': "RnnLM",
'state_dict': model.state_dict(),
'optimizer': optimizer.state_dict(),
}
if val_loss < best_val_loss:
best_val_loss = val_loss
save_checkpoint(state, folder=args.model_size, is_best=True)
else:
lr /= model_config.lr_decay
optimizer = torch.optim.SGD(model.parameters(), lr=lr)
save_checkpoint(state, folder=args.model_size)
# Test
test_loss = eval(test_loader, model, criterion)
# Report
msg = 'Epoch %d: \tValid loss=%.4f \tTest loss=%.4f \tTest perplexity=%.1f' % (
e + 1, val_loss, test_loss, np.exp(test_loss))
tqdm.write(msg)
def make_gated_dss(config, device):
INPUT_DIM = src_vocab_length()
OUTPUT_DIM = trg_vocab_length()
enc = GatedDSSEncoder(INPUT_DIM,
config.hid_dim,
config.enc_layers,
config.enc_dropout,
device)
dec = GatedDSSDecoder(OUTPUT_DIM,
config.hid_dim,
config.dec_layers,
config.dec_dropout,
device)
return Seq2Seq(enc, dec, device, decode_mask_type="sequence").to(device)
def make_dss_enc_transformer_dec(config, device):
INPUT_DIM = src_vocab_length()
OUTPUT_DIM = trg_vocab_length()
enc = DSSEncoder(INPUT_DIM,
config.hid_dim,
config.enc_layers,
config.enc_dropout,
device)
dec = TransformerDecoder(OUTPUT_DIM,
config.hid_dim,
config.dec_layers,
config.dec_heads,
config.dec_pf_dim,
config.dec_dropout,
device)
return Seq2Seq(enc, dec, device).to(device)
def predict():
outputter = tf.gfile.GFile(FLAGS.output_model_path + "/" +
FLAGS.result_filename,
mode="w")
predict_mode = tf.contrib.learn.ModeKeys.INFER if FLAGS.mode == 'predict' else tf.contrib.learn.ModeKeys.EVAL
model = Seq2Seq()
if predict_mode == tf.contrib.learn.ModeKeys.INFER:
if FLAGS.use_mstf_ops:
pred_pipe = InputPipe(FLAGS.input_validation_data_path,
FLAGS.eval_batch_size, 1, FLAGS.test_fields,
"", True)
else:
pred_pipe = InputPipe(FLAGS.input_validation_data_path,
FLAGS.eval_batch_size, 1, FLAGS.test_fields,
"0", True)
trainer = SingleboxTrainer(model, None, None, None, pred_pipe)
else:
if FLAGS.use_mstf_ops:
red_pipe = InputPipe(FLAGS.input_validation_data_path,
FLAGS.eval_batch_size, 1, FLAGS.test_fields,
"", True)
else:
pred_pipe = InputPipe(FLAGS.input_validation_data_path,
FLAGS.eval_batch_size, 1, FLAGS.test_fields,
"0", True)
trainer = SingleboxTrainer(model, None, None, pred_pipe, None)
scope = tf.get_variable_scope()
scope.reuse_variables()
saver = tf.train.Saver()
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
config.allow_soft_placement = True
with tf.Session(config=config) as sess:
sess.run(tf.local_variables_initializer())
sess.run(tf.tables_initializer())
sess.run(tf.global_variables_initializer())
ckpt = tf.train.get_checkpoint_state(FLAGS.input_previous_model_path)
if ckpt and ckpt.model_checkpoint_path:
saver.restore(sess, ckpt.model_checkpoint_path)
print("Load model from ", ckpt.model_checkpoint_path)
else:
print("No initial model found.")
trainer.predict(sess, predict_mode, outputter)
outputter.close()
def __init__(self, weight_path, have_att=False):
ENC_EMB_DIM = 256
DEC_EMB_DIM = 256
ENC_HID_DIM = 512
DEC_HID_DIM = 512
ENC_DROPOUT = 0.5
DEC_DROPOUT = 0.5
MAX_LEN = 46
self.maxlen = MAX_LEN
self.vocab = Vocab(alphabets)
INPUT_DIM = self.vocab.__len__()
OUTPUT_DIM = self.vocab.__len__()
if have_att:
self.model = Seq2Seq(input_dim=INPUT_DIM,
output_dim=OUTPUT_DIM,
encoder_embbeded=ENC_EMB_DIM,
decoder_embedded=DEC_EMB_DIM,
encoder_hidden=ENC_HID_DIM,
decoder_hidden=DEC_HID_DIM,
encoder_dropout=ENC_DROPOUT,
decoder_dropout=DEC_DROPOUT)
else:
self.model = Seq2Seq_WithoutAtt(input_dim=INPUT_DIM,
output_dim=OUTPUT_DIM,
encoder_embbeded=ENC_EMB_DIM,
decoder_embedded=DEC_EMB_DIM,
encoder_hidden=ENC_HID_DIM,
decoder_hidden=DEC_HID_DIM,
encoder_dropout=ENC_DROPOUT,
decoder_dropout=DEC_DROPOUT)
self.load_weights(weight_path)
if torch.cuda.is_available():
self.device = "cuda"
self.model.to('cuda')
else:
self.device = "cpu"
print("Device: ", self.device)
print("Loaded model")
def __init__(self,
hidden_size,
num_layers,
device='cuda',
drop_prob=0,
lstm=True,
feature_norm=False,
input_size=100,
output_size=100,
bidirectional=True):
super().__init__()
self.seq2seq = Seq2Seq(hidden_size=hidden_size,
num_layers=num_layers,
device='cuda',
drop_prob=drop_prob,
lstm=lstm,
feature_norm=feature_norm,
input_size=input_size,
output_size=output_size,
bidirectional=bidirectional)
def main(args):
train_dataset = BindingDataset('train', args=args)
data_from_train = train_dataset.anony_ques_max_len, train_dataset.anony_query_max_len, train_dataset.anony_ques_vocab, train_dataset.anony_query_vocab
args.anony_ques_max_len, args.anony_query_max_len, args.anony_ques_vocab, args.anony_query_vocab = data_from_train
print(args.anony_ques_max_len, args.anony_query_max_len, len(args.anony_ques_vocab), args.anony_query_vocab)
train_dataloader = DataLoader(dataset=train_dataset, batch_size=args.batch_size, shuffle=args.shuffle)
# build dev_dataloader
args.shuffle = False
dev_dataset = BindingDataset('dev', args=args, data_from_train=data_from_train)
dev_dataloader = DataLoader(dataset=dev_dataset, batch_size=args.batch_size, shuffle=args.shuffle)
# build test_dataloader
# test_dataset = BindingDataset('test', args=args, data_from_train=data_from_train)
# test_dataloader = DataLoader(dataset=test_dataset, batch_size=args.batch_size, shuffle=args.shuffle)
# load word embedding
# train
encoder = Encoder(len(args.anony_ques_vocab), args.word_dim, args.hidden_size,
n_layers=2 * args.num_layers, dropout=args.dropout_p)
decoder = Decoder(args.word_dim, args.hidden_size, len(args.anony_query_vocab),
n_layers=args.num_layers, dropout=args.dropout_p)
model = Seq2Seq(encoder, decoder)
train(train_dataloader, dev_dataloader, args, model)
def test(dataset, params):
batches = list(
dataset.get_batch(params.batch_size, params.src_max_length,
params.tgt_max_length))
n_batches = (dataset.total_pairs - 1) // params.batch_size + 1
model = Seq2Seq(params, dataset.vocab, dataset.SPECIAL_TOKENS)
model = model.to(device)
# load model from saved checkpoint
model.load_state_dict(torch.load(params.model_path_prefix + ".25.pt"))
model.eval()
rouge = Rouge()
pred_texts = []
target_texts = []
source_texts = []
loss_total = 0.
bleu_total = 0.
for batch_count, batch in enumerate(batches):
source_tensor, target_tensor = batch
# get predicted output
with torch.no_grad():
source_tensor = source_tensor.to(device)
target_tensor = target_tensor.to(device)
output_tokens, batch_loss = model.beam_search(
source_tensor, params.beam_size)
batch_loss_value = batch_loss.item()
loss_total += batch_loss_value
pred_text = get_raw_texts(output_tokens,
vocab=dataset.vocab,
special_tokens=dataset.SPECIAL_TOKENS)
pred_texts.extend(pred_text)
target_text = get_raw_texts(target_tensor,
vocab=dataset.vocab,
special_tokens=dataset.SPECIAL_TOKENS)
target_texts.extend(target_text)
source_text = get_raw_texts(source_tensor,
vocab=dataset.vocab,
special_tokens=dataset.SPECIAL_TOKENS)
source_texts.extend(source_text)
# calculate bleu score
for i in range(params.batch_size):
bleu_total += bleu.sentence_bleu([target_text[i]], pred_text[i])
if batch_count % 100 == 0:
print("predicting batch {} / total batch {}".format(
batch_count + 1, n_batches))
# calculate rouge score
scores = rouge.get_scores(pred_texts,
target_texts,
avg=True,
ignore_empty=True)
print("Rouge scores:\n {}\n".format(scores))
bleu_avg = bleu_total / dataset.total_pairs
print("Bleu average scores:\n {}\n".format(bleu_avg))
loss_average = loss_total / n_batches
print("Negative Log Likelihood:\n {}\n".format(loss_average))
for i in range(5):
print("Example: {}\n".format(i + 1))
print("Article: {}\n".format(source_texts[i]))
print("True Summary: {}\n".format(target_texts[i]))
print("Generated Summary: {}\n".format(pred_texts[i]))
def __init__(self, alphabets_, list_ngram):
self.vocab = Vocab(alphabets_)
self.synthesizer = SynthesizeData(vocab_path="")
self.list_ngrams_train, self.list_ngrams_valid = self.train_test_split(
list_ngram, test_size=0.1)
print("Loaded data!!!")
print("Total training samples: ", len(self.list_ngrams_train))
print("Total valid samples: ", len(self.list_ngrams_valid))
INPUT_DIM = self.vocab.__len__()
OUTPUT_DIM = self.vocab.__len__()
self.device = DEVICE
self.num_iters = NUM_ITERS
self.beamsearch = BEAM_SEARCH
self.batch_size = BATCH_SIZE
self.print_every = PRINT_PER_ITER
self.valid_every = VALID_PER_ITER
self.checkpoint = CHECKPOINT
self.export_weights = EXPORT
self.metrics = MAX_SAMPLE_VALID
logger = LOG
if logger:
self.logger = Logger(logger)
self.iter = 0
self.model = Seq2Seq(input_dim=INPUT_DIM,
output_dim=OUTPUT_DIM,
encoder_embbeded=ENC_EMB_DIM,
decoder_embedded=DEC_EMB_DIM,
encoder_hidden=ENC_HID_DIM,
decoder_hidden=DEC_HID_DIM,
encoder_dropout=ENC_DROPOUT,
decoder_dropout=DEC_DROPOUT)
self.optimizer = AdamW(self.model.parameters(),
betas=(0.9, 0.98),
eps=1e-09)
self.scheduler = OneCycleLR(self.optimizer,
total_steps=self.num_iters,
pct_start=PCT_START,
max_lr=MAX_LR)
self.criterion = LabelSmoothingLoss(len(self.vocab),
padding_idx=self.vocab.pad,
smoothing=0.1)
self.train_gen = self.data_gen(self.list_ngrams_train,
self.synthesizer,
self.vocab,
is_train=True)
self.valid_gen = self.data_gen(self.list_ngrams_valid,
self.synthesizer,
self.vocab,
is_train=False)
self.train_losses = []
# to device
self.model.to(self.device)
self.criterion.to(self.device)
def train():
reader = PWKPReader()
train_dataset = reader.read(train_path)
valid_dataset = reader.read(dev_path)
if os.path.exists(vocab_dir):
vocab = Vocabulary.from_files(vocab_dir)
else:
vocab = Vocabulary.from_instances(instances=train_dataset,
max_vocab_size=opt.vocab_size)
vocab.save_to_files(vocab_dir)
iterator = BucketIterator(batch_size=opt.batch_size,
sorting_keys=[("src", "num_tokens"),
("tgt", "num_tokens")])
iterator.index_with(vocab)
model = Seq2Seq(emb_size=opt.emb_size,
hidden_size=opt.hidden_size,
enc_layers=opt.enc_layers,
dec_layers=opt.dec_layers,
dropout=opt.dropout,
bidirectional=opt.bidirectional,
beam_size=opt.beam_size,
label_smoothing=opt.label_smoothing,
vocab=vocab)
optimizer = optim.Adam(model.parameters(), lr=opt.lr)
#learning_rate_scheduler = torch.optim.lr_scheduler.StepLR(optimizer=optimizer, step_size=1, gamma=opt.lr_decay)
val_iterator = BasicIterator(batch_size=opt.batch_size)
val_iterator.index_with(vocab)
predictor = Predictor(iterator=val_iterator,
max_decoding_step=opt.max_step,
vocab=vocab,
reader=reader,
data_path=test_path,
log_dir=save_dir,
map_path=ner_path,
cuda_device=opt.gpu)
trainer = Trainer(
model=model,
optimizer=optimizer,
#learning_rate_scheduler=learning_rate_scheduler,
learning_rate_decay=opt.lr_decay,
ema_decay=opt.ema_decay,
predictor=predictor,
iterator=iterator,
train_dataset=train_dataset,
validation_dataset=valid_dataset,
validation_metric='+bleu',
cuda_device=opt.gpu,
num_epochs=opt.epoch,
serialization_dir=save_dir,
num_serialized_models_to_keep=5,
#model_save_interval=60,
#summary_interval=500,
should_log_parameter_statistics=False,
grad_norm=10)
trainer.train()
def main():
"""Main method to run the models"""
args = parse_args()
dataset = []
vocab = []
whole_data = []
for x in [ques,query]:
dataset.append(VerbalDataset())
#changed - cover_entities
dataset[x].load_data_and_fields(cover_entities=True, query_as_input=x)
vocab.append(dataset[x].get_vocabs())
whole_data.append(dataset[x].get_data())
src_vocab, trg_vocab = vocab[0]
src_vocab_query, trg_vocab_query = vocab[1]
train_data_question, valid_data_question, test_data_question = whole_data[0]
print("train_data_quer", len(list(train_data_question)))
train_data_query, valid_data_query, test_data_query = whole_data[1]
save_vocab(trg_vocab)
print('--------------------------------')
print(f'Model: {args.model}')
print(f'Model input: {args.input}')
if args.model == RNN_NAME:
print(f'Attention: {args.attention}')
print(f'Cover entities: {args.cover_entities}')
print('--------------------------------')
print(f"Training data: {len(train_data_query.examples)}")
print(f"Evaluation data: {len(valid_data_query.examples)}")
print(f"Testing data: {len(test_data_query.examples)}")
print('--------------------------------')
print(f'Question example: {train_data_query.examples[0].src}')
print(f'Answer example: {train_data_query.examples[0].trg}')
print('--------------------------------')
print(f"Unique tokens in questions vocabulary: {len(src_vocab_query)}")
print(f"Unique tokens in answers vocabulary: {len(trg_vocab_query)}")
print('--------------------------------')
print(f'Batch: {args.batch_size}')
print(f'Epochs: {args.epochs_num}')
print('--------------------------------')
if args.model == RNN_NAME and args.attention == ATTENTION_1:
from models.rnn1 import Encoder, Decoder
elif args.model == RNN_NAME and args.attention == ATTENTION_2:
from models.rnn2 import Encoder, Decoder
elif args.model == CNN_NAME:
from models.cnn import Encoder, Decoder
elif args.model == TRANSFORMER_NAME:
from models.transformer import Encoder, Decoder, NoamOpt
# create model
encoder = Encoder(src_vocab, DEVICE)
encoder_query = Encoder(src_vocab_query, DEVICE)
decoder = Decoder(trg_vocab_query, DEVICE)
model = Seq2Seq(encoder, encoder_query, decoder, args.model).to(DEVICE)
parameters_num = sum(p.numel() for p in model.parameters() if p.requires_grad)
print(f'The model has {parameters_num:,} trainable parameters')
print('--------------------------------')
# create optimizer
if model.name == TRANSFORMER_NAME:
# initialize model parameters with Glorot / fan_avg
for p in model.parameters():
if p.dim() > 1:
nn.init.xavier_uniform_(p)
optimizer = NoamOpt(torch.optim.Adam(model.parameters(), lr=0, betas=(0.9, 0.98), eps=1e-9))
else:
optimizer = optim.Adam(model.parameters())
# define criterion
criterion = nn.CrossEntropyLoss(ignore_index=trg_vocab.stoi[PAD_TOKEN])
# train data
trainer = Trainer(optimizer, criterion, args.batch_size, DEVICE)
trainer.train(model, train_data_question, train_data_query, valid_data_question, valid_data_query, num_of_epochs=args.epochs_num)
# load model
model = Chechpoint.load(model)
# generate test iterator
valid_iterator, test_iterator = BucketIterator.splits(
(valid_data_question, test_data_question),
repeat=False,
batch_size=args.batch_size,
sort_within_batch=True if args.model == RNN_NAME else False,
sort_key=lambda x: len(x.src),
device=DEVICE)
valid_iterator_query, test_iterator_query = BucketIterator.splits(
(valid_data_query, test_data_query),
repeat=False,
batch_size=args.batch_size,
sort_within_batch=True if args.model == RNN_NAME else False,
sort_key=lambda x: len(x.src),
device=DEVICE)
# evaluate model
valid_loss = trainer.evaluator.evaluate(model, valid_iterator, valid_iterator_query)
test_loss = trainer.evaluator.evaluate(model, test_iterator, test_iterator_query)
# calculate blue score for valid and test data
predictor = Predictor(model, src_vocab, src_vocab_query, trg_vocab, DEVICE)
valid_scorer = BleuScorer()
test_scorer = BleuScorer()
valid_scorer.data_score(valid_data_question.examples, valid_data_query.examples, predictor)
results, _ = test_scorer.data_score(test_data_question.examples, test_data_query.examples, predictor)
for k in results[0:10]:
print("reference ", k['reference'])
print("hypothesis", k['hypothesis'])
print(f'| Val. Loss: {valid_loss:.3f} | Test PPL: {math.exp(valid_loss):7.3f} |')
print(f'| Val. Data Average BLEU score {valid_scorer.average_score()} |')
print(f'| Val. Data Average METEOR score {valid_scorer.average_meteor_score()} |')
print(f'| Test Loss: {test_loss:.3f} | Test PPL: {math.exp(test_loss):7.3f} |')
print(f'| Test Data Average BLEU score {test_scorer.average_score()} |')
print(f'| Test Data Average METEOR score {test_scorer.average_meteor_score()} |')
print_accuracy_measures(predictions, actuals)
if __name__ == "__main__":
# Init models
models = []
seq2seq = Seq2Seq(name="seq2seq",
data_dict=data_dict,
batch_size=batch_size,
state_size=state_size,
input_feature_amount=input_feature_amount,
output_feature_amount=output_feature_amount,
seq_len_in=seq_len_in,
seq_len_out=seq_len_out,
plot_time_steps_view=plot_time_steps_view,
steps_per_epoch=steps_per_epoch,
epochs=epochs,
learning_rate=learning_rate,
intermediates=intermediates,
plot_loss=plot_loss,
load_weights_path=load_s2s_weights_path,
agg_level=agg_level
)
seq2seq_1dconv = Seq2SeqConv(name="seq2seq_1dconv",
data_dict=data_dict,
batch_size=batch_size,
state_size=state_size,
input_feature_amount=input_feature_amount,
output_feature_amount=output_feature_amount,
def main(train_loader, valid_loader, test_loader):
encoder = Encoder(HIDDEN_SIZE_ENC, HEIGHT, WIDTH, Bi_GRU, CON_STEP,
FLIP).cuda()
decoder = Decoder(HIDDEN_SIZE_DEC, EMBEDDING_SIZE, vocab_size, Attention,
TRADEOFF_CONTEXT_EMBED).cuda()
seq2seq = Seq2Seq(encoder, decoder, output_max_len, vocab_size).cuda()
if CurriculumModelID > 0:
model_file = 'save_weights/seq2seq-' + str(
CurriculumModelID) + '.model'
#model_file = 'save_weights/words/seq2seq-' + str(CurriculumModelID) +'.model'
print('Loading ' + model_file)
seq2seq.load_state_dict(torch.load(model_file)) #load
opt = optim.Adam(seq2seq.parameters(), lr=learning_rate)
#opt = optim.SGD(seq2seq.parameters(), lr=learning_rate, momentum=0.9)
#opt = optim.RMSprop(seq2seq.parameters(), lr=learning_rate, momentum=0.9)
#scheduler = optim.lr_scheduler.StepLR(opt, step_size=20, gamma=1)
scheduler = optim.lr_scheduler.MultiStepLR(opt,
milestones=lr_milestone,
gamma=lr_gamma)
epochs = 5000000
if EARLY_STOP_EPOCH is not None:
min_loss = 1e3
min_loss_index = 0
min_loss_count = 0
if CurriculumModelID > 0 and WORD_LEVEL:
start_epoch = CurriculumModelID + 1
for i in range(start_epoch):
scheduler.step()
else:
start_epoch = 0
for epoch in range(start_epoch, epochs):
scheduler.step()
lr = scheduler.get_lr()[0]
teacher_rate = teacher_force_func(epoch) if TEACHER_FORCING else False
start = time.time()
loss = train(train_loader, seq2seq, opt, teacher_rate, epoch)
writeLoss(loss, 'train')
print('epoch %d/%d, loss=%.3f, lr=%.8f, teacher_rate=%.3f, time=%.3f' %
(epoch, epochs, loss, lr, teacher_rate, time.time() - start))
if epoch % MODEL_SAVE_EPOCH == 0:
folder_weights = 'save_weights'
if not os.path.exists(folder_weights):
os.makedirs(folder_weights)
torch.save(seq2seq.state_dict(),
folder_weights + '/seq2seq-%d.model' % epoch)
start_v = time.time()
loss_v = valid(valid_loader, seq2seq, epoch)
writeLoss(loss_v, 'valid')
print(' Valid loss=%.3f, time=%.3f' % (loss_v, time.time() - start_v))
if EARLY_STOP_EPOCH is not None:
gt = 'RWTH_partition/RWTH.iam_word_gt_final.valid.thresh'
decoded = 'pred_logs/valid_predict_seq.' + str(epoch) + '.log'
res_cer = sub.Popen(['./tasas_cer.sh', gt, decoded],
stdout=sub.PIPE)
res_cer = res_cer.stdout.read().decode('utf8')
loss_v = float(res_cer) / 100
if loss_v < min_loss:
min_loss = loss_v
min_loss_index = epoch
min_loss_count = 0
else:
min_loss_count += 1
if min_loss_count >= EARLY_STOP_EPOCH:
print('Early Stopping at: %d. Best epoch is: %d' %
(epoch, min_loss_index))
return min_loss_index
raw = torch.load('./dat/processed/raw_states.pt')
for index, vects in d.items():
# each is N x 300
input_state, next_state = vects[0], vects[1]
# raw strings corresponding to embeddings
raw_input_state, raw_next_state = list(raw.keys())[index], raw[list(
raw.keys())[index]]
print(raw_input_state)
print(input_state)
print(raw_next_state)
print(next_state)
if index > 1:
break
model = Seq2Seq(hidden_size=2, num_layers=2)
print(model)
for index, vects in d.items():
# each is N x 300
input_state, next_state = vects[0], vects[1]
# raw strings corresponding to embeddings
raw_input_state, raw_next_state = list(raw.keys())[index], raw[list(
raw.keys())[index]]
#print(input_state.unsqueeze(0).shape)
mu = model(input_state.unsqueeze(0)).detach()
#print(mu.shape)
# ACTOR FORMAT
logstd = torch.zeros_like(mu)
def run():
## Load Config from JSON file
dir_path = os.path.dirname(os.path.realpath(__file__))
config_path = os.path.join(dir_path, "experiment", FLAGS.config)
if not os.path.exists(config_path):
raise FileNotFoundError
if not os.path.exists(FLAGS.data_path):
raise FileNotFoundError
with open(config_path, "r") as f:
config = json.load(f)
config["gpu"] = torch.cuda.is_available()
## Load Data
df = dl.load_raw_text_file(FLAGS.data_path, num_examples=30000)
# index language for Input and Output
inp_index = LanguageIndex(phrases=df["es"].values)
targ_index = LanguageIndex(df["eng"].values)
vocab_inp_size = len(inp_index.word2idx)
vocab_tar_size = len(targ_index.word2idx)
# Convert Sentences into tokenized tensors
input_tensor, target_tensor = dl.convert_tensor(df, inp_index, targ_index)
# Split to training and test set
input_tensor_train, input_tensor_val, target_tensor_train, target_tensor_val = train_test_split(
input_tensor, target_tensor, test_size=0.2)
train_dataset = MyData(input_tensor_train, target_tensor_train)
val_dataset = MyData(input_tensor_val, target_tensor_val)
# Conver to DataLoader Object
train_dataset = data.DataLoader(train_dataset,
batch_size=config['batch_size'],
drop_last=True,
shuffle=True)
eval_dataset = data.DataLoader(val_dataset,
batch_size=config['batch_size'],
drop_last=False,
shuffle=True)
# Models
model = Seq2Seq(config, vocab_inp_size, vocab_tar_size)
scorer = create_scorer(config['metrics'])
if config['gpu']:
model = model.cuda()
# Optimizer
optimizer = torch.optim.Adam(model.parameters(),
lr=config.get("learning_rate", .001))
for name, param in model.named_parameters():
if 'bias' in name:
torch.nn.init.constant_(param, 0.0)
elif 'weight' in name:
torch.nn.init.xavier_normal_(param)
print("Weight Initialized")
## Train and Evaluate over epochs
all_train_avg_loss = []
all_eval_avg_loss = []
all_eval_avg_acc = []
for epoch in range(FLAGS.epochs):
run_state = (epoch, FLAGS.epochs)
# Train needs to return model and optimizer, otherwise the model keeps restarting from zero at every epoch
model, optimizer, train_avg_loss = train(model, optimizer,
train_dataset, run_state,
config['debug'])
all_train_avg_loss.append(train_avg_loss)
# Return Val Set Loss and Accuracy
eval_avg_loss, eval_acc = evaluate(model, eval_dataset, targ_index,
scorer, config['debug'])
all_eval_avg_loss.append(eval_avg_loss)
all_eval_avg_acc.append(eval_acc)
# Save Model Checkpoint
checkpoint_dict = {
'epoch': epoch,
'model_state_dict': model.state_dict(),
'optimizer_state_dict': optimizer.state_dict(),
'loss': eval_avg_loss,
}
checkpoint_path = '{}/epoch_{:0.0f}_val_loss_{:0.3f}.pt'.format(
FLAGS.model_checkpoint_dir, epoch, eval_avg_loss)
torch.save(checkpoint_dict, checkpoint_path)
# Export Model Learning Curve Info
df = pd.DataFrame({
'epoch': range(FLAGS.epochs),
'train_loss': all_train_avg_loss,
'eval_loss': all_eval_avg_loss,
'eval_acc': all_eval_avg_acc
})
now = datetime.now()
current_time = now.strftime("%Y%m%d%H%M%S")
export_path = '{}/{}_{:0.0f}_bz_{}_val_loss_{:0.3f}.csv'.format(
FLAGS.metrics_dir, current_time, FLAGS.epochs, config['batch_size'],
eval_avg_loss)
df.to_csv(export_path, index=False)
logger.log('Converting data entries to tensors')
tensor_builder = TensorBuilder(input_lang, output_lang)
train_pairs = [
tensor_builder.tensorsFromPair(pair) for pair in train_pairs
]
valid_pairs = [
tensor_builder.tensorsFromPair(pair) for pair in valid_pairs
]
test_pairs = [
tensor_builder.tensorsFromPair(pair) for pair in test_pairs
]
logger.log('Building the model')
model = Seq2Seq(input_size=input_lang.n_words,
output_size=output_lang.n_words,
hidden_size=constants.HIDDEN_SIZE,
learning_rate=constants.LEARNING_RATE,
teacher_forcing_ratio=constants.TEACHER_FORCING_RATIO,
device=constants.DEVICE)
logger.log(str(model))
logger.log('Initializing evaluators')
evaluator = Evaluator(valid_pairs, input_lang, output_lang)
test_set_evaluator = Evaluator(test_pairs, input_lang, output_lang)
except Exception as e:
# Log the error message and raise it again so see more info
logger.log("Error: " + str(e))
raise e
successful = False
input_lengths[-2] = Ti - 2
padded_input[-1, -3:, ] = 0
input_lengths[-1] = Ti - 3
encoder = Encoder(D, H, Li, bidirectional=B, rnn_type=R)
# Decoder
VOC, EMB, SOS, EOS, L = 10, 3, 8, 9, 2
H = H * 2 if B else H
padded_target = torch.randint(10, (N, To), dtype=torch.long) # N x To
padded_target[-1, -3:] = IGNORE_ID
decoder = Decoder(VOC, EMB, SOS, EOS, H, L)
# Seq2Seq
seq2seq = Seq2Seq(encoder, decoder)
loss = seq2seq(padded_input, input_lengths, padded_target)
print(loss)
# print(decoder_outputs)
# print("To+1 =", len(decoder_outputs))
# print("N, V =", decoder_outputs[0].size())
import argparse
beam_size = 5
nbest = 5
defaults = dict(beam_size=beam_size, nbest=nbest, decode_max_len=0)
args = argparse.Namespace(**defaults)
char_list = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j"]
for i in range(3):
print("\n***** Utt", i + 1)
Ti = i + 20
def main(all_data_loader_func):
encoder = Encoder(HIDDEN_SIZE_ENC, HEIGHT, WIDTH, Bi_GRU, CON_STEP,
FLIP).cuda()
decoder = Decoder(HIDDEN_SIZE_DEC, EMBEDDING_SIZE, vocab_size, Attention,
TRADEOFF_CONTEXT_EMBED).cuda()
seq2seq = Seq2Seq(encoder, decoder, output_max_len, vocab_size).cuda()
if CurriculumModelID > 0:
model_file = 'save_weights/seq2seq-' + str(
CurriculumModelID) + '.model'
print('Loading ' + model_file)
pretrain_dict = torch.load(model_file)
seq2seq_dict = seq2seq.state_dict()
pretrain_dict = {
k: v
for k, v in pretrain_dict.items() if k in seq2seq_dict
}
seq2seq_dict.update(pretrain_dict)
seq2seq.load_state_dict(seq2seq_dict) #load
opt = optim.Adam(seq2seq.parameters(), lr=learning_rate)
scheduler = optim.lr_scheduler.MultiStepLR(opt,
milestones=lr_milestone,
gamma=lr_gamma)
epochs = 5000
if EARLY_STOP_EPOCH is not None:
min_loss = 1e3
min_loss_index = 0
min_loss_count = 0
if CurriculumModelID > 0:
start_epoch = CurriculumModelID + 1
for i in range(start_epoch):
scheduler.step()
else:
start_epoch = 0
for epoch in range(start_epoch, epochs):
# each epoch, random sample training set to be balanced with unlabeled test set
train_loader, valid_loader, test_loader = all_data_loader_func()
scheduler.step()
lr = scheduler.get_lr()[0]
teacher_rate = teacher_force_func(epoch) if TEACHER_FORCING else False
start = time.time()
lambd = return_lambda(epoch)
loss, loss_d = train(train_loader, seq2seq, opt, teacher_rate, epoch,
lambd)
writeLoss(loss, 'train')
writeLoss(loss_d, 'domain_train')
print(
'epoch %d/%d, loss=%.3f, domain_loss=%.3f, lr=%.6f, teacher_rate=%.3f, lambda_pau=%.3f, time=%.3f'
% (epoch, epochs, loss, loss_d, lr, teacher_rate, lambd,
time.time() - start))
if epoch % MODEL_SAVE_EPOCH == 0:
folder_weights = 'save_weights'
if not os.path.exists(folder_weights):
os.makedirs(folder_weights)
torch.save(seq2seq.state_dict(),
folder_weights + '/seq2seq-%d.model' % epoch)
start_v = time.time()
loss_v, loss_v_d = valid(valid_loader, seq2seq, epoch)
writeLoss(loss_v, 'valid')
writeLoss(loss_v_d, 'domain_valid')
print(' Valid loss=%.3f, domain_loss=%.3f, time=%.3f' %
(loss_v, loss_v_d, time.time() - start_v))
test(test_loader, epoch, False) #~~~~~~
if EARLY_STOP_EPOCH is not None:
gt = loadData.GT_TE
decoded = 'pred_logs/valid_predict_seq.' + str(epoch) + '.log'
res_cer = sub.Popen(['./tasas_cer.sh', gt, decoded],
stdout=sub.PIPE)
res_cer = res_cer.stdout.read().decode('utf8')
loss_v = float(res_cer) / 100
if loss_v < min_loss:
min_loss = loss_v
min_loss_index = epoch
min_loss_count = 0
else:
min_loss_count += 1
if min_loss_count >= EARLY_STOP_EPOCH:
print('Early Stopping at: %d. Best epoch is: %d' %
(epoch, min_loss_index))
return min_loss_index
def run():
USE_CUDA = torch.cuda.is_available()
FLAGS.config = 'example_seq2seq.json'
config_path = os.path.join("experiments", FLAGS.config)
print(FLAGS.config)
if not os.path.exists(config_path):
raise FileNotFoundError
with open(config_path, "r") as f:
config = json.load(f)
config["gpu"] = torch.cuda.is_available()
writer = SummaryWriter('experiments/finally')
# dataset = ToyDataset(5, 15)
# eval_dataset = ToyDataset(5, 15, type='eval')
dataset = Toy_Numbers(10)
eval_dataset = Toy_Numbers(10, train=False)
BATCHSIZE = 32
train_loader = data.DataLoader(dataset,
batch_size=BATCHSIZE,
shuffle=False,
collate_fn=pad_collate,
drop_last=True)
eval_loader = data.DataLoader(eval_dataset,
batch_size=BATCHSIZE,
shuffle=False,
collate_fn=pad_collate,
drop_last=True)
config["batch_size"] = BATCHSIZE
# Models
model = Seq2Seq(config)
model = model.float()
# dataiter = iter(train_loader)
# sample_input= dataiter.next()
# writer.add_graph(model, sample_input)
# writer.close()
if USE_CUDA:
model = model.cuda()
# Optimizer
optimizer = torch.optim.Adam(model.parameters(),
lr=config.get("learning_rate", .001))
print("=" * 60)
print(model)
print("=" * 60)
for k, v in sorted(config.items(), key=lambda i: i[0]):
print(" (" + k + ") : " + str(v))
print()
print("=" * 60)
print("\nInitializing weights...")
for name, param in model.named_parameters():
if 'bias' in name:
torch.nn.init.constant_(param, 0.0)
elif 'weight' in name:
torch.nn.init.xavier_normal_(param)
for epoch in range(FLAGS.epochs):
run_state = (epoch, FLAGS.epochs, FLAGS.train_size)
# Train needs to return model and optimizer, otherwise the model keeps restarting from zero at every epoch
model, optimizer = train(model, optimizer, train_loader, run_state,
writer)
# print("losses", l_list)
# for i in l_list:
# # print(i)
# writer.add_scalar('Loss/train',i)
evaluate(model, eval_loader, writer)
def train():
with tf.Graph().as_default(), tf.device('/cpu:0'):
tf.gfile.Copy(FLAGS.input_previous_model_path + "/" +
FLAGS.decoder_vocab_file,
FLAGS.output_model_path + "/" + FLAGS.decoder_vocab_file,
overwrite=True)
global_step = tf.train.get_or_create_global_step()
inc_step = tf.assign_add(global_step, 1)
#Training setting
if FLAGS.use_mstf_ops:
train_input_pipe = InputPipe([
FLAGS.input_training_data_path + "/" + i
for i in tf.gfile.ListDirectory(FLAGS.input_training_data_path)
], FLAGS.batch_size, FLAGS.num_epochs, 2, "", False)
auc_eval_pipe = InputPipe(
FLAGS.input_validation_data_path +
"/label_data.txt", FLAGS.eval_batch_size, 1, 3, "",
False) if FLAGS.auc_evaluation else None
bleu_eval_pipe = InputPipe(
FLAGS.input_validation_data_path +
"/bleu_data.txt", FLAGS.eval_batch_size, 1, 2, "",
False) if FLAGS.bleu_evaluation else None
else:
train_input_pipe = InputPipe([
FLAGS.input_training_data_path + "/" + i
for i in tf.gfile.ListDirectory(FLAGS.input_training_data_path)
], FLAGS.batch_size, FLAGS.num_epochs, 2, "0", False)
auc_eval_pipe = InputPipe(
FLAGS.input_validation_data_path +
"/label_data.txt", FLAGS.eval_batch_size, 1, 3, "0",
False) if FLAGS.auc_evaluation else None
bleu_eval_pipe = InputPipe(
FLAGS.input_validation_data_path +
"/bleu_data.txt", FLAGS.eval_batch_size, 1, 2, "0",
False) if FLAGS.bleu_evaluation else None
model = Seq2Seq()
trainer = SingleboxTrainer(model, inc_step, train_input_pipe,
auc_eval_pipe, bleu_eval_pipe)
summary_op = tf.summary.merge_all()
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
config.allow_soft_placement = True
saver = tf.train.Saver(max_to_keep=FLAGS.max_model_to_keep,
name='model_saver')
with tf.Session(config=config) as session:
summ_writer = tf.summary.FileWriter(FLAGS.log_dir, session.graph)
#Load Pretrain
session.run(tf.local_variables_initializer())
session.run(tf.global_variables_initializer())
session.run(tf.tables_initializer())
session.run(train_input_pipe.iterator.initializer)
ckpt = tf.train.get_checkpoint_state(
FLAGS.input_previous_model_path)
if ckpt and ckpt.model_checkpoint_path:
saver.restore(session, ckpt.model_checkpoint_path)
print("Load Model From ", ckpt.model_checkpoint_path)
else:
print("No Initial Model Found.")
trainer.start_time = time.time()
while True:
try:
_, avg_loss, total_weight, step, summary = session.run(
trainer.train_ops() + [summary_op])
#print(step)
if step % FLAGS.log_frequency == 1:
summ_writer.add_summary(summary, step)
trainer.print_log(total_weight, step, avg_loss)
if step % FLAGS.checkpoint_frequency == 1:
if FLAGS.auc_evaluation:
trainer.eval(step, session, 'auc')
if FLAGS.bleu_evaluation:
trainer.eval(step, session, 'bleu')
if trainer.improved():
saver.save(session,
FLAGS.output_model_path +
"/seq2seq_model",
global_step=step)
elif trainer.early_stop():
print("\nEarly stop")
break
except tf.errors.OutOfRangeError:
print("End of training.")
break
if not trainer.early_stop():
saver.save(session,
FLAGS.output_model_path + "/" +
"seq2seq_model_final",
global_step=step)
def main():
# config for training
config = Config()
print("Normal train config:")
pp(config)
valid_config = Config()
valid_config.dropout = 0
valid_config.batch_size = 20
# config for test
test_config = Config()
test_config.dropout = 0
test_config.batch_size = 1
with_sentiment = config.with_sentiment
###############################################################################
# Load data
###############################################################################
# sentiment data path: ../ final_data / poem_with_sentiment.txt
# 该path必须命令行显示输入LoadPoem，因为defaultNonehjk
# 处理pretrain数据和完整诗歌数据
# api = LoadPoem(args.train_data_dir, args.test_data_dir, args.max_vocab_size)
api = LoadPoem(corpus_path=args.train_data_dir,
test_path=args.test_data_dir,
max_vocab_cnt=config.max_vocab_cnt,
with_sentiment=with_sentiment)
# 交替训练，准备大数据集
poem_corpus = api.get_tokenized_poem_corpus(
type=1 + int(with_sentiment)) # corpus for training and validation
test_data = api.get_tokenized_test_corpus() # 测试数据
# 三个list，每个list中的每一个元素都是 [topic, last_sentence, current_sentence]
train_poem, valid_poem, test_poem = poem_corpus["train"], poem_corpus[
"valid"], test_data["test"]
train_loader = SWDADataLoader("Train", train_poem, config)
valid_loader = SWDADataLoader("Valid", valid_poem, config)
test_loader = SWDADataLoader("Test", test_poem, config)
print("Finish Poem data loading, not pretraining or alignment test")
if not args.forward_only:
# LOG #
log_start_time = str(datetime.now().strftime('%Y%m%d%H%M'))
if not os.path.isdir('./output'):
os.makedirs('./output')
if not os.path.isdir('./output/{}'.format(args.expname)):
os.makedirs('./output/{}'.format(args.expname))
if not os.path.isdir('./output/{}/{}'.format(args.expname,
log_start_time)):
os.makedirs('./output/{}/{}'.format(args.expname, log_start_time))
# save arguments
json.dump(
vars(args),
open(
'./output/{}/{}/args.json'.format(args.expname,
log_start_time), 'w'))
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.DEBUG, format="%(message)s")
fh = logging.FileHandler("./output/{}/{}/logs.txt".format(
args.expname, log_start_time))
# add the handlers to the logger
logger.addHandler(fh)
logger.info(vars(args))
tb_writer = SummaryWriter("./output/{}/{}/tb_logs".format(
args.expname, log_start_time)) if args.visual else None
if config.reload_model:
model = load_model(config.model_name)
else:
if args.model == "mCVAE":
model = CVAE_GMP(config=config, api=api)
elif args.model == 'CVAE':
model = CVAE(config=config, api=api)
else:
model = Seq2Seq(config=config, api=api)
if use_cuda:
model = model.cuda()
# if corpus.word2vec is not None and args.reload_from<0:
# print("Loaded word2vec")
# model.embedder.weight.data.copy_(torch.from_numpy(corpus.word2vec))
# model.embedder.weight.data[0].fill_(0)
###############################################################################
# Start training
###############################################################################
# model依然是PoemWAE_GMP保持不变，只不过，用这部分数据强制训练其中一个高斯先验分布
# pretrain = True
cur_best_score = {
'min_valid_loss': 100,
'min_global_itr': 0,
'min_epoch': 0,
'min_itr': 0
}
train_loader.epoch_init(config.batch_size, shuffle=True)
# model = load_model(3, 3)
epoch_id = 0
global_t = 0
while epoch_id < config.epochs:
while True: # loop through all batches in training data
# train一个batch
model, finish_train, loss_records, global_t = \
train_process(global_t=global_t, model=model, train_loader=train_loader, config=config, sentiment_data=with_sentiment)
if finish_train:
test_process(model=model,
test_loader=test_loader,
test_config=test_config,
logger=logger)
# evaluate_process(model=model, valid_loader=valid_loader, log_start_time=log_start_time, global_t=global_t, epoch=epoch_id, logger=logger, tb_writer=tb_writer, api=api)
# save model after each epoch
save_model(model=model,
epoch=epoch_id,
global_t=global_t,
log_start_time=log_start_time)
logger.info(
'Finish epoch %d, current min valid loss: %.4f \
correspond epoch: %d itr: %d \n\n' %
(cur_best_score['min_valid_loss'],
cur_best_score['min_global_itr'],
cur_best_score['min_epoch'],
cur_best_score['min_itr']))
# 初始化下一个unlabeled data epoch的训练
# unlabeled_epoch += 1
epoch_id += 1
train_loader.epoch_init(config.batch_size, shuffle=True)
break
# elif batch_idx >= start_batch + config.n_batch_every_iter:
# print("Finish unlabel epoch %d batch %d to %d" %
# (unlabeled_epoch, start_batch, start_batch + config.n_batch_every_iter))
# start_batch += config.n_batch_every_iter
# break
# 写一下log
if global_t % config.log_every == 0:
log = 'Epoch id %d: step: %d/%d: ' \
% (epoch_id, global_t % train_loader.num_batch, train_loader.num_batch)
for loss_name, loss_value in loss_records:
if loss_name == 'avg_lead_loss':
continue
log = log + loss_name + ':%.4f ' % loss_value
if args.visual:
tb_writer.add_scalar(loss_name, loss_value,
global_t)
logger.info(log)
# valid
if global_t % config.valid_every == 0:
# test_process(model=model, test_loader=test_loader, test_config=test_config, logger=logger)
valid_process(
global_t=global_t,
model=model,
valid_loader=valid_loader,
valid_config=valid_config,
unlabeled_epoch=
epoch_id, # 如果sample_rate_unlabeled不是1，这里要在最后加一个1
tb_writer=tb_writer,
logger=logger,
cur_best_score=cur_best_score)
# if batch_idx % (train_loader.num_batch // 3) == 0:
# test_process(model=model, test_loader=test_loader, test_config=test_config, logger=logger)
if global_t % config.test_every == 0:
test_process(model=model,
test_loader=test_loader,
test_config=test_config,
logger=logger)
# forward_only 测试
else:
expname = 'sentInput'
time = '202101191105'
model = load_model(
'./output/{}/{}/model_global_t_13596_epoch3.pckl'.format(
expname, time))
test_loader.epoch_init(test_config.batch_size, shuffle=False)
if not os.path.exists('./output/{}/{}/test/'.format(expname, time)):
os.mkdir('./output/{}/{}/test/'.format(expname, time))
output_file = [
open('./output/{}/{}/test/output_0.txt'.format(expname, time),
'w'),
open('./output/{}/{}/test/output_1.txt'.format(expname, time),
'w'),
open('./output/{}/{}/test/output_2.txt'.format(expname, time), 'w')
]
poem_count = 0
predict_results = {0: [], 1: [], 2: []}
titles = {0: [], 1: [], 2: []}
sentiment_result = {0: [], 1: [], 2: []}
# Get all poem predictions
while True:
model.eval()
batch = test_loader.next_batch_test() # test data使用专门的batch
poem_count += 1
if poem_count % 10 == 0:
print("Predicted {} poems".format(poem_count))
if batch is None:
break
title_list = batch # batch size是1，一个batch写一首诗
title_tensor = to_tensor(title_list)
# test函数将当前batch对应的这首诗decode出来，记住每次decode的输入context是上一次的结果
for i in range(3):
sentiment_label = np.zeros(1, dtype=np.int64)
sentiment_label[0] = int(i)
sentiment_label = to_tensor(sentiment_label)
output_poem, output_tokens = model.test(
title_tensor, title_list, sentiment_label=sentiment_label)
titles[i].append(output_poem.strip().split('\n')[0])
predict_results[i] += (np.array(output_tokens)[:, :7].tolist())
# Predict sentiment use the sort net
from collections import defaultdict
neg = defaultdict(int)
neu = defaultdict(int)
pos = defaultdict(int)
total = defaultdict(int)
for i in range(3):
_, neg[i], neu[i], pos[i] = test_sentiment(predict_results[i])
total[i] = neg[i] + neu[i] + pos[i]
for i in range(3):
print("%d%%\t%d%%\t%d%%" %
(neg * 100 / total, neu * 100 / total, pos * 100 / total))
for i in range(3):
write_predict_result_to_file(titles[i], predict_results[i],
sentiment_result[i], output_file[i])
output_file[i].close()
print("Done testing")
def train_net(args):
torch.manual_seed(7)
np.random.seed(7)
checkpoint = args.checkpoint
start_epoch = 0
best_loss = float('inf')
writer = SummaryWriter()
epochs_since_improvement = 0
# Initialize / load checkpoint
if checkpoint is None:
# model
encoder = Encoder(args.einput, args.ehidden, args.elayer,
dropout=args.edropout, bidirectional=args.ebidirectional,
rnn_type=args.etype)
decoder = Decoder(vocab_size, args.dembed, sos_id,
eos_id, args.dhidden, args.dlayer,
bidirectional_encoder=args.ebidirectional)
model = Seq2Seq(encoder, decoder)
print(model)
model.cuda()
optimizer = torch.optim.Adam(model.parameters(), betas=(0.9, 0.98), eps=1e-09)
else:
checkpoint = torch.load(checkpoint)
start_epoch = checkpoint['epoch'] + 1
epochs_since_improvement = checkpoint['epochs_since_improvement']
model = checkpoint['model']
optimizer = checkpoint['optimizer']
logger = get_logger()
# Custom dataloaders
train_dataset = AiShellDataset(args, 'train')
train_loader = torch.utils.data.DataLoader(train_dataset, batch_size=args.batch_size, collate_fn=pad_collate,
pin_memory=True, shuffle=True, num_workers=num_workers)
valid_dataset = AiShellDataset(args, 'dev')
valid_loader = torch.utils.data.DataLoader(valid_dataset, batch_size=args.batch_size, collate_fn=pad_collate,
pin_memory=True, shuffle=False, num_workers=num_workers)
# Epochs
for epoch in range(start_epoch, args.epochs):
# Halving learning rate when get small improvement
if args.half_lr and epochs_since_improvement > 0:
adjust_learning_rate(optimizer, 0.5)
# One epoch's training
train_loss = train(train_loader=train_loader,
model=model,
optimizer=optimizer,
epoch=epoch,
logger=logger)
writer.add_scalar('Train_Loss', train_loss, epoch)
lr = get_learning_rate(optimizer)
print('Learning rate: {}\n'.format(lr))
writer.add_scalar('Learning_Rate', lr, epoch)
# One epoch's validation
valid_loss = valid(valid_loader=valid_loader,
model=model,
logger=logger)
writer.add_scalar('Valid_Loss', valid_loss, epoch)
# Check if there was an improvement
is_best = valid_loss < best_loss
best_loss = min(valid_loss, best_loss)
if not is_best:
epochs_since_improvement += 1
print("\nEpochs since last improvement: %d\n" % (epochs_since_improvement,))
else:
epochs_since_improvement = 0
# Save checkpoint
save_checkpoint(epoch, epochs_since_improvement, model, optimizer, best_loss, is_best)
