def criterion(logits, targets, sent_num, decoder):
return sequence_loss(logits,
targets,
sent_num,
decoder,
ce,
pad_idx=-1)
def criterion(logits, cls_pro, targets, word2id):
return sequence_loss(logits,
cls_pro,
targets,
word2id,
True,
nll,
pad_idx=PAD)
def criterion(logit1_sent, logit_en, target_sent, target_en):
sent_loss = sequence_loss(logit1_sent, target_sent, ce, pad_idx=-1)
#entity_loss = F.binary_cross_entropy_with_logits(logit_en, target_en)
print('logit_en:', logit_en)
print('target_en:', target_en)
entity_loss = binary_sequence_loss(logit_en, target_en, bce, pad_idx=-1)
print('entity loss: {:.4f}'.format(entity_loss.mean().item()), end=' ')
loss = sent_loss.mean() + entity_loss.mean()
del entity_loss, sent_loss
return loss
def criterion(logits1, logits2, targets1, targets2):
aux_loss = None
for logit in logits2:
if aux_loss is None:
aux_loss = sequence_loss(logit,
targets2,
bce,
pad_idx=-1,
if_aux=True,
fp16=False).mean()
else:
aux_loss += sequence_loss(logit,
targets2,
bce,
pad_idx=-1,
if_aux=True,
fp16=False).mean()
return (sequence_loss(logits1, targets1, nll,
pad_idx=PAD).mean(), aux_loss)
def criterion(logits, targets):
return sequence_loss(logits, targets, ce, pad_idx=-1)
def criterion(logits, targets):
return sequence_loss(logits, targets, nll, pad_idx=PAD)
def criterion(logits, targets):
return sequence_loss(logits, targets, ce, pad_idx=-1)
def main(args):
print("\nParameters:")
for attr, value in sorted(vars(args).items()):
print("{}={}".format(attr.upper(), value))
print("")
# Selecting wihch GPU to use
os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu_list
args.cuda = torch.cuda.is_available() and not args.no_cuda
# Output directory for models and summaries
out_dir = os.path.join(args.log, args.exp_name)
if not os.path.exists(out_dir):
os.makedirs(out_dir)
print('Writing to {}\n'.format(out_dir))
save_hparams(args, os.path.join(out_dir, 'hparams'))
# Checkpoint directory
checkpoint_dir = os.path.join(out_dir, 'checkpoints')
checkpoint_prefix = os.path.join(checkpoint_dir, 'model')
if not os.path.exists(checkpoint_dir):
os.makedirs(checkpoint_dir)
# Build dataset
time_str = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
print("Create training dataset begain... | %s " % time_str)
test_seen_dataset = KGDataset(args.test_seen_file, max_knowledge=999)
test_unseen_dataset = KGDataset(args.test_unseen_file, max_knowledge=999)
test_seen_loader = get_batch_loader(test_seen_dataset,
collate_fn=collate_fn,
batch_size=args.eval_batch_size,
is_test=True)
test_unseen_loader = get_batch_loader(test_unseen_dataset,
collate_fn=collate_fn,
batch_size=args.eval_batch_size,
is_test=True)
time_str = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
print("Create training dataset end... | %s " % time_str)
# Batcher
dis_batcher = DisBatcher(args.bert_truncate, args.bert_config, args.cuda)
gen_batcher = GenBatcher(args.knowledge_truncate, args.text_truncate,
args.gpt2_truncate, args.gpt2_config, args.cuda)
# Load model
dis_model = load_dis_net(args.emb_dim, args.lstm_hidden, args.lstm_layer,
args.bert_config, args.dis_pretrain_file,
args.load_dis, args.cuda)
gen_model = load_gen_net(gen_batcher.tokenizer, args.segment,
args.gpt2_config, args.gen_pretrain_file,
args.load_gen, args.cuda)
ce = lambda logit, target: F.cross_entropy(logit, target, reduce=False)
gen_criterion = lambda logits, targets: sequence_loss(
logits, targets, ce, pad_idx=-1)
def dev_step(split, global_step):
if split == 'test_seen':
test_loader = test_seen_loader
elif split == 'test_unseen':
test_loader = test_unseen_loader
else:
raise ValueError
dis_model.eval()
gen_model.eval()
n_token, test_loss = 0, 0.0 # ppl
test_hyp, test_ref = [], []
count = 0
with torch.no_grad():
for knowledges, histories, users, responses, knowledge_lens in test_loader:
knowledges = [know.split('\n\n') for know in knowledges]
histories = [his.split('\n\n') for his in histories]
dis_args = dis_batcher(knowledges, histories, knowledge_lens,
args.n_sent)
dis_out = dis_model(*dis_args)
dis_knowledges = [[knowledges[bi][dis_out[0][bi].item()]]
for bi in range(len(knowledges))]
gen_args = gen_batcher(dis_knowledges, histories, users,
responses, args.segment, True)
loss = gen_criterion(
gen_model(gen_args[0], token_type_ids=gen_args[1])[0],
gen_args[2])
n_token += loss.size(0)
test_loss += loss.sum().item()
for bi in range(len(dis_knowledges)):
dec_in = gen_batcher(dis_knowledges[bi:bi + 1],
histories[bi:bi + 1],
users[bi:bi + 1],
segment=args.segment,
training=False)
dec_out = gen_model.batch_decode(
dec_in, args.max_length, args.min_length,
args.early_stopping, args.beam_size,
args.repetition_penalty, gen_batcher.eos_id,
args.length_penalty, args.no_repeat_ngram_size)
dec_out = dec_out[0].tolist()[dec_in.size(1):]
_hyp = gen_batcher.tokenizer.decode(
dec_out,
skip_special_tokens=True,
clean_up_tokenization_spaces=False)
_ref = responses[bi]
test_hyp.append(_hyp)
test_ref.append(_ref)
count += 1
if count % 1000 == 0:
print(count)
with open(
os.path.join(
out_dir,
'{}-decoded-iter-{}.txt'.format(split, global_step)),
'w') as f:
for _hyp, _ref in zip(test_hyp, test_ref):
f.writelines('{} ||| {}\n'.format(_hyp, _ref))
MeanLoss = test_loss / n_token
b1, b2, b3, b4 = bleu_metric(test_hyp, test_ref)
d1, d2 = distinct_metric(test_hyp)
f1 = f1_metric(test_hyp, test_ref)
time_str = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
print("**********************************")
print("{} results..........".format(split))
print('hypothesis: ', len(test_hyp))
print("Step: %d \t| ppl: %.3f \t| %s" %
(global_step, math.exp(MeanLoss), time_str))
print("BLEU-1/2/3/4: {:.4f}/{:.4f}/{:.4f}/{:.4f}".format(
b1, b2, b3, b4))
print("Distinct-1/2: {:.4f}/{:.4f}".format(d1, d2))
print("F1: {:.4f}".format(f1))
print("**********************************")
return {
'f1': f1,
'loss': MeanLoss,
'bleu1': b1,
'bleu2': b2,
'bleu3': b3,
'bleu4': b4,
'distinct1': d1,
'distinct2': d2
}
dev_step("test_seen", 0) # test_random_split
dev_step("test_unseen", 0) # test_topic_split
def criterion(logits, targets):
return sequence_loss(logits, targets, nll, pad_idx=PAD)