def valid(valid_loader, seq2seq, epoch):
seq2seq.eval()
total_loss_t = 0
for num, (test_index, test_in, test_in_len,
test_out) in enumerate(valid_loader):
#test_in = test_in.unsqueeze(1)
test_in, test_out = Variable(test_in, volatile=True).cuda(), Variable(
test_out, volatile=True).cuda()
output_t, attn_weights_t = seq2seq(test_in,
test_out,
test_in_len,
teacher_rate=False,
train=False)
batch_count_n = writePredict(epoch, test_index, output_t, 'valid')
test_label = test_out.permute(1, 0)[1:].contiguous().view(-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.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 'n04-015-00-01,171' in test_index:
b = test_index.tolist().index('n04-015-00-01,171')
visualizeAttn(test_in.data[b, 0], test_in_len[0],
[j[b] for j in attn_weights_t], epoch,
batch_count_n[b], 'valid_n04-015-00-01')
total_loss_t /= (num + 1)
return total_loss_t
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 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(train_loader, seq2seq, opt, teacher_rate, epoch, lambd):
seq2seq.train()
total_loss = 0
total_loss_d = 0
for num, (train_index, train_in, train_in_len, train_out,
train_domain) in enumerate(train_loader):
train_in, train_out = Variable(train_in).cuda(), Variable(
train_out).cuda()
train_domain = Variable(train_domain).cuda()
output, attn_weights, out_domain = seq2seq(
train_in,
train_out,
train_in_len,
lambd,
teacher_rate=teacher_rate,
train=True) # (100-1, 32, 62+1)
batch_count_n = writePredict(epoch, train_index, output, 'train')
train_label = train_out.permute(1, 0)[1:].contiguous().view(
-1) #remove<GO>
output_l = output.view(-1, vocab_size) # remove last <EOS>
if VISUALIZE_TRAIN:
if 'e02-074-03-00,191' in train_index:
b = train_index.tolist().index('e02-074-03-00,191')
visualizeAttn(train_in.data[b, 0], train_in_len[0],
[j[b] for j in attn_weights], epoch,
batch_count_n[b], 'train_e02-074-03-00')
if LABEL_SMOOTH:
loss = crit(log_softmax(output_l.view(-1, vocab_size)),
train_label)
else:
loss = F.cross_entropy(output_l.view(-1, vocab_size),
train_label,
ignore_index=tokens['PAD_TOKEN'])
loss2 = F.cross_entropy(out_domain, train_domain)
loss2 = ALPHA * loss2
loss_total = loss + loss2
opt.zero_grad()
loss_total.backward()
opt.step()
total_loss += loss.data[0]
total_loss_d += loss2.data[0]
total_loss /= (num + 1)
total_loss_d /= (num + 1)
return total_loss, total_loss_d
def train(train_loader, seq2seq, opt, teacher_rate, epoch):
seq2seq.train()
total_loss = 0
for num, (train_index, train_in, train_in_len,
train_out) in enumerate(train_loader):
#train_in = train_in.unsqueeze(1)
train_in, train_out = Variable(train_in).cuda(), Variable(
train_out).cuda()
output, attn_weights = seq2seq(train_in,
train_out,
train_in_len,
teacher_rate=teacher_rate,
train=True) # (100-1, 32, 62+1)
batch_count_n = writePredict(epoch, train_index, output, 'train')
train_label = train_out.permute(1, 0)[1:].contiguous().view(
-1) #remove<GO>
output_l = output.view(-1, vocab_size) # remove last <EOS>
if VISUALIZE_TRAIN:
if 'e02-074-03-00,191' in train_index:
b = train_index.tolist().index('e02-074-03-00,191')
visualizeAttn(train_in.data[b, 0], train_in_len[0],
[j[b] for j in attn_weights], epoch,
batch_count_n[b], 'train_e02-074-03-00')
#loss = F.cross_entropy(output_l.view(-1, vocab_size),
# train_label, ignore_index=tokens['PAD_TOKEN'])
#loss = loss_label_smoothing(output_l.view(-1, vocab_size), train_label)
if LABEL_SMOOTH:
loss = crit(log_softmax(output_l.view(-1, vocab_size)),
train_label)
else:
loss = F.cross_entropy(output_l.view(-1, vocab_size),
train_label,
ignore_index=tokens['PAD_TOKEN'])
opt.zero_grad()
loss.backward()
opt.step()
total_loss += loss.item()
print(f'Batch {num} loss: {loss.item()}')
total_loss /= (num + 1)
return total_loss
def valid(valid_loader, seq2seq, epoch):
seq2seq.eval()
total_loss_t = 0
with torch.no_grad():
for num, (test_index, test_in, test_in_len,
test_out) in enumerate(valid_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(epoch, test_index, output_t, 'valid')
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 'n04-015-00-01,171' in test_index:
b = test_index.tolist().index('n04-015-00-01,171')
visualizeAttn(test_in.detach()[b, 0], test_in_len[0],
[j[b] for j in attn_weights_t], epoch,
batch_count_n[b], 'valid_n04-015-00-01')
total_loss_t /= (num + 1)
return total_loss_t