continue
else:
loss += criterion(decoder_output[k], y[:, k, di])
else:
loss += criterion(decoder_output[k], y[:, k, di])
y = y.squeeze(0)
# if int(topi[0]) == 0:
# break
loss.backward()
encoder_optimizer1.step()
decoder_optimizer1.step()
return loss.item()
encoder = densenet121()
pthfile = r'densenet121-a639ec97.pth'
pretrained_dict = torch.load(pthfile)
#pretrained_dict = torch.hub.load('pytorch/vision:v0.4.2', 'densenet121', pretrained=True)
#pretrained_dict.eval()
encoder_dict = encoder.state_dict()
pretrained_dict = {
k: v
for k, v in pretrained_dict.items() if k in encoder_dict
}
encoder_dict.update(pretrained_dict)
encoder.load_state_dict(encoder_dict)
def for_test(x_t):
if torch.cuda.is_available():
device = torch.device('cuda')
else:
device = torch.device('cpu')
h_mask_t = []
w_mask_t = []
encoder = densenet121()
attn_decoder1 = AttnDecoderRNN(hidden_size, 256, dropout_p=0.5)
encoder = torch.nn.DataParallel(encoder, device_ids=device_ids)
attn_decoder1 = torch.nn.DataParallel(attn_decoder1, device_ids=device_ids)
if torch.cuda.is_available():
encoder = encoder.cuda()
attn_decoder1 = attn_decoder1.cuda()
encoder.load_state_dict(
torch.load(
'../model/encoder_lr0.00000_GN_te1_d05_SGD_bs6_mask_conv_bn_b_xavier.pkl',
map_location=device))
attn_decoder1.load_state_dict(
torch.load(
'../model/attn_decoder_lr0.00000_GN_te1_d05_SGD_bs6_mask_conv_bn_b_xavier.pkl',
map_location=device))
encoder.eval()
attn_decoder1.eval()
x_t = Variable(x_t)
if torch.cuda.is_available():
x_t = Variable(x_t.cuda())
x_mask = torch.ones(x_t.size()[0],
x_t.size()[1],
x_t.size()[2],
x_t.size()[3])
if torch.cuda.is_available():
x_mask = x_mask.cuda()
x_t = torch.cat((x_t, x_mask), dim=1)
x_real_high = x_t.size()[2]
x_real_width = x_t.size()[3]
h_mask_t.append(int(x_real_high))
w_mask_t.append(int(x_real_width))
x_real = x_t[0][0].view(x_real_high, x_real_width)
output_highfeature_t = encoder(x_t)
x_mean_t = torch.mean(output_highfeature_t)
x_mean_t = float(x_mean_t)
output_area_t1 = output_highfeature_t.size()
output_area_t = output_area_t1[3]
dense_input = output_area_t1[2]
decoder_input_t = torch.LongTensor([111] * batch_size_t)
if torch.cuda.is_available():
decoder_input_t = decoder_input_t.cuda()
decoder_hidden_t = torch.randn(batch_size_t, 1, hidden_size)
if torch.cuda.is_available():
decoder_hidden_t = decoder_hidden_t.cuda()
# nn.init.xavier_uniform_(decoder_hidden_t)
decoder_hidden_t = decoder_hidden_t * x_mean_t
decoder_hidden_t = torch.tanh(decoder_hidden_t)
prediction = torch.zeros(batch_size_t, maxlen)
# label = torch.zeros(batch_size_t,maxlen)
prediction_sub = []
label_sub = []
decoder_attention_t = torch.zeros(batch_size_t, 1, dense_input,
output_area_t)
attention_sum_t = torch.zeros(batch_size_t, 1, dense_input, output_area_t)
if torch.cuda.is_available():
decoder_attention_t = decoder_attention_t.cuda()
attention_sum_t = attention_sum_t.cuda()
decoder_attention_t_cat = []
for i in range(maxlen):
decoder_output, decoder_hidden_t, decoder_attention_t, attention_sum_t = attn_decoder1(
decoder_input_t, decoder_hidden_t, output_highfeature_t,
output_area_t, attention_sum_t, decoder_attention_t, dense_input,
batch_size_t, h_mask_t, w_mask_t, device_ids)
decoder_attention_t_cat.append(
decoder_attention_t[0].data.cpu().numpy())
topv, topi = torch.max(decoder_output, 2)
if torch.sum(topi) == 0:
break
decoder_input_t = topi
decoder_input_t = decoder_input_t.view(batch_size_t)
# prediction
prediction[:, i] = decoder_input_t
k = numpy.array(decoder_attention_t_cat)
x_real = numpy.array(x_real.cpu().data)
prediction = prediction[0]
prediction_real = []
for ir in range(len(prediction)):
if int(prediction[ir]) == 0:
break
prediction_real.append(worddicts_r[int(prediction[ir])])
prediction_real.append('<eol>')
prediction_real_show = numpy.array(prediction_real)
return k, prediction_real_show