def train(epoch):
global acc, acc_train
net.train()
train_loss = 0
correct = 0
total = 0
if epoch > lr_dec_start and lr_dec_start >= 0:
frac = (epoch - lr_dec_start) // lr_dec_every
dec_frac = lr_dec_rate ** frac #0.9 ** e/5
curr_lr = lr * dec_frac #0.9 ** e/5
utils.set_lr(optimizer, curr_lr)
else:
curr_lr = lr
# print(1)
for batch_idx, (inputs, targets) in enumerate(tr_loader):
if use_cuda:
inputs, targets = inputs.cuda(), targets.cuda()
optimizer.zero_grad()
inputs, targets = Variable(inputs), Variable(targets)
outputs = net(inputs)
loss = criterion(outputs, targets)
loss.backward()
utils.clip_gradient(optimizer, 0.1)
optimizer.step()
train_loss += float(loss.item())
_, pred = torch.max(outputs.data, 1)
total += targets.size(0)
correct += pred.eq(targets.data).cpu().sum()
# print(2)
if epoch == total_epoch - 1:
class_mat[0] = calcl_mat(pred.cpu().numpy(), targets.data.cpu().numpy(), class_mat[0])
print("training... batch:{} loss={} acc={}%({}/{})".format(batch_idx, train_loss/(batch_idx+1), 100.*correct/total,correct,total))
acc_train = 100.*correct / total
hists[0].append(train_loss/(batch_idx+1))
hists[1].append(acc_train)
def train(epoch):
model.train()
import random
if epoch > decay_epoch_start:
frac = (epoch-decay_epoch_start) // decay_every
decay_frac = (decay_rate)**frac
curlr = lr*decay_frac
for group in optimizer.param_groups:
group['lr'] = curlr
for batchidx, (data, target) in enumerate(dataloader):
correct = 0
nl = data.shape[0]
noise = torch.rand(nl, 3, 44, 44)
data = torch.add(data, 0.05 * noise)
if use_cuda:
data,target = data.cuda(), target.cuda()
data,target = Variable(data),Variable(target)
optimizer.zero_grad()
output = model(data)
loss = criterion(output, target)
loss.backward()
utils.clip_gradient(optimizer, 0.1)
optimizer.step()
pred = output.data.max(1, keepdim=True)[1] # get the index of the max log-probability
correct += pred.eq(target.data.view_as(pred)).cpu().sum()
if batchidx % 10 == 0:
print('Train Epoch: {} [{}/{} ({:.0f}%)]\tLoss: {:.6f}\tCorrec: {: d}'.format(
epoch, batchidx * len(data), len(dataloader.dataset),
100. * batchidx / len(dataloader), loss,correct))
lf.write('Train Epoch: {} [{}/{} ({:.0f}%)]\tLoss: {:.6f}\tCorrec: {: d}\n'.format(
epoch, batchidx * len(data), len(dataloader.dataset),
100. * batchidx / len(dataloader), loss,correct))
def train(train_loader, model_total, optimizer, epoch, dataset_name, video):
model_total.train()
for i, pack in enumerate(train_loader, start=0):
optimizer.zero_grad()
images, gts = pack
images = Variable(images)
gts = Variable(gts)
images = images.cuda()
gts = gts.cuda()
att_s, d = model_total(images)
loss1 = CE(att_s, gts)
loss2 = CE(d, gts)
loss = loss1 + loss2
loss.backward()
clip_gradient(optimizer, opt.clip)
optimizer.step()
print(
'{} Epoch [{:03d}/{:03d}], Step [{:04d}/{:04d}], Loss1: {:.4f} Loss2: {:0.4f} '
.format(datetime.now(), epoch, opt.epoch, i, len(train_loader),
loss1.data, loss2.data))
save_path = r'../%s/%s/' % (dataset_name, video)
if not os.path.exists(save_path):
os.makedirs(save_path)
torch.save(model_total.state_dict(), save_path + 'vgg_%d.pth' % epoch)
def train(train_loader, model, optimizer, epoch):
model.train()
for i, pack in enumerate(train_loader, start=1):
optimizer.zero_grad()
images, gts = pack
images = Variable(images)
gts = Variable(gts)
images = images.cuda()
gts = gts.cuda()
atts, dets = model(images)
loss1 = CE(atts, gts)
loss2 = CE(dets, gts)
loss = loss1 + loss2
loss.backward()
clip_gradient(optimizer, opt.clip)
optimizer.step()
if i % 400 == 0 or i == total_step:
print(
'{} Epoch [{:03d}/{:03d}], Step [{:04d}/{:04d}], Loss1: {:.4f} Loss2: {:0.4f}'
.format(datetime.now(), epoch, opt.epoch, i, total_step,
loss1.data, loss2.data))
if opt.is_ResNet:
save_path = 'models/CPD_Resnet/'
else:
save_path = 'models/CPD_VGG/'
if not os.path.exists(save_path):
os.makedirs(save_path)
if (epoch + 1) % 5 == 0:
torch.save(model.state_dict(),
save_path + opt.trainset + '_w.pth' + '.%d' % epoch)
def train(train_loader, model, optimizer, epoch, logger):
model.train() # train mode (dropout and batchnorm is used)
losses = AverageMeter()
# Batches
for i, (data) in enumerate(train_loader):
# Move to GPU, if available
padded_input, padded_target, input_lengths = data
padded_input = padded_input.to(device)
padded_target = padded_target.to(device)
input_lengths = input_lengths.to(device)
# Forward prop.
loss = model(padded_input, input_lengths, padded_target)
# Back prop.
optimizer.zero_grad()
loss.backward()
# Clip gradients
clip_gradient(optimizer, grad_clip)
# Update weights
optimizer.step()
# Keep track of metrics
losses.update(loss.item())
# Print status
if i % print_freq == 0:
logger.info('Epoch: [{0}][{1}/{2}]\t'
'Loss {loss.val:.4f} ({loss.avg:.4f})'.format(epoch, i, len(train_loader), loss=losses))
return losses.avg
def train(epoch):
# adjust_lr(optimizer, epoch, args.lr)
model.train()
for batch_idx, (prev_canvas, inst, next_obj, final_canvas, ref_obj, raw_data) in enumerate(train_loader):
# for ix in range(args.batch_size):
# # ix = random.randint(0, args.batch_size-1)
# inst_str = ' '.join(map(train_loader.dataset.ix_to_word.get, list(inst[ix])))
# next_obj_color = train_loader.dataset.num2color[next_obj[ix][0]]
# next_obj_shape = train_loader.dataset.num2shape[next_obj[ix][1]]
# print(inst_str)
# print("target obj: {} {} {} {}".format(next_obj_color, next_obj_shape, next_obj[ix][2], next_obj[ix][3]))
# if ref_obj[ix].sum() > 0:
# ref_obj_color = train_loader.dataset.num2color[ref_obj[ix][0]]
# ref_obj_shape = train_loader.dataset.num2shape[ref_obj[ix][1]]
# print("ref obj: {} {} {} {}".format(ref_obj_color, ref_obj_shape, ref_obj[ix][2], ref_obj[ix][3]))
# print("\n")
prev_canvas = Variable(prev_canvas.cuda())
inst = Variable(inst.cuda())
next_obj = Variable(next_obj.cuda())
ref_obj = Variable(ref_obj.cuda())
optimizer.zero_grad()
output = model(inst, prev_canvas, ref_obj, next_obj)
loss, rewards = loss_fn(output, next_obj, ref_obj)
policy_loss = (-model.saved_log_probs * Variable(rewards)).sum()
(loss + policy_loss).backward()
clip_gradient(optimizer, 0.1)
optimizer.step()
color_accuracy, shape_accuracy, row_accuracy, col_accuray = compute_accuracy(output, next_obj, ref_obj)
if batch_idx % args.log_interval == 0:
print('Train Epoch: {} [{}/{} ({:.0f}%)]\tLoss: {:.6f} ({:.3f} {:.3f} {} {})'.format(
epoch, batch_idx * args.batch_size, len(train_loader.dataset),
100. * batch_idx / len(train_loader), loss.data[0], color_accuracy, shape_accuracy, row_accuracy, col_accuray))
def train(epoch):
t = time.time()
model.train()
optimizer.zero_grad()
output = model(features, adj)
output = F.log_softmax(output, dim=1)
loss_train = F.nll_loss(output[idx_train], labels[idx_train])
acc_train = accuracy(output[idx_train], labels[idx_train])
loss_train.backward()
clip_gradient(model, clip_norm=0.5)
optimizer.step()
if not args.fastmode:
# Evaluate validation set performance separately,
# deactivates dropout during validation run.
model.eval()
output = model(features, adj)
output = F.log_softmax(output, dim=1)
loss_val = F.nll_loss(output[idx_val], labels[idx_val])
acc_val = accuracy(output[idx_val], labels[idx_val])
loss_test = F.nll_loss(output[idx_test], labels[idx_test])
acc_test = accuracy(output[idx_test], labels[idx_test])
print('Epoch: {:04d}'.format(epoch + 1), 'loss_train: {:.4f}'.format(
loss_train.item()), 'acc_train: {:.4f}'.format(acc_train.item()),
'loss_val: {:.4f}'.format(loss_val.item()),
'acc_val: {:.4f}'.format(acc_val.item()),
'loss_test: {:.4f}'.format(loss_test.item()),
'acc_test: {:.4f}'.format(acc_test.item()),
'time: {:.4f}s'.format(time.time() - t))
def train(train_loader, model, optimizer, epoch, save_path):
global step
model.train()
loss_all = 0
epoch_step = 0
# try:
for i, (images, gts, depths) in enumerate(train_loader, start=1):
optimizer.zero_grad()
images = images.cuda()
gts = gts.cuda()
depths = depths.cuda()
s1, s2 = model(images, depths)
loss1 = CE(s1, gts)
loss2 = CE(s2, gts)
loss = loss1 + loss2
loss.backward()
clip_gradient(optimizer, opt.clip)
optimizer.step()
step += 1
epoch_step += 1
loss_all += loss.data
if i % 100 == 0 or i == total_step or i == 1:
print(
'{} Epoch [{:03d}/{:03d}], Step [{:04d}/{:04d}], Loss1: {:.4f} Loss2: {:0.4f}'
.format(datetime.now(), epoch, opt.epoch, i, total_step,
loss1.data, loss2.data))
logging.info(
'#TRAIN#:Epoch [{:03d}/{:03d}], Step [{:04d}/{:04d}], Loss1: {:.4f} Loss2: {:0.4f}'
.format(epoch, opt.epoch, i, total_step, loss1.data,
loss2.data))
writer.add_scalar('Loss', loss.data, global_step=step)
grid_image = make_grid(images[0].clone().cpu().data,
1,
normalize=True)
writer.add_image('RGB', grid_image, step)
grid_image = make_grid(gts[0].clone().cpu().data,
1,
normalize=True)
writer.add_image('Ground_truth', grid_image, step)
res = s1[0].clone()
res = res.sigmoid().data.cpu().numpy().squeeze()
res = (res - res.min()) / (res.max() - res.min() + 1e-8)
writer.add_image('s1', torch.tensor(res), step, dataformats='HW')
res = s2[0].clone()
res = res.sigmoid().data.cpu().numpy().squeeze()
res = (res - res.min()) / (res.max() - res.min() + 1e-8)
writer.add_image('s2', torch.tensor(res), step, dataformats='HW')
loss_all /= epoch_step
logging.info('#TRAIN#:Epoch [{:03d}/{:03d}], Loss_AVG: {:.4f}'.format(
epoch, opt.epoch, loss_all))
writer.add_scalar('Loss-epoch', loss_all, global_step=epoch)
if (epoch) % 5 == 0:
torch.save(model.state_dict(),
save_path + 'BBSNet_epoch_{}.pth'.format(epoch))
def train(train_loader, model, metric_fc, criterion, optimizer, epoch):
model.train() # train mode (dropout and batchnorm is used)
metric_fc.train()
losses = AverageMeter()
top1_accs = AverageMeter()
# Batches
tic = time.time()
for i, (img, label) in enumerate(train_loader):
# Move to GPU, if available
img = img.to(device)
label = label.to(device) # [N, 1]
# Forward prop.
feature = model(img) # embedding => [N, 512]
output = metric_fc(feature, label) # class_id_out => [N, 10575]
# Calculate loss
loss = criterion(output, label)
# Back prop.
optimizer.zero_grad()
loss.backward()
# Clip gradients
clip_gradient(optimizer, grad_clip)
# Update weights
optimizer.step()
# Keep track of metrics
losses.update(loss.item())
top1_accuracy = accuracy(output, label, 1)
top1_accs.update(top1_accuracy)
# Print status
if i % print_freq == 0:
toc = time.time()
time_elapsed = toc - tic
logger.info(
'Epoch: [{0}][{1}/{2}]\t'
'Loss {loss.val:.4f} ({loss.avg:.4f})\t'
'Top1 Accuracy {top1_accs.val:.3f} ({top1_accs.avg:.3f})\t'
'Time Elapsed: {time_elapsed:.3f}s'.format(
epoch,
i,
len(train_loader),
loss=losses,
top1_accs=top1_accs,
time_elapsed=time_elapsed))
tic = time.time()
return losses.avg, top1_accs.avg
def train(args, encoder, decoder, loader, decoder_optimizer, encoder_optimizer,
device, criterion):
decoder.train() # train mode (dropout and batchnorm is used)
encoder.train()
losses = AverageMeter() # loss (per word decoded)
top3accs = AverageMeter() # top accuracy
i = 0
for data in tqdm(loader):
if i % args.lr_update_freq == 0 and i > 0:
adjust_learning_rate(decoder_optimizer, args.decay_rate)
if args.fine_tune_encoder:
adjust_learning_rate(encoder_optimizer, args.decay_rate)
imgs = data[0]
caps = data[1]
caplens = data[2]
# Forward pass
imgs = encoder(imgs.to(device)).to(device)
caps = caps.to(imgs.device)
caplens = caplens.to(imgs.device)
scores, caps_sorted, decode_lengths, alphas, sort_ind = decoder(
imgs, caps, caplens)
targets = caps_sorted[:, 1:] #remove <start> and <end> tokens
scores = pack_padded_sequence(scores,
decode_lengths, batch_first=True).to(
device) #remove padding tokens
targets = pack_padded_sequence(targets,
decode_lengths,
batch_first=True).to(device)
# Calculate loss
loss = criterion(scores.data, targets.data).to(imgs.device)
# Add doubly stochastic attention regularization
loss += args.alphac * ((1. - alphas.sum(dim=1).to(device))**2).mean()
# Back prop.
decoder_optimizer.zero_grad()
if encoder_optimizer is not None:
encoder_optimizer.zero_grad()
loss.backward()
if args.gradient_clip is not None:
clip_gradient(decoder_optimizer, args.gradient_clip)
if encoder_optimizer is not None:
clip_gradient(encoder_optimizer, args.gradient_clip)
# Update weights
decoder_optimizer.step()
if encoder_optimizer is not None:
encoder_optimizer.step()
# Keep track of metrics
top3 = accuracy(scores.data, targets.data, 3)
losses.update(loss.item(), sum(decode_lengths))
top3accs.update(top3, sum(decode_lengths))
# Print status
if i % args.print_freq == 0:
print('Loss {loss.val:.4f} ({loss.avg:.4f})\t'
'Top-3 Accuracy {top3.val:.3f} ({top3.avg:.3f})'.format(
loss=losses, top3=top3accs))
if i % args.checkpoint_freq == 0 and args.checkpoint_freq > 0:
save_checkpoint(args.model_path, i, encoder, decoder,
encoder_optimizer, decoder_optimizer, 0, False)
i += 1
def train(train_loader, model, optimizer, epoch, logger):
model.train() # train mode (dropout and batchnorm is used)
losses = AverageMeter()
scaler = GradScaler()
# loss_function = alpha_prediction_loss
criterion = LossFunction(args.stage)()
# Batches
for i, (img, alpha_label, trimap_label, _) in enumerate(train_loader):
# Move to GPU, if available
img = img.type(torch.FloatTensor).to(device) # [N, 4, 320, 320]
alpha_label = alpha_label.type(torch.FloatTensor).to(
device) # [N, 320, 320]
alpha_label = alpha_label.unsqueeze(1)
trimap_label = trimap_label.to(device)
# alpha_label = alpha_label.reshape((-1, 2, im_size * im_size)) # [N, 320*320]
with autocast():
# Forward prop.
trimap_out, alpha_out = model(img) # [N, 3, 320, 320]
# alpha_out = alpha_out.reshape((-1, 1, im_size * im_size)) # [N, 320*320]
# Calculate loss
if args.stage == 'train_trimap':
loss = criterion(trimap_out, trimap_label)
elif args.stage == 'train_alpha':
loss = criterion(alpha_out, alpha_label, trimap_out,
trimap_label)
# Back prop.
optimizer.zero_grad()
scaler.scale(loss).backward()
# loss.backward()
# Clip gradients
scaler.unscale_(optimizer)
clip_gradient(optimizer, grad_clip)
# Update weights
scaler.step(optimizer)
scaler.update()
# optimizer.step()
# Keep track of metrics
losses.update(loss.item())
# Print status
if i % print_freq == 0:
status = 'Epoch: [{0}][{1}/{2}]\t' \
'Loss {loss.val:.4f} ({loss.avg:.4f})\t'.format(
epoch, i, len(train_loader), loss=losses)
logger.info(status)
writer.add_scalar('Train_Loss', losses.avg, epoch)
writer.add_scalar('Learning_Rate', get_learning_rate(optimizer), epoch)
# save_checkpoint(epoch, 0, model, optimizer, losses.avg, False, args.checkpoint_dir)
return losses.avg
def train(train_loader, model, optimizer, epoch):
model.train()
for i, pack in enumerate(train_loader, start=1):
optimizer.zero_grad()
images, gts, masks, grays, edges = pack
images = Variable(images)
gts = Variable(gts)
masks = Variable(masks)
grays = Variable(grays)
edges = Variable(edges)
images = images.cuda()
gts = gts.cuda()
masks = masks.cuda()
grays = grays.cuda()
edges = edges.cuda()
img_size = images.size(2) * images.size(3) * images.size(0)
ratio = img_size / torch.sum(masks)
sal1, edge_map, sal2 = model(images)
sal1_prob = torch.sigmoid(sal1)
sal1_prob = sal1_prob * masks
sal2_prob = torch.sigmoid(sal2)
sal2_prob = sal2_prob * masks
smoothLoss_cur1 = opt.sm_loss_weight * smooth_loss(
torch.sigmoid(sal1), grays)
sal_loss1 = ratio * CE(sal1_prob, gts * masks) + smoothLoss_cur1
smoothLoss_cur2 = opt.sm_loss_weight * smooth_loss(
torch.sigmoid(sal2), grays)
sal_loss2 = ratio * CE(sal2_prob, gts * masks) + smoothLoss_cur2
edge_loss = opt.edge_loss_weight * CE(torch.sigmoid(edge_map), edges)
bce = sal_loss1 + edge_loss + sal_loss2
visualize_prediction1(torch.sigmoid(sal1))
visualize_edge(torch.sigmoid(edge_map))
visualize_prediction2(torch.sigmoid(sal2))
loss = bce
loss.backward()
clip_gradient(optimizer, opt.clip)
optimizer.step()
if i % 10 == 0 or i == total_step:
print(
'{} Epoch [{:03d}/{:03d}], Step [{:04d}/{:04d}], sal1_loss: {:0.4f}, edge_loss: {:0.4f}, sal2_loss: {:0.4f}'
.format(datetime.now(), epoch, opt.epoch, i, total_step,
sal_loss1.data, edge_loss.data, sal_loss2.data))
save_path = 'models/'
if not os.path.exists(save_path):
os.makedirs(save_path)
if epoch % 10 == 0:
torch.save(model.state_dict(),
save_path + 'scribble' + '_%d' % epoch + '.pth')
def train_emotion(encoder, decoder, optimizer, criterion, data_loaders, tags,
log_step, grad_clip):
decoder.train()
encoder.train()
batch_time = AverageMeter()
losses = [AverageMeter() for _ in range(len(tags))]
start = time.time()
for j in random.sample([i for i in range(len(tags))], len(tags)):
for i, (images, captions, lengths,
all_captions) in enumerate(data_loaders[j]):
# Set mini-batch dataset
images = images.to(device)
captions = captions.to(device)
lengths = [l - 1 for l in lengths]
targets = pack_padded_sequence(input=captions[:, 1:],
lengths=lengths,
batch_first=True)[0]
# Forward, backward and optimize
features = encoder(images)
outputs, alphas = decoder(captions[:, :-1],
lengths,
features,
mode=tags[j])
loss = criterion(outputs, targets)
alpha_c = 1.
loss += alpha_c * ((1. - alphas.sum(dim=1))**2).mean()
decoder.zero_grad()
# encoder.zero_grad()
loss.backward()
# Clip gradients
clip_gradient(optimizer, grad_clip)
optimizer.step()
# optimizer[j].step()
if i % log_step == 0:
print("""Step [{}/{}], [{}], Loss: {:.4f}""".format(
i, len(data_loaders[j]), tags[j][:3].upper(), loss.item()))
# Keep track of metrics
losses[j].update(loss.item(), sum(lengths))
batch_time.update(time.time() - start)
# free
del images
del captions
del lengths
del all_captions
del targets
del outputs
del alphas
torch.cuda.empty_cache()
return batch_time.val, [loss.avg for loss in losses]
def train(train_loader, model_RGB, model_depth, optimizer, epoch):
model_RGB.train()
for i, pack in enumerate(train_loader, start=1):
optimizer.zero_grad()
images, depth, gts = pack
images = Variable(images)
depth = Variable(depth)
gts = Variable(gts)
images = images.cuda()
depth = depth.cuda()
gts = gts.cuda()
n, c, h, w = images.size()
depth = depth.view(n, h, w, 1).repeat(1, 1, 1, 3)
depth = depth.transpose(3, 1)
depth = depth.transpose(3, 2)
dets_depth = model_depth(depth)
dets, att_3, att_4, att_5 = model_RGB(images)
loss_depth = cross_entropy2d(dets_depth.detach(), gts, temperature=20)
loss_gt = cross_entropy2d(dets, gts, temperature=1)
LIPU_loss = KD_KLDivLoss(dets, dets_depth.detach(), temperature=20)
alpha = math.exp(-70 * loss_depth)
loss_adptative = (1 - alpha) * loss_gt + alpha * LIPU_loss
Dilation_depth = F.softmax(dets_depth, dim=1)
Dilation_depth = Dilation(Dilation_depth[:, 1, :, :].view(n, 1, h, w))
loss_attention = CE(att_3, Dilation_depth.detach()) + \
CE(att_4, Dilation_depth.detach()) + \
CE(att_5, Dilation_depth.detach())
loss = loss_adptative + loss_attention
loss.backward()
optimizer.step()
clip_gradient(optimizer, opt.clip)
if i % 10 == 0 or i == total_step:
print(
'{} Epoch [{:03d}/{:03d}], Step [{:04d}/{:04d}], Loss: {:.4f}, Loss_gt: {:.4f}, Loss_att: {:.4f}, Loss_LIPU: {:.4f}, alpha: {:.4f}'
.format(datetime.now(), epoch, opt.epoch, i, total_step,
loss.data, loss_gt.data, loss_attention.data,
LIPU_loss.data, alpha))
save_path = 'models/RGB_with_A2dele/'
if not os.path.exists(save_path):
os.makedirs(save_path)
if (epoch + 1) % 1 == 0:
torch.save(model_RGB.state_dict(), save_path + '%d' % epoch + '_w.pth')
def train(train_loader, model, optimizer, epoch, save_path):
global step
model.train()
loss_all = 0
epoch_step = 0
try:
for i, (images, gts, depths) in enumerate(train_loader, start=1):
optimizer.zero_grad()
images = images.cuda()
gts = gts.cuda()
depths = depths.cuda()
pred, pL, pR = model(images, depths)
loss1, loss2, loss3 = hybrid_e_loss(pred, gts), hybrid_e_loss(
pL, gts), hybrid_e_loss(pR, gts)
loss = 0.333 * (loss1 + loss2 + loss3)
loss.backward()
clip_gradient(optimizer, opt.clip)
optimizer.step()
step += 1
epoch_step += 1
loss_all += loss.data
if i % 100 == 0 or i == total_step or i == 1:
print(
'{} Epoch [{:03d}/{:03d}], Step [{:04d}/{:04d}], Loss: {:.4f}'
.format(datetime.now(), epoch, opt.epoch, i, total_step,
loss.data))
logging.info(
'#TRAIN#:Epoch [{:03d}/{:03d}], Step [{:04d}/{:04d}], Loss: {:.4f}'
.format(epoch, opt.epoch, i, total_step, loss.data))
#writer.add_scalar('Loss', loss.data, global_step=step)
#grid_image = make_grid(images[0].clone().cpu().data, 1, normalize=True)
#writer.add_image('RGB', grid_image, step)
#grid_image = make_grid(gts[0].clone().cpu().data, 1, normalize=True)
#writer.add_image('Ground_truth', grid_image, step)
#res = pred[0].clone()
#res = res.sigmoid().data.cpu().numpy().squeeze()
#res = (res - res.min()) / (res.max() - res.min() + 1e-8)
#writer.add_image('pred', torch.tensor(res), step,dataformats='HW')
loss_all /= epoch_step
logging.info('#TRAIN#:Epoch [{:03d}/{:03d}], Loss_AVG: {:.4f}'.format(
epoch, opt.epoch, loss_all))
writer.add_scalar('Loss-epoch', loss_all, global_step=epoch)
if (epoch) % 5 == 0:
torch.save(model.state_dict(),
save_path + 'CMANet_epoch_{}.pth'.format(epoch))
except KeyboardInterrupt:
print('Keyboard Interrupt: save model and exit.')
if not os.path.exists(save_path):
os.makedirs(save_path)
torch.save(model.state_dict(),
save_path + 'CMANet_epoch_{}.pth'.format(epoch + 1))
print('save checkpoints successfully!')
raise
def train_with_painter(painter_model, epoch):
model.train()
painter_model.eval()
epoch_rewards = []
for batch_idx, data in enumerate(train_loader):
raw_data = data[-1]
data = [Variable(_, requires_grad=False).cuda() for _ in data[:-1]]
prev_canvas, inst, next_obj, final_canvas, ref_obj = data
fc_att1_optimizer.zero_grad()
samples = model.sample(prev_canvas, final_canvas,
(next_obj, ref_obj, None))
# [a, b, c, 0, d, 0] -> [a, b, c, 0, 0, 0]
masks = (samples == 0)
for i in range(samples.size(0)):
if masks[i].sum() > 0:
index = torch.nonzero(masks[i])[0, 0]
samples[i, index:] = 0
samples_input = torch.zeros(inst.size()).long()
# [a, b, ...] -> [0, a, b, ...]
samples_input[:, 1:samples.size(1) + 1] = samples
target_obj_prediction = get_painter_model_prediction(
painter_model,
[Variable(samples_input.cuda()), prev_canvas, ref_obj, next_obj])
# print((torch.eq(target_obj_predict, next_obj.data).sum(dim=1) == 4).long().sum())
painter_rewards = get_painter_rewards(target_obj_prediction,
final_canvas.data.long())
# samples2 = decode_sequence(train_loader.dataset.ix_to_word, samples)
# diff_canvas = compute_diff_canvas(prev_canvas, final_canvas)
# diff_canvas_objs = [train_loader.dataset.decode_canvas(diff_canvas.data[i]) for i in range(diff_canvas.size(0))]
# for i in range(prev_canvas.size(0)):
# raw_data[i]['predicted_instruction'] = samples2[i]
# for i, d in enumerate(raw_data):
# d['prev_canvas'] = render_canvas(d['prev_canvas']).replace(' ', '')
# d['final_canvas'] = render_canvas(d['final_canvas']).replace(' ', '')
# d['diff_canvas'] = render_canvas(diff_canvas_objs[i]).replace(' ', '')
# r = requests.post("http://vision.cs.virginia.edu:5001/new_task", json=raw_data)
# print('request sent')
policy_loss = (-model.saved_log_probs *
Variable(painter_rewards.cuda())).sum()
policy_loss.backward()
clip_gradient(fc_att1_optimizer, 0.1)
fc_att1_optimizer.step()
model.saved_log_probs = None
model.sampled_actions = None
model.rewards = None
if batch_idx % args.log_interval == 0:
print('Train Epoch: {} [{}/{} ({:.0f}%)]\tRewards: {:.6f})'.format(
epoch, batch_idx * args.batch_size, len(train_loader.dataset),
100. * batch_idx / len(train_loader), painter_rewards.mean()))
epoch_rewards.append(painter_rewards.mean())
print("epoch reward {}".format(np.array(epoch_rewards).mean()))
torch.save(model.state_dict(),
'instructor_trained_with_painter/model_{}.pth'.format(epoch))
def train(epoch):
print('\nEpoch: %d' % epoch)
global Train_acc
net.train()
train_loss = 0
correct = 0
total = 0
if epoch > learning_rate_decay_start and learning_rate_decay_start >= 0:
frac = (epoch - learning_rate_decay_start) // learning_rate_decay_every
decay_factor = learning_rate_decay_rate ** frac
current_lr = opt.lr * decay_factor
utils.set_lr(optimizer, current_lr) # set the decayed rate
else:
current_lr = opt.lr
print('learning_rate: %s' % str(current_lr))
for batch_idx, (inputs, targets) in enumerate(trainloader):
if use_cuda:
inputs, targets = inputs.cuda(), targets.cuda()
optimizer.zero_grad()
if opt.mixup:
inputs, targets_a, targets_b, lam = utils.mixup_data(inputs, targets, 0.6, True)
inputs, targets_a, targets_b = map(Variable, (inputs, targets_a, targets_b))
else:
inputs, targets = Variable(inputs), Variable(targets)
outputs = net(inputs)
if opt.mixup:
loss = utils.mixup_criterion(criterion, outputs, targets_a, targets_b, lam)
else:
loss = criterion(outputs, targets)
loss.backward()
utils.clip_gradient(optimizer, 0.1)
optimizer.step()
train_loss += loss.item()
_, predicted = torch.max(outputs.data, 1)
total += targets.size(0)
if opt.mixup:
correct += (lam * predicted.eq(targets_a.data).cpu().sum().float()
+ (1 - lam) * predicted.eq(targets_b.data).cpu().sum().float())
else:
correct += predicted.eq(targets.data).cpu().sum()
utils.progress_bar(batch_idx, len(trainloader), 'Loss: %.3f | Acc: %.3f%% (%d/%d)'
% (train_loss/(batch_idx+1), 100.*float(correct)/float(total), correct, total))
Train_acc = 100.*float(correct)/float(total)
return train_loss/(batch_idx+1), Train_acc
def train(train_loader, model, optimizer, epoch, logger, writer):
model.train() # train mode (dropout and batchnorm is used)
losses = AverageMeter()
times = AverageMeter()
start = time.time()
# Batches
for i, (data) in enumerate(train_loader):
# Move to GPU, if available
padded_input, padded_target, input_lengths = data
padded_input = padded_input.to(Config.device)
padded_target = padded_target.to(Config.device)
input_lengths = input_lengths.to(Config.device)
# Forward prop.
pred, gold = model(padded_input, input_lengths, padded_target)
loss, n_correct = cal_performance(pred, gold, smoothing=args.label_smoothing)
try:
assert (not math.isnan(loss.item()))
except AssertionError:
print('n_correct: ' + str(n_correct))
print('data: ' + str(n_correct))
continue
# Back prop.
optimizer.zero_grad()
loss.backward()
# Clip gradients
clip_gradient(optimizer.optimizer, Config.grad_clip)
# Update weights
optimizer.step()
# Keep track of metrics
elapsed = time.time() - start
start = time.time()
losses.update(loss.item())
times.update(elapsed)
# Print status
if i % Config.print_freq == 0:
logger.info('Epoch: [{0}][{1}/{2}]\t'
'Batch time {time.val:.5f} ({time.avg:.5f})\t'
'Loss {loss.val:.5f} ({loss.avg:.5f})'.format(epoch, i, len(train_loader), time=times,
loss=losses))
writer.add_scalar('step_num/train_loss', losses.avg, optimizer.step_num)
writer.add_scalar('step_num/learning_rate', optimizer.lr, optimizer.step_num)
return losses.avg
def train(train_loader, model, metric_fc, criterion, optimizer, epoch, logger,
scheduler):
model.train() # train mode (dropout and batchnorm is used)
metric_fc.train()
losses = AverageMeter()
top1_accs = AverageMeter()
# Batches
for i, (img, label) in enumerate(train_loader):
# Move to GPU, if available
img = img.to(device)
label = label.to(device) # [N, 1]
# Forward prop.
feature = model(img) # embedding => [N, 512]
output = metric_fc(feature, label) # class_id_out => [N, 10575]
# output = metric_fc(feature)
# Calculate loss
loss = criterion(output, label)
# Back prop.
optimizer.zero_grad()
loss.backward()
# Clip gradients
clip_gradient(optimizer, grad_clip)
# Update weights
optimizer.step()
# Keep track of metrics
losses.update(loss.item())
top1_accuracy = accuracy(output, label, 1) # output
top1_accs.update(top1_accuracy)
# Update scheduler for learning rate decay for OneCircle Learning Rate
scheduler.step()
# Print status
if i % print_freq == 0:
logger.info(
'Epoch: [{0}][{1}/{2}]\t'
'Loss {loss.val:.4f} ({loss.avg:.4f})\t'
'Top1 Accuracy {top5_accs.val:.3f} ({top5_accs.avg:.3f})\t'
'Learning rate: {learning_rate:.5f}'.format(
epoch,
i,
len(train_loader),
loss=losses,
top5_accs=top1_accs,
learning_rate=optimizer.param_groups[0]['lr']))
return losses.avg, top1_accs.avg
def train_epoch(model, train_iter, epoch, loss_fn, optimizer, log_dict):
total_epoch_loss = 0
total_epoch_acc = 0
model.cuda()
steps = 0
model.train()
start_train_time = time.time()
for idx, batch in enumerate(train_iter):
text, attn, target = select_input(batch, log_dict.param)
if (
len(target) is not log_dict.param.batch_size
): # Last batch may have length different than log_dict.param.batch_size
continue
if torch.cuda.is_available():
text = [
text[0].cuda(), text[1].cuda(), text[2].cuda(), text[3].cuda()
]
attn = attn.cuda()
target = target.cuda()
## model prediction
model.zero_grad()
optimizer.zero_grad()
# print("Prediction")
prediction = model(text, attn)
# print("computing loss")
loss = loss_fn(prediction, target)
# print("Loss backward")
startloss = time.time()
loss.backward()
# print(time.time()-startloss,"Finish loss")
clip_gradient(model, 1e-1)
# torch.nn.utils.clip_grad_norm_(model.parameters(),1)
optimizer.step()
# print("=====================")
steps += 1
if steps % 100 == 0:
print(
f'Epoch: {epoch+1:02}, Idx: {idx+1}, Training Loss: {loss.item():.4f}, Time taken: {((time.time()-start_train_time)/60): .2f} min'
)
start_train_time = time.time()
total_epoch_loss += loss.item()
# break
return total_epoch_loss / len(train_iter)
def train(epoch):
print('\nEpoch: %d' % epoch)
global Train_acc
net.train()
train_loss = 0
correct = 0
total = 0
if epoch > learning_rate_decay_start and learning_rate_decay_start >= 0:
frac = (epoch - learning_rate_decay_start) // learning_rate_decay_every
decay_factor = learning_rate_decay_rate ** frac
current_lr = opt.lr * decay_factor
utils.set_lr(optimizer, current_lr) # set the decayed rate
else:
current_lr = opt.lr
print('learning_rate: %s' % str(current_lr))
for batch_idx, (inputs, targets) in enumerate(trainloader):
bs, c, h, w = np.shape(inputs)
inputs = torch.Tensor(inputs)
if use_cuda:
inputs, targets = inputs.cuda(), targets.cuda()
optimizer.zero_grad()
inputs, targets = Variable(inputs), Variable(targets)
conTensor1 = net1.features(inputs).view(bs, -1)
conTensor2 = layers(inputs, net2).view(bs, -1)
if use_cuda:
conTensor1, conTensor2 = conTensor1.cuda(), conTensor2.cuda()
resTensor = torch.cat((conTensor1, conTensor2), 1)
#print(resTensor.shape)
resTensor = Variable(resTensor)
outputs = netClassifier(resTensor)
#outputs_avg = outputs.view(bs, ncrops, -1).mean(1)
#print(outputs.shape,"train output")
loss = criterion(outputs, targets)
loss.backward()
utils.clip_gradient(optimizer, 0.1)
optimizer.step()
train_loss += loss.data.item()
_, predicted = torch.max(outputs.data, 1)
total += targets.size(0)
correct += predicted.eq(targets.data).cpu().sum()
'''
utils.progress_bar(batch_idx, len(trainloader), 'Loss: %.3f | Acc: %.3f%% (%d/%d)'
% (train_loss/(batch_idx+1), 100.*correct/total, correct, total))
'''
Train_acc = float(100. * correct) / float(total)
#if ((epoch + 1) % 10 == 0):
Ta = float(Train_acc)
temp_train_acc.append(Ta)
temp_train_loss.append(train_loss)
def train(epoch):
print('\nEpoch: %d' % epoch)
print("Start Training!")
global Train_acc
net.train()
train_loss = 0
correct = 0
total = 0
# 学习率下降
if epoch > learning_rate_decay_start and learning_rate_decay_start >= 0:
frac = (epoch - learning_rate_decay_start) // learning_rate_decay_every
decay_factor = learning_rate_decay_rate**frac
current_lr = opt.lr * decay_factor
utils.set_lr(optimizer, current_lr) # set the decayed rate
else:
current_lr = opt.lr
print('learning_rate: %s' % str(current_lr))
# 迭代，迭代的次数 = 28708(训练集大小)/batch_size = batch数，计算loss和accuracy
# batch_idx计迭代数
iter_num = 0
for batch_idx, (inputs, targets) in enumerate(trainloader):
if use_cuda:
inputs, targets = inputs.cuda(), targets.cuda()
optimizer.zero_grad()
inputs, targets = Variable(inputs), Variable(targets)
outputs = net(inputs) # 正向传播
loss = criterion(outputs, targets)
loss.backward() # 反向传播
utils.clip_gradient(optimizer, 0.1)
optimizer.step()
# train_loss += loss.data[0]
train_loss += loss.item()
_, predicted = torch.max(outputs.data, 1)
total += targets.size(0) # 每次加上batch_size个数
correct += predicted.eq(targets.data).cpu().sum()
Train_acc = int(correct) / int(
total) # 也就是最后一次迭代的准确率，代表一个epoch的准确率（完整的数据集通过了神经网络）
# 输出loss和训练集准确率
# utils.progress_bar(batch_idx, len(trainloader), 'Loss: %.3f | Acc: %.3f%% (%d/%d)'
# % (train_loss/(batch_idx+1), 100.*correct/total, correct, total))
iter_num += 1
train_loss = train_loss / iter_num
train_loss_list.append(train_loss)
train_acc_list.append(Train_acc)
print("Train Accuracy:", Train_acc * 100, "%")
print("Train Loss:", train_loss)
def train(train_loader, model, criterion, optimizer, epoch, logger):
model.train() # train mode (dropout and batchnorm is used)
losses = utils.AverageMeter()
accs = utils.AverageMeter()
# Batches
for i, (images, labels) in enumerate(train_loader):
# Move to GPU, if available
images = images.to(device)
batch_size = images.size(0)
target_lengths = [min(max_target_len, len(t)) for t in labels]
target_lengths = torch.LongTensor(target_lengths) # size (batch size)
targets = [utils.encode_target(t[:max_target_len]) for t in labels]
targets = torch.LongTensor(targets).to(
device) # size (batch size, max target length)
# Forward prop.
inputs = model(
images) # size (input length, batch size, number of classes)
input_lengths = Variable(torch.IntTensor(
[inputs.size(0)] * batch_size)) # size (batch size)
# Calculate loss
loss = criterion(inputs, targets, input_lengths, target_lengths)
acc = utils.accuracy(inputs, input_lengths, labels, batch_size)
# Back prop.
optimizer.zero_grad()
loss.backward()
# Clip gradients
utils.clip_gradient(optimizer, grad_clip)
# Update weights
optimizer.step()
# Keep track of metrics
if loss.item() != float('inf'):
losses.update(loss.item(), batch_size)
accs.update(acc, batch_size)
# Print status
if i % print_freq == 0:
logger.info('Epoch: [{0}][{1}/{2}]\t'
'Loss {loss.val:.4f} ({loss.avg:.4f})\t'
'Accuracy {acc.val:.4f} ({acc.avg:.4f})'.format(
epoch, i, len(train_loader), loss=losses,
acc=accs))
return losses.avg, accs.avg
def train(train_loader, model, criterion, optimizer, epoch, logger):
model.train() # train mode (dropout and batchnorm is used)
losses = AverageMeter()
l_losses = AverageMeter()
p_losses = AverageMeter()
# Batches
for i, (img, lbl_look_vec, lbl_pupil_size) in enumerate(train_loader):
# Move to GPU, if available
img = img.to(device)
lbl_look_vec = lbl_look_vec.float().to(device) # [N, 3]
lbl_pupil_size = lbl_pupil_size.float().to(device) # [N, 1]
# Forward prop.
out_look_vec, out_pupil_size = model(img) # embedding => [N, 3]
# Calculate loss
loss1 = criterion(out_look_vec, lbl_look_vec)
loss2 = criterion(out_pupil_size, lbl_pupil_size)
loss2 = loss2 # / 20
loss = loss1 + loss2
# Back prop.
optimizer.zero_grad()
loss.backward()
# Clip gradients
clip_gradient(optimizer, grad_clip)
# Update weights
optimizer.step()
# Keep track of metrics
losses.update(loss.item() * 1000, img.size(0))
l_losses.update(loss1.item() * 1000, img.size(0))
p_losses.update(loss2.item() * 1000, img.size(0))
# Print status
if i % print_freq == 0:
logger.info(
'Epoch: [{0}][{1}/{2}]\t'
'Loss {loss.val:.5f} ({loss.avg:.5f})\t'
'Look Vec Loss {l_loss.val:.5f} ({l_loss.avg:.5f})\t'
'Pupil Size Loss {p_loss.val:.5f} ({p_loss.avg:.5f})'.format(
epoch,
i,
len(train_loader),
loss=losses,
l_loss=l_losses,
p_loss=p_losses))
return l_losses.avg + p_losses.avg
def train(epoch):
print('\nEpoch: %d' % epoch)
global Train_acc
global lr1
net.train()
train_loss = 0
f_loss = 0.0
correct = 0
total = 0
current_lr1 = 0.0
if epoch > learning_rate_decay_start and learning_rate_decay_start >= 0:
frac = (epoch - learning_rate_decay_start) // learning_rate_decay_every
decay_factor = learning_rate_decay_rate**frac
decay_factor1 = 0.95**frac
current_lr = opt.lr * decay_factor
current_lr1 = lr1 * decay_factor1
utils.set_lr(optimizer, current_lr) # set the decayed rate
utils.set_lr(optimzer4center, current_lr1)
else:
current_lr = opt.lr
current_lr1 = lr1
print('learning_rate: %s' % str(current_lr))
print('learning_rate1: %s' % str(current_lr1))
for batch_idx, (inputs, targets) in enumerate(trainloader):
if use_cuda:
inputs, targets = inputs.cuda(), targets.cuda()
optimizer.zero_grad()
optimzer4center.zero_grad()
inputs, targets = Variable(inputs), Variable(targets)
ip1, outputs = net(inputs)
loss = nllloss(outputs,
targets) + loss_weight * centerloss(targets, ip1)
loss.backward()
utils.clip_gradient(optimizer, 0.1)
optimizer.step()
optimzer4center.step()
train_loss += loss.item()
_, predicted = torch.max(outputs.data, 1)
total += targets.size(0)
correct += predicted.eq(targets.data).cpu().sum()
f_loss = float(train_loss) / float(batch_idx + 1)
utils.progress_bar(
batch_idx, len(trainloader), 'Loss: %.3f | Acc: %.3f%% (%d/%d)' %
(train_loss / (batch_idx + 1),
100.0 * float(correct) / float(total), correct, total))
Train_acc = 100.0 * float(correct) / float(total)
training_loss.append(f_loss)
training_acc.append(Train_acc)
def train(epoch):
print('\nEpoch: %d' % epoch)
global Train_acc
net.train()
train_loss = 0
correct = 0
total = 0
conf_mat = np.zeros((NUM_CLASSES, NUM_CLASSES))
if epoch > learning_rate_decay_start and learning_rate_decay_start >= 0:
frac = (epoch - learning_rate_decay_start) // learning_rate_decay_every
decay_factor = learning_rate_decay_rate**frac
current_lr = opt.lr * decay_factor
utils.set_lr(optimizer, current_lr) # set the decayed rate
else:
current_lr = opt.lr
print('learning_rate: %s' % str(current_lr))
for batch_idx, (inputs, targets) in enumerate(trainloader):
if use_cuda:
inputs, targets = inputs.cuda(), targets.cuda()
optimizer.zero_grad()
inputs, targets = Variable(inputs), Variable(targets)
outputs = net(inputs)
loss = criterion(outputs, targets)
loss.backward()
utils.clip_gradient(optimizer, 0.1)
optimizer.step()
train_loss += loss.item()
conf_mat += utils.confusion_matrix(outputs, targets, NUM_CLASSES)
acc = sum([conf_mat[i, i]
for i in range(conf_mat.shape[0])]) / conf_mat.sum()
uacc_per_class = [
conf_mat[i, i] / conf_mat[i].sum()
for i in range(conf_mat.shape[0])
]
unweighted_acc = sum(uacc_per_class) / len(uacc_per_class)
prec_per_class = [
conf_mat[i, i] / conf_mat[:, i].sum()
for i in range(conf_mat.shape[0])
]
average_precision = sum(prec_per_class) / len(prec_per_class)
utils.progress_bar(
batch_idx, len(trainloader),
'Loss: %.3f | Acc: %.3f%% | unweighted_Acc: %.3f%%' %
(train_loss / (batch_idx + 1), 100. * acc, 100. * unweighted_acc))
Train_acc = 100. * acc
def train(epoch):
print('\nEpoch: %d' % epoch)
global Train_acc
net.train()
train_loss = 0
correct = 0
total = 0
if epoch > learning_rate_decay_start and learning_rate_decay_start >= 0:
frac = (epoch - learning_rate_decay_start) // learning_rate_decay_every
decay_factor = learning_rate_decay_rate**frac
current_lr = opt.lr * decay_factor
utils.set_lr(optimizer, current_lr) # set the decayed rate
else:
current_lr = opt.lr
print('learning_rate: %s' % str(current_lr))
for batch_idx, (inputs, targets) in enumerate(trainloader):
# *********************process the weights including binarization*********************
#print("!!!bin!!!\r\n")
bin_op.binarization()
if use_cuda:
inputs, targets = inputs.cuda(), targets.cuda()
optimizer.zero_grad()
inputs, targets = Variable(inputs), Variable(targets)
#***********************************************
outputs = net(inputs)
loss = criterion(outputs, targets)
loss.backward()
#utils.clip_gradient(optimizer, 0.1)
# ****************restore weights*****************
bin_op.restore()
bin_op.updateBinaryGradWeight()
if opt.sr:
updateBN()
utils.clip_gradient(optimizer, 0.1)
optimizer.step()
train_loss += loss.item()
_, predicted = torch.max(outputs.data, 1)
total += targets.size(0)
correct += predicted.eq(targets.data).cpu().sum()
utils.progress_bar(
batch_idx, len(trainloader), 'Loss: %.3f | Acc: %.3f%% (%d/%d)' %
(train_loss /
(batch_idx + 1), 100. * float(correct) / total, correct, total))
Train_acc = 100. * float(correct) / total
def train_epoch(model, train_iter, epoch,loss_fn,optimizer,log_dict):
total_epoch_loss = 0
total_epoch_acc = 0
model.cuda()
steps = 0
model.train()
start_train_time = time.time()
for idx, batch in enumerate(train_iter):
text, attn, target = select_input(batch,log_dict.param)
target = torch.autograd.Variable(target).long()
if (target.size()[0] is not log_dict.param.batch_size):# Last batch may have length different than log_dict.param.batch_size
continue
if torch.cuda.is_available():
text = [text[0].cuda(),text[1].cuda(),text[2].cuda(),text[3].cuda()]
attn = attn.cuda()
target = target.cuda()
## model prediction
model.zero_grad()
optimizer.zero_grad()
# print("Prediction")
prediction = model(text,attn)
# print("computing loss")
loss = loss_fn(prediction, target)
## evaluation
num_corrects = (torch.max(prediction, 1)[1].view(target.size()).data == target.data).float().sum()
acc = 100.0 * num_corrects/log_dict.param.batch_size
# print("Loss backward")
startloss = time.time()
loss.backward()
# print(time.time()-startloss,"Finish loss")
clip_gradient(model, 1e-1)
# torch.nn.utils.clip_grad_norm_(model.parameters(),1)
optimizer.step()
# print("=====================")
steps += 1
if steps % 100 == 0:
print (f'Epoch: {epoch+1:02}, Idx: {idx+1}, Training Loss: {loss.item():.4f}, Training Accuracy: {acc.item(): .2f}%, Time taken: {((time.time()-start_train_time)/60): .2f} min')
start_train_time = time.time()
total_epoch_loss += loss.item()
total_epoch_acc += acc.item()
return total_epoch_loss/len(train_iter), total_epoch_acc/len(train_iter)
def train(train_loader, model, optimizer, epoch, save_path):
global step
model.train()
loss_all = 0
epoch_step = 0
try:
for i, (images, gts, depths) in enumerate(train_loader, start=1):
optimizer.zero_grad()
images = images.cuda()
gts = gts.cuda()
depths = depths.cuda()
s, _1, _2, _3, _4 = model(images, depths)
loss1 = CE(s, gts)
loss2 = CE(_1, gts) / 2 + CE(_2, gts) / 4 + CE(_3, gts) / 8 + CE(
_4, gts) / 16
loss = loss1 + loss2
with amp.scale_loss(loss, optimizer) as scale_loss:
scale_loss.backward()
#loss.backward()
clip_gradient(optimizer, opt.clip)
optimizer.step()
step += 1
epoch_step += 1
loss_all += loss.data
if i % 100 == 0 or i == total_step or i == 1:
print(
'{} Epoch [{:03d}/{:03d}], Step [{:04d}/{:04d}], Loss1: {:.4f} Loss2: {:0.4f}'
.format(datetime.now(), epoch, opt.epoch, i, total_step,
loss1.data, loss2.data))
logging.info(
'#TRAIN#:Epoch [{:03d}/{:03d}], Step [{:04d}/{:04d}], Loss1: {:.4f} Loss2: {:0.4f}'
.format(epoch, opt.epoch, i, total_step, loss1.data,
loss2.data))
loss_all /= epoch_step
logging.info('#####TRAIN#####')
logging.info('Epoch [{:03d}/{:03d}], Loss_AVG: {:.4f}'.format(
epoch, opt.epoch, loss_all))
if (epoch) % 10 == 0:
torch.save(model.state_dict(),
save_path + 'epoch_{}.pth'.format(epoch))
except KeyboardInterrupt:
print('Keyboard Interrupt: save model and exit.')
if not os.path.exists(save_path):
os.makedirs(save_path)
torch.save(model.state_dict(),
save_path + 'epoch_{}.pth'.format(epoch + 1))
raise
def train(epoch):
print('\nEpoch: %d' % epoch)
global Train_acc
net.train()
train_loss = 0
correct = 0
total = 0
if epoch > learning_rate_decay_start and learning_rate_decay_start >= 0:
frac = (epoch - learning_rate_decay_start) // learning_rate_decay_every
decay_factor = learning_rate_decay_rate**frac
current_lr = opt.lr * decay_factor
utils.set_lr(optimizer, current_lr) # set the decayed rate
else:
current_lr = opt.lr
print('learning_rate: %s' % str(current_lr))
for batch_idx, (inputs, targets) in enumerate(trainloader):
bs, c, h, w = np.shape(inputs)
spl = int(bs / 2)
input1 = inputs[0:spl]
label1 = targets[0:spl]
input2 = inputs[spl:bs]
label2 = targets[spl:bs]
input1 = perturb(input1, label1, 0.2, net)
input1 = torch.Tensor(input1)
inputs = np.vstack((input1, input2))
inputs = torch.Tensor(inputs)
if use_cuda:
inputs, targets = inputs.cuda(), targets.cuda()
optimizer.zero_grad()
inputs, targets = Variable(inputs), Variable(targets)
outputs = net(inputs)
loss = criterion(outputs, targets)
loss.backward()
utils.clip_gradient(optimizer, 0.1)
optimizer.step()
train_loss += loss.data.item()
_, predicted = torch.max(outputs.data, 1)
total += targets.size(0)
correct += predicted.eq(targets.data).cpu().sum()
'''
utils.progress_bar(batch_idx, len(trainloader), 'Loss: %.3f | Acc: %.3f%% (%d/%d)'
% (train_loss/(batch_idx+1), 100.*correct/total, correct, total))
'''
Train_acc = 100. * correct / total
if ((epoch + 1) % 10 == 0):
Ta = float(Train_acc)
temp_train_acc.append(Ta)
temp_train_loss.append(train_loss)
def train(train_loader, model, criterions, optimizer, epoch):
batch_time = AverageMeter()
data_time = AverageMeter()
losses = AverageMeter()
accs = AverageMeter()
# switch to train mode
model.train()
end = time.time()
for i, (inputs, targets, infos) in enumerate(train_loader):
# measure data loading time
data_time.update(time.time() - end)
# construct targets
target_clsf, target_unc, target_ex = targets
target_conf = (target_clsf + target_ex) > 0
rhem_wt = torch.zeros_like(target_clsf).cuda()
rhem_wt[target_conf] = 1.
target_clsf = target_clsf.cuda()
target_clsf_wt = 1-target_unc.cuda()
# run model
inputs = [input.cuda() for input in inputs]
out = model(inputs)
# compute losses
emb = out['emb']
A, P, N = select_triplets_multilabel(emb, target_clsf)
loss_metric = criterions['metric'](A, P, N)
prob1 = out['class_prob1']
loss_ce1 = criterions['wce'](prob1, target_clsf, infos, wt=target_clsf_wt)
loss_rhem = criterions['rhem'](prob1, target_clsf, infos, wt=rhem_wt)
if config.SCORE_PROPAGATION:
prob2 = out['class_prob2']
loss_ce2 = criterions['wce'](prob2, target_clsf, infos, wt=target_clsf_wt)
sub_losses = [loss_ce1, loss_rhem, loss_metric, loss_ce2]
wts_names = ['CE_LOSS_WT_1', 'RHEM_LOSS_WT', 'TRIPLET_LOSS_WT', 'CE_LOSS_WT_2']
else:
sub_losses = [loss_ce1, loss_rhem, loss_metric]
wts_names = ['CE_LOSS_WT_1', 'RHEM_LOSS_WT', 'TRIPLET_LOSS_WT']
loss = 0
wts = [eval('config.TRAIN.' + name1) for name1 in wts_names]
for wt1, loss1 in zip(wts, sub_losses):
loss += wt1 * loss1
losses.update(loss.item())
# compute gradient and do SGD step
optimizer.zero_grad()
loss.backward()
clip_gradient(model, default.clip_gradient)
optimizer.step()
# measure accuracy
if config.SCORE_PROPAGATION:
prob_np = prob2.detach().cpu().numpy()
else:
prob_np = prob1.detach().cpu().numpy()
pred_labels = score2label(prob_np, config.TEST.SCORE_PARAM)
targets_np = target_clsf.detach().cpu().numpy()
target_unc = target_unc.numpy()
acc = compute_all_acc_wt(targets_np > 0, pred_labels, prob_np, target_unc == 0)[config.TEST.CRITERION]
accs.update(acc)
# measure elapsed time
batch_time.update(time.time() - end)
end = time.time()
if i % default.frequent == 0:
crit = 'mean_pcF1' if config.TEST.CRITERION == 'mean_perclass_f1' else config.TEST.CRITERION
msg = 'Epoch: [{0}][{1}/{2}] Time {batch_time.val:.1f} ' \
'({batch_time.avg:.1f}, {data_time.val:.1f})\t' \
.format(epoch, i, len(train_loader), batch_time=batch_time, data_time=data_time)
msg += 'Loss {loss.val:.3f} ({loss.avg:.3f}){{'.format(loss=losses)
for wt1, loss1 in zip(wts, sub_losses):
msg += '%.3f*%.1f, ' % (loss1, wt1)
msg += '}}\t{crit} {accs.val:.3f} ({accs.avg:.3f})'.format(
crit=crit, accs=accs, ms=prob_np.max())
logger.info(msg)
