def main():
train_data, test_data, _ = train_validate_test_loader(
"../data/Childers/M/speech",
"../data/Childers/M/egg",
split={
"train": 0.7,
"validate": 0.1,
"test": 0.2
},
batch_size=1,
workers=2,
stride={
"train": 2,
"validate": 20
},
pin_memory=False,
model_folder="data/irish_clean_data",
)
model_G = SpeechEggEncoder()
model_D = Discriminator()
save_model = Saver("checkpoints/vmodels/childers_clean_l2")
encoder = EGGEncoder()
save_encoder = Saver_Encoder("encoder")
encoder, _, _ = save_encoder.load_checkpoint(encoder,
file_name="epoch_65.pt")
use_cuda = True
epochs = 100
optimizer_G = optim.Adam(list(model_G.parameters())[:12], lr=2e-3)
optimizer_R = optim.Adam(model_G.parameters(), lr=2e-3)
optimizer_D = optim.Adam(model_D.parameters(), lr=2e-3)
scheduler_G = optim.lr_scheduler.StepLR(optimizer_G, 10, 0.9)
scheduler_D = optim.lr_scheduler.StepLR(optimizer_D, 10, 0.9)
scheduler_R = optim.lr_scheduler.StepLR(optimizer_D, 10, 0.5)
with warnings.catch_warnings():
warnings.simplefilter("ignore")
for i in range(1, epochs + 1):
net_loss, D_loss, G_loss, R_loss, D_real_prob, D_fake_prob = train(
model_G,
model_D,
encoder,
optimizer_G,
optimizer_R,
optimizer_D,
train_data,
use_cuda,
)
print(
"Train loss {:4.4} D_loss {:4.4} G_loss {:4.4} reconstruction loss {:4.4} Real D prob. {:4.4} Fake D prob. {:4.4} @epoch {}"
.format(net_loss, D_loss, G_loss, R_loss, D_real_prob,
D_fake_prob, i))
if i % 5 == 0:
checkpoint = save_model.create_checkpoint(
model_G,
model_D,
optimizer_G,
optimizer_R,
optimizer_D,
{
"win": 100,
"stride": 3
},
)
save_model.save_checkpoint(checkpoint,
file_name="epoch_{}.pt".format(i),
append_time=False)
test(model_G, model_D, encoder, test_data, use_cuda)
if scheduler_G is not None:
scheduler_G.step()
scheduler_D.step()
scheduler_R.step()
loss.backward()
optimizer.step()
# Print loss
iterator.set_description(
'Epoch [{epoch}/{epochs}] :: Train Loss {loss:.4f}'.format(epoch=epoch, epochs=args.epochs,
loss=loss.item()))
writer.add_scalar('train/{loss_type}/total_loss_iter', loss.item(), epoch * len(dataloader) + i)
if i % (len(dataloader) // 10):
summary.visualize_image(writer, data, seg, epoch * len(dataloader) + i)
if not epoch % 1:
saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': model.module.state_dict(),
'optimizer': optimizer.state_dict(),
'best_pred': best_pred,
}, is_best)
if args.validate:
# Validate
with torch.no_grad():
model.eval()
iterator = tqdm(dataloader_val,
leave=True,
dynamic_ncols=True,
desc='Validation ::')
input = dataset_val.img[
dataset_val.effective_lable_idx[0][0]:dataset_val.effective_lable_idx[0][1],
dataset_val.effective_lable_idx[1][0]:dataset_val.effective_lable_idx[1][1],
dataset_val.effective_lable_idx[2][0]:dataset_val.effective_lable_idx[2][1]
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(args.logdir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
dltrain = DLDataset('trainval', "./data/pascal_voc_seg/tfrecord/")
dlval = DLDataset('val', "./data/pascal_voc_seg/tfrecord/")
# dltrain = DLDataset('trainval', "./data/pascal_voc_seg/VOCdevkit/VOC2012/")
# dlval = DLDataset('val', "./data/pascal_voc_seg/VOCdevkit/VOC2012/")
self.train_loader = DataLoader(dltrain,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.workers,
pin_memory=True)
self.val_loader = DataLoader(dlval,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.workers,
pin_memory=True)
# Define network
model = Deeplab()
train_params = [{
'params': model.get_1x_lr_params(),
'lr': args.lr
}, {
'params': model.get_10x_lr_params(),
'lr': args.lr * 10
}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov=args.nesterov)
# Define Criterion
# whether to use class balanced weights
self.criterion = nn.CrossEntropyLoss(ignore_index=255).cuda()
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(21)
# Define lr scheduler
self.scheduler = optim.lr_scheduler.ReduceLROnPlateau(
optimizer=optimizer)
# Using cuda
# if args.cuda:
# self.model = torch.nn.DataParallel(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, (image, target) in enumerate(tbar):
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.optimizer.zero_grad()
output = self.model(image)
loss = self.criterion(output, target.long())
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(),
i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
# if i % (num_img_tr // 10) == 0:
if i % 10 == 0:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset,
image, target, output,
global_step)
self.scheduler.step(train_loss)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, (image, target) in enumerate(tbar):
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target.long())
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(
Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)