def main(args=args):
if args.dataset == "Cifar10":
dataset_base_path = path.join(args.base_path, "dataset", "cifar")
train_dataset = cifar10_dataset(dataset_base_path)
test_dataset = cifar10_dataset(dataset_base_path, train_flag=False)
sampler_valid, sampler_train_l, sampler_train_u = get_cifar10_ssl_sampler(
torch.tensor(train_dataset.targets, dtype=torch.int32), 500, round(4000 * args.annotated_ratio), 10)
test_dloader = DataLoader(test_dataset, batch_size=args.batch_size, num_workers=args.workers, pin_memory=True)
valid_dloader = DataLoader(train_dataset, batch_size=args.batch_size, num_workers=args.workers, pin_memory=True,
sampler=sampler_valid)
train_dloader_l = DataLoader(train_dataset, batch_size=args.batch_size, num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_l)
train_dloader_u = DataLoader(train_dataset, batch_size=args.batch_size, num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_u)
input_channels = 3
small_input = True
discrete_latent_dim = 10
args.cmi = 200
args.dmi = 2.3
elbo_criterion = VAECriterion(discrete_dim=discrete_latent_dim, x_sigma=args.x_sigma,
bce_reconstruction=args.br).cuda()
cls_criterion = ClsCriterion()
elif args.dataset == "Cifar100":
dataset_base_path = path.join(args.base_path, "dataset", "cifar")
train_dataset = cifar100_dataset(dataset_base_path)
test_dataset = cifar100_dataset(dataset_base_path, train_flag=False)
sampler_valid, sampler_train_l, sampler_train_u = get_cifar100_ssl_sampler(
torch.tensor(train_dataset.targets, dtype=torch.int32), 50, round(400 * args.annotated_ratio), 100)
test_dloader = DataLoader(test_dataset, batch_size=args.batch_size, num_workers=args.workers, pin_memory=True)
valid_dloader = DataLoader(train_dataset, batch_size=args.batch_size, num_workers=args.workers, pin_memory=True,
sampler=sampler_valid)
train_dloader_l = DataLoader(train_dataset, batch_size=args.batch_size, num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_l)
train_dloader_u = DataLoader(train_dataset, batch_size=args.batch_size, num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_u)
input_channels = 3
small_input = True
discrete_latent_dim = 100
args.cmi = 1280
args.dmi = 4.6
elbo_criterion = VAECriterion(discrete_dim=discrete_latent_dim, x_sigma=args.x_sigma,
bce_reconstruction=args.br).cuda()
cls_criterion = ClsCriterion()
elif args.dataset == "SVHN":
dataset_base_path = path.join(args.base_path, "dataset", "svhn")
train_dataset = svhn_dataset(dataset_base_path)
test_dataset = svhn_dataset(dataset_base_path, train_flag=False)
sampler_valid, sampler_train_l, sampler_train_u = get_ssl_sampler(
torch.tensor(train_dataset.labels, dtype=torch.int32), 100, 100, 10)
test_dloader = DataLoader(test_dataset, batch_size=args.batch_size, num_workers=args.workers, pin_memory=True)
valid_dloader = DataLoader(train_dataset, batch_size=args.batch_size, num_workers=args.workers, pin_memory=True,
sampler=sampler_valid)
train_dloader_l = DataLoader(train_dataset, batch_size=args.batch_size, num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_l)
train_dloader_u = DataLoader(train_dataset, batch_size=args.batch_size, num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_u)
input_channels = 3
small_input = True
discrete_latent_dim = 10
elbo_criterion = VAECriterion(discrete_dim=discrete_latent_dim, x_sigma=args.x_sigma,
bce_reconstruction=args.br).cuda()
cls_criterion = ClsCriterion()
else:
raise NotImplementedError("Dataset {} not implemented".format(args.dataset))
model = VariationalAutoEncoder(encoder_name=args.net_name, num_input_channels=input_channels,
drop_rate=args.drop_rate, img_size=tuple(args.image_size), data_parallel=args.dp,
continuous_latent_dim=args.ldc, disc_latent_dim=discrete_latent_dim,
sample_temperature=args.temperature, small_input=small_input)
model = model.cuda()
print("Begin the {} Time's Training Semi-Supervised VAE, Dataset {}".format(args.train_time, args.dataset))
optimizer = torch.optim.SGD(model.parameters(), lr=args.lr, momentum=args.beta1, weight_decay=args.wd)
scheduler = MultiStepLR(optimizer, milestones=args.adjust_lr)
writer_log_dir = "{}/{}-M2-VAE/runs/train_time:{}".format(args.base_path, args.dataset,
args.train_time)
if args.resume:
if os.path.isfile(args.resume):
print("=> loading checkpoint '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
args = checkpoint['args']
args.start_epoch = checkpoint['epoch']
model.load_state_dict(checkpoint['state_dict'])
optimizer.load_state_dict(checkpoint['optimizer'])
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
else:
raise FileNotFoundError("Checkpoint Resume File {} Not Found".format(args.resume))
else:
if os.path.exists(writer_log_dir):
flag = input("vae_train_time:{} will be removed, input yes to continue:".format(
args.train_time))
if flag == "yes":
shutil.rmtree(writer_log_dir, ignore_errors=True)
writer = SummaryWriter(log_dir=writer_log_dir)
best_valid_acc = 10
for epoch in range(args.start_epoch, args.epochs):
if epoch == 0:
# do warm up
modify_lr_rate(opt=optimizer, lr=args.lr * 0.2)
train(train_dloader_u, train_dloader_l, model=model, elbo_criterion=elbo_criterion, cls_criterion=cls_criterion,
optimizer=optimizer, epoch=epoch,
writer=writer, discrete_latent_dim=discrete_latent_dim)
elbo_valid_loss, *_ = valid(valid_dloader, model=model, elbo_criterion=elbo_criterion, epoch=epoch,
writer=writer, discrete_latent_dim=discrete_latent_dim)
if test_dloader is not None:
test(test_dloader, model=model, elbo_criterion=elbo_criterion,epoch=epoch,
writer=writer, discrete_latent_dim=discrete_latent_dim)
"""
Here we define the best point as the minimum average epoch loss
"""
save_checkpoint({
'epoch': epoch + 1,
'args': args,
"state_dict": model.state_dict(),
'optimizer': optimizer.state_dict(),
})
if elbo_valid_loss < best_valid_acc:
best_valid_acc = elbo_valid_loss
if epoch >= args.adjust_lr[-1]:
save_checkpoint({
'epoch': epoch + 1,
'args': args,
"state_dict": model.state_dict(),
'optimizer': optimizer.state_dict()
}, best_predict=True)
scheduler.step(epoch)
if epoch == 0:
modify_lr_rate(opt=optimizer, lr=args.lr)
def main(args=args):
os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu
zca_mean = None
zca_components = None
# build dataset
if args.dataset == "Cifar10":
dataset_base_path = path.join(args.base_path, "dataset", "cifar")
train_dataset = cifar10_dataset(dataset_base_path)
test_dataset = cifar10_dataset(dataset_base_path, train_flag=False)
sampler_valid, sampler_train_l, sampler_train_u = get_ssl_sampler(
torch.tensor(train_dataset.targets, dtype=torch.int32), 500, 400,
10)
test_dloader = DataLoader(test_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True)
valid_dloader = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_valid)
train_dloader_l = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_l)
train_dloader_u = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_u)
num_classes = 10
if args.zca:
zca_mean = np.load(
os.path.join(dataset_base_path, 'cifar10_zca_mean.npy'))
zca_components = np.load(
os.path.join(dataset_base_path, 'cifar10_zca_components.npy'))
zca_mean = torch.from_numpy(zca_mean).view(1, -1).float().cuda()
zca_components = torch.from_numpy(zca_components).float().cuda()
elif args.dataset == "Cifar100":
dataset_base_path = path.join(args.base_path, "dataset", "cifar")
train_dataset = cifar100_dataset(dataset_base_path)
test_dataset = cifar100_dataset(dataset_base_path, train_flag=False)
sampler_valid, sampler_train_l, sampler_train_u = get_ssl_sampler(
torch.tensor(train_dataset.targets, dtype=torch.int32), 50, 40,
100)
test_dloader = DataLoader(test_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True)
valid_dloader = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_valid)
train_dloader_l = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_l)
train_dloader_u = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_u)
num_classes = 100
elif args.dataset == "SVHN":
dataset_base_path = path.join(args.base_path, "dataset", "svhn")
train_dataset = svhn_dataset(dataset_base_path)
test_dataset = svhn_dataset(dataset_base_path, train_flag=False)
sampler_valid, sampler_train_l, sampler_train_u = get_ssl_sampler(
torch.tensor(train_dataset.labels, dtype=torch.int32), 732, 100,
10)
test_dloader = DataLoader(test_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True)
valid_dloader = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_valid)
train_dloader_l = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_l)
train_dloader_u = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_u)
num_classes = 10
else:
raise NotImplementedError("Dataset {} Not Implemented".format(
args.dataset))
if args.net_name == "wideresnet":
model = wideresnet.WideResNet(depth=args.depth,
width=args.width,
num_classes=num_classes,
data_parallel=args.dp,
drop_rate=args.dr)
elif "preact" in args.net_name:
model = get_preact_resnet(args.net_name,
num_classes=num_classes,
data_parallel=args.dp,
drop_rate=args.dr)
elif "densenet" in args.net_name:
model = get_densenet(args.net_name,
num_classes=num_classes,
data_parallel=args.dp,
drop_rate=args.dr)
else:
raise NotImplementedError("model {} not implemented".format(
args.net_name))
model = model.cuda()
input(
"Begin the {} time's semi-supervised training, Dataset:{} Mixup Method:{} \
Manifold Mixup Method :{}".format(args.train_time, args.dataset,
args.mixup, args.manifold_mixup))
criterion_l = nn.CrossEntropyLoss()
criterion_u = nn.MSELoss()
if args.optimizer == "SGD":
optimizer = torch.optim.SGD(model.parameters(),
lr=args.lr,
momentum=args.momentum,
weight_decay=args.wd,
nesterov=args.nesterov)
else:
raise NotImplementedError("{} not find".format(args.optimizer))
scheduler = MultiStepLR(optimizer,
milestones=args.adjust_lr,
gamma=args.lr_decay_ratio)
writer_log_dir = "{}/{}-SSL/runs/train_time:{}".format(
args.base_path, args.dataset, args.train_time)
if args.resume:
if os.path.isfile(args.resume):
print("=> loading checkpoint '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
if args.resume_arg:
args = checkpoint['args']
args.start_epoch = checkpoint['epoch']
model.load_state_dict(checkpoint['state_dict'])
optimizer.load_state_dict(checkpoint['optimizer'])
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
else:
raise FileNotFoundError(
"Checkpoint Resume File {} Not Found".format(args.resume))
else:
if os.path.exists(writer_log_dir):
flag = input(
"{}-SSL train_time:{} will be removed, input yes to continue:".
format(args.dataset, args.train_time))
if flag == "yes":
shutil.rmtree(writer_log_dir, ignore_errors=True)
writer = SummaryWriter(log_dir=writer_log_dir)
for epoch in range(args.start_epoch, args.epochs):
scheduler.step(epoch)
if epoch == 0:
# do warm up
modify_lr_rate(opt=optimizer, lr=args.wul)
alpha = alpha_schedule(epoch=epoch)
train(train_dloader_l,
train_dloader_u,
model=model,
criterion_l=criterion_l,
criterion_u=criterion_u,
optimizer=optimizer,
epoch=epoch,
writer=writer,
alpha=alpha,
zca_mean=zca_mean,
zca_components=zca_components)
test(valid_dloader,
test_dloader,
model=model,
criterion=criterion_l,
epoch=epoch,
writer=writer,
num_classes=num_classes,
zca_mean=zca_mean,
zca_components=zca_components)
save_checkpoint({
'epoch': epoch + 1,
'args': args,
"state_dict": model.state_dict(),
'optimizer': optimizer.state_dict(),
})
if epoch == 0:
modify_lr_rate(opt=optimizer, lr=args.lr)
def main(args=args):
if args.dataset == "Cifar10":
dataset_base_path = path.join(args.base_path, "dataset", "cifar")
train_dataset = cifar10_dataset(dataset_base_path)
test_dataset = cifar10_dataset(dataset_base_path, train_flag=False)
sampler_valid, sampler_train_l, sampler_train_u = get_cifar10_ssl_sampler(
torch.tensor(train_dataset.targets, dtype=torch.int32), 500,
round(4000 * args.annotated_ratio), 10)
test_dloader = DataLoader(test_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True)
valid_dloader = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_valid)
train_dloader_l = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_l)
train_dloader_u = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_u)
input_channels = 3
num_classes = 10
small_input = True
criterion = torch.nn.CrossEntropyLoss()
elif args.dataset == "Cifar100":
dataset_base_path = path.join(args.base_path, "dataset", "cifar")
train_dataset = cifar100_dataset(dataset_base_path)
test_dataset = cifar100_dataset(dataset_base_path, train_flag=False)
sampler_valid, sampler_train_l, sampler_train_u = get_cifar100_ssl_sampler(
torch.tensor(train_dataset.targets, dtype=torch.int32), 50,
round(400 * args.annotated_ratio), 100)
test_dloader = DataLoader(test_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True)
valid_dloader = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_valid)
train_dloader_l = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_l)
train_dloader_u = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_u)
input_channels = 3
num_classes = 100
small_input = True
criterion = torch.nn.CrossEntropyLoss()
elif args.dataset == "SVHN":
dataset_base_path = path.join(args.base_path, "dataset", "svhn")
train_dataset = svhn_dataset(dataset_base_path)
test_dataset = svhn_dataset(dataset_base_path, train_flag=False)
sampler_valid, sampler_train_l, sampler_train_u = get_ssl_sampler(
torch.tensor(train_dataset.labels, dtype=torch.int32), 100, 100,
10)
test_dloader = DataLoader(test_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True)
valid_dloader = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_valid)
train_dloader_l = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_l)
train_dloader_u = DataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.workers,
pin_memory=True,
sampler=sampler_train_u)
input_channels = 3
num_classes = 10
small_input = True
criterion = torch.nn.CrossEntropyLoss()
else:
raise NotImplementedError("Dataset {} Not Implemented".format(
args.dataset))
model = get_wide_resnet(args.net_name,
args.drop_rate,
input_channels=input_channels,
small_input=small_input,
data_parallel=args.dp,
num_classes=num_classes)
model = model.cuda()
print(
"Begin the {} Time's Training Semi-Supervised Classifiers, Dataset {}".
format(args.train_time, args.dataset))
optimizer = torch.optim.SGD(model.parameters(),
lr=args.lr,
momentum=args.beta1,
weight_decay=args.wd)
scheduler = MultiStepLR(optimizer,
milestones=args.adjust_lr,
gamma=args.lr_decay_ratio)
writer_log_dir = "{}/{}-SSL-Classifier/runs/train_time:{}".format(
args.base_path, args.dataset, args.train_time)
if args.resume:
if os.path.isfile(args.resume):
print("=> loading checkpoint '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
args = checkpoint['args']
args.start_epoch = checkpoint['epoch']
model.load_state_dict(checkpoint['state_dict'])
optimizer.load_state_dict(checkpoint['optimizer'])
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
else:
raise FileNotFoundError(
"Checkpoint Resume File {} Not Found".format(args.resume))
else:
if os.path.exists(writer_log_dir):
flag = input(
"vae_train_time:{} will be removed, input yes to continue:".
format(args.train_time))
if flag == "yes":
shutil.rmtree(writer_log_dir, ignore_errors=True)
writer = SummaryWriter(log_dir=writer_log_dir)
for epoch in range(args.start_epoch, args.epochs):
if epoch == 0:
# do warm up
modify_lr_rate(opt=optimizer, lr=args.lr * 0.2)
train(train_dloader_l,
model=model,
criterion=criterion,
optimizer=optimizer,
epoch=epoch,
writer=writer)
test(valid_dloader,
test_dloader,
model=model,
criterion=criterion,
epoch=epoch,
writer=writer,
num_classes=num_classes)
if epoch == 0:
modify_lr_rate(opt=optimizer, lr=args.lr)
scheduler.step(epoch)