output, target, size_average=False).data[0]
correct = correct + pred.eq(target.data.view_as(pred)).cpu().sum()
test_loss /= len(testloader.dataset)
print(
'\nTest set: Average loss: {:.4f}, Accuracy: {}/{} ({:.0f}%)\n'.format(
test_loss, correct, len(testloader.dataset),
100. * correct / len(testloader.dataset)))
if __name__ == "__main__":
svhn_dataset_train = SVHN(root='/data02/Atin/DeployedProjects/SVHN',
split='train',
transform=Compose([
Lambda(addGaussian),
ToTensor(),
Normalize(mean, std)
]))
svhn_dataset_test = SVHN(root='/data02/Atin/DeployedProjects/SVHN',
split='test',
download=True,
transform=Compose(
[ToTensor(), Normalize(mean, std)]))
train_dataloader = DataLoader(svhn_dataset_train,
batch_size=64,
num_workers=10,
shuffle=True)
test_dataloader = DataLoader(svhn_dataset_test,
batch_size=64,
def __init__(self, train=True, augment=False):
transform = transforms.ToTensor()
self.data = SVHN("/tmp/svhn", transform=transform, download=True)
self.one_hot_map = np.eye(10)
def load_data(opt):
""" Load Data
Args:
opt ([type]): Argument Parser
Raises:
IOError: Cannot Load Dataset
Returns:
[type]: dataloader
"""
##
# LOAD DATA SET
if opt.dataroot == '':
opt.dataroot = './data/{}'.format(opt.dataset)
if opt.dataset in ['cifar10']:
splits = ['train', 'test']
drop_last_batch = {'train': True, 'test': False}
shuffle = {'train': True, 'test': False}
transform = transforms.Compose([
transforms.Resize(opt.isize),
transforms.ToTensor(),
transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5))
])
classes = {
'plane': 0,
'car': 1,
'bird': 2,
'cat': 3,
'deer': 4,
'dog': 5,
'frog': 6,
'horse': 7,
'ship': 8,
'truck': 9
}
dataset = {}
dataset['train'] = CIFAR10(root='./data',
train=True,
download=True,
transform=transform)
dataset['test'] = CIFAR10(root='./data',
train=False,
download=True,
transform=transform)
if opt.task == 'anomaly_detect':
dataset['train'].train_data, dataset['train'].train_labels, \
dataset['test'].test_data, dataset['test'].test_labels = get_cifar_anomaly_dataset(
trn_img=dataset['train'].train_data,
trn_lbl=dataset['train'].train_labels,
tst_img=dataset['test'].test_data,
tst_lbl=dataset['test'].test_labels,
abn_cls_idx=classes[opt.anomaly_class]
)
elif opt.task == 'random_walk':
dataset['train'].train_data, dataset['train'].train_labels, \
dataset['test'].test_data, dataset['test'].test_labels = get_sub_cifar10_dataset(
trn_img=dataset['train'].train_data,
trn_lbl=dataset['train'].train_labels,
tst_img=dataset['test'].test_data,
tst_lbl=dataset['test'].test_labels,
)
elif opt.task == 'llk_trend':
dataset['train'].train_data, dataset['train'].train_labels, \
dataset['test'].test_data, dataset['test'].test_labels = get_sub_cifar10_dataset(
trn_img=dataset['train'].train_data,
trn_lbl=dataset['train'].train_labels,
tst_img=dataset['test'].test_data,
tst_lbl=dataset['test'].test_labels,
abn_cls_idx=[0]
)
elif opt.task == 'rw_llk': ##for simplication, let's do it together
dataset['train'].train_data, dataset['train'].train_labels, \
dataset['test'].test_data, dataset['test'].test_labels = get_cifar_rwllk_dataset(
trn_img=dataset['train'].train_data,
trn_lbl=dataset['train'].train_labels,
tst_img=dataset['test'].test_data,
tst_lbl=dataset['test'].test_labels,
abn_cls_idx=classes[opt.anomaly_class]
)
dataloader = {
x: torch.utils.data.DataLoader(dataset=dataset[x],
batch_size=opt.batch_size,
shuffle=shuffle[x],
num_workers=int(opt.workers),
drop_last=drop_last_batch[x])
for x in splits
}
return dataloader
elif opt.dataset in ['mnist']:
opt.anomaly_class = int(opt.anomaly_class)
splits = ['train', 'test']
drop_last_batch = {'train': True, 'test': False}
shuffle = {'train': True, 'test': True}
##it seems that the transform in our GAN, we can use identical transform for both cifar10 and mnist
##the following is not working well at all.
# transform = transforms.Compose(
# [
# transforms.Scale(opt.isize),
# transforms.ToTensor(),
# transforms.Normalize((0.1307,), (0.3081,))
# ]
# )
##the second one is good for mnist
transform = transforms.Compose([
transforms.Resize((opt.isize, opt.isize)),
transforms.ToTensor(),
transforms.Normalize(mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5))
])
dataset = {}
dataset['train'] = MNIST(root='./data',
train=True,
download=True,
transform=transform)
dataset['test'] = MNIST(root='./data',
train=False,
download=True,
transform=transform)
if opt.task == 'anomaly_detect':
dataset['train'].train_data, dataset['train'].train_labels, \
dataset['test'].test_data, dataset['test'].test_labels = get_mnist_anomaly_dataset(
trn_img=dataset['train'].train_data,
trn_lbl=dataset['train'].train_labels,
tst_img=dataset['test'].test_data,
tst_lbl=dataset['test'].test_labels,
abn_cls_idx=opt.anomaly_class
)
elif opt.task == 'random_walk':
dataset['train'].train_data, dataset['train'].train_labels, \
dataset['test'].test_data, dataset['test'].test_labels = get_sub_mnist_dataset(
trn_img=dataset['train'].train_data,
trn_lbl=dataset['train'].train_labels,
tst_img=dataset['test'].test_data,
tst_lbl=dataset['test'].test_labels,
)
elif opt.task == 'llk_trend':
dataset['train'].train_data, dataset['train'].train_labels, \
dataset['test'].test_data, dataset['test'].test_labels = get_sub_mnist_dataset(
trn_img=dataset['train'].train_data,
trn_lbl=dataset['train'].train_labels,
tst_img=dataset['test'].test_data,
tst_lbl=dataset['test'].test_labels,
abn_cls_idx = [0]
)
elif opt.task == 'rw_llk': ##for simplication, let's do it together
dataset['train'].train_data, dataset['train'].train_labels, \
dataset['test'].test_data, dataset['test'].test_labels = get_mnist_rwllk_dataset(
trn_img=dataset['train'].train_data,
trn_lbl=dataset['train'].train_labels,
tst_img=dataset['test'].test_data,
tst_lbl=dataset['test'].test_labels,
abn_cls_idx=opt.anomaly_class
)
dataloader = {
x: torch.utils.data.DataLoader(dataset=dataset[x],
batch_size=opt.batch_size,
shuffle=shuffle[x],
num_workers=int(opt.workers),
drop_last=drop_last_batch[x])
for x in splits
}
return dataloader
elif opt.dataset in ['svhn']:
opt.anomaly_class = int(opt.anomaly_class)
splits = ['train', 'test']
drop_last_batch = {'train': True, 'test': False}
shuffle = {'train': True, 'test': True}
##it seems that the transform in our GAN, we can use identical transform for both cifar10 and mnist
##the following is not working well at all.
# transform = transforms.Compose(
# [
# transforms.Scale(opt.isize),
# transforms.ToTensor(),
# transforms.Normalize((0.1307,), (0.3081,))
# ]
# )
##the second one is good for mnist
transform = transforms.Compose([
transforms.Resize((opt.isize, opt.isize)),
transforms.ToTensor(),
transforms.Normalize(mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5))
])
dataset = {}
dataset['train'] = SVHN(root='./data',
split='train',
download=True,
transform=transform)
dataset['test'] = SVHN(root='./data',
split='test',
download=True,
transform=transform)
if opt.task == 'anomaly_detect':
dataset['train'].train_data, dataset['train'].train_labels, \
dataset['test'].test_data, dataset['test'].test_labels = get_cifar_anomaly_dataset( ##not sure if we need to write a get_svhn_anomaly_dataset yet.
trn_img=dataset['train'].data,
trn_lbl=dataset['train'].labels,
tst_img=dataset['test'].data,
tst_lbl=dataset['test'].labels,
abn_cls_idx=opt.anomaly_class
)
dataloader = {
x: torch.utils.data.DataLoader(dataset=dataset[x],
batch_size=opt.batch_size,
shuffle=shuffle[x],
num_workers=int(opt.workers),
drop_last=drop_last_batch[x])
for x in splits
}
return dataloader
elif opt.dataset in ['mnist2']:
opt.anomaly_class = int(opt.anomaly_class)
splits = ['train', 'test']
drop_last_batch = {'train': True, 'test': False}
shuffle = {'train': True, 'test': True}
transform = transforms.Compose([
transforms.Scale(opt.isize),
transforms.ToTensor(),
transforms.Normalize((0.1307, ), (0.3081, ))
])
dataset = {}
dataset['train'] = MNIST(root='./data',
train=True,
download=True,
transform=transform)
dataset['test'] = MNIST(root='./data',
train=False,
download=True,
transform=transform)
if opt.task == 'anomaly_detect':
dataset['train'].train_data, dataset['train'].train_labels, \
dataset['test'].test_data, dataset['test'].test_labels = get_mnist2_anomaly_dataset(
trn_img=dataset['train'].train_data,
trn_lbl=dataset['train'].train_labels,
tst_img=dataset['test'].test_data,
tst_lbl=dataset['test'].test_labels,
nrm_cls_idx=opt.anomaly_class,
proportion=opt.proportion
)
dataloader = {
x: torch.utils.data.DataLoader(dataset=dataset[x],
batch_size=opt.batch_size,
shuffle=shuffle[x],
num_workers=int(opt.workers),
drop_last=drop_last_batch[x])
for x in splits
}
return dataloader
# elif opt.dataset in ['celebA']:
# ##not for abnormal detection but not for classification either
# splits = ['train', 'test']
# drop_last_batch = {'train': True, 'test': False}
# shuffle = {'train': True, 'test': True}
# transform = transforms.Compose([transforms.Scale(opt.isize),
# transforms.CenterCrop(opt.isize),
# transforms.ToTensor(),
# transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5)), ])
# print(os.path.abspath('./data/celebA'))
# dataset = datasets.ImageFolder(os.path.abspath('./data/celebA'), transform)
# dataloader = torch.utils.data.DataLoader(dataset=dataset, batch_size=opt.batch_size, shuffle=True)
# return dataloader
elif opt.dataset in ['celebA']:
##not for abnormal detection but not for classification either
# import helper
# helper.download_extract('celeba', opt.dataroot)
# splits = ['train', 'test']
# drop_last_batch = {'train': True, 'test': False}
# shuffle = {'train': True, 'test': True}
# transform = transforms.Compose([transforms.Scale(opt.isize),
# transforms.CenterCrop(opt.isize),
# transforms.ToTensor(),
# transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5)), ])
#
# # transform = transforms.Compose([
# # transforms.CenterCrop(160),
# # transforms.Scale(opt.isize),
# # transforms.ToTensor(),)
#
# dataset = ImageFolder(root=image_root, transform=transforms.Compose([
# transforms.CenterCrop(160),
# transforms.Scale(scale_size),
# transforms.ToTensor(),
# #transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5)),
# ]))
#
# dataset = {x: ImageFolder(os.path.join(opt.dataroot, x), transform) for x in splits}
# dataloader = {x: torch.utils.data.DataLoader(dataset=dataset[x],
# batch_size=opt.batch_size,
# shuffle=shuffle[x],
# num_workers=int(opt.workers),
# drop_last=drop_last_batch[x]) for x in splits}
dataloader = get_loader('./data/celebA', 'train', opt.batch_size,
opt.isize)
return dataloader
def forward(self, x_batch, y_batch):
loss_value = self.loss_function(x_batch, y_batch)
reg_value = torch.norm(self.weight_vector)
return loss_value + self.alpha * reg_value
import torch
from torch import nn
import numpy as np
from sklearn.decomposition import NMF
from torchvision.transforms import transforms
from torchvision.datasets import SVHN
SVHN()
class LRFLoss(nn.Module):
def __init__(self,
loss_function: nn.Module,
net: nn.Module,
verbose=False):
super().__init__()
self.loss_function = loss_function
self.net = net
self.k = 1
self.theta_star = list()
self.verbose = verbose
p_list = list(self.net.parameters())
for p in p_list:
d_list = [
'alice', 'alice-z', 'alice-x', 'vegan', 'vegan-wgan-gp', 'vegan-kl',
'vegan-ikl', 'vegan-jsd', 'vegan-mmd'
]
if method in d_list:
distance_x = 'l2' # l1, l2
lambda_ = 1. # Balance reconstruction and regularization in vegan
dim = 64 # Model dimensionality
output_dim = 3072 # Number of pixels in svhn (3*32*32)
transform = transforms.Compose([
transforms.ToTensor(),
transforms.Normalize(mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5))
])
train_dset = SVHN('./data/svhn', 'train', download=True, transform=transform)
test_dset = SVHN('./data/svhn', 'test', download=True, transform=transform)
train_loader = DataLoader(train_dset,
num_workers=4,
pin_memory=True,
batch_size=64,
shuffle=True,
drop_last=True)
test_loader = DataLoader(test_dset,
num_workers=4,
pin_memory=True,
batch_size=1,
shuffle=False)
num_iter = 200000
dim_latent = 128
def get_dataset(cfg, fine_tune):
data_transform = Compose([Resize((32, 32)), ToTensor()])
mnist_transform = Compose(
[Resize((32, 32)),
ToTensor(),
Lambda(lambda x: swapaxes(x, 1, -1))])
vade_transform = Compose([ToTensor()])
if cfg.DATA.DATASET == 'mnist':
transform = vade_transform if 'vade' in cfg.DIRS.CHKP_PREFIX \
else mnist_transform
training_set = MNIST(download=True,
root=cfg.DIRS.DATA,
transform=transform,
train=True)
val_set = MNIST(download=False,
root=cfg.DIRS.DATA,
transform=transform,
train=False)
plot_set = copy.deepcopy(val_set)
elif cfg.DATA.DATASET == 'svhn':
training_set = SVHN(download=True,
root=create_dir(cfg.DIRS.DATA, 'SVHN'),
transform=data_transform,
split='train')
val_set = SVHN(download=True,
root=create_dir(cfg.DIRS.DATA, 'SVHN'),
transform=data_transform,
split='test')
plot_set = copy.deepcopy(val_set)
elif cfg.DATA.DATASET == 'cifar':
training_set = CIFAR10(download=True,
root=create_dir(cfg.DIRS.DATA, 'CIFAR'),
transform=data_transform,
train=True)
val_set = CIFAR10(download=True,
root=create_dir(cfg.DIRS.DATA, 'CIFAR'),
transform=data_transform,
train=False)
plot_set = copy.deepcopy(val_set)
elif cfg.DATA.DATASET == 'lines':
vae = True if 'vae' in cfg.DIRS.CHKP_PREFIX else False
training_set = LinesDataset(args=cfg,
multiplier=1000,
dataset_type='train',
vae=vae)
val_set = LinesDataset(args=cfg,
multiplier=10,
dataset_type='test',
vae=vae)
plot_set = LinesDataset(args=cfg,
multiplier=1,
dataset_type='plot',
vae=vae)
if 'idec' in cfg.DIRS.CHKP_PREFIX and fine_tune:
training_set = IdecDataset(training_set)
val_set = IdecDataset(val_set)
plot_set = IdecDataset(plot_set)
return training_set, val_set, plot_set
def load_data(dataset, seed, args):
if seed:
# in normal method we do not implement random seed here
# same group should share the same shuffling result
torch.manual_seed(seed)
random.seed(seed)
if dataset == "MNIST":
training_set = datasets.MNIST('./mnist_data',
train=True,
download=True,
transform=transforms.Compose([
transforms.ToTensor(),
transforms.Normalize((0.1307, ),
(0.3081, ))
]))
train_loader = torch.utils.data.DataLoader(training_set,
batch_size=args.batch_size,
shuffle=True)
test_loader = None
elif dataset == "Cifar10":
normalize = transforms.Normalize(
mean=[x / 255.0 for x in [125.3, 123.0, 113.9]],
std=[x / 255.0 for x in [63.0, 62.1, 66.7]])
# data prep for training set
# note that the key point to reach convergence performance reported in this paper (https://arxiv.org/abs/1512.03385)
# is to implement data augmentation
transform_train = transforms.Compose([
transforms.ToTensor(),
transforms.Lambda(lambda x: F.pad(Variable(
x.unsqueeze(0), requires_grad=False), (4, 4, 4, 4),
mode='reflect').data.squeeze()),
transforms.ToPILImage(),
transforms.RandomCrop(32),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
normalize,
])
# data prep for test set
transform_test = transforms.Compose([transforms.ToTensor(), normalize])
# load training and test set here:
training_set = datasets.CIFAR10(root='./cifar10_data',
train=True,
download=True,
transform=transform_train)
train_loader = torch.utils.data.DataLoader(training_set,
batch_size=args.batch_size,
shuffle=True)
testset = datasets.CIFAR10(root='./cifar10_data',
train=False,
download=True,
transform=transform_test)
test_loader = torch.utils.data.DataLoader(
testset, batch_size=args.test_batch_size, shuffle=False)
elif args.dataset == 'SVHN':
training_set = SVHN('./svhn_data',
split='train',
transform=transforms.Compose([
transforms.RandomCrop(32, padding=4),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
transforms.Normalize((0.4914, 0.4822, 0.4465),
(0.2023, 0.1994, 0.2010)),
]))
train_loader = torch.utils.data.DataLoader(training_set,
batch_size=args.batch_size,
shuffle=True)
transform_test = transforms.Compose([
transforms.ToTensor(),
transforms.Normalize((0.4914, 0.4822, 0.4465),
(0.2023, 0.1994, 0.2010)),
])
testset = SVHN(root='./svhn_data',
split='test',
download=True,
transform=transform_test)
test_loader = torch.utils.data.DataLoader(
testset, batch_size=args.test_batch_size, shuffle=False)
elif args.dataset == "Cifar100":
normalize = transforms.Normalize(
mean=[x / 255.0 for x in [125.3, 123.0, 113.9]],
std=[x / 255.0 for x in [63.0, 62.1, 66.7]])
transform_train = transforms.Compose([
transforms.ToTensor(),
transforms.Lambda(lambda x: F.pad(Variable(
x.unsqueeze(0), requires_grad=False), (4, 4, 4, 4),
mode='reflect').data.squeeze()),
transforms.ToPILImage(),
transforms.RandomCrop(32),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
normalize,
])
# data prep for test set
transform_test = transforms.Compose([transforms.ToTensor(), normalize])
# load training and test set here:
training_set = datasets.CIFAR100(root='./cifar100_data',
train=True,
download=True,
transform=transform_train)
train_loader = torch.utils.data.DataLoader(training_set,
batch_size=args.batch_size,
shuffle=True)
testset = datasets.CIFAR100(root='./cifar100_data',
train=False,
download=True,
transform=transform_test)
test_loader = torch.utils.data.DataLoader(
testset, batch_size=args.test_batch_size, shuffle=False)
return train_loader, training_set, test_loader
def load_data(dataset, path, batch_size=64, normalize=False):
if normalize:
# Wasserstein BiGAN is trained on normalized data.
transform = transforms.Compose([
transforms.ToTensor(),
transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5))
])
else:
# BiGAN is trained on unnormalized data (see Dumoulin et al. ICLR 16).
transform = transforms.ToTensor()
if dataset == 'svhn':
train_set = SVHN(path,
split='extra',
transform=transform,
download=True)
val_set = SVHN(path, split='test', transform=transform, download=True)
if dataset == 'stl10':
train_set = STL10(path,
split='train',
transform=transform,
download=True)
val_set = STL10(path, split='test', transform=transform, download=True)
elif dataset == 'cifar10':
train_set = CIFAR10(path,
train=True,
transform=transform,
download=True)
val_set = CIFAR10(path,
train=False,
transform=transform,
download=True)
elif dataset == 'stl10':
train_set = STL10(path,
split='train',
transform=transform,
download=True)
val_set = STL10(path, split='test', transform=transform, download=True)
elif dataset == 'cifar100':
train_set = CIFAR100(path,
train=True,
transform=transform,
download=True)
val_set = CIFAR100(path,
train=False,
transform=transform,
download=True)
elif dataset == 'VOC07':
train_set = VOCSegmentation(path,
image_set='train',
year='2007',
transform=transform,
download=True)
val_set = VOCSegmentation(path,
image_set='val',
year='2007',
transform=transform,
download=True)
elif dataset == 'VOC10':
train_set = VOCSegmentation(path,
image_set='train',
year='2010',
transform=transform,
download=True)
val_set = VOCSegmentation(path,
image_set='val',
year='2010',
transform=transform,
download=True)
train_loader = data.DataLoader(train_set,
batch_size,
shuffle=True,
num_workers=12)
val_loader = data.DataLoader(val_set,
1,
shuffle=False,
num_workers=1,
pin_memory=True)
return train_loader, val_loader
def load_dataset(dataset):
train_transform = T.Compose([
T.RandomHorizontalFlip(),
T.RandomCrop(size=32, padding=4),
T.ToTensor(),
T.Normalize(
[0.4914, 0.4822, 0.4465], [0.2023, 0.1994, 0.2010]
) # T.Normalize((0.5071, 0.4867, 0.4408), (0.2675, 0.2565, 0.2761)) # CIFAR-100
])
test_transform = T.Compose([
T.ToTensor(),
T.Normalize(
[0.4914, 0.4822, 0.4465], [0.2023, 0.1994, 0.2010]
) # T.Normalize((0.5071, 0.4867, 0.4408), (0.2675, 0.2565, 0.2761)) # CIFAR-100
])
if dataset == 'cifar10':
data_train = CIFAR10('../cifar10',
train=True,
download=True,
transform=train_transform)
data_unlabeled = MyDataset(dataset, True, test_transform)
data_test = CIFAR10('../cifar10',
train=False,
download=True,
transform=test_transform)
NO_CLASSES = 10
adden = ADDENDUM
no_train = NUM_TRAIN
elif dataset == 'cifar10im':
data_train = CIFAR10('../cifar10',
train=True,
download=True,
transform=train_transform)
#data_unlabeled = CIFAR10('../cifar10', train=True, download=True, transform=test_transform)
targets = np.array(data_train.targets)
#NUM_TRAIN = targets.shape[0]
classes, _ = np.unique(targets, return_counts=True)
nb_classes = len(classes)
imb_class_counts = [500, 5000] * 5
class_idxs = [np.where(targets == i)[0] for i in range(nb_classes)]
imb_class_idx = [
class_id[:class_count]
for class_id, class_count in zip(class_idxs, imb_class_counts)
]
imb_class_idx = np.hstack(imb_class_idx)
no_train = imb_class_idx.shape[0]
# print(NUM_TRAIN)
data_train.targets = targets[imb_class_idx]
data_train.data = data_train.data[imb_class_idx]
data_unlabeled = MyDataset(dataset[:-2], True, test_transform)
data_unlabeled.cifar10.targets = targets[imb_class_idx]
data_unlabeled.cifar10.data = data_unlabeled.cifar10.data[
imb_class_idx]
data_test = CIFAR10('../cifar10',
train=False,
download=True,
transform=test_transform)
NO_CLASSES = 10
adden = ADDENDUM
no_train = NUM_TRAIN
elif dataset == 'cifar100':
data_train = CIFAR100('../cifar100',
train=True,
download=True,
transform=train_transform)
data_unlabeled = MyDataset(dataset, True, test_transform)
data_test = CIFAR100('../cifar100',
train=False,
download=True,
transform=test_transform)
NO_CLASSES = 100
adden = 2000
no_train = NUM_TRAIN
elif dataset == 'fashionmnist':
data_train = FashionMNIST('../fashionMNIST',
train=True,
download=True,
transform=T.Compose([T.ToTensor()]))
data_unlabeled = MyDataset(dataset, True, T.Compose([T.ToTensor()]))
data_test = FashionMNIST('../fashionMNIST',
train=False,
download=True,
transform=T.Compose([T.ToTensor()]))
NO_CLASSES = 10
adden = ADDENDUM
no_train = NUM_TRAIN
elif dataset == 'svhn':
data_train = SVHN('../svhn',
split='train',
download=True,
transform=T.Compose([T.ToTensor()]))
data_unlabeled = MyDataset(dataset, True, T.Compose([T.ToTensor()]))
data_test = SVHN('../svhn',
split='test',
download=True,
transform=T.Compose([T.ToTensor()]))
NO_CLASSES = 10
adden = ADDENDUM
no_train = NUM_TRAIN
return data_train, data_unlabeled, data_test, adden, NO_CLASSES, no_train
def __init__(self,
base_dataset='cifar10',
take_amount=None,
take_amount_seed=13,
add_svhn_extra=False,
aux_data_filename=None,
add_aux_labels=False,
aux_take_amount=None,
train=False,
**kwargs):
"""A dataset with auxiliary pseudo-labeled data"""
if base_dataset == 'cifar10':
cifar10_path = get_CIFAR10_path()
self.dataset = CIFAR10(root=cifar10_path,
train=train,
transform=kwargs['transform'])
elif base_dataset == 'svhn':
svhn_path = get_svhn_path()
if train:
self.dataset = SVHN(root=svhn_path,
split='train',
transform=kwargs['transform'])
else:
self.dataset = SVHN(root=svhn_path,
split='test',
transform=kwargs['transform'])
# because torchvision is annoying
self.dataset.targets = self.dataset.labels
self.targets = list(self.targets)
if train and add_svhn_extra:
svhn_extra = SVHN(root=svhn_path,
split='extra',
transform=kwargs['transform'])
self.data = np.concatenate([self.data, svhn_extra.data])
self.targets.extend(svhn_extra.labels)
else:
raise ValueError('Dataset %s not supported' % base_dataset)
self.base_dataset = base_dataset
self.train = train
if self.train:
if take_amount is not None:
rng_state = np.random.get_state()
np.random.seed(take_amount_seed)
take_inds = np.random.choice(len(self.sup_indices),
take_amount,
replace=False)
np.random.set_state(rng_state)
logger = logging.getLogger()
logger.info(
'Randomly taking only %d/%d examples from training'
' set, seed=%d, indices=%s', take_amount,
len(self.sup_indices), take_amount_seed, take_inds)
self.targets = self.targets[take_inds]
self.data = self.data[take_inds]
self.sup_indices = list(range(len(self.targets)))
self.unsup_indices = []
if aux_data_filename is not None:
aux_path = os.path.join(kwargs['root'], aux_data_filename)
print("Loading data from %s" % aux_path)
with open(aux_path, 'rb') as f:
aux = pickle.load(f)
aux_data = aux['data']
aux_targets = aux['extrapolated_targets']
orig_len = len(self.data)
if aux_take_amount is not None:
rng_state = np.random.get_state()
np.random.seed(take_amount_seed)
take_inds = np.random.choice(len(aux_data),
aux_take_amount,
replace=False)
np.random.set_state(rng_state)
logger = logging.getLogger()
logger.info(
'Randomly taking only %d/%d examples from aux data'
' set, seed=%d, indices=%s', aux_take_amount,
len(aux_data), take_amount_seed, take_inds)
aux_data = aux_data[take_inds]
aux_targets = aux_targets[take_inds]
self.data = np.concatenate((self.data, aux_data), axis=0)
if not add_aux_labels:
self.targets.extend([-1] * len(aux_data))
else:
self.targets.extend(aux_targets)
# note that we use unsup indices to track the labeled datapoints
# whose labels are "fake"
self.unsup_indices.extend(
range(orig_len, orig_len + len(aux_data)))
logger = logging.getLogger()
logger.info("Training set")
logger.info("Number of training samples: %d", len(self.targets))
logger.info("Number of supervised samples: %d",
len(self.sup_indices))
logger.info("Number of unsup samples: %d", len(self.unsup_indices))
logger.info(
"Label (and pseudo-label) histogram: %s",
tuple(zip(*np.unique(self.targets, return_counts=True))))
logger.info("Shape of training data: %s", np.shape(self.data))
# Test set
else:
self.sup_indices = list(range(len(self.targets)))
self.unsup_indices = []
logger = logging.getLogger()
logger.info("Test set")
logger.info("Number of samples: %d", len(self.targets))
logger.info(
"Label histogram: %s",
tuple(zip(*np.unique(self.targets, return_counts=True))))
logger.info("Shape of data: %s", np.shape(self.data))
def get_svhn(location="./", batch_size=64, labels_per_class=1000, extra=True):
from functools import reduce
from operator import __or__
from torch.utils.data.sampler import SubsetRandomSampler
from torchvision.datasets import SVHN
import torchvision.transforms as transforms
from utils import onehot
std = np.array([0.19653187, 0.19832356, 0.19942404]) # precalulated
std = std.reshape(3, 1, 1)
std = torch.tensor(std).float()
def flatten(x):
x = transforms.ToTensor()(x)
# x += torch.rand(3, 32, 32) / 255.
# x /= std
return x.view(-1)
svhn_train = SVHN(location,
split="train",
download=True,
transform=flatten,
target_transform=onehot(n_labels))
if extra:
svhn_extra = SVHN(location,
split="extra",
download=True,
transform=flatten,
target_transform=onehot(n_labels))
svhn_train = torch.utils.data.ConcatDataset([svhn_train, svhn_extra])
print("Len of svhn train", len(svhn_train))
svhn_valid = SVHN(location,
split="test",
download=True,
transform=flatten,
target_transform=onehot(n_labels))
def uniform_sampler(labels, n=None):
# Only choose digits in n_labels
(indices, ) = np.where(
reduce(__or__, [labels == i for i in np.arange(n_labels)]))
# Ensure uniform distribution of labels
np.random.shuffle(indices)
indices = np.hstack([
list(filter(lambda idx: labels[idx] == i, indices))[:n]
for i in range(n_labels)
])
indices = torch.from_numpy(indices)
sampler = SubsetRandomSampler(indices)
return sampler
def get_sampler(dataset_len, n=None):
# Only choose digits in n_labels
# (indices,) = np.where(reduce(__or__, [labels == i for i in np.arange(n_labels)]))
# Ensure uniform distribution of labels
# np.random.shuffle(indices)
# indices = np.hstack([list(filter(lambda idx: labels[idx] == i, indices))[:n] for i in range(n_labels)])
if n is None:
indices = np.arange(dataset_len)
else:
indices = np.random.choice(dataset_len, size=n * 10, replace=False)
indices = torch.from_numpy(indices)
sampler = SubsetRandomSampler(indices)
return sampler
# Dataloaders for MNIST
labelled = torch.utils.data.DataLoader(svhn_train,
batch_size=batch_size,
num_workers=2,
pin_memory=cuda,
sampler=get_sampler(
len(svhn_train),
labels_per_class))
unlabelled = torch.utils.data.DataLoader(svhn_train,
batch_size=batch_size,
num_workers=2,
pin_memory=cuda)
validation = torch.utils.data.DataLoader(svhn_valid,
batch_size=batch_size,
num_workers=2,
pin_memory=cuda)
return labelled, unlabelled, validation, std
