/
data_loader.py
200 lines (169 loc) · 7.96 KB
/
data_loader.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
import numpy as np
import torch
from torchvision import datasets
from torchvision import transforms
from torch.utils.data import Subset
from norb import smallNORBViewPoint, smallNORB
from aff_nist import affNIST
def get_train_valid_loader(data_dir,
dataset,
batch_size,
random_seed,
exp='azimuth',
valid_size=0.1,
shuffle=True,
num_workers=0,
pin_memory=False):
data_dir = data_dir + '/' + dataset
if dataset == "cifar10":
trans = [transforms.RandomCrop(32, padding=4),
transforms.RandomHorizontalFlip(0.5),
transforms.ToTensor(),
transforms.Normalize((0.4914, 0.4822, 0.4465), (0.2023, 0.1994, 0.2010))]
dataset = datasets.CIFAR10(data_dir, train=True, download=True,
transform=transforms.Compose(trans))
#a=2
elif dataset == "svhn":
normalize = transforms.Normalize(mean=[x / 255.0 for x in[109.9, 109.7, 113.8]],
std=[x / 255.0 for x in [50.1, 50.6, 50.8]])
trans = [transforms.RandomCrop(32, padding=4),
transforms.ToTensor(),
normalize]
dataset = datasets.SVHN(data_dir, split='train', download=True,
transform=transforms.Compose(trans))
elif dataset == "smallnorb":
trans = [transforms.Resize(48),
transforms.RandomCrop(32),
transforms.RandomHorizontalFlip(0.5),
transforms.RandomVerticalFlip(0.5),
transforms.ColorJitter(brightness=32./255, contrast=0.3),
transforms.ToTensor(),
transforms.Normalize((0.7199,), (0.117,))
]
if exp in VIEWPOINT_EXPS:
train_set = smallNORBViewPoint(data_dir, exp=exp, train=True, download=True,
transform=transforms.Compose(trans))
trans = trans[:1] + [transforms.CenterCrop(32)] +trans[3:]
valid_set = smallNORBViewPoint(data_dir, exp=exp, train=False, familiar=False, download=False,
transform=transforms.Compose(trans))
elif exp == "full":
dataset = smallNORB(data_dir, train=True, download=True,
transform=transforms.Compose(trans))
elif dataset =="cifar100":
trans = [
transforms.Pad(4, padding_mode='reflect'),
transforms.RandomHorizontalFlip(),
transforms.RandomCrop(32),
transforms.ToTensor(),
transforms.Normalize(
np.array([125.3, 123.0, 113.9]) / 255.0,
np.array([63.0, 62.1, 66.7]) / 255.0),
]
dataset = datasets.CIFAR100(data_dir, train=True, download=True,
transform=transforms.Compose(trans))
elif dataset == "fashionmnist":
trans = [transforms.ToTensor(),
transforms.Normalize((0.1307,), (0.3081,))
]
dataset = datasets.FashionMNIST(data_dir, train=True, download=True,
transform=transforms.Compose(trans))
elif dataset == 'Affnist':
trans = [#transforms.Resize(32),
transforms.ToTensor(),
# transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5))
]
dataset = affNIST(data_dir, is_Train=True, transform=transforms.Compose(trans))
elif dataset == 'mnist':
trans =[transforms.RandomCrop(32, padding=4),
transforms.RandomHorizontalFlip(0.5),
transforms.ToTensor(),
transforms.Normalize((0.1307,), (0.3081,))]
dataset = datasets.MNIST(data_dir, train=True, download=True,transform=transforms.Compose(trans))
if exp not in VIEWPOINT_EXPS:
num_train = len(dataset)
indices = list(range(num_train))
split = int(np.floor(valid_size * num_train))
if shuffle:
np.random.seed(random_seed)
np.random.shuffle(indices)
train_idx = indices[split:]
valid_idx = indices[:split]
train_set = Subset(dataset, train_idx)
valid_set = Subset(dataset, valid_idx)
train_loader = torch.utils.data.DataLoader(
train_set, batch_size=batch_size, shuffle=True,
num_workers=num_workers, pin_memory=pin_memory,
)
valid_loader = torch.utils.data.DataLoader(
valid_set, batch_size=batch_size, shuffle=False,
num_workers=num_workers, pin_memory=pin_memory,
)
return train_loader, valid_loader
def get_test_loader(data_dir,
dataset,
batch_size,
exp='azimuth',
familiar=True,
num_workers=4,
pin_memory=False):
data_dir = data_dir + '/' + dataset
if dataset == "cifar10":
trans = [transforms.ToTensor(),
transforms.Normalize((0.4914, 0.4822, 0.4465), (0.2023, 0.1994, 0.2010))]
dataset = datasets.CIFAR10(data_dir, train=False, download=False,
transform=transforms.Compose(trans))
elif dataset == "svhn":
normalize = transforms.Normalize(mean=[x / 255.0 for x in[109.9, 109.7, 113.8]],
std=[x / 255.0 for x in [50.1, 50.6, 50.8]])
trans = [transforms.ToTensor(),
normalize]
dataset = datasets.SVHN(data_dir, split='test', download=True,
transform=transforms.Compose(trans))
elif dataset == "smallnorb":
trans = [transforms.Resize(48),
transforms.CenterCrop(32),
transforms.ToTensor(),
transforms.Normalize((0.7199,), (0.117,))
]
if exp in VIEWPOINT_EXPS:
dataset = smallNORBViewPoint(data_dir, exp=exp, familiar=familiar, train=False, download=True,
transform=transforms.Compose(trans))
elif exp == "full":
dataset = smallNORB(data_dir, train=False, download=True,
transform=transforms.Compose(trans))
elif dataset == "cifar100":
trans = [transforms.ToTensor(),
transforms.Normalize(np.array([125.3, 123.0, 113.9]) / 255.0,
np.array([63.0, 62.1, 66.7]) / 255.0),
]
dataset = datasets.CIFAR100(data_dir, train=True, download=True,
transform=transforms.Compose(trans))
elif dataset == "fashionmnist":
trans = [transforms.ToTensor(),
transforms.Normalize((0.1307,), (0.3081,))
]
dataset = datasets.FashionMNIST(data_dir, train=True, download=True,
transform=transforms.Compose(trans))
elif dataset == "mnist":
trans = [transforms.Resize(32),
transforms.ToTensor(),
transforms.Normalize((0.1307,), (0.3081,)),
#transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5))
]
#dataset = affNIST('/home/zhao/CR/datasets/data/Affnist', is_Train=False, transform=transforms.Compose(trans))
dataset = datasets.MNIST(data_dir, train=False, download=True, transform=transforms.Compose(trans))
data_loader = torch.utils.data.DataLoader(
dataset, batch_size=batch_size, shuffle=False,
num_workers=num_workers, pin_memory=pin_memory,
)
return data_loader
DATASET_CONFIGS = {
'cifar10': {'size': 32, 'channels': 3, 'classes': 10},
'svhn': {'size': 32, 'channels': 3, 'classes': 10},
'smallnorb': {'size': 32, 'channels': 1, 'classes': 5},
'cifar100': {'size':32, 'channels': 3, 'classes': 100},
'fashionmnist':{'size':28, 'channels':1, 'classes':10},
'Affnist':{'size':40, 'channels':1, 'classes':10},
'mnist':{'size':28, 'channels':1,'classes':10},
}
VIEWPOINT_EXPS = ['azimuth', 'elevation']