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MNIST???g???ăI?[?g?G???R?[?_?[?ɂ??ُ팟?m???????Ă݂悤?F????Ď??????I?@?f?B?[?v???[?j???O?H?쎺?i1/3 ?y?[?W?j
?I?[?g?G???R?[?_?[?̊??p??̈?ł???ُ팟?m???AMNIST?̎菑?????????ɑ̌????Ă݂܂??傤?B
???̋L???͉??????ł??B????o?^?i?????j????ƑS?Ă????????????܂??B
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?@?O???܂łɑS?????^?̃I?[?g?G???R?[?_?[?ACNN?𗘗p??????ݍ??݃I?[?g?G???R?[?_?[?A???ꂩ??w?K???????ɍs????悤??GPU???g?p??????@?Ȃǂ????Ă??܂????B
?@?Ƃ???ŁA?I?[?g?G???R?[?_?[?????G???R?[?_?[?Ō??摜???k???i?????팸?j???āA??????f?R?[?_?[?ŕ??????邱?Ƃ͂ǂ?Ȃ??ƂŖ??ɗ??̂ł??傤???B??ʂɂُ͈팟?m??m?C?Y?팸?Ȃǂ??I?[?g?G???R?[?_?[?̗p?r?Ƃ??ċ??????Ă??܂??B?????ŁA????́AMNIST?̎菑?????????Ɉُ팟?m?Ƃ͂ǂ?Ȃ??̂Ȃ̂??A???̖{???ɕ\?ʓI?ȕ????????????Ă݂邱?Ƃɂ??܂??B
?@?u?ُ팟?m?v?Ƃ́A???????̃f?[?^?̒?????A???̃f?[?^?Ƃ͈قȂ?????????f?[?^???????o?????Ƃł??B?Ⴆ?A?H??Ő??Y???ꂽ?l?W???l???Ă݂܂??傤?B???????ꂽ?l?W?̑????͉??̖????Ȃ??A???i?Ƃ??ďo?ׂł?????̂ł??B???????A???̒??̂????ꕔ?ɂ́A????????????A??[???Ȃ????Ă?????ƁA???i?Ƃ??Ă͏o?ׂł??Ȃ????̂??܂܂?Ă??邩??????܂???B?E?l?I?ȋZ?p?????l?̖ڂ???A???̂悤?Ȉُ???????̂??ȒP?Ɍ??????邩??????܂??A?ُ팟?m???g?????ƂŁA???????@?B?I?ɔ????o????悤?ɂȂ?ł??傤?B???̂??߂ɃI?[?g?G???R?[?_?[???g????Ƃ??????Ƃł??B
?@?F????́u?ꗬ?̊Ӓ?l?͐??܂ꂽ?Ƃ?????z?????m??????ڂɂ??Ă??Ă???̂ŁA?j?Z???m???????Ƃ??ɂ͂??ꂪ?????ɕ?????v?̂悤?ȈӖ??̌??t???????Ƃ?????܂??B?M?҂̓}???K?⏬???ŁA?????????Z???t??o??l?????b???Ƃ???????x???ǂ??Ƃ?????܂??B?܂?A?u????ȃ??m???????w?K?????Ă???A?ُ?ȃ??m???????ɕ?????v?悤?ɂȂ?Ƃ????킯?ł??B
?@?}???K?⏬?????????ɂ???ȂƓ{??ꂻ???ł????A?I?[?g?G???R?[?_?[?ɂ??ُ팟?m?͂???ɋ߂????̂?????܂??B?܂?A?I?[?g?G???R?[?_?[?ɐ???ȃf?[?^????????͂??Ċw?K???s???A????ȃf?[?^?????͂????A????͖??Ȃ??????ł??邯?ǁA?ُ?ȃf?[?^?????͂??ꂽ?Ƃ??ɂ́A???܂??????ł??Ȃ????̂ɂȂ邾?낤?Ƃ????̂???{?̍l?????Ƃ?????ł??傤?B
?@?Ƃ͂????A???ۂɂ̓l?W?ɕt?????????̃L?Y?????m????悤?ȃj???[?????l?b?g???[?N???f???????̂́A?????????ȒP?Ȃ??Ƃł͂???܂???B???̌??e???????O?ɁuMVTec Anomaly Detection Dataset?v?ƌĂ??f?[?^?Z?b?g???g???Ď????Ă????̂ł????A?????????j???[?????l?b?g???[?N?Ƃ͂Ȃ?Ȃ????????߁A?????ł͊?{?ɗ????Ԃ???MNIST???Ƃ??āA?ُ팟?m???ǂ?Ȃ??̂??????Ă݂邱?ƂɂȂ????̂ł????B
?@?????ł͈ȉ??̂悤?Ȏ??????s???Ă݂܂??B
- MNIST?̎菑???????̂????A?u1?v?ɕ??ނ??????̂𐳏?ȃf?[?^?Ƃ??āA?I?[?g?G???R?[?_?[?Ɋw?K?????
- ?w?K???I???????A?u1?v?Ɓu8?v???????܂ރe?X?g?f?[?^???I?[?g?G???R?[?_?[?ɓ??͂??Ă݂?
- ?????̕????摜???m?F????
?@?????S?????^?̃I?[?g?G???R?[?_?[?Ə?ݍ??݃I?[?g?G???R?[?_?[?Ŏ????Ă݂܂??BMNIST?Ȃ?S?????^?̃I?[?g?G???R?[?_?[?ł??\?????낤?Ƃ????l???ƁA??荂?????x?ʼn摜?̕??????ł????ݍ??݃G???R?[?_?[?ł͂ǂ??Ȃ邩?????Ă݂悤?ƍl????????ł??B
?@?Ȃ??A?u1?v?𐳏?ȃf?[?^?̗?Ƃ??āA?u8?v???ُ?ȃf?[?^?̗?Ƃ??????Ƃ????ƁA?????ڂɂ????͑傫???قȂ??Ă??邩??ł??B?܂?A????ƈُ?̍???傫????邱?ƂŁA?ُ?ȃf?[?^???i?ȑf?ȃj???[?????l?b?g???[?N???f???ł??j???o???₷?????悤?ƍl?????Ƃ????킯?ł??B
?@?????̃R?[?h?i?K?v?ȃ??W???[???̃C???|?[?g?Aimshow???^AutoEncoder?N???X?^train???̒?`?Ȃǁj?͖{?e?????ɂ܂Ƃ߂܂??B?܂??A????̃R?[?h?????̃m?[?g?u?b?N?Ō??J???Ă???̂ŁA?K?v?ɉ????ĎQ?l?ɂ??Ă????????B
?@????ł͊w?K?̂??߂̏????Ƃ????܂??傤?B
?w?肳?ꂽ?????????ō\???????MNIST?̃T?u?Z?b?g?????
?@???ɏq?ׂ??ʂ?A????p?ӂ???̂́A????2?̃f?[?^?Z?b?g?ł??B
- MNIST?̎菑???????̂????u1?v???????܂ރf?[?^?Z?b?g?i?P???f?[?^?j
- MNIST?̎菑???????̂????u1?v?Ɓu8?v???????܂ރf?[?^?Z?b?g?i?e?X?g?f?[?^?j
?@PyTorch???W???Œ??Ă???MNIST?N???X?́A?f?[?^?Z?b?g?̃_?E?????[?h???s???Ă????֗??ȃN???X?ł????A???̓????ɂ́u0?v?`?u9?v?̑S?Ă̕??????܂܂?Ă??܂??܂??B???̂܂܂ł͎g???Ȃ??̂ŁA?????ł?MNIST?N???X???p?????鎟?̂悤?ȃN???X??p?ӂ??܂????B
class MNISTNumed(MNIST):
def __init__(self, nums=[1], *args, **kwargs):
super().__init__(*args, **kwargs)
tmp = []
for n in nums:
subdata= [d for d, t in zip(self.data, self.targets) if t == n]
tmp.extend(subdata)
self.data = tmp
#self.data = [d for d, t in zip(self.data, self.targets) for n in nums if t == n]
?@???????w?肷??Ƃ??????Ƃ???uMNISTNumed?v?Ƃ??????O?ɂ??܂??????A???܂?悢???O?t???ł͂Ȃ?????????܂???B????͂Ƃ??????A???̃N???X??__init__???\?b?h???ŁA?p?????[?^?[nums?Ɏw?肳?ꂽ???l????ɁAself.data?i?w?K???ȂǂɃf?[?^?Z?b?g??????f?[?^?j?̓??e???t?B???^?????O???邾???ŁA??͊??N???X?ł???MNIST?ɑS?Ă?C???Ă??邾???ł??iforward???\?b?h?????`???Ă??܂???ˁj?B
?@?p?????[?^?[nums?ɂ̓??X?g?Ƃ??āA?f?[?^?Z?b?g?Ɋ܂߂????????i???l?j???w?肵?Ă??炤???Ƃ?O??Ƃ??Ă??܂??B?????āAfor???ƃ??X?g????\?L???g???āA?w?肳?ꂽ??????????self.data?Ɋ܂܂??悤?ɂ??Ă??܂??B?R?????g?s?̓??X?g????\?L?????ŁA???????Ƃ?????R?[?h???Ƃ??ď????Ă???܂??B?????̂?????͂?????̃R?[?h???????Ă݂Ă????????B
?@???̃N???X???g???āA?P???Z?b?g?ƃe?X?g?Z?b?g?A?????̃f?[?^???[?_?[???`????̂????̃R?[?h?ł??B
transform = transforms.Compose([transforms.ToTensor(),
transforms.Normalize((0.5, ), (0.5))])
trainset = MNISTNumed(root='./data', nums=[1], train=True, transform=transform, download=True)
trainloader = DataLoader(trainset, batch_size=16, shuffle=True)
testset = MNISTNumed(root='./data', nums=[1, 8], train=False, transform=transform, download=True)
testloader = DataLoader(testset, batch_size=16, shuffle=True)
?@MNIST?N???X?ł͂Ȃ??AMNISTNumed?N???X???g???Ƃ???ȊO?́A????܂łƓ??l?Ȃ̂ŁA?????͂??Ȃ??Ă??悢?ł??傤?B
?@???ۂɁu1?v?????A?܂??́u1?v?Ɓu8?v???????܂܂?Ă??邩???m?F???Ă????܂??傤?B
iterator = iter(trainloader) # ?P???f?[?^?i?u1?v?݂̂??܂ށj
img, _ = next(iterator)
imshow(img)
iterator = iter(testloader) # ?e?X?g?f?[?^?i?u1?v?Ɓu8?v???܂ށj
img, _ = next(iterator)
imshow(img)
?@???s???ʂ͈ȉ??̒ʂ?ł??B
???s?????@?P???f?[?^?ɂ́u1?v???????A?e?X?g?f?[?^?ɂ́u1?v?Ɓu8?v???܂܂?Ă??邱?Ƃ??m?F?ł??܂????i?Ȃ??A?u1?v?Ɓu8?v???????_???ɓo?ꂷ??悤?ɁA????̓e?X?g???[?_?[?ł͓ǂݍ??ݏ????V???b?t???????悤?ɂ??Ă???܂??j?B
?@?????͂???Ŋ????ł??B???y?[?W?ł́A?S?????^?̃I?[?g?G???R?[?_?[?ňُ?????m?ł??邩?ǂ????A?????Ă݂邱?Ƃɂ??܂??B
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