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USPS

class torchvision.datasets.USPS(root: str, train: bool = True, transform: Optional[Callable] = None, target_transform: Optional[Callable] = None, download: bool = False)[source]

USPS Dataset. The data-format is : [label [index:value ]*256 n] * num_lines, where label lies in [1, 10]. The value for each pixel lies in [-1, 1]. Here we transform the label into [0, 9] and make pixel values in [0, 255].

Parameters
  • root (string) – Root directory of dataset to store``USPS`` data files.

  • train (bool, optional) – If True, creates dataset from usps.bz2, otherwise from usps.t.bz2.

  • transform (callable, optional) – A function/transform that takes in an PIL image and returns a transformed version. E.g, transforms.RandomCrop

  • target_transform (callable, optional) – A function/transform that takes in the target and transforms it.

  • download (bool, optional) – If true, downloads the dataset from the internet and puts it in root directory. If dataset is already downloaded, it is not downloaded again.

Special-members

__getitem__(index: int)Tuple[Any, Any][source]
Parameters

index (int) – Index

Returns

(image, target) where target is index of the target class.

Return type

tuple

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