usps.py 文件源码

def get_usps(train):
    """Get USPS dataset loader."""
    # image pre-processing
    pre_process = transforms.Compose([transforms.ToTensor(),
                                      transforms.Normalize(
                                          mean=params.dataset_mean,
                                          std=params.dataset_std)])

    # dataset and data loader
    usps_dataset = USPS(root=params.data_root,
                        train=train,
                        transform=pre_process,
                        download=True)

    usps_data_loader = torch.utils.data.DataLoader(
        dataset=usps_dataset,
        batch_size=params.batch_size,
        shuffle=True)

    return usps_data_loader