Targets in DataLoader, ImageFolder is empty

1

Hi,
I use this line of code for looping over my dataset
for batch_idx, (inputs,targets) in enumerate(trainloader)
My dataset is part of imagenet, and I loaded with ImageFolder, but target in here is zero.
Why my labels are not loaded in target?

And here is how I filled it:

    train_dataset = datasets.ImageFolder(
        traindir,
        transforms.Compose([
            transforms.Resize(size=(224, 224)),
            transforms.RandomHorizontalFlip(),
            transforms.ToTensor(),
            normalize,
        ]))

trainloader=torch.utils.data.DataLoader(train_dataset,batch_size=100)

Screenshot%20from%202019-04-01%2021-16-56
Screenshot%20from%202019-04-01%2021-16-561541×558 174 KB

2

trainloader=torch.utils.data.DataLoader(train_dataset,batch_size=100, shuffle=True)
shuffle=True

1 Like
3

Thanks, it worked. Could you please tell me why shuffle was important here?

4

by default, the data is sorted by absolute file name, so the first 1000 images all have label 0

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