About data set use instruction

in this dataset, there are three folder. birds animal and furniture. each folder has 5 subfolder.
i made a project that can classify image into 3 folder. how can i classify the subfolder also. please help me.

Torch.datasets.ImageFolder() can not detect subfolders for classification. You can do one thing, just copy all folders into a single folder using cp command.
Another way of doing the same is creating custom datasets using torch.datasets, Follow the link below to create custom dataset in pytorch.