Align the argument names with ImageDataset
Align the argument names with ImageDataset

cupy/cupy,pfnet/chainer,okuta/chainer,kiyukuta/chainer,niboshi/chainer,keisuke-umezawa/chainer,chainer/chainer,chainer/chainer,ysekky/chainer,jnishi/chainer,kikusu/chainer,cupy/cupy,niboshi/chainer,ronekko/chainer,ktnyt/chainer,ktnyt/chainer,hvy/chainer,delta2323/chainer,niboshi/chainer,jnishi/chainer,keisuke-umezawa/chainer,wkentaro/chainer,cupy/cupy,okuta/chainer,kikusu/chainer,chainer/chainer,keisuke-umezawa/chainer,niboshi/chainer,ktnyt/chainer,aonotas/chainer,rezoo/chainer,kashif/chainer,keisuke-umezawa/chainer,cupy/cupy,tkerola/chainer,jnishi/chainer,ktnyt/chainer,chainer/chainer,wkentaro/chainer,wkentaro/chainer,okuta/chainer,wkentaro/chainer,hvy/chainer,jnishi/chainer,hvy/chainer,okuta/chainer,anaruse/chainer,hvy/chainer