Shorter and consistent variable name
Shorter and consistent variable name

okuta/chainer,okuta/chainer,keisuke-umezawa/chainer,wkentaro/chainer,niboshi/chainer,okuta/chainer,jnishi/chainer,hvy/chainer,hvy/chainer,ktnyt/chainer,jnishi/chainer,keisuke-umezawa/chainer,keisuke-umezawa/chainer,wkentaro/chainer,ktnyt/chainer,hvy/chainer,niboshi/chainer,niboshi/chainer,wkentaro/chainer,pfnet/chainer,niboshi/chainer,chainer/chainer,hvy/chainer,ktnyt/chainer,chainer/chainer,jnishi/chainer,keisuke-umezawa/chainer,wkentaro/chainer,okuta/chainer,ktnyt/chainer,jnishi/chainer,chainer/chainer,tkerola/chainer,chainer/chainer