relfect review comments
relfect review comments

- data = self.array to array = self.array

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