Optimize performance using dict
Optimize performance using dict

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