use broadcast_arrays instead of broadcast_to
use broadcast_arrays instead of broadcast_to

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