def grad(self, inputs, gout):
        (x, s) = inputs
        (gz,) = gout
        return [col_scale(gz, s), sp_sum(x / gz, axis=0)]
dataset/ETHPy150Open rizar/attention-lvcsr/libs/Theano/theano/sparse/basic.py/ColScaleCSC.grad/operator `*` -> `/`