def grad(self, inputs, gout):
        (x, y) = inputs
        (gz,) = gout
        assert _is_sparse_variable(x) and _is_sparse_variable(y)
        assert _is_sparse_variable(gz)
        return gz, gz
dataset/ETHPy150Open rizar/attention-lvcsr/libs/Theano/theano/sparse/basic.py/AddSS.grad/original