test_scan.py 文件源码

def test_map(self):
        v = theano.tensor.vector('v')
        abs_expr, abs_updates = theano.map(
            lambda x: abs(x),
            v,
            [],
            truncate_gradient=-1,
            go_backwards=False)

        f = theano.function([v],
                            abs_expr,
                            updates=abs_updates,
                            allow_input_downcast=True)

        rng = numpy.random.RandomState(utt.fetch_seed())
        vals = rng.uniform(size=(10,), low=-5., high=5.)
        abs_vals = abs(vals)
        theano_vals = f(vals)
        utt.assert_allclose(abs_vals, theano_vals)