test_opt.py 文件源码

def test_kording_bug(self):
        x, y = vectors('xy')
        eps = scalar('eps')
        s = scalar('s')

        #r = theano.tensor.mul(theano.tensor.fill(x, 2.*a), x/a , (y+z) , a)
        #r = theano.tensor.mul((x/a+y) , a, z)
        r = tensor.mul(s - 1,
                       eps + x / s,
                       eps + y / s,
                       s)

        f = function([s, eps, x, y], r ** 2)

        s_val = numpy.asarray(4, dtype=config.floatX)
        eps_val = numpy.asarray(1.e-6, dtype=config.floatX)
        x_val = numpy.asarray([1.5, 2], dtype=config.floatX)
        y_val = numpy.asarray([2.3, 3.1], dtype=config.floatX)

        r0 = f(s_val, eps_val, x_val, y_val)
        r1 = f(s_val, eps_val, x_val, y_val)
        r2 = f(s_val, eps_val, x_val, y_val)

        assert numpy.all(r0 == r1)
        assert numpy.all(r0 == r2)