def test_gradient(self):
val = np.random.random((4, 2))
xth = KTH.variable(val)
xtf = KTF.variable(val)
expth = xth * KTH.exp(xth)
exptf = xtf * KTF.exp(xtf)
lossth = KTH.sum(expth)
losstf = KTF.sum(exptf)
zero_lossth = KTH.stop_gradient(lossth)
zero_losstf = KTF.stop_gradient(losstf)
gradth = KTH.gradients(lossth, [expth])
gradtf = KTF.gradients(losstf, [exptf])
zero_gradth = KTH.gradients(lossth + zero_lossth, [expth])
zero_gradtf = KTF.gradients(losstf + zero_losstf, [exptf])
zth = KTH.eval(gradth[0])
ztf = KTF.eval(gradtf[0])
zero_zth = KTH.eval(zero_gradth[0])
zero_ztf = KTF.eval(zero_gradtf[0])
assert zth.shape == ztf.shape
assert zero_zth.shape == zero_ztf.shape
assert_allclose(zth, ztf, atol=1e-05)
assert_allclose(zero_zth, zero_ztf, atol=1e-05)
assert_allclose(zero_zth, zth, atol=1e-05)
assert_allclose(zero_ztf, ztf, atol=1e-05)
def test_gradient(self):
val = np.random.random((4, 2))
xth = KTH.variable(val)
xtf = KTF.variable(val)
expth = xth * KTH.exp(xth)
exptf = xtf * KTF.exp(xtf)
lossth = KTH.sum(expth)
losstf = KTF.sum(exptf)
zero_lossth = KTH.stop_gradient(lossth)
zero_losstf = KTF.stop_gradient(losstf)
gradth = KTH.gradients(lossth, [expth])
gradtf = KTF.gradients(losstf, [exptf])
zero_gradth = KTH.gradients(lossth + zero_lossth, [expth])
zero_gradtf = KTF.gradients(losstf + zero_losstf, [exptf])
zth = KTH.eval(gradth[0])
ztf = KTF.eval(gradtf[0])
zero_zth = KTH.eval(zero_gradth[0])
zero_ztf = KTF.eval(zero_gradtf[0])
assert zth.shape == ztf.shape
assert zero_zth.shape == zero_ztf.shape
assert_allclose(zth, ztf, atol=1e-05)
assert_allclose(zero_zth, zero_ztf, atol=1e-05)
assert_allclose(zero_zth, zth, atol=1e-05)
assert_allclose(zero_ztf, ztf, atol=1e-05)
