def test_grad_Z2(): """ Test of implementation 2 of gradient. """ traj = simple_traj2() theta = np.array([0.0, -1.0]) choices = [0, 1] elts = LearningElements(traj, theta, choices) elts.computeGradientLogZ() elts_ref = LearningElementsRef(traj, theta, choices) elts_ref.computeGradientLogZ() g = elts.grad_logZ g_ref = elts_ref.grad_logZ assert(np.abs(g - g_ref).max() < 1e-3), (g, g_ref)
