Python spd_inv_sqrt Beispiele

Beispiel #1

def test_spd_inv_sqrt(spd_matrix, epsilon, method, return_rank):
    M = spd_inv_sqrt(spd_matrix,
                     epsilon=epsilon,
                     method=method,
                     return_rank=return_rank)
    if return_rank:
        rank = M[1]
        M = M[0]

        assert_equal(rank, 3)

    assert_array_almost_equal(M @ M.T, spd_inv(spd_matrix))

Beispiel #2

def test_spd_inv_sqrt_1d():
    W = np.array([[.5]])
    assert_almost_equal(spd_inv_sqrt(W).squeeze(), 1. / np.sqrt(.5))

    with assert_raises(ZeroRankError):
        spd_inv_sqrt(np.array([[.001]]), epsilon=.01)