def test_wrong_dimensions2(self):
X1 = np.linspace(-1, 1, 10)
X2 = np.linspace(-1, 1, 10)
with self.assertRaises(ValueError):
pvml.kernel(X1, X2, "polynomial", 2)
def test_polynomial_kernel(self):
X = np.linspace(-1, 1, 10).reshape(5, 2)
K = pvml.kernel(X, X, "polynomial", 2)
evals = np.linalg.eigvalsh(K)
self.assertGreaterEqual(evals.min(), 0)
def test_unknown_kernel(self):
X = np.linspace(-1, 1, 10).reshape(5, 2)
with self.assertRaises(ValueError):
pvml.kernel(X, X, "unknown", 2)
def test_rbf_kernel(self):
X = np.linspace(-1, 1, 10).reshape(5, 2)
K = pvml.kernel(X, X, "rbf", 1)
self.assertListEqual(np.diag(K).tolist(), [1] * 5)
evals = np.linalg.eigvalsh(K)
self.assertGreaterEqual(evals.min(), 0)