def test_steepestdescent_lowiterations(): x, y = data.continuous_data_complicated() X = np.column_stack((np.ones(np.shape(x)[0]), x)) weights = descentmethods.steepestdescent(X, y, gradient(), iterations=2) target = [0, 0.4] np.testing.assert_array_almost_equal(weights, target, 1)
def test_steepestdescent_alpha(): x, y = data.continuous_data_complicated() X = np.column_stack((np.ones(np.shape(x)[0]), x)) weights = descentmethods.steepestdescent(X, y, gradient(), alpha=0.001) target = [0.47, 0.84] np.testing.assert_array_almost_equal(weights, target, 1)
def test_gradientdescent_stochastic(): x, y = data.continuous_data_complicated() X = np.column_stack((np.ones(np.shape(x)[0]), x)) weights = descentmethods.gradientdescent(X, y, gradient(), stochastic=True) target = [0.47, 0.84] np.testing.assert_array_almost_equal(weights, target, 1)
def test_gradientdescent_initialweights(): x, y = data.continuous_data_complicated() X = np.column_stack((np.ones(np.shape(x)[0]), x)) weights = descentmethods.gradientdescent(X, y, gradient(), initial_weights=np.array([0.2, 0.2])) target = [0.47, 0.84] np.testing.assert_array_almost_equal(weights, target, 1)
def test_newtonsmethod_alpha(): x, y = data.continuous_data_complicated() X = np.column_stack((np.ones(np.shape(x)[0]), x)) weights = descentmethods.newtonsmethod(X, y, gradient(), hessian(), alpha=0.001) target = [0.3, 0.5] np.testing.assert_array_almost_equal(weights, target, 1)
def test_gradientdescent_initialweights(): x, y = data.continuous_data_complicated() X = np.column_stack((np.ones(np.shape(x)[0]), x)) weights = descentmethods.gradientdescent(X, y, gradient(), initial_weights=np.array( [0.2, 0.2])) target = [0.47, 0.84] np.testing.assert_array_almost_equal(weights, target, 1)
def test_newtonsmethod_lowiterations(): x, y = data.continuous_data_complicated() X = np.column_stack((np.ones(np.shape(x)[0]), x)) weights = descentmethods.newtonsmethod(X, y, gradient(), hessian(), iterations=2) target = [0, 0] np.testing.assert_array_almost_equal(weights, target, 1)
def test_kerneldensityestimate(): x, y = data.continuous_data_complicated() km = kernelmethods.KernelMethods() km.fit(x, y) kde = km.kerneldensityestimate([5], 1) np.testing.assert_almost_equal(kde, 0)
def test_locallinearregression(): x, y = data.continuous_data_complicated() km = kernelmethods.KernelMethods() km.fit(x, y) predict = km.locallinearregression(5.5, km.gaussiankernel, 0.1) np.testing.assert_almost_equal(predict, 5.092, 2)
def test_nadarayaaverage(): x, y = data.continuous_data_complicated() km = kernelmethods.KernelMethods() km.fit(x, y) predict = km.nadarayaaverage(5.5, km.gaussiankernel, 0.01) np.testing.assert_almost_equal(predict, 4.237, 2)
def test_kernelmethods_fit(): x, y = data.continuous_data_complicated() km = kernelmethods.KernelMethods() km.fit(x, y) assert km.learned