def test_RidgeLinearRegression_cost_data2_1(self, data2):
y = data2[:, -1:]
X = data2[:, :-1]
_, n = X.shape
theta = ones((n + 1, 1), dtype=float64)
lr = RidgeLinearRegression(theta, _lambda=0)
assert_allclose([[64828197300.798]], lr.cost(X, y), rtol=0, atol=0.001)
def test_RidgeLinearRegression_cost_data1_2(self, data1):
y = data1[:, -1:]
X = data1[:, :-1]
_, n = X.shape
theta = ones((n + 1, 1), dtype=float64)
lr = RidgeLinearRegression(theta, _lambda=100)
assert_allclose([[10.781984]], lr.cost(X, y), rtol=0, atol=0.001)