def test_b_j_composed_of_one_summand_if_only_one_relevant_pair(self):
res = b_j(
f=self.default_f,
j=2,
comparisons=a([
[0, 2],
]),
sigma=self.default_sigma,
)
self.assertAlmostEqual(res, -.056317811)
def test_b_j_is_zero_when_no_comparisons_contain_j(self):
res = b_j(
f=self.default_f,
j=1,
comparisons=a([
[0, 2],
[2, 0],
]),
sigma=self.default_sigma,
)
self.assertAlmostEqual(res, 0.0)
def test_b_j_made_up_of_multiple_terms_if_j_in_multiple_comparisons(self):
res = b_j(
f=self.default_f,
j=2,
comparisons=a([
[0, 2],
[2, 1],
]),
sigma=self.default_sigma,
)
self.assertAlmostEqual(res, .151312099)