def test_ktau_relative_distances(): """Compares relative distances of weighted rankings""" r1 = [0.05, 0.2, 0.7, 0.05] r2 = [0.23, 0.24, 0.26, 0.27] r3 = [0.22, 0.24, 0.26, 0.28] # r2 and r3 should be closer than r2 to r1 assert ktau_weighted_distance(r2, r3) < ktau_weighted_distance(r2, r1)
def test_ktau_symmetry(): """Checks symmetry holds for distance metric""" r1 = [0.1, 0.2, 0.7] assert ktau_weighted_distance(r1, r1) == 0
def test_ktau_accuracy(): """ Floating point accuracy test for testing faster calculation methods """ r1 = [0.27, 0.24, 0.26, 0.23] r2 = [0.05, 0.2, 0.7, 0.05] assert ktau_weighted_distance(r1, r2) == 0.0031050000000000006 assert mergeSortDistance(r1, r2) == 0.0031050000000000006