Kulczynski2 { public static double distance(double[] v1,double[] v2){ Asserts.assertEqualLength(v1, v2); Asserts.assertGreaterOrEqualThanValue(v1, 0); Asserts.assertGreaterOrEqualThanValue(v2, 0); Asserts.assertHasAllZeros(v1); Asserts.assertHasAllZeros(v2); double sum = 0; double promV1 = 0; double promV2 = 0; for(int i=0;i<v1.length;i++){ promV1 += v1[i]; promV2 += v2[i]; sum += CommonStats.min(v1[i], v2[i]); } promV1 /= v1.length; promV2 /= v1.length; return (((double)v1.length/2)*((1/promV1)+(1/promV2))*sum); }  static double distance(double[] v1,double[] v2);  }
@Test public void test1(){ double[] v1 = new double[]{8,3,7}; double[] v2 = new double[]{9,8,4}; double res = Kulczynski2.distance(v1, v2); Asserts.assertEquals(res, 6.96428571428571); }
@Test public void test2(){ double[] v1 = new double[]{8,32,7,0,45}; double[] v2 = new double[]{97,78,41,4,78}; double res = Kulczynski2.distance(v1, v2); Asserts.assertEquals(res, 16.35906040268456); }
@Test public void test3(){ double[] v1 = new double[]{248.124,321.574,788.14,0.001,459.298}; double[] v2 = new double[]{97.145,78.658,417.0004,4.02,7865.3594}; double res = Kulczynski2.distance(v1, v2); Asserts.assertEquals(res, 8.79148678732043); }