public static float CalculateChebyshevNorm(IEnumerable <Utility> list)
{
var vlist = new List <float>();
var wsum = 0.0f;
foreach (var u in list)
{
wsum += u.Weight;
}
if (CrMath.AeqZero(wsum))
{
return(0.0f);
}
foreach (var el in list)
{
vlist.Add(el.Weight / wsum * el.Value);
}
float res = -10.0f;
foreach (var v in vlist)
{
if (v >= res)
{
res = v;
}
}
return(res);
}
public static float CalculateWeightedMetricsNorm(ICollection <Utility> list, float p = 2.0f)
{
var vlist = new List <float>();
var wsum = 0.0f;
foreach (var u in list)
{
wsum += u.Weight;
}
if (CrMath.AeqZero(wsum))
{
return(0.0f);
}
foreach (var u in list)
{
var v = u.Weight / wsum * (float)Math.Pow(u.Value, p);
vlist.Add(v);
}
var sum = 0.0f;
foreach (var v in vlist)
{
sum += v;
}
return((float)Math.Pow(sum, 1 / p));
}
public void IsZeroTest(
[Range(-2.0f, 2.0f, 0.5f)] float value,
[Range(-2.0f, 2.0f, 0.5f)] float weight)
{
var cValue = value.Clamp01();
var cWeight = weight.Clamp01();
var cResult = CrMath.AeqZero(cValue * cWeight);
var util = new Utility(value, weight);
var aResult = util.IsZero;
Assert.AreEqual(cResult, aResult);
}
public void AeqZeroDoubleTests(double a, bool expected)
{
Assert.That(CrMath.AeqZero(a), Is.EqualTo(expected));
}
public void AeqZeroFloatTests(float a, bool expected)
{
Assert.That(CrMath.AeqZero(a), Is.EqualTo(expected));
}