private double CalculateSuperiorityIdentifier(
AlternativeBase lhs,
AlternativeBase rhs)
{
double result = 0;
for (int i = 0; i < _alternatives.Criterias.Count; ++i)
{
var criteria = _alternatives.Criterias[i];
var lhs_value = lhs.Values[i].Value;
var rhs_value = rhs.Values[i].Value;
if (criteria is IQualitativeCriteria)
{
if (lhs_value >= rhs_value)
{
result += _configuration.CriteriaRanks[i];
}
}
else
{
if (criteria.CriteriaDirection == CriteriaDirectionType.Maximization &&
lhs_value >= rhs_value)
{
result += _configuration.CriteriaRanks[i];
}
if (criteria.CriteriaDirection == CriteriaDirectionType.Minimization &&
lhs_value <= rhs_value)
{
result += _configuration.CriteriaRanks[i];
}
}
}
return(result);
}
double PreferenceIndex(AlternativeBase lhs, AlternativeBase rhs)
{
double result = 0;
for (int i = 0; i < lhs.Values.Count; ++i)
{
if (_alternatives.Criterias[i] is CriteriaBase)
{
result +=
_configuration.PreferenceFunctions[i].GetValue(
_alternatives.Criterias[i].CriteriaDirection == CriteriaDirectionType.Maximization ? lhs.Values[i].Value - rhs.Values[i].Value : rhs.Values[i].Value - lhs.Values[i].Value
) * _configuration.CriteriaRanks[i];
}
else
{
result += _configuration.PreferenceFunctions[i].GetValue(lhs.Values[i].Value - rhs.Values[i].Value) * _configuration.CriteriaRanks[i];
}
}
return(result);
}