private void Defuzzify()
{
Dictionary <FuzzyContext.Variable, List <KeyValuePair <FuzzySet, FuzzyValue> > > setsByVariable = new Dictionary <FuzzyContext.Variable, List <KeyValuePair <FuzzySet, FuzzyValue> > >();
foreach (var setKv in context.inferedResult.GetSets())
{
if (!setsByVariable.ContainsKey(setKv.Key.GetVariable()))
{
setsByVariable.Add(setKv.Key.GetVariable(), new List <KeyValuePair <FuzzySet, FuzzyValue> >());
}
setsByVariable[setKv.Key.GetVariable()].Add(setKv);
}
foreach (var varKV in setsByVariable)
{
FuzzyContext.Variable variable = varKV.Key;
float min = float.MaxValue;
float max = float.MinValue;
foreach (var setKv in varKV.Value)
{
min = Mathf.Min(min, setKv.Key.GetMembershipFunction().GetMinCrispValue());
max = Mathf.Max(max, setKv.Key.GetMembershipFunction().GetMaxCrispValue());
}
float step = (max - min) / 100.0f;
float numerator = 0.0f;
float denominator = 0.0f;
for (float x = min; x <= max; x += step)
{
float maxMembership = 0.0f;
foreach (var setKv in varKV.Value)
{
maxMembership = Mathf.Max(maxMembership, Mathf.Min(setKv.Key.GetMembershipFunction().Calculate(x).value, setKv.Value.value));
}
numerator += x * maxMembership;
denominator += maxMembership;
}
float centerOfMass = numerator / denominator;
context.crispOutputValues[variable] = centerOfMass;
}
}
public FuzzySet(FuzzyContext.Variable variable, string name, MembershipFunction membershipFunction)
{
this.variable = variable;
this.name = name;
this.membershipFunction = membershipFunction;
}
