public static TruthValue make(float frequency, float confidence, bool analytic = false)
{
TruthValue result = new TruthValue();
result.frequency = frequency;
result.confidence = confidence;
result.analytic = analytic;
return(result);
}
public TruthValue clone()
{
TruthValue result = new TruthValue();
result.frequency = frequency;
result.confidence = confidence;
result.analytic = analytic;
return(result);
}
public static TruthValue calcTruthDoublePremise(TruthValue a, TruthValue b, EnumTruthFunction truthFunction)
{
switch (truthFunction)
{
case EnumTruthFunction.REVISION:
return(TruthFunctions.revision(a, b));
case EnumTruthFunction.COMPARISON:
return(TruthFunctions.comparison(a, b));
case EnumTruthFunction.ANALOGY:
return(TruthFunctions.analogy(a, b));
case EnumTruthFunction.ANALOGYTICK:
return(TruthFunctions.anonymousAnalogy(a, b));
case EnumTruthFunction.DEDUCTION2:
return(TruthFunctions.desireDed(a, b));
case EnumTruthFunction.INDUCTION:
return(TruthFunctions.induction(a, b));
case EnumTruthFunction.INTERSECTION:
return(TruthFunctions.intersection(a, b));
// TODO< search formulas >
//case EnumTruthFunction.STRUCTINT:
//case EnumTruthFunction.STRUCTABD:
//case EnumTruthFunction.REDUCECONJUNCTION,
case EnumTruthFunction.EXEMPLIFICATION:
return(TruthFunctions.exemplification(a, b));
case EnumTruthFunction.RESEMBLANCE:
return(TruthFunctions.resemblance(a, b));
default:
throw new Exception("Double premise truth Function called for non-double premise truth");
}
}
// from https://github.com/opennars/opennars/blob/4515f1d8e191a1f097859decc65153287d5979c5/nars_core/nars/entity/TruthValue.java#L183
public bool checkEquals(TruthValue other)
{
return
(MathMisc.checkEpsilon(confidence, other.confidence, Parameters.TRUTH_EPSILON) &&
MathMisc.checkEpsilon(frequency, other.frequency, Parameters.TRUTH_EPSILON));
}
/**
* Calculate the absolute difference of the expectation value and that of a
* given truth value
*
* @param t The given value
* @return The absolute difference
*/
public float getExpDifAbs(TruthValue t)
{
return(Math.Abs(expectation - t.expectation));
}
