26 lines
843 B
ObjectPascal
26 lines
843 B
ObjectPascal
function AveSqrDiff(TrueVal: double; Data: array of double): double;
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var I: integer;
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begin
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Result:=0;
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for I:=0 to High(Data) do Result:=Result+Sqr(Data[I]-TrueVal);
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Result:=Result/Length(Data);
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end;
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procedure DoDiversityPrediction(Memo: TMemo; TrueValue: double; Crowd: array of double);
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var AveError,AvePredict,Diversity: double;
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var S: string;
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begin
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AveError:=AveSqrDiff(Truevalue,Crowd);
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AvePredict:=Mean(Crowd);
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Diversity:=AveSqrDiff(AvePredict,Crowd);
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S:='Ave Error: '+FloatToStrF(AveError,ffFixed,18,2)+#$0D#$0A;
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S:=S+'Crowd Error: '+FloatToStrF(Sqr(TrueValue - AvePredict),ffFixed,18,2)+#$0D#$0A;
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S:=S+'Diversity: '+FloatToStrF(Diversity,ffFixed,18,2)+#$0D#$0A;
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Memo.Lines.Add(S);
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end;
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procedure ShowDiversityPrediction(Memo: TMemo);
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begin
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DoDiversityPrediction(Memo,49,[48,47,51]);
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DoDiversityPrediction(Memo,49,[48,47,51,42]);
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end;
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