Unityで対話型進化計算(Interactive Evolutionary Computation, IEC)を試してみた

//GP全体を司るクラスのインスタンスを定義
        Brain=new Engine<Vector3, ProblemState>();

//GPの変数名を定義
        Brain.AddVariable("XY0");
        Brain.AddVariable("X0Y");
        Brain.AddVariable("YX0");
        Brain.AddVariable("Y0X");
        Brain.AddVariable("0XY");
        Brain.AddVariable("0YX");

//GPで使う演算子を定義
        //unary
        Brain.AddFunction((a) => new Vector3 (Mathf.Abs(a.x),Mathf.Abs(a.y),Mathf.Abs(a.z)), "abs");
        Brain.AddFunction((a) => new Vector3 (CustomLog(a.x),CustomLog(a.y),CustomLog(a.z)), "Log");
        Brain.AddFunction((a) => new Vector3 (Mathf.Exp(a.x),Mathf.Exp(a.y),Mathf.Exp(a.z)), "exp");
        Brain.AddFunction((a) => new Vector3 (Mathf.Sin(a.x),Mathf.Sin(a.y),Mathf.Sin(a.z)), "sin");
        Brain.AddFunction((a) => new Vector3 (Mathf.Cos(a.x),Mathf.Cos(a.y),Mathf.Cos(a.z)), "cos");
        Brain.AddFunction((a) => new Vector3 (Sqrt(a.x),Sqrt(a.y),Sqrt(a.z)), "sqrt");
        //Brain.AddFunction((a) => new Vector3 (Mathf.Sign(a.x),Mathf.Sign(a.y),Mathf.Sign(a.z)), "sign");
        Brain.AddFunction((a) => -1.0f*a, "Reverse");
        
        //binary
        Brain.AddFunction((a, b) => a + b, "Plus");
        Brain.AddFunction((a, b) => a - b, "Minus");
        Brain.AddFunction((a, b) => new Vector3(a.x*b.x,a.y*b.y,a.z*b.z), "Mul");
        Brain.AddFunction((a, b) => new Vector3(CustomDiv(a.x,b.x),CustomDiv(a.y,b.y),CustomDiv(a.z,b.z)), "Div");
        Brain.AddFunction((a, b) => Vector3.Max(a,b), "Max");
        Brain.AddFunction((a, b) => Vector3.Min(a,b), "Min");
        //Brain.AddFunction((a, b) => new Vector3(CustomPow(a.x,b.x),CustomPow(a.y,b.y),CustomPow(a.z,b.z)), "Pow");
        Brain.AddFunction((a, b) => new Vector3(Hypot(a.x,b.x),Hypot(a.y,b.y),Hypot(a.z,b.z)), "Hypot");
        Brain.AddFunction((a, b) => Vector3.Lerp(a,b,0.5f), "Lerp");
        Brain.AddFunction((a, b) => new Vector3(Mix(a.x,b.x),Mix(a.y,b.y),Mix(a.z,b.z)), "Mix");

public static Vector3 ScanTree(CandidateSolution<Vector3, ProblemState> candidate, Vector2 pos){
        //GPの変数ノードに実際に値を代入。x座標、y座標、0を並び替えた6通りのベクトル。
        candidate.SetVariableValue("XY0",new Vector3(pos.x,pos.y,0));
        candidate.SetVariableValue("X0Y",new Vector3(pos.x,0,pos.y));
        candidate.SetVariableValue("YX0",new Vector3(pos.y,pos.x,0));
        candidate.SetVariableValue("Y0X",new Vector3(pos.y,0,pos.x));
        candidate.SetVariableValue("0XY",new Vector3(0,pos.x,pos.y));
        candidate.SetVariableValue("0YX",new Vector3(0,pos.y,pos.x));

        //GPの1個体の木の計算結果を取得
        return candidate.Evaluate();
    }

    void Initialize(){
        ...

        //GP木の評価を定義
        Brain.AddScanTreeFunction((c, p) => ScanTree(c, p));
        ...
   }

//個体の生成など、GPを初期化
        Brain.InitTrainer();
        //GP木をもとにテクスチャを生成して貼り付け
        GetTextureFromTree();