initial import of differential evolution engine

de.h

@@ -0,0 +1,80 @@
+#ifndef __de_h__
+#define __de_h__
+
+
+#include "devec.h"
+#include "derand.h"
+
+
+namespace DE
+{
+
+	
+	template <unsigned int DIM, unsigned int POP=(DIM*10)>
+	class Engine
+	{
+	public:
+
+		Engine();
+		virtual ~Engine();
+
+		void Reset();
+
+		const double* GetBest() const;
+
+		void SetRange(double minimum, double maximum);
+		void SetRange(const Vector<DIM>& minimum, const Vector<DIM>& maximum);
+		
+		virtual double CalculateError(const double testcase[DIM], bool& stop) = 0;
+
+		bool Solve(unsigned int maxgenerations = 1000000000);
+
+	private:
+
+		void Select(unsigned int candidate, unsigned int *r1 = 0, unsigned int *r2 = 0, unsigned int *r3 = 0, unsigned int *r4 = 0, unsigned int *r5 = 0);
+
+		void Dump(const double& fitness, Vector<DIM>& individual) const;
+
+		void MakeTrial_best1exp(unsigned int candidate, Vector<DIM>& trial);
+		void MakeTrial_rand1exp(unsigned int candidate, Vector<DIM>& trial);
+		void MakeTrial_randtobest1exp(unsigned int candidate, Vector<DIM>& trial);
+		void MakeTrial_best2exp(unsigned int candidate, Vector<DIM>& trial);
+		void MakeTrial_rand2exp(unsigned int candidate, Vector<DIM>& trial);
+		void MakeTrial_best1bin(unsigned int candidate, Vector<DIM>& trial);
+		void MakeTrial_rand1bin(unsigned int candidate, Vector<DIM>& trial);
+		void MakeTrial_randtobest1bin(unsigned int candidate, Vector<DIM>& trial);
+		void MakeTrial_best2bin(unsigned int candidate, Vector<DIM>& trial);
+		void MakeTrial_rand2bin(unsigned int candidate, Vector<DIM>& trial);
+
+	private:
+
+		static const double DEFAULTSCALE;
+		static const double DEFAULTCROSSOVER;
+		static const double BIGDOUBLE;
+
+
+	private:
+
+		Random      prng;
+
+		Vector<DIM> best;
+		Vector<DIM> minimum;
+		Vector<DIM> maximum;
+		Vector<DIM> population[POP];
+		double      fitness[POP];
+
+		double      scale;
+		double      crossover;
+		double      bestfitness;
+
+	};
+
+
+};
+
+
+#include "de.inl"
+
+
+#endif // __de_h__
+