create NEAT app repo

main.cpp

@@ -0,0 +1,110 @@
+#include <cstdio>
+#include <cstdlib>
+#include <ctime>
+
+#include "NEAT.h"
+
+#include "IteratorHelper.h"
+
+class MyNEAT: public NEAT
+{
+public:
+	MyNEAT(int num_inputs, int num_outputs) : NEAT(num_inputs,num_outputs)
+	{
+		// empty
+	}
+	
+	virtual bool TestNetworks(std::vector<NeuralNetwork>& networks, std::vector<float>& fitness)
+	{
+		bool solution_found = false;
+		iterate_each( std::vector<NeuralNetwork>::iterator, it_network, networks )
+		{
+			std::vector<float> inputs;
+			std::vector<float> outputs;
+			float error_sum = 0.0f;
+			float error;
+			int hits = 0;
+
+			#define ON  (1.0f)
+			#define OFF (0.0f)
+
+			// 0, 0 = 0
+			inputs.push_back(OFF);
+			inputs.push_back(OFF);
+			(*it_network).Reset();
+			(*it_network).Update(inputs,outputs);
+			error = outputs[0] - OFF;
+			error_sum += error * error;
+			if ( outputs[0] < 0.44f )
+			{
+				++hits;
+			}
+
+			// 0, 1 = 1
+			inputs.clear();
+			inputs.push_back(OFF);
+			inputs.push_back(ON);
+			(*it_network).Reset();
+			(*it_network).Update(inputs,outputs);
+			error = outputs[0] - ON;
+			error_sum += error * error;
+			if ( outputs[0] > 0.6f )
+			{
+				++hits;
+			}
+
+			// 1, 0 = 1
+			inputs.clear();
+			inputs.push_back(ON);
+			inputs.push_back(OFF);
+			(*it_network).Reset();
+			(*it_network).Update(inputs,outputs);
+			error = outputs[0] - ON;
+			error_sum += error * error;
+			if ( outputs[0] > 0.6f )
+			{
+				++hits;
+			}
+
+			// 1, 1 = 0
+			inputs.clear();
+			inputs.push_back(ON);
+			inputs.push_back(ON);
+			(*it_network).Reset();
+			(*it_network).Update(inputs,outputs);
+			error = outputs[0] - OFF;
+			error_sum += error * error;
+			if ( outputs[0] < 0.5f )
+			{
+				++hits;
+			}
+			
+			// average
+			error_sum /= 4.0f;
+
+			// store
+			fitness.push_back(error_sum);
+			//printf("error = %0.5f\n",error_sum);
+			
+			// did we solve it?
+			if ( hits == 4 )
+			{
+				solution_found = true;
+			}
+		}		
+		//printf("\n");
+		return solution_found;
+	}
+	
+};
+
+int main (int argc, char * const argv[])
+{
+	MyNEAT n(2,1);
+
+	srand( (unsigned)time( NULL ) );
+  
+	n.Run();
+	
+	return 0;
+}