Added new lesson (6) dedicated to the PSO. Also changed a few things into the PSO-dedicated components (constructors)

eo/test/t-eoSyncEasyPSO.cpp

@@ -0,0 +1,104 @@
+//-----------------------------------------------------------------------------
+// t-eoEasySyncPSO.cpp
+//-----------------------------------------------------------------------------
+
+#ifndef __GNUG__
+// to avoid long name warnings
+#pragma warning(disable:4786)
+#endif // __GNUG__
+
+#include <eo>
+
+//-----------------------------------------------------------------------------
+typedef eoMinimizingFitness FitT;
+typedef eoRealParticle < FitT > Particle;
+//-----------------------------------------------------------------------------
+
+// the objective function
+double real_value (const Particle & _particle)
+{
+    double sum = 0;
+    for (unsigned i = 0; i < _particle.size ()-1; i++)
+        sum += pow(_particle[i],2);
+    return (sum);
+}
+
+
+int main()
+{
+    const unsigned int VEC_SIZE = 2;
+    const unsigned int POP_SIZE = 20;
+    const unsigned int NEIGHBORHOOD_SIZE= 5;
+    unsigned i;
+
+    // the population:
+    eoPop<Particle> pop;
+
+    // Evaluation
+    eoEvalFuncPtr<Particle, double, const Particle& > eval(  real_value );
+
+    // position init
+    eoUniformGenerator < double >uGen (-3, 3);
+    eoInitFixedLength < Particle > random (VEC_SIZE, uGen);
+
+    // velocity init
+    eoUniformGenerator < double >sGen (-2, 2);
+    eoVelocityInitFixedLength < Particle > veloRandom (VEC_SIZE, sGen);
+
+    // local best init
+    eoFirstIsBestInit < Particle > localInit;
+
+    // perform position initialization
+    pop.append (POP_SIZE, random);
+  
+    // topology
+    eoLinearTopology<Particle> topology(NEIGHBORHOOD_SIZE);
+
+	// the full initializer
+    eoInitializer <Particle> init(eval,veloRandom,localInit,topology,pop);
+    init();
+    
+   
+    // bounds
+    eoRealVectorBounds bnds(VEC_SIZE,-1.5,1.5);
+
+    // velocity
+    eoStandardVelocity <Particle> velocity (topology,1,1.6,2,bnds);
+
+    // flight
+    eoStandardFlight <Particle> flight;
+
+    // Terminators
+    eoGenContinue <Particle> genCont1 (50);
+	eoGenContinue <Particle> genCont2 (50);
+	
+    // PS flight
+    eoSyncEasyPSO<Particle> pso1(genCont1, eval, velocity, flight);
+
+	eoSyncEasyPSO<Particle> pso2(init,genCont2, eval, velocity, flight);
+    
+    // flight
+    try
+    {
+        pso1(pop);
+        std::cout << "FINAL POPULATION AFTER SYNC PSO n°1:" << std::endl;
+    	for (i = 0; i < pop.size(); ++i)
+        	std::cout << "\t" <<  pop[i] << " " << pop[i].fitness() << std::endl;
+        
+        pso2(pop);
+         std::cout << "FINAL POPULATION AFTER SYNC PSO n°2:" << std::endl;
+    	for (i = 0; i < pop.size(); ++i)
+        	std::cout << "\t" <<  pop[i] << " " << pop[i].fitness() << std::endl;
+    }
+    catch (std::exception& e)
+    {
+        std::cout << "exception: " << e.what() << std::endl;;
+        exit(EXIT_FAILURE);
+    }
+
+   
+
+    return 0;
+}
+
+//-----------------------------------------------------------------------------