jeco.kernel.algorithm.mopso
Class NSPSO

java.lang.Object
  jeco.kernel.algorithm.Algorithm
      jeco.kernel.algorithm.mopso.NSPSO

public class NSPSO
extends Algorithm

Xiaodong Li A Non-dominated Sorting Particle Swarm Optimizer for Multiobjective Optimization GECCO-2003, Springer-Verlag, 2003, 2723, 37-48 Input parameters: - C1: PSO c1 factor - C2: PSO c2 factor - CHI: PSO chi factor - MAX_ITERATIONS - NUM_PARTICLES - SORTING_METHOD: CROWDING_DISTANCE, CROWDING_DISTANCE_REPLACE, NICHE_COUNT, NICHE_COUNT_REPLACE - TOP_PART_PERCENTAGE: 0.05 usually, but I am using 0.25 - W: PSO w factor

Author:

José L. Risco-Martín

Field Summary

protected double

chi PSO chi factor

Fields inherited from class jeco.kernel.algorithm.Algorithm

name, problem

Constructor Summary

NSPSO(Problem problem, int numParticles, int maxIterations, double w, double c1, double c2)

NSPSO(Problem problem, int numParticles, int maxIterations, double w, double c1, double c2, double chi)

NSPSO(Problem problem, int numParticles, int maxIterations, double w, double c1, double c2, double chi, double topPartPercentage, java.lang.String sortingMethod)

Method Summary

Solutions	execute()
void	initialize()
void	reduceExternalArchive(int maxSize)
void	setMaxT(int maxT)
void	setSwarmSize(int swarmSize)
void	step()

Methods inherited from class jeco.kernel.algorithm.Algorithm

getName, getProblem, setLevel, setProblem

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

chi

protected double chi

PSO chi factor

Constructor Detail

NSPSO

public NSPSO(Problem problem,
             int numParticles,
             int maxIterations,
             double w,
             double c1,
             double c2,
             double chi,
             double topPartPercentage,
             java.lang.String sortingMethod)

NSPSO

public NSPSO(Problem problem,
             int numParticles,
             int maxIterations,
             double w,
             double c1,
             double c2,
             double chi)

NSPSO

public NSPSO(Problem problem,
             int numParticles,
             int maxIterations,
             double w,
             double c1,
             double c2)

Method Detail

initialize

public void initialize()

Specified by:

initialize in class Algorithm

execute

public Solutions execute()

Specified by:

execute in class Algorithm

step

public void step()

Specified by:

step in class Algorithm

reduceExternalArchive

public void reduceExternalArchive(int maxSize)

setMaxT

public void setMaxT(int maxT)

setSwarmSize

public void setSwarmSize(int swarmSize)