Multispecies Coevolution Particle Swarm Optimization Based on Previous Search History

Algorithm 3

Pseudocode of multispecies coevolution particle swarm optimization based on previous search history.

   Initialization:

()    Stochastically generate a population of N individuals in search space;

    Set the numbers of clusters and the total number of iteration T;

    Calculate fitness values of individuals;

()    Normalize the dimensions of each individual as Algorithm 2;

()    Initialize the fitness tree as Algorithm 1;

()    ; ;

   Loop:

()  While ()

()    If ()

()        Partition the whole population into multiple species based on K-means clustering;

         ;

()      End If

()      Update the position of individuals according to Eq. (6) and (7);

()      Normalize the dimensions of each individual as Algorithm 2;

()      Insert new individuals into fitness tree as Algorithm 1;

()      Update some individuals from fitness tree;

()      Calculate fitness values of individuals;

()      

() End