MATLAB: Problem of PSO code： ab=1/sqrt(​2)*ones(2,​G*T);

pso optimization unit commitment

swarm=zeros(NP,G*T);%
ab=1/sqrt(2)*ones(2,G*T);
for n=1:NP
    swarml=initial(G,T);
    [swarm(n,:),swarmTOFF(:,:,n)]=Verify(swarml,G,T,x0,MUT,MDT,InitialTON,InitialTOFF,PMAX,PD,SR,h);
    [fitness(n)]=ObjectFitness(swarm(n,:),G,T,x0,MDT,PMAX,PMIN,PD,a,b,c,SUH,SUC,Tcold,swarmTOFF(:,:,n));
end
Gmbest=swarm(1,:);
Gfitness=fitness(1);
for n=1:NP
    Pmbest(n,:)=swarm(n,:);
    Pfitness(n)=fitness(n);
    if Gfitness>Pfitness(n)
        Gmbest=Pmbest(n,:);
        Gfitness=Pfitness(n);
    end
end
for n=1:NP
    ab1(:,:,n)=ab;
end
for k=1:ITERmax
    for n=1:NP      [swarm(n,:),ab1(:,:,n)]=Update(swarm(n,:),G,T,Pmbest(n,:),Gmbest,fitness(n),Pfitness(n),Gfitness,Zmax,Zmin,k,ITERmax,ab1(:,:,n));
    [swarm(n,:),swarmTOFF(:,:,n)]=Verify(swarm(n,:),G,T,x0,MUT,MDT,InitialTON,InitialTOFF,PMAX,PD,SR,h);
        [fitness(n)]=ObjectFitness(swarm(n,:),G,T,x0,MDT,PMAX,PMIN,PD,a,b,c,SUH,SUC,Tcold,swarmTOFF(:,:,n));
   % end
   % for n=1:NP
        if Pfitness(n)>=fitness(n)
            Pmbest(n,:)=swarm(n,:);
           % Ptmbest(:,:,n)=Mp(:,:,n);
            Pfitness(n)=fitness(n);
        end
        if Gfitness>Pfitness(n)
        Gmbest=Pmbest(n,:);
       % Gptbest=Ptmbest(:,:,n);
        Gfitness=Pfitness(n);
        end
    end
end
does the ab（ab=1/sqrt(2)*ones(2,G*T);） means V（i，j）of PSO？ what kind of matrix “ab”create？ and what's ab1(:,:,n)=ab; means？

Best Answer

  • does the ab（ab=1/sqrt(2)*ones(2,G*T);） means V（i，j）of PSO
Not exactly, but close enough.
  • what kind of matrix “ab”create？
A double precision matrix with 2 rows and G*T columns
  • and what's ab1(:,:,n)=ab; means
Copy the entire matrix ab into the two-dimensional slice #n of ab1. Those three lines of code make a three-dimensional matrix ab1 in which every layer is a copy of ab. The "for" loop could be replaced with
ab1 = repmat(ab, 1, 1, NP);
Reference to entire code: http://www.ilovematlab.cn/thread-311773-1-1.html
Related Question