select.m

多目标试题组卷仿真程序,是毕业设计的好材料

function [PO1]=select(POPULATION,POPSIZE,CHROMLENGTH,fi) 
PO1=POPULATION;
totalfit=sum(fi);
prob=fi'/totalfit;
prob=cumsum(prob);
rs=sort(rand(POPSIZE,1));
fitin=1;newin=1;
while newin<=POPSIZE
   if (rs(newin)<prob(fitin))
      newpop(newin,:)=POPULATION(fitin,:);
      newin=newin+1;
   else
      fitin=fitin+1;
   end
end