mutate.m

一些用matlab编写的经典遗传算法算例 挺有用的

function c = mutate(chr,pmut)
% MUTATE - mutates the design variables DNA
%    
% c=mutate(chr,pmut) returns the mutated chromosome.  The
% argument prob_mutate is the probability of mutation.
%
% See also PROBMUT
c=chr;
%----------GET DATA
for i=1:length(c)
  
  for j=1:length(pmut);
    if strcmp(pmut(j).name,get(chr(i),'name'))
      pm=pmut(j).pc;
      break;
    end
  end    
  
  cdvs=get(chr(i),'cdvs');
  ddvs=get(chr(i),'ddvs');
  
  
  %----------MUTATE CDVS
  if ~isempty(cdvs)
    for k=1:length(cdvs);
      dna=get(cdvs(k),'dna');
      for l=1:length(dna)
	if rand<=pm
	dna(l)=not(dna(l));
	end
      end
      cdvs(k)=set(cdvs(k),'dna',dna,'value',convert(cdvs(k)));
    end
  else 
    cdvs=cdv;
  end
  c(i)=set(c(i),'cdvs',cdvs);
  
  if ~isempty(ddvs)
    for k=1:length(ddvs);
      dna=get(ddvs(k),'dna');
      for l=1:length(dna)
      if rand<=pm
	dna(l)=not(dna(l));
      end
      end
      ddvs(k)=set(ddvs(k),'dna',dna,'value',convert(ddvs(k)));
    end
  else
    ddvs=ddv;
    c(i)=set(c(i),'ddvs',ddvs);
  end
end