Matlab遗传算法学习-reclin

 

中间重组与线性重组相似，然而recint对没对值使用了一新的Alpha值一起重组，而reclin对每队双亲使用一Alpha因子。 

 

 

function NewChrom = reclin(OldChrom, XOVR);
 
% Identify the population size (Nind) and the number of variables (Nvar)
   [Nind,Nvar] = size(OldChrom);
 
% Identify the number of matings
   Xops = floor(Nind/2);% 向左取整
 
% Performs recombination
   odd = 1:2:Nind-1;% 冒号运算符可以指定增量步长值，(first:step:last)，1:2:Nind-1将产生1,3,5等等
   even= 2:2:Nind;
 
   % position of value of offspring compared to parents
   Alpha = -0.25 + 1.5 * rand(Xops,1);%rand生成0~1之间均匀分布的随机数
   Alpha = Alpha(1:Xops,ones(Nvar,1));%ones创建m*n的全1矩阵，%每列的Alpha值相同相当于，复制Nvar个Alpha
 
%交配的对是有序的，奇数行与它下一个偶行配对。
   % recombination
   NewChrom(odd,:)  = OldChrom(odd,:) + Alpha .* (OldChrom(even,:) - OldChrom(odd,:));
 
   % the same ones more for second half of offspring
   Alpha = -0.25 + 1.5 * rand(Xops,1);
   Alpha = Alpha(1:Xops,ones(Nvar,1));
   NewChrom(even,:) = OldChrom(odd,:) + Alpha .* (OldChrom(even,:) - OldChrom(odd,:));
 
%最后一个奇数行不参与交配，直接加入到NewChrom的末尾  
%余项函数，取余rem(10,3)=1  
% If the number of individuals is odd, the last individual cannot be mated
% but must be included in the new population
   if rem(Nind,2),  NewChrom(Nind,:)=OldChrom(Nind,:); end
 
 
% End of function