www.pudn.com > SGAProToolboxVer.zip > FITNESS.M

function [fitness_value]=fitness(decimal_space); 
%Fitness Function Of Simple Genetic Algorithm Program (Version 1.0.0.1 ) 
%support multi-parameters 
%By chen yi ,CQU .QQ:2376635  Email:cdey@10mail.net  (April,19th,2002,AAPP day) 
%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
% 
% This function is to work out the Fitness after decoded from  
% binary_space to decimal_space. 
% 
% so,you should first define the fitness_function.m 
% usage: 
% fitness_value=fitness(decimal_space) 
% 
%before you use this function, 
%you should give your fitness_function.m first!! 
% 
%e.g. 
%f(x)=1./a+sin(b)+exp(c)+log2(d)+10 , a,b,c,d belong to [1,7],[2,8],[3,9],[4,10] 
%[binary_space,bits_sum,bits]=coding([1,2,3,4],[7,8,9,10],10,[0.01,0.01,0.01,0.01]) 
%[decimal_space]=decoding([1,2,3,4],[7,8,9,10],binary_space,bits) 
%[fitness_value]=fitness(decimal_space) 
% 
%See Also  DECODING,CODING ,SELECTION ,CROSSOVER,MUTATION 
%          FITNESS_FUNCTION, SGA,FITNESS 
% 
%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
 
 
 
[population,parameter_numbers]=size(decimal_space); 
 
decimal_space_cell=cell(population,parameter_numbers); 
%transfor matrix to cell as the input parameter list 
for i=1:1:population 
   for j=1:1:parameter_numbers 
      decimal_space_cell{i,j}=decimal_space(i,j); 
   end 
   fitness_value(i)=fitness_function(decimal_space_cell{i,1:1:parameter_numbers}); 
end 
 
%end of fitness