[jgap-users] How to write evaluate(IChromosome a_subject) function for Mini F(x) problem

[ShankhaB <Sha...@co...>]

Hi 

I try to solve some simple minimization problem with constraints. 
Problem : 

Minimize Z = 2x1+ 8x2   
Subject To -   5x1+x2>=10   
                    2x1+2x2>=14 
                    x1+4x2>=12 
                    x1,x2>=0   and 1<x1<=7    |   0<x2<=4 



What I understand I have to check the my Fitness function or objective
function (Z) in the 

public double evaluate(IChromosome a_subject)  method , where a_subject  is
the one of the potential solution. 

from the "a_subject"  object I have to get the value of X1 and X2 then , I
have to chek all the above mentioned constraints as well as the Fitness
function (Z). 

What should be the logic for which IChromosome ( a_subject) - Z will be
minimized ? 

Please guide me? 

Thank you, 
shankha 

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