GA does not solve problems with integer and equality constraints.

Question

Mohammad Al ja'idi 2020-11-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/660853-ga-does-not-solve-problems-with-integer-and-equality-constraints

评论： Mohammad Al ja'idi 2020-11-24

采纳的回答： Stephan

Hi,

I am working on intger (binary) nonlinear problem with (0-1), with equality constraint.

when I used the GA to solve the problem I got the following error:

"GA does not solve problems with integer and equality constraints"

How can I solve this problem, and is there any function in matlab can help or support this kind of problem (integer nonlinear problem with equality constraint)

Thanks,

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Stephan 2020-11-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/660853-ga-does-not-solve-problems-with-integer-and-equality-constraints#answer_554993

编辑：Stephan 2020-11-24

Reformulate your constraints:

https://de.mathworks.com/help/gads/mixed-integer-optimization.html#bs1clc2

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Mohammad Al ja'idi 2020-11-24

Thanks sir

请先登录，再进行评论。

Answer 2

Walter Roberson 2020-11-24

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/660853-ga-does-not-solve-problems-with-integer-and-equality-constraints#answer_555003

you can still use ga but you have to tell ga that you have no integer constraints. Then you have to provide a population function and a crossover function and a mutation function that all "just happen" to generate configurations that satisfy your integer constraints.

When you declare integer constraints then the implementation works by putting in functions that enforce the constraints, and that interferes with adding your own functions.