How can I specify the variables which the genetic algorithm selects to be only whole numbers (using MatLab)?

In Matlab GA tool-box, I can set the lower and upper bound of my variables but is it possible to specify the variables that are selected by the tool to be only whole numbers within the lower and upper bound?

Answer 1

[Walter Roberson]

Yes. See https://www.mathworks.com/help/gads/mixed-integer-optimization.html

You put the information after the non-linear constraint function and before the options.

[Addis Addis]

It's multi-objective genetic algorithm so I'm working on gamultiobj function, which is not allowing me to specify the integer values [x,fval] = gamultiobj(fitness,nvar,[],[],[],[],lb,ub,ConsFcn,options);

[Walter Roberson]

In that case you will need to provide custom population function, custom crossover function, and custom mutation function that just happen to only create intregal members.