setting-up input variable in genetic algorithm

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Ful0
Ful0 2021-2-6
评论： Walter Roberson 2021-2-17
How can I set up an input variable in my ga that varies from 1 to 2 with steps of 0,1?
The results of my ga has too many significant digits after comma ( precisely 4).
Thank you
  1 个评论
Walter Roberson
Walter Roberson 2021-2-17
If you are seeing exactly 4 significant digits, chances are that you have
format short
in effect, and that you would see more digits if you used
format long g

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采纳的回答

Alan Weiss
Alan Weiss 2021-2-17
You need to use Mixed Integer ga Optimization in one of several ways.
  • Internally to your objective function, change your integer variable x to x/10. Or,
  • Make a list of allowable values in a variable indexvar. Have your objective function evaluate indexvar(x), where x is your integer-valued variable. This is more flexible, in that you can have any list of allowable values.
See Solving a Mixed Integer Engineering Design Problem Using the Genetic Algorithm and in particular the section Add Discrete Non-Integer Variable Constraints.
Alan Weiss
MATLAB mathematical toolbox documentation

更多回答（1 个）

Shiva Kalyan Diwakaruni
Hi,
You can try using optimoptions for genetic algorithm where you can many options for passing extra parameters either in form of variables or a user defined function.
please refer the below link for more information on optimoptions for ga function
https://www.mathworks.com/help/gads/genetic-algorithm-options.html
below is the link to see how we can pass extra paramters for customization of ga function
https://www.mathworks.com/help/optim/ug/passing-extra-parameters.html
hope it helps,
thanks
  1 个评论
Ful0
Ful0 2021-2-17
Hi,
thank you so much for your answer.
I'm yet not able to find a way to set up the option I need for my problem.
How can I set up a step of 0,1 in the output? through PopulationType:custom?
Thank you

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