change number of pareto point with change number of initial population gamultiobj

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mohammad reza yazdanai 2022-1-15

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https://ww2.mathworks.cn/matlabcentral/answers/1629605-change-number-of-pareto-point-with-change-number-of-initial-population-gamultiobj

回答： Alan Weiss 2022-1-16

Hi, I had a question for you, why in a multi-objective genetic algorithm, the number of Pareto points changes with the change in the number of population members?

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Answer 1

Alan Weiss 2022-1-16

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https://ww2.mathworks.cn/matlabcentral/answers/1629605-change-number-of-pareto-point-with-change-number-of-initial-population-gamultiobj#answer_875385

You asked the exact same question very recently:

https://www.mathworks.com/matlabcentral/answers/1629415-change-number-of-pareto-point-with-change-number-of-initial-population-gamultiobj?s_tid=srchtitle

Please don't ask the same question multiple times.

As for the answer, generally the larger the population size, the more points on the Pareto front. In gamultiobj, for example, the ParetoFraction option keeps the fraction of population members on the front at 0.35 by default. So clearly a population size N will have approximately 0.35N members on the front.

Alan Weiss

MATLAB mathematical toolbox documentation