Genetic Algorithm does not produce the requires number of individus

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Felipe Mendes 2012-6-8

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https://ww2.mathworks.cn/matlabcentral/answers/40651-genetic-algorithm-does-not-produce-the-requires-number-of-individus

I'm doing an optimization with ga modulus, using the vectorized option for objective function and non-linear constraints. My function receives the entry matrix and does several finite elements meshes and solve them on a finite element software. If I input a test matrix (without the ga modulus) it will solve each element (line) and return their respective objective value. Nevertheless, when I use this function as an input function to the genetic algorithm with a non-linear constraint function, it doesn't input to the function (which is vectorized) the number of individus that I had specified. Generally on the first two generations it inputs only 1 or 2 individus, and after a bigger number, but not always the specified one. Does anyone has a clue of what might be the problem? Thanks a lot!! Felipe