GA is not working...Function i have written separately calling in main program but not worked??

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ash 2018-4-6

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评论： Sergey Kasyanov 2018-4-7

xdata =[ 1 2 3 4 5 6] ; ydata=(1./(xdata.^2+2*xdata+4)); FitnessFunction = @simple_fitness; numberOfVariables = 3; x =ga(@genefun,numberOfVariables) * function y = simple_fitness(x,xdata,ydata) y = @(x) sum((x(1)./(x(2).*xdata.^1.9+x(3).*xdata.^0.9+1) - ydata).^2);**

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Answer 1

Sergey Kasyanov 2018-4-6

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https://ww2.mathworks.cn/matlabcentral/answers/393132-ga-is-not-working-function-i-have-written-separately-calling-in-main-program-but-not-worked#answer_313805

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There are two version of code which are working but do not converge.

First:

xdata =[ 1 2 3 4 5 6] ;
ydata=(1./(xdata.^2+2*xdata+4));
FitnessFunction = @(x) sum((x(1)./(x(2).*xdata.^1.9+x(3).*xdata.^0.9+1)-ydata).^2);
numberOfVariables = 3;
x =ga(FitnessFunction,numberOfVariables)

Second:

xdata =[ 1 2 3 4 5 6] ;
ydata=(1./(xdata.^2+2*xdata+4));
numberOfVariables = 3;
x =ga(FitnessFunction,numberOfVariables)
%in separate file
function y=simple_fitness(xdata,ydata)
y=@(x) sum((x(1)./(x(2).*xdata.^1.9+x(3).*xdata.^0.9+1)-ydata).^2)
end