reading file in objective function optimization

Im using genetic algorithm to optimize a function, but in my objective function there are xlsread, and lots of load .mat file. I try using ga, but it is very slow. After 2 hours there is still nothing yet (i use 'PlotFcn', @gaplotbestf). I searched around and did find this https://www.mathworks.com/matlabcentral/answers/602392-genetic-algorithm-run-time-and-result-analysis#comment_1031587

one of their suggestion is to avoid read file in objective function, which i have a lot, like xlsread and load .mat files. And they suggest that using pameter function, which i dont understand. Can someone suggest how to avoid reading file in objective function, or explain what did they mean when they say should use parameter function?

Thank you.

Answer 1

[Matt J]

Read the files into Matlab variables before you run your optimization. Make the variables fixed data in your objective function using anonymous or nested functions as described here:

Passing Extra Parameters - MATLAB & Simulink

[quan ng]

Thanks, i just find out about it too and have tried it, it is much more faster