i'm already coding some PSO versions on MATLAB and i face some problems . can any one help me please ?

I have some questions about PSO algorithm (about some parameters , a matrix that contain double structs : struct particle and struct dimension of the given problem )

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Probably. http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer