How to use PSA algorithm

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In order to solve optimization problems, there are many biological heuristic algorithms. Through some biological characteristics to avoid local minimization and speed up optimization. What I want to introduce here is the Porcellio scaber algorithm (PSA) proposed by Yinyan Zhang and Shuai Li of the Hong Kong Polytechnic University (The Hong Kong Polytechnic University). What I should learn is the survival rule of the rat woman in the biology book of middle school.

Function PS_simple (number_of_PS,MaxStep)

Number of% porcellio scaber

N=number_of_PS

% initalize a matrix to store position data

X=zeros (MaxStep,2,N)

% Generate the initial positions of all the porcellio scaber

X (1) 4*rand (2)

% Set weighted paramter\ lambda for decion based on aggregation and the

% propensity to explore novel enviroments

Lambda=0.8

% generate a series of\ tau and make each elment of\ tau a zero mean

% random real number

Sigma=0.001; standard deviation

Tau_data=zeros (MaxStep,2,N)

For iTunes 1 purl 2

For jungle 1V N

Tau_data (:, iMagnej) = sigma* (2*rand (MaxStep,1)-1)

End

End

Iter=1

While iter