A Comparison of Selected Modifications of the Particle Swarm Optimization Algorithm

Table 1

Summary of PSO modifications.

Label	Equation
AdaptW	𝑤=𝑤max−𝑤min⋅𝑃𝑠+𝑤min
ChaoticRandW	𝑤(iter)=0.5⋅rand()+0.5⋅𝑧
ChaoticW	𝑤(iter)=𝑤max−𝑤min⋅itermax−iteritermax+𝑤min⋅𝑧
ConstantW	𝑤=𝑐
ConstrFactor	2𝐾=2−𝜑−𝜑^2−4⋅𝜑
LinTimeVaryingW	𝑤(iter)=itermax−iteritermax⋅𝑤max−𝑤min+𝑤min
NonlinTimeConstW	𝑤(iter)=𝑤ini⋅𝑢^iter
NonlinTimeW	𝑤()=2iteriter^0.3
RandomW	𝑤=0.5+rand()2