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Table 3

Description of the used PSO parameters.

PSO parameters NPM model MPM model SPM model
Swarm size 30 30 30
Number of iterations 50–80 50–80 50–80
Acceleration Constants C1 = 1.25, C2 = 2.25, C3 = 2.25 C1 = 1.25, C2 = 2.25, C3 = 0 C1 = 1.25, C2 = 0, C3 = 2.25
Communication topology Ring Fully connected Ring
Inertia weight Linearly decreasing
(0.4 − 0.2)
Linearly decreasing
(0.4 − 0.2)
Linearly decreasing
(0.4 − 0.2)
Number of used threads Depends on the objective function Depends on the number of sub-spaces Depends on the number of created neighborhoods
Stopping criteria - The maximum number of iterations
- The maximum number of iterations without improvement of Gbest
- The maximum number of iterations
- The maximum number of iterations without improvement of Gbest
-A precision relative to the radius
- A precision relative to the distance of Gbest
- The maximum number of iterations without improvement of Gbest

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