Swarm Intelligence Algorithms

Original GWO algorithm 209

FIGURE 16.1

Social dominant hierarchy of grey wolf.

The vectors



A and



C are calculated as follows:



A = 2a · r

1

·a (16.3)



C = 2 · r

2

(16.4)

where components of a are linearly decreased from 2 to 0 over the course of

iterations and r

1

, r

2

are random vectors in [0, 1]

16.2.4 Hunting process

The alpha guides the beta and delta in the hunting process. In the mathe-

matical model, the alpha represents the overall best solutions, while the beta

and delta represent the second and third best solutions in the population. All

solutions (wolves) update their positions according to the position of the best

first three solutions (alpha, ...