Particle swarm optimization: Difference between revisions

Revision as of 19:08, 9 May 2005

Revision as of 13:16, 17 May 2005

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* local bests are known in neighborhoods of particles

Updating the position and velocity is done through the following formulas at each iteration:

* <math> x =\leftarrow x + v </math>

* <math> v =\leftarrow wv + c_1 r_1 (\hat{x}-x) + c_2 r_2 (\hat{x}_g-x) </math>

** <math>w</math> is the inertial constant. Good values are usually slightly less than 1.

** <math>c_1</math> and <math>c_2</math> are constants that say how much the particle is directed towards good positions. Good values are usually right around 1.