| u and k | uniform probability distribution parameters in the range [0,1] |
| the position of the i-th particle in the j-th dimension of the space | |
| contraction-expansion coefficient | |
| pi | local attractor point |
| Mbest | mainstream thought or mean best value |
| u and k | uniform probability distribution parameters in the range [0,1] |
| the position of the i-th particle in the j-th dimension of the space | |
| contraction-expansion coefficient | |
| pi | local attractor point |
| Mbest | mainstream thought or mean best value |