Particle Swarm Optimizer API Reference

Bounds(dims)

Constructor for a Bounds object. Returns a bounds object with a lower bound of [lower...] and upper bound[upper...] with length of dims.

Bounds(dims)

Default constructor for a Bounds object. Returns a bounds object with a lower bound of [0...] and upper bound[1...] with length of dims.

Particle(ProblemBounds, VelocityBounds)

Default constructor for a Particle object. It creates a random unformly distributed particle within the specified ProblemBounds, and limits it's velocity to the specified VelocityBounds.

PSO(fn, Bounds, VelRange, Particles; tolerance = 1e-6, maxiters = 1000, InertialDecay = 0.5, PersonalWeight = 0.5, GlobalWeight = 0.5, InternalParams = nothing)

Minimizes function fn with-in the user specified Bounds via a Particle Swarm Optimizer. The particle velocities are limitted to the VelRange. The number of particles are defined by the Particles parameter.

Returns a Tuple of the following form: ( GlobalBestPos, GlobalBestScore, P ) Where P is an array of the particles used in the optimization.

*Note: if the optimization function requires an additional constant parameter, please pass that parameter to InternalParams. This will only work if the optimized parameter(o) and constant parameter(c) for the function of interest has the following format: F(o,c) *

Kennedy, J.; Eberhart, R. (1995). Particle Swarm Optimization. Proceedings of IEEE International Conference on Neural Networks. IV. pp. 1942–1948. doi:10.1109/ICNN.1995.488968