Features

Single-Objective Optimizers

These are standard optimization techniques for finding the optima of a single objective function.

Continuous

Single-objective optimization where the search-space is continuous. Perfect for optimizing various common functions.

• pyswarms.single.global_best - classic global-best Particle Swarm Optimization algorithm with a star-topology. Every particle compares itself with the best-performing particle in the swarm.
• pyswarms.single.local_best - classic local-best Particle Swarm Optimization algorithm with a ring-topology. Every particle compares itself only with its nearest-neighbours as computed by a distance metric.
• pyswarms.single.general_optimizer - alterable but still classic Particle Swarm Optimization algorithm with a custom topology. Every topology in the pyswarms.backend module can be passed as an argument.

Discrete

Single-objective optimization where the search-space is discrete. Useful for job-scheduling, traveling salesman, or any other sequence-based problems.

• pyswarms.discrete.binary - classic binary Particle Swarm Optimization algorithm without mutation. Uses a ring topology to choose its neighbours (but can be set to global).

Utilities

Benchmark Functions

These functions can be used as benchmarks for assessing the performance of the optimization algorithm.

• pyswarms.utils.functions.single_obj - single-objective test functions

Search

These search methods can be used to compare the relative performance of hyperparameter value combinations in reducing a specified objective function.

• pyswarms.utils.search.grid_search - exhaustive search of optimal performance on selected objective function over cartesian products of provided hyperparameter values
• pyswarms.utils.search.random_search - search for optimal performance on selected objective function over combinations of randomly selected hyperparameter values within specified bounds for specified number of selection iterations

Plotters

A quick and easy to use tool for the visualization of optimizations. It allows you to easily create animations and to visually check your optimization!

• pyswarms.utils.plotters

Environment

Deprecated since version 0.4.0: Use pyswarms.utils.plotters instead!

Various environments that allow you to analyze your swarm performance and make visualizations!

• pyswarms.utils.environments.plot_environment - an environment for plotting the cost history and animating particles in a 2D or 3D space.