Experimental Particle Swarm Optimisation component

More information TBC.

If you have any suggestions on improvements to this project they would be gratefully received.

Basic usage

use Contrebis\Pso\Swarm;
use Contrebis\Pso\WeightVector;

$constants = array(
    'phi1' => 0.15,
    'phi2' => 0.15,
    'vMax' => 0.5,
    'inertia' => 0.97,
);
$fitnessFunc = function (WeightVector $x) {
    // insert your fitness function here
    // too lazy to think of a good example now!
    // high values are good, low values are bad
    return 0;
};
$swarm = new Swarm($constants, 10, 2, $fitnessFunc);

for ($i = 0; $i < $iterations; $i++) {
    $swarm->go();
}

echo "$swarm";

TODO

• Add tests
• Refactor out responsibility for creating initial positions and velocities
• Pick and add a license