/**
* @param array $samples
*
* @return array
*/
public function cluster(array $samples)
{
$space = new Space(count($samples[0]));
foreach ($samples as $sample) {
$space->addPoint($sample);
}
$clusters = [];
foreach ($space->cluster($this->clustersNumber, $this->initialization) as $cluster) {
$clusters[] = $cluster->getPoints();
}
return $clusters;
}
public function updateCentroid()
{
if (!($count = count($this->points))) {
return;
}
$centroid = $this->space->newPoint(array_fill(0, $this->dimension, 0));
foreach ($this->points as $point) {
for ($n = 0; $n < $this->dimension; ++$n) {
$centroid->coordinates[$n] += $point->coordinates[$n];
}
}
for ($n = 0; $n < $this->dimension; ++$n) {
$this->coordinates[$n] = $centroid->coordinates[$n] / $count;
}
}
