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add distanceMetric for dbscan

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This commit is contained in:
Arkadiusz Kondas 2016-05-01 00:56:03 +02:00
parent 22963114c3
commit 26be771668
1 changed files with 8 additions and 2 deletions
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10
src/Phpml/Clustering/DBSCAN.php
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@ -4,6 +4,7 @@ declare(strict_types = 1);
namespace Phpml\Clustering; namespace Phpml\Clustering;
use Phpml\Math\Distance; use Phpml\Math\Distance;
use Phpml\Math\Distance\Euclidean;
class DBSCAN implements Clusterer class DBSCAN implements Clusterer
{ {
@ -25,12 +26,17 @@ class DBSCAN implements Clusterer
/** /**
* @param float $epsilon * @param float $epsilon
* @param int $minSamples * @param int $minSamples
* @param Distance $distanceMetric
*/ */
public function __construct($epsilon = 0.5, $minSamples = 3) public function __construct($epsilon = 0.5, $minSamples = 3, Distance $distanceMetric = null)
{ {
if (null === $distanceMetric) {
$distanceMetric = new Euclidean();
}
$this->epsilon = $epsilon; $this->epsilon = $epsilon;
$this->minSamples = $minSamples; $this->minSamples = $minSamples;
$this->distanceMetric = new Distance\Euclidean(); $this->distanceMetric = $distanceMetric;
} }
/** /**