php-ml/tests/Phpml/Clustering/DBSCANTest.php

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<?php
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declare(strict_types=1);
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namespace tests\Clustering;
use Phpml\Clustering\DBSCAN;
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use PHPUnit\Framework\TestCase;
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class DBSCANTest extends TestCase
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{
public function testDBSCANSamplesClustering()
{
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$samples = [[1, 1], [8, 7], [1, 2], [7, 8], [2, 1], [8, 9]];
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$clustered = [
[[1, 1], [1, 2], [2, 1]],
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[[8, 7], [7, 8], [8, 9]],
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];
$dbscan = new DBSCAN($epsilon = 2, $minSamples = 3);
$this->assertEquals($clustered, $dbscan->cluster($samples));
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$samples = [[1, 1], [6, 6], [1, -1], [5, 6], [-1, -1], [7, 8], [-1, 1], [7, 7]];
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$clustered = [
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[[1, 1], [1, -1], [-1, -1], [-1, 1]],
[[6, 6], [5, 6], [7, 8], [7, 7]],
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];
$dbscan = new DBSCAN($epsilon = 3, $minSamples = 4);
$this->assertEquals($clustered, $dbscan->cluster($samples));
}
}