php-ml/tests/Phpml/Classification/NaiveBayesTest.php

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2016-04-14 20:56:54 +00:00
<?php
declare (strict_types = 1);
namespace tests\Classification;
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use Phpml\Classification\NaiveBayes;
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class NaiveBayesTest extends \PHPUnit_Framework_TestCase
{
public function testPredictSingleSample()
{
$samples = [[5, 1, 1], [1, 5, 1], [1, 1, 5]];
$labels = ['a', 'b', 'c'];
$classifier = new NaiveBayes();
$classifier->train($samples, $labels);
$this->assertEquals('a', $classifier->predict([3, 1, 1]));
$this->assertEquals('b', $classifier->predict([1, 4, 1]));
$this->assertEquals('c', $classifier->predict([1, 1, 6]));
}
public function testPredictArrayOfSamples()
{
$trainSamples = [[5, 1, 1], [1, 5, 1], [1, 1, 5]];
$trainLabels = ['a', 'b', 'c'];
$testSamples = [[3, 1, 1], [5, 1, 1], [4, 3, 8], [1, 1, 2], [2, 3, 2], [1, 2, 1], [9, 5, 1], [3, 1, 2]];
$testLabels = ['a', 'a', 'c', 'c', 'b', 'b', 'a', 'a'];
$classifier = new NaiveBayes();
$classifier->train($trainSamples, $trainLabels);
$predicted = $classifier->predict($testSamples);
$this->assertEquals($testLabels, $predicted);
}
}