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30 lines
974 B
PHP
30 lines
974 B
PHP
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<?php
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declare (strict_types = 1);
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namespace tests\Classifier;
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use Phpml\Classifier\KNearestNeighbors;
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class KNearestNeighborsTest extends \PHPUnit_Framework_TestCase
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{
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public function testPredictSimpleSampleWithDefaultK()
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{
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$samples = [[1, 3], [1, 4], [2, 4], [3, 1], [4, 1], [4, 2]];
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$labels = ['a', 'a', 'a', 'b', 'b', 'b'];
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$classifier = new KNearestNeighbors();
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$classifier->train($samples, $labels);
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$this->assertEquals('b', $classifier->predict([3, 2]));
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$this->assertEquals('b', $classifier->predict([5, 1]));
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$this->assertEquals('b', $classifier->predict([4, 3]));
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$this->assertEquals('b', $classifier->predict([4, -5]));
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$this->assertEquals('a', $classifier->predict([2, 3]));
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$this->assertEquals('a', $classifier->predict([1, 2]));
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$this->assertEquals('a', $classifier->predict([1, 5]));
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$this->assertEquals('a', $classifier->predict([3, 10]));
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}
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}
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