php-ml/tests/Phpml/Math/Kernel/RBFTest.php

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<?php
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declare(strict_types=1);
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namespace test\Phpml\Math\Kernel;
use Phpml\Math\Kernel\RBF;
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use PHPUnit\Framework\TestCase;
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class RBFTest extends TestCase
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{
public function testComputeRBFKernelFunction(): void
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{
$rbf = new RBF($gamma = 0.001);
$this->assertEquals(1, $rbf->compute([1, 2], [1, 2]));
$this->assertEquals(0.97336, $rbf->compute([1, 2, 3], [4, 5, 6]), '', $delta = 0.0001);
$this->assertEquals(0.00011, $rbf->compute([4, 5], [1, 100]), '', $delta = 0.0001);
$rbf = new RBF($gamma = 0.2);
$this->assertEquals(1, $rbf->compute([1, 2], [1, 2]));
$this->assertEquals(0.00451, $rbf->compute([1, 2, 3], [4, 5, 6]), '', $delta = 0.0001);
$this->assertEquals(0, $rbf->compute([4, 5], [1, 100]));
}
}