50 lines
1.1 KiB
PHP
50 lines
1.1 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Phpml\Tests\NeuralNetwork\ActivationFunction;
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use Phpml\NeuralNetwork\ActivationFunction\BinaryStep;
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use PHPUnit\Framework\TestCase;
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class BinaryStepTest extends TestCase
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{
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/**
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* @dataProvider binaryStepProvider
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*/
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public function testBinaryStepActivationFunction($expected, $value): void
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{
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$binaryStep = new BinaryStep();
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$this->assertEquals($expected, $binaryStep->compute($value));
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}
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public function binaryStepProvider(): array
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{
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return [
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[1, 1],
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[1, 0],
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[0, -0.1],
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];
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}
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/**
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* @dataProvider binaryStepDerivativeProvider
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*/
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public function testBinaryStepDerivative($expected, $value): void
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{
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$binaryStep = new BinaryStep();
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$activatedValue = $binaryStep->compute($value);
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$this->assertEquals($expected, $binaryStep->differentiate($value, $activatedValue));
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}
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public function binaryStepDerivativeProvider(): array
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{
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return [
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[0, -1],
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[1, 0],
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[0, 1],
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];
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}
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}
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