40 lines
819 B
PHP
40 lines
819 B
PHP
<?php
|
|
|
|
declare (strict_types = 1);
|
|
|
|
namespace tests\Phpml\NeuralNetwork\ActivationFunction;
|
|
|
|
use Phpml\NeuralNetwork\ActivationFunction\Sigmoid;
|
|
|
|
class SigmoidTest extends \PHPUnit_Framework_TestCase
|
|
{
|
|
/**
|
|
* @param $beta
|
|
* @param $expected
|
|
* @param $value
|
|
*
|
|
* @dataProvider sigmoidProvider
|
|
*/
|
|
public function testSigmoidActivationFunction($beta, $expected, $value)
|
|
{
|
|
$sigmoid = new Sigmoid($beta);
|
|
|
|
$this->assertEquals($expected, $sigmoid->compute($value), '', 0.001);
|
|
}
|
|
|
|
/**
|
|
* @return array
|
|
*/
|
|
public function sigmoidProvider()
|
|
{
|
|
return [
|
|
[1.0, 1, 7.25],
|
|
[2.0, 1, 3.75],
|
|
[1.0, 0.5, 0],
|
|
[0.5, 0.5, 0],
|
|
[1.0, 0, -7.25],
|
|
[2.0, 0, -3.75],
|
|
];
|
|
}
|
|
}
|