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<?php
declare(strict_types=1);
namespace Phpml\NeuralNetwork\ActivationFunction;
use Phpml\NeuralNetwork\ActivationFunction;
class BinaryStep implements ActivationFunction
{
/**
* @param float|int $value
*/
public function compute($value): float
return $value >= 0 ? 1.0 : 0.0;
}
public function differentiate($value): float
if ($value === 0 || $value === 0.0) {
return 1;
return 0;
php-ai /
php-ml
