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<?php
declare(strict_types=1);
namespace Phpml\NeuralNetwork\ActivationFunction;
use Phpml\NeuralNetwork\ActivationFunction;
class Gaussian implements ActivationFunction
{
/**
* @param float|int $value
*/
public function compute($value): float
return exp(- $value ** 2);
}
* @param float|int $calculatedvalue
public function differentiate($value, $calculatedvalue): float
return -2 * $value * $calculatedvalue;
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php-ml
