Passed
Push — master ( 9938cf...e83f7b )
by Arkadiusz
05:59
created

Gaussian::differentiate()   A

Complexity

Conditions 1
Paths 1

Duplication

Lines 0
Ratio 0 %

Size

Total Lines 4
Code Lines 2

Importance

Changes 0
Metric Value
dl 0
loc 4
rs 10
c 0
b 0
f 0
cc 1
eloc 2
nc 1
nop 2
1
<?php
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declare(strict_types=1);
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namespace Phpml\NeuralNetwork\ActivationFunction;
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use Phpml\NeuralNetwork\ActivationFunction;
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class Gaussian implements ActivationFunction
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{
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    /**
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     * @param float|int $value
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     */
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    public function compute($value): float
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    {
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        return exp(-pow($value, 2));
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    }
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    /**
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     * @param float|int $value
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     * @param float|int $calculatedvalue
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     */
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    public function differentiate($value, $calculatedvalue): float
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    {
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        return -2 * $value * $calculatedvalue;
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    }
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}
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