PHP Classes

File: OO/func/activate.php

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File: OO/func/activate.php
Role: Auxiliary script
Content type: text/plain
Description: Auxiliary script
Class: PHP Neural Network Library
Implements a multilayer perceptron neural network
Author: By
Last change:
Date: 3 years ago
Size: 151 bytes
 

Contents

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<?php
namespace nn;
function sigmoid($x){
    return 1/(1+exp(-$x));
}
function sigmoid_diff($x){
    return $x*(1-$x);//sigmoid($x)*(1-sigmoid($x));
}