Jingga/phpOMS
1
0
Fork 0
mirror of https://github.com/Karaka-Management/phpOMS.git synced 2026-01-21 13:58:42 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Pulled out square function

Browse Source
This commit is contained in:
Dennis Eichhorn 2018-02-23 10:35:16 +01:00 committed by GitHub
parent 3f438238e7
commit a1b78de312
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 3 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
Math/Statistic/Forecast/Error.php
View File

@ -125,7 +125,7 @@ class Error
*/
public static function getMeanSquaredError(array $errors) : float
{
return Average::arithmeticMean(self::square($errors));
return Average::arithmeticMean(Functions::powerInt($errors, 2));
}
/**
@ -139,7 +139,7 @@ class Error
*/
public static function getRootMeanSquaredError(array $errors) : float
{
return sqrt(Average::arithmeticMean(self::square($errors)));
return sqrt(Average::arithmeticMean(Functions::powerInt($errors, 2)));
}
/**
@ -297,27 +297,6 @@ class Error
return Average::arithmeticMean($error);
}
/**
* Square all values in array.
*
* @param array $values Values to square
*
* @return array
*
* @since 1.0.0
* todo: move to utils?! implement sqrt for array as well... could be usefull for others (e.g. matrix)
*/
private static function square(array $values) : array
{
$squared = [];
foreach ($values as $value) {
$squared[] = $value * $value;
}
return $squared;
}
/**
* Get cross sectional scaled errors (CSSE)
*
@ -387,7 +366,7 @@ class Error
*/
public static function getMeanSquaredScaledError(array $scaledErrors) : float
{
return Average::arithmeticMean(self::square($scaledErrors));
return Average::arithmeticMean(Functions::powerInt($scaledErrors, 2));
}
/**