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This commit is contained in:
Jens True
2023-08-01 12:13:24 +00:00
parent 068b6f18aa
commit d5bba04f4f
15 changed files with 72 additions and 73 deletions

16
src/TrueSkill/TruncatedGaussianCorrectionFunctions.php

@ -17,9 +17,8 @@ class TruncatedGaussianCorrectionFunctions
* @param $teamPerformanceDifference
* @param number $drawMargin In the paper, it's referred to as just "ε".
* @param $c
* @return float
*/
public static function vExceedsMarginScaled($teamPerformanceDifference, $drawMargin, $c)
public static function vExceedsMarginScaled($teamPerformanceDifference, float|int $drawMargin, $c): float
{
return self::vExceedsMargin($teamPerformanceDifference / $c, $drawMargin / $c);
}
@ -44,14 +43,13 @@ class TruncatedGaussianCorrectionFunctions
* @param $teamPerformanceDifference
* @param $drawMargin
* @param $c
* @return float
*/
public static function wExceedsMarginScaled($teamPerformanceDifference, $drawMargin, $c)
public static function wExceedsMarginScaled($teamPerformanceDifference, float|int $drawMargin, $c): float
{
return self::wExceedsMargin($teamPerformanceDifference / $c, $drawMargin / $c);
}
public static function wExceedsMargin($teamPerformanceDifference, $drawMargin)
public static function wExceedsMargin($teamPerformanceDifference, $drawMargin): float
{
$denominator = GaussianDistribution::cumulativeTo($teamPerformanceDifference - $drawMargin);
@ -69,13 +67,13 @@ class TruncatedGaussianCorrectionFunctions
}
// the additive correction of a double-sided truncated Gaussian with unit variance
public static function vWithinMarginScaled($teamPerformanceDifference, $drawMargin, $c)
public static function vWithinMarginScaled($teamPerformanceDifference, float|int $drawMargin, $c): float
{
return self::vWithinMargin($teamPerformanceDifference / $c, $drawMargin / $c);
}
// from F#:
public static function vWithinMargin($teamPerformanceDifference, $drawMargin)
public static function vWithinMargin($teamPerformanceDifference, $drawMargin): float
{
$teamPerformanceDifferenceAbsoluteValue = abs($teamPerformanceDifference);
$denominator =
@ -101,13 +99,13 @@ class TruncatedGaussianCorrectionFunctions
}
// the multiplicative correction of a double-sided truncated Gaussian with unit variance
public static function wWithinMarginScaled($teamPerformanceDifference, $drawMargin, $c)
public static function wWithinMarginScaled($teamPerformanceDifference, float|int $drawMargin, $c): float
{
return self::wWithinMargin($teamPerformanceDifference / $c, $drawMargin / $c);
}
// From F#:
public static function wWithinMargin($teamPerformanceDifference, $drawMargin)
public static function wWithinMargin($teamPerformanceDifference, float|int $drawMargin)
{
$teamPerformanceDifferenceAbsoluteValue = abs($teamPerformanceDifference);
$denominator = GaussianDistribution::cumulativeTo($drawMargin - $teamPerformanceDifferenceAbsoluteValue)