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Start of factor graph port. Things don't work yet, but a lot of syntax updates towards PHP

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This commit is contained in:
Jeff Moser
2010-09-18 11:11:44 -04:00
parent 4a76cc34cc
commit e434696b44
25 changed files with 1637 additions and 20 deletions
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38
PHPSkills/TrueSkill/Layers/TeamDifferencesComparisonLayer.php Normal file
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<?php
namespace Moserware\Skills\TrueSkill\Layers;
class TeamDifferencesComparisonLayer extends TrueSkillFactorGraphLayer
{
private $_epsilon;
private $_teamRanks;
public function __construct(TrueSkillFactorGraph $parentGraph, array $teamRanks)
{
parent::__construct($parentGraph);
$this->_teamRanks = $teamRanks;
$gameInfo = $this->getParentFactorGraph()->getGameInfo();
$this->_epsilon = DrawMargin::getDrawMarginFromDrawProbability($gameInfo->getDrawProbability(), $gameInfo->getBeta());
}
public function buildLayer()
{
$inputVarGroups = $this->getInputVariablesGroups();
$inputVarGroupsCount = count($inputVarGroups);
for ($i = 0; $i < $inputVarGroupsCount; $i++)
{
$isDraw = ($this->_teamRanks[$i] == $this->_teamRanks[$i + 1]);
$teamDifference = $inputVarGroups[$i][0];
$factor =
$isDraw
? new GaussianWithinFactor($this->_epsilon, $teamDifference)
: new GaussianGreaterThanFactor($this->_epsilon, $teamDifference);
$this->addLayerFactor($factor);
}
}
}
?>