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Start of journey to actually give real names to factor graph variables using more PHP style

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This commit is contained in:
Jeff Moser
2010-09-26 21:43:17 -04:00
parent f0f0ab7761
commit 5cb1919c21
6 changed files with 53 additions and 13 deletions
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39
PHPSkills/TrueSkill/Factors/GaussianWeightedSumFactor.php
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@ -227,9 +227,44 @@ class GaussianWeightedSumFactor extends GaussianFactor
$updatedVariables);
}
private static function createName($sumVariable, $variablesToSum, $variableWeights)
private static function createName($sumVariable, $variablesToSum, $weights)
{
return "TODO";
// TODO: Perf? Use PHP equivalent of StringBuilder? implode on arrays?
$result = (string)$sumVariable;
$result .= ' = ';
$totalVars = count($variablesToSum);
for($i = 0; $i < $totalVars; $i++)
{
$isFirst = ($i == 0);
if($isFirst && ($weights[$i] < 0))
{
$result .= '-';
}
$absValue = sprintf("%.2f", \abs($weights[$i])); // 0.00?
$result .= $absValue;
$result .= "*[";
$result .= (string)$variablesToSum[$i];
$result .= ']';
$isLast = ($i == ($totalVars - 1));
if(!$isLast)
{
if($weights[$i + 1] >= 0)
{
$result .= ' + ';
}
else
{
$result .= ' - ';
}
}
}
return $result;
}
}