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Fixed an array size issue because of ignored 0 value

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This commit is contained in:
Jeff Moser
2010-10-02 14:17:48 -04:00
parent 803a0816a8
commit c22683ab33
7 changed files with 25 additions and 20 deletions
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21
PHPSkills/TrueSkill/Factors/GaussianWeightedSumFactor.php
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@ -34,10 +34,9 @@ class GaussianWeightedSumFactor extends GaussianFactor
// The first weights are a straightforward copy
// v_0 = a_1*v_1 + a_2*v_2 + ... + a_n * v_n
$this->_weights[0] = array();
$variableWeightsLength = count($variableWeights);
$this->_weights[0] = \array_fill(0, count($variableWeights), 0);
for($i = 0; $i < $variableWeightsLength; $i++)
{
$weight = &$variableWeights[$i];
@ -53,7 +52,9 @@ class GaussianWeightedSumFactor extends GaussianFactor
{
$this->_variableIndexOrdersForWeights[0][] = $i;
}
$variableWeightsLength = count($variableWeights);
// The rest move the variables around and divide out the constant.
// For example:
// v_1 = (-a_2 / a_1) * v_2 + (-a3/a1) * v_3 + ... + (1.0 / a_1) * v_0
@ -61,19 +62,17 @@ class GaussianWeightedSumFactor extends GaussianFactor
$weightsLength = $variableWeightsLength + 1;
for ($weightsIndex = 1; $weightsIndex < $weightsLength; $weightsIndex++)
{
$currentWeights = array();
{
$currentWeights = \array_fill(0, $variableWeightsLength, 0);
$variableIndices = array();
$variableIndices = \array_fill(0, $variableWeightsLength + 1, 0);
$variableIndices[0] = $weightsIndex;
$currentWeightsSquared = array();
$currentWeightsSquared = \array_fill(0, $variableWeightsLength, 0);
// keep a single variable to keep track of where we are in the array.
// This is helpful since we skip over one of the spots
$currentDestinationWeightIndex = 0;
$variableWeightsLength = count($variableWeights);
$currentDestinationWeightIndex = 0;
for ($currentWeightSourceIndex = 0;
$currentWeightSourceIndex < $variableWeightsLength;