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handle correlation quantity

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This commit is contained in:
Dennis Eichhorn 2022-12-24 23:55:26 +01:00
parent af4dca3ee4
commit 476fc943e9
1 changed files with 6 additions and 3 deletions
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9
Business/Marketing/ArticleCorrelationAffinity.php
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@ -69,16 +69,19 @@ final class ArticleCorrelationAffinity
// create the random variables
foreach ($orders as $items) {
foreach ($possibleItems as $item) {
$this->items[$item][] = $items[$item];
$this->items[$item][] = $considerQuantity ? $items[$item] : (int) ($items[$item] > 0);
}
}
// create the affinity table
foreach ($possibleItems as $item1) {
foreach ($possibleItems as $item2) {
if ($item1 !== $item2 && !isset($this->affinity[$item1][$item2]) && !isset($this->affinity[$item2][$item1])) {
if ($item1 !== $item2
&& !isset($this->affinity[$item1][$item2])
&& !isset($this->affinity[$item2][$item1])
) {
$this->affinity[$item1][$item2] = Correlation::bravaisPersonCorrelationCoefficientPopulation($this->items[$item1], $this->items[$item2]);
$this->affinity[$item2][$item1] = $this->affinity[$item1][$item2];
$this->affinity[$item2][$item1] = $this->affinity[$item1][$item2]; // php automatically creates references!
}
}
}