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<?php
declare (strict_types = 1);
namespace Phpml\Classifier;
use Phpml\Classifier\Traits\Predictable;
use Phpml\Classifier\Traits\Trainable;
class NaiveBayes implements Classifier
{
use Trainable, Predictable;
/**
* @param array $sample
*
* @return mixed
*/
private function predictSample(array $sample)
$predictions = [];
foreach ($this->labels as $index => $label) {
$predictions[$label] = 0;
foreach ($sample as $token => $count) {
if (array_key_exists($token, $this->samples[$index])) {
$predictions[$label] += $count * $this->samples[$index][$token];
}
arsort($predictions, SORT_NUMERIC);
reset($predictions);
return key($predictions);
php-ai /
php-ml
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