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<?php
/**
* This file is part of the Statistical Classifier package.
*
* (c) Cam Spiers <camspiers@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Camspiers\StatisticalClassifier\Normalizer\Token;
use Porter as PorterStemmer;
/**
* @author Cam Spiers <camspiers@gmail.com>
* @package Statistical Classifier
*/
class Porter implements NormalizerInterface
{
/**
* {@inheritdoc}
*/
public function normalize(array $tokens)
{
return array_map(
function ($token) {
return PorterStemmer::Stem(strtolower($token));
},
$tokens
);
}
}