Documer\Documer::guess PHP Method

    public function guess($text)
    {
        $scores = array();
        $words = $this->parse($text);
        $labels = $this->getStorage()->getDistinctLabels();
        foreach ($labels as $label) {
            $logSum = 0;
            foreach ($words as $word) {
                $wordTotalCount = $this->getStorage()->getWordCount($word);
                if ($wordTotalCount == 0) {
                    continue;
                } else {
                    $wordProbability = $this->getStorage()->getWordProbabilityWithLabel($word, $label);
                    $wordInverseProbability = $this->getStorage()->getInverseWordProbabilityWithLabel($word, $label);
                    /**
                     * Prevent division with zero
                     */
                    if ($wordProbability + $wordInverseProbability == 0) {
                        continue;
                    }
                    $wordicity = $this->getWordicity($wordTotalCount, $wordProbability, $wordInverseProbability);
                }
                /**
                 * logs to avoid "floating point underflow",
                 */
                $logSum += log(1 - $wordicity) - log($wordicity);
            }
            /**
             * undo the log function and get back to 0-1 range
             */
            $scores[$label] = 1 / (1 + exp($logSum));
        }
        return $scores;
    }