public function getRDFaNormalizedRating()
    {
        $config = \OxidEsales\Eshop\Core\Registry::getConfig();
        $minRating = $config->getConfigParam("iRDFaMinRating");
        $maxRating = $config->getConfigParam("iRDFaMaxRating");

        $article = $this->getProduct();
        $count = $article->oxarticles__oxratingcnt->value;
        if (isset($minRating) && isset($maxRating) && $maxRating != '' && $minRating != '' && $count > 0) {
            $normalizedRating = [];
            $value = ((4 * ($article->oxarticles__oxrating->value - $minRating) / ($maxRating - $minRating))) + 1;
            $normalizedRating["count"] = $count;
            $normalizedRating["value"] = round($value, 2);

            return $normalizedRating;
        }

        return false;
    }