public static double[][] getLSIDocVectorComment() {
        double[][] decVec;
        metadataDao = new DaoMetadata();
        List<Metadata> metadata = metadataDao.read(LANGUAGE);

        decVec = new double[metadata.size()][2];
        for (int i = 0; i < metadata.size(); i++) {
            decVec[i][0] = metadata.get(i).getXDocVecComment();
            decVec[i][1] = metadata.get(i).getYDocVecComment();
        }
        return decVec;
    }