private double calc_LID(){
        double sum = 0.0;

        for (int i = 1; i < k; i++){
            sum += Math.log(knnResult.get(i).distToQueryPoint() / knnResult.get(k-1).distToQueryPoint());
        }

        double avg = sum * (1/k);

        return -(Math.pow(avg, -1));
    }