特别完整的灰色预测算法，可以得到带预测数据的相对误差 pe，关联度 r，均方差比值c 小误差概率p，相对误差pe，关联度r，均方差比值c，小误差概率p。并判断数据适合做长期预测还是短期预测。(The grey prediction algorithm is especially complete, can be obtained with the relative prediction error of PE data, R correlation, variance ratio c small

计算灰色预测中数据的关联度 以及灰色模型的算法实现(Computing the correlation of data in grey prediction model and the algorithm realization of grey model)