灰色预测gm（1-1）算法，用于短期时间序列预测，包含残差检验等各种必要检验-Gray predicted all the necessary inspection gm (1-1) algorithm for short-term time series prediction, including residuals inspection

改进的GM（1，1）程序，可实现时间序列的灰色等维新息预测，采用弃旧纳新的原则。(The improved GM (1, 1) program, can realize the time series prediction using grey information renewal, discarding the old and new principles.)