Accelerating genetic algorithm (AGA) and least square method(LSM) were used to solving the parameters of gray GM(1,1) model for the modellings of stable data sequence and unstable deta sequence, respectively.

• 对变化较平稳的数据和变化幅度较大的非平稳数据两种序列建立的 GM(1 ；1 )模型 ；分别用加速遗传算法 (AGA)和最小二乘法 (LSM)对模型参数求解 .