摘要
在前人工作的基础之上介绍了几种修正的GM(1,1)非线性模型 ,并以衡阳市 1990～ 1996年城区污染物总量 (COD)的预测为例 ,探讨了各种模型的应用效果。结果表明 :非线性模型的拟合精度更高 。
The paper introduces some modified non-linear. gray models GM(1.1) based on former researchers' work and take the forcast of urban total pollutant quantity (COD) from 1990 to 1996 in Hengyang City as an example and the practical effects of various models are discussed . The results show that the non-linear model has higher precision with broaden development prospect.
基金
国家自然科学基金!(4 92 0 10 15)
教育部优秀青年教师基金
湖南省优秀中青年科技基金资助项目
