摘要
提出了对原始数据作指数变换与优化灰导数相结合的方法对GM(1,1)模型进行了改进.使预测精度大为提高,通过实例验证了所建模型的实用性与可靠性.
This paper has proposed to make exponential transformation to the original series after optimizing grey derivative . By this way, forecast accuracy is greatly improved. At last, the example proves the model's feasibility, practicality and reliability.
出处
《西华师范大学学报(自然科学版)》
2008年第2期157-160,共4页
Journal of China West Normal University(Natural Sciences)
基金
四川省教育厅自然科学基金资助项目(2006A077)
关键词
灰色预测模型
指数变换
优化
灰导数
grey prediction model
exponential transformation
optimize
grey derivative