Gray I-PRAY Forecasting Method Based on the Difference Information Principle of Gray System

摘要：

For those sequence that the discrete degree is large, based on GM(1,1) model, Prof. Deng Ju-long proposed a forecasting method called gray envelope forecasting for its interval forecasting. But the envelope forecasting has two shortcomings: one is that its forecasting value is influenced by personal subjective desire; the other is that local information is ignored. Aiming at conquering the two problems, an objective forecasting method, called Gray PRAY forecasting, was put forward by Chen Yong-ming in 2007. However, the Gray PRAY forecasting method makes part use of local information. In this paper, in order to make full use of local information, based on the difference information principle of gray system theory, the mathematical tool, scalar product of vectors, is employed to generate an objective forecasting method, called Gray I-PRAY which connotes the improvement of Gray PRAY method.

作者: Chen Yong-ming

作者单位: College of Mathematics, Chengdu University of Information Technology, Chengdu, 610225, China

会议类型: 国际会议

会议名称: 2009 IEEE International Conference on Grey System and Intelligent Services(2009 IEEE灰色系统与服务科学国际会议)

会议地点: 南京

会议语种:英文

页码: 420-424

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）