Title :
The improvement method of DGM (1,1) based on time coefficient-amended 1
Author :
Wu zi-heng ; Yang Ai-ping ; Dai Wen-zhan
Author_Institution :
Dept. of Autom. Control, Zhejiang Sci-Tech Univ., Hangzhou, China
Abstract :
A new method to improve DGM (1, 1) model based on time coefficient-amended is put forward. Firstly the equal interval with time coefficient is amended and the computing method is given. Secondly the improved DGM (1, 1) model is applied in some cases. The application results show that forecast precision of the improved DGM (1, 1) model has been improved greatly.
Keywords :
forecasting theory; grey systems; DGM (1,1); equal interval; forecast precision; grey system; time coefficient-amended; DGM (1, 1) model; time coefficient;
Conference_Titel :
Grey Systems and Intelligent Services (GSIS), 2011 IEEE International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-61284-490-9
DOI :
10.1109/GSIS.2011.6044064
