Title :
A new grey Verhulst model and its application
Author :
Wang, Zhengxin ; Dang, Yaoguo ; Wang, Yemei
Author_Institution :
Nanjing Univ. of Aeronaut. & Astronaut., Nanjing
Abstract :
Based on the analysis of present grey Verhulst model, we use trapezoid formula to whiten the grey derivative item and educe a new grey Verhulst model, causing a better uniformity of parameters between the difference equation and differential equation in the grey model. The result indicates that the new modeling method proposed in this paper enhanced the grey derivative´s accuracy as well as the model´s precision of simulation and forecasting.
Keywords :
difference equations; forecasting theory; grey systems; parameter estimation; difference equation; differential equation; forecasting precision; grey Verhulst model; grey derivative item; parameter estimation; simulation precision; trapezoid formula; Biological system modeling; Difference equations; Differential equations; Econometrics; Economic forecasting; Intelligent systems; Parameter estimation; Predictive models; Statistics; Technological innovation;
Conference_Titel :
Grey Systems and Intelligent Services, 2007. GSIS 2007. IEEE International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-1294-5
Electronic_ISBN :
978-1-4244-1294-5
DOI :
10.1109/GSIS.2007.4443339
