Title :
An Approach of the Grey Modeling Based on Cotangent Function Transformation
Author :
Guan Yeqing ; Liu Si-feng
Author_Institution :
Coll. of Economic & Manage., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing
Abstract :
In this paper, the method of trigonometric-power function transformation against modeling standardized data is put forward. It has been proved that the smooth degree of data sequence can be improved. This function transformation can greatly improve the smooth degree more than logarithmic function transformation and power function transformation. So the method can widen the range of application of grey modeling. At last, the practical result shows the effectiveness of the proposed approach.
Keywords :
forecasting theory; grey systems; cotangent function transformation; data sequence; grey modeling; logarithmic function transformation; trigonometric-power function transformation; Agriculture; Biological system modeling; Demand forecasting; Differential equations; Educational institutions; Environmental factors; Power generation economics; Power system modeling; Predictive models; Technology forecasting;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.1862
