Title :
Improvements on grey models for non-equidistant sequence
Author :
Hanbin, Kuang ; Liu, Sifeng ; Fang, ZhiGeng
Author_Institution :
Coll. of Econ. & Manage., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
Being different from the typical direct modeling method and optimizing methods of background value, we use trapezoid formula and central difference quotient methods to whiten grey derivative and propose a grey modeling method for non-equidistant sequence based on the criteria of the minimum square error sum. The results show that the new model´s fitting precision and prediction precision is improved.
Keywords :
grey systems; mean square error methods; sequences; background value optimizing methods; central difference quotient methods; grey derivative; grey models; minimum square error sum; non-equidistant sequence; trapezoid formula; Agriculture; Fitting; Geometry; Intelligent systems; Kernel; Optimization methods; Power generation economics; Predictive models; Solid modeling; Technological innovation;
Conference_Titel :
Grey Systems and Intelligent Services, 2009. GSIS 2009. IEEE International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4914-9
Electronic_ISBN :
978-1-4244-4916-3
DOI :
10.1109/GSIS.2009.5408231
