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Proceedings of the 2nd International Symposium on Information Processing (ISIP 2009)

Huangshan, China, August 21-23, 2009

Editors: Fei Yu, Jian Shu, and Guangxue Yue

AP Catalog Number: AP-PROC-CS-09CN002

ISBN: 978-952-5726-02-2 (Print), 978-952-5726-03-9 (CD-ROM)

Page(s): 313-315

Optimization of Grey Derivative in GM (1, 1) Based on the Discrete Exponential Sequence

        Yanna Sun and Yong Wei

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One improved approach of grey derivative in the direct GM (1, 1) is presented in this paper, which raises the modeling precision once again. The new model has been proven strictly to have the property of exponent, coefficient and translation constants superposition. The results of data simulation and model comparison show that the improved model in this paper raises the accuracy of background value, the fitting precision and forecasting precision. Moreover, it is not only suitable for the low growth sequence, but also suitable for the high growth sequence. What’s more, it is suitable for the nonhomogeneous exponential sequence.

Index Terms

GM (1, 1), grey derivative, optimization, exponential model

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