Generalized accumulated GM(1,1) cosine model and its application

Abstract

Purpose

In practical engineering, there are various sequences. The purpose of this paper is to improve and put forward a new model.

Design/methodology/approach

Based on the generalized accumulated generating operation, the paper improved the GM(1,1) cosine model and proposed the GAGM(1,1) cosine model.

Findings

It is found that the GAGM(1,1) cosine model can satisfy many kinds of periodic sequences and the precision of GAGM(1,1) cosine model is higher than the GM(1,1) model.

Originality/value

The paper shows that the GAGM(1,1) cosine model has important theoretic and practical significance.

Citation

Junliang, L., Ruiquan, L. and Xiaochun, C. (2012), "Generalized accumulated GM(1,1) cosine model and its application", Grey Systems: Theory and Application, Vol. 2 No. 2, pp. 141-147. https://doi.org/10.1108/20439371211260117