Improvement on GM models  

作　　者：党耀国 刘思峰 刘斌 

机构地区：[1]CollegeofEconomicandManagement,NanjingUniversityofAeronauticsandAstronautics,Nanjing210016,P.R.China

出　　处：《Journal of Systems Engineering and Electronics》2004年第3期295-298,共4页系统工程与电子技术（英文版）

基　　金：This project was supported by Specially-Employed Professor Foundation of NUAA( 1009-260812);Ph. D Foundation of Na-tional Department of Education(20020287001);Natural Science Foundation of Jiangsu Province(BK2003211) ;Ph. D Foundation of Nanjing Unive

摘　　要：Since grey system theory was established by prof. Deng, GM models and their improvements have all taken the first vector of the original sequence as the initialization, which resulted to deficiency in making use of the latest information. Based on the principle, which new information should be used fully, we think it is scientific to pay more attention to the new information or endow them a more weigh. So, this paper deals with the GM improvement by taking the n-th vector as the initialization, and gets great improvement in forecasting precision. Last, we validate the practicability and reliability of the models with examples.Since grey system theory was established by prof. Deng, GM models and their improvements have all taken the first vector of the original sequence as the initialization, which resulted to deficiency in making use of the latest information. Based on the principle, which new information should be used fully, we think it is scientific to pay more attention to the new information or endow them a more weigh. So, this paper deals with the GM improvement by taking the n-th vector as the initialization, and gets great improvement in forecasting precision. Last, we validate the practicability and reliability of the models with examples.

关 键 词：GM model INITIALIZATION SEQUENCE forecasting. 

分 类 号：O159[理学—数学]