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Explanation of terms of grey numbers and its operations

Sifeng Liu (Institute for Grey Systems Studies, Nanjing University of Aeronautics and Astronautics, Nanjing, China) (Centre for Computational Intelligence, De Montfort University, Leicester, UK)
Handan Rui (Institute for Grey Systems Studies, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Zhigeng Fang (Institute for Grey Systems Studies, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Yingjie Yang (Faculty of Technology, De Montfort University, Leicester, UK) (Institute for Grey Systems Studies, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Jeffrey Forrest (School of Business, Slippery Rock University, Slippery Rock, Pennsylvania, USA) (Institute for Grey Systems Studies, Nanjing University of Aeronautics and Astronautics, Nanjing, China)

Grey Systems: Theory and Application

ISSN: 2043-9377

Article publication date: 7 November 2016

112

Abstract

Purpose

The purpose of this paper is to present the terms of grey numbers and its operations.

Design/methodology/approach

The definitions of elementary terms about grey numbers and its operations are presented one by one.

Findings

The reader could know the basic explanation about the important terms about grey numbers and its operations from this paper.

Practical implications

Many of the colleagues thought that unified definitions of key terms would be beneficial for both the readers and the authors.

Originality/value

It is a fundamental work to standardise all the definitions of terms for a new discipline. It is also propitious to spread the universal principles of grey system theory.

Keywords

Acknowledgements

This work was supported by a Marie Curie International Incoming Fellowship under the 7th Framework Programme of the European Union, entitled “Grey Systems and Its Application to Data Mining and Decision Support” (Grant No. FP7-PEOPLE-IIF-GA-2013 -629051). It is also supported by a joint project of both the NSFC and the RS of the UK entitled “Grey System Theory and Computational Intelligence” (71111130211), a project of the Leverhulme Trust International Network entitled “Grey Systems and Its Applications” (IN-2014-020), and a project of the National Natural Science Foundation of China (71671091). Also, the authors would like to acknowledge the support provided by the Fundamental Research Funds for Central Universities (NP2015208), the Foundation for National Outstanding Teaching Group of China (No. 10td128). The authors are deeply in debt to Mr John Barrett who proofread the paper.

Citation

Liu, S., Rui, H., Fang, Z., Yang, Y. and Forrest, J. (2016), "Explanation of terms of grey numbers and its operations", Grey Systems: Theory and Application, Vol. 6 No. 3, pp. 436-441. https://doi.org/10.1108/GS-09-2016-0031

Publisher

:

Emerald Group Publishing Limited

Copyright © 2016, Emerald Group Publishing Limited

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