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The Journal of Grey System

ISSN: 0957-3720

Editor in Chief: Professor Sifeng Liu

Editorial Office

Dr Chaoqing Yuan, Editorial Office of the Journal of Grey System, Institute of Grey System Studies, Nanjing, China Email:

Editorial Team: See Below

Review Process: Double Blind Peer Reviewed
Established: 1989
Frequency: 4 issues per year

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Prof. Sifeng Liu Selected for Marie Curie - International Incoming Fellowship

Professor Sifeng Liu, the editor-in chief of the Journal of Grey System and Grey Systems: Theory and Application and a distinguished professor with Nanjing University of Aeronautics and Astronautics(NUAA) has been selected for the Marie Curie International Incoming Fellowships - FP7-PEOPLE- 2013-IIF, a plan under the 7th Research Framework Programme (FP7) of the European Commission, making him the first scholar engaged in grey system research selected to the plan.

Marie Curie International Incoming Fellowships is a special fund plan established by the European Commission to subsidize outstanding researchers outside EU countries, and aims at attracting outstanding international scholars to conduct research, transmission and exchange activities in Europe, thus developing mutually beneficial cooperation in scientific research.

Having engaged in grey system theory research for 30 years, Professor Liu has made important contributions to the theory initiated by Chinese scholars and has a high reputation across the world. In 1980s, he put forward series of new models and concepts such as Sequence operator, Absolute degree of grey incidence, Grey cluster evaluation model with fixed weight and Positioned coefficient of grey< matrix. Then in the 1990s, he proposed Buffer operator and its axiom system, Generalized degree of grey incidence, Grey number and measurement of its information content, LGPG drifting and positioning solution, the range suitable for GM(1,1) model, Grey-econometrics model, Grey Cobb-Douglass model, etc.

All of these achievements earned him great attention and recognition among domestic and foreign counterparts; some results were even specially introduced in many experts’ monographs. At the turn of the century, he proposed the concept of General grey numbers, the Grey algebraic system based on kernel and degree of greyness, the Even difference GM(1,1) model and the Original difference GM(1,1) model, as well as structuring a New model of grey incidence analysis based on visual angle of similarity and nearness, a Three dimensional model of grey incidence analysis, two new grey cluster evaluation model based on end-point and center-point mixed triangular whitenization weight functions. A Two-stage decision model with grey synthetic measure, and a new multi-attribute intelligent grey target decision model, were also proposed.

Appointed as a research professor by De Montfort University, Professor Liu will stay in Leicester, UK to engage in grey system theory research with the host Professor, Yingjie Yang. They will recruit and training PhD students who are interested in Grey System Research with both De Montfort University and NUAA. There are also opportunities for full scholarships and PhDs at the Institute for Grey Systems Studies(IGSS), NUAA, China. Both the Chinese University Program and the EU Program scholarship cover all tuition, board and lodging to encourage doctoral students from EU member countries to study and research in China in order to promote mutual understanding between China and EU members.


Top Cited Papers 2007-2012
Top Cited Papers 2013-2014
* Ranking based on ISI database and Google Scholar.


Introduction to Grey System Theory,
Deng Julong, Jnl of Grey System,
Vol 1, No 1, 1989.
The Current Developing Status on
Grey System Theory
Liu Si-Feng, Jnl of Grey System,
Vol 19, No 2, 2007.

PDF format, approx. 6.8 MB

[Please note that this sample paper derives from a scanned copy of the original article that has been put through an Optical Character Recognition (OCR) process which may have introduced errors not present in the original paper.]

PDF format, approx. 137 KB

Editorial Team of The Journal of Grey System

Editor-in-Chief: Professor Sifeng Liu

Director of the Institute for Grey Systems Studies and a Distinguished Professor of Nanjing University of Aeronautics and Astronautics, Nanjing, P. R. China; Research Professor of Centre for Computational Intelligence, De Montfort University, UK

E-mail: and

Director of the Editorial Office: Dr. Chaoqing Yuan

Associate Professor of the Institute for Grey Systems Studies, Nanjing University of Aeronautics and Astronautics, Nanjing, P. R. China


Founding Editor: Professor Julong Deng (in memorium)

Associate Editors

  • Professor Yingjie Yang, Centre for Computational Intelligence De Montfort University, UK
  • Professor Jeffrey Forrest, Mathematics Department, Slippery Rock University, USA
  • Professor Dash Wu, RiskLab, University of Toronto, Canada
  • Professor Xuerui Tan The First Affiliated Hospital of the Medical College, Shantou University, P. R. China

Publisher: Kumar Patel, Director, Research Information Ltd


Honorary Editor: Prof. Qun Lin, Academician of the China Academy of Sciences, Academy of Math. & Syst. Science, CAS, P.R. China

Editorial Advisory Board

  • Prof. Emil Scarlat , Bucharest University of Economics Romania
  • Prof. Jose L. Salmeron, University Pablo de Olavide, Spain
  • Prof. Alan Pearman, Leeds University, UK
  • Prof. David L. Olson, University of Nebraska-Lincoln, USA
  • Prof. Robert John, University of Nottingham, UK
  • Prof. J. Paulo Davim, University of Aveiro, Portugal
  • Prof. Ahmed Mehaoua, University of Paris Descartes, France
  • Prof. Edmundas K. Zavadskas, Vilnius Gediminas Technical U., Lithuania
  • Dr. Stefano Alvisi, University of Ferrara, Italy
  • Dr. Guo-Dong Li, Tokyo Metropolitan University, Japan
  • Dr. Patrick Siqueira da Rocha, Universidade Federal do Mato Grosso, Brazil
  • Prof. Diyar Akay, Gazi University, Turkey
  • Dr. Vipul Jain, Indian Institute of Technology Delhi, India
  • Prof. Cheng-Hsiung Hsieh, Chaoyang University of Technology, Taiwan
  • Prof. Der-Chiang Li,National Chen Kung University, Taiwan
  • Prof. Zhengpeng Wu, Communication U. of China, P.R.China
  • Prof. Guoping Wu, China University of Geosciences, P.R.China
  • Prof. Zhengxin Wang, Zhejiang U. of Finance and Economics, P.R.China
  • Prof. Wei Chen, Nanjing Audit University, P.R.China
  • Prof. Benhai Guo, Jiangsu University, P.R.China
  • Prof. Bo Zeng, Chongqing Technology and Business University, P.R.China
  • Dr. Wuyong Qian, Jiangnan University, P.R.China
  • Prof. Zaiwu Gong, Nanjing University of Information Science & Technology, P.R.China
  • Prof. Lizhi Cui, Anhui University of Technology, P.R.China
  • Prof. Chuanmin Mi, Nanjing University of Aeronautics and Astronautics, P.R.China
  • Prof.Hong Liu, Fuzhou University, P.R.China
  • Prof. Yuhong Wang, Jiangnan University, P.R.China
  • Prof. Xiaoxin Chen, Jiangxi University of Finance and Economics, P.R.China
  • Prof. Miao Ma, Shanxi Normal University, P.R.China
  • Prof. Qiuping Wang, Xi’an University of Technology, P.R.China
  • Prof. Shuhua Mao, Wuhan University of Technology, P.R.China
  • Prof. Lirong Jian, Nanjing U. of Aero. and Astro., P.R.China
  • Prof. Yuan Liu, Zhejiang Normal University, P.R.China
  • Prof. Lizhong Duan, Beijing U. of Chinese Medicine, P.R.China
  • Prof. Jianzhong Xu, Harbin Engineering University, P.R.China
  • Prof. Sizhe Li, Beijing Jiaotong University, P.R.China
  • Prof. Ruilin Guo, Anyang Institute of Technology, P.R.China
  • Prof. Yunxian Hou, China Agricultural University, P.R.China
  • Prof. Xican Li, Shandong Agricultural University, P.R.China
  • Prof. Fenyi Dong, Henan Agricultural University, P.R.China
  • Prof. He Ren, Commercial Aircraft Corporate of China, P.R.China

The Journal of Grey System contributes to the advance of knowledge directly related to the fundamental theory and practical applications of Grey System. All the papers on developments of methodology, modeling technological and practical applications of Grey System are welcome. It aims to foster a professional platform between leading scientists and practitioners from around the world to express their concerns, describe new methods, models, techniques and discuss application skill with grey system, as well as various contributions of hybrid approaches combining grey system theory with other theories for tackling uncertain information more effectively and efficiently. In brief, the journal encourages and focuses on the development of functional methods, models, techniques and applications of Grey System.


The journal is a forum of the highest professional quality for both scientists and practitioners to exchange ideas and publish new discoveries on a vast array of topics and issues in grey system. It aims to bring forth anything from either innovative to known theories or practical applications in grey system. It provides everyone opportunities to present, criticize, and discuss their findings and ideas with others. A number of areas of particular interest (but not limited) are listed as follows:

  • Grey mathematics
  • Generator of Grey Sequences
  • Grey Incidence Analysis Models
  • Grey Clustering Evaluation Models
  • Grey Prediction Models
  • Grey Decision Making Models
  • Grey Programming Models
  • Grey Input and Output Models
  • Grey Control
  • Grey Game
  • Practical Applications.


The journal will be the most important forum of the highest professional quality. Both scientists and practitioners can exchange ideas and publish new discoveries on a vast array of topics and issues in grey system theory.

  • Research information Broadcast: It provides state-of-art information on new developments and trends in grey system theory
  • Research Idea Distribution: It provides everyone opportunities to present, criticize, and discuss findings, theories, and ideas with others
  • Research Outcome Dissemination: It offers everyone chances to bring forth case studies and share experience in applying grey system models, methods and techniques to solve practical problems.

Key Journal Audience

The journal will be of special interest to both researchers in grey system theory and practitioners who apply theories to real world problems. Target groups of the journal are:

  • Academic Researchers: including professors/associate professor, Senior lecturers/lecturers and other members of staff (e.g. research fellows, research associates, postdoctoral fellow) working with grey system theory.
  • Practitioners: consisting of people working in consulting companies, officials from different levels of government
  • Undergraduates: Master’s and PhD students in various majors such as Management Sciences, Industrial Engineering and Business are also among the groups the journal intends to reach.

List of Conferences

  • IEEE International Conference on Grey System and Intelligent Service
  • GSSC Annual Conference on Grey System in Mainland China
  • Annual Conference on Grey System in Taiwan of China
  • Annual IEEE International Conference on System, Man and Cybernetics
  • WOSC International Congress of Cybernetics and System
  • International Conference on Industrial Management.

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Contact the Editorial team

Institute for Grey System Studies
Nanjing University of Aeronautics and Astronautics,
150 Box of Jiangning District,
Nanjing 211106, China
Editor-in-Chief: Professor Sifeng Liu

Director of the Editorial Office: Dr. Chaoqing Yuan
Tel: +86-25-8489-3190-1020 (O) Fax: +86-25-8489-6149

More information can be found at:

Publisher: Kumar Patel


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