Some improved results on communication between information systems

Authors:
Ping Zhu;Qiaoyan Wen
Affiliations:
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China and State Key Laboratory of Networking and Switching, Beijing University of Posts and Telecommunication ...;State Key Laboratory of Networking and Switching, Beijing University of Posts and Telecommunications, Beijing 100876, China
Venue:
Information Sciences: an International Journal
Year:
2010

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Abstract

To study the communication between information systems, Wang et al. [C. Wang, C. Wu, D. Chen, Q. Hu, C. Wu, Communicating between information systems, Information Sciences 178 (2008) 3228-3239] proposed two concepts of type-1 and type-2 consistent functions. Some properties of such functions and induced relation mappings have been investigated there. In this paper, we provide an improvement of the aforementioned work by disclosing the symmetric relationship between type-1 and type-2 consistent functions. We present more properties of consistent functions and induced relation mappings and improve upon several deficient assertions in the original work. In particular, we unify and extend type-1 and type-2 consistent functions into the so-called neighborhood-consistent functions. This provides a convenient means for studying the communication between information systems based on various neighborhoods.