1. Department of Communication Engineering, Institute of Information Science Technology, Dalian Maritime University, Dalian, China
2. School of Software, Key Laboratory for Ubiquitous Network and Service Software of Liaoning Province, Dalian University of Technology, Dalian, China
3. DUT-RU International School of Information Science and Engineering and the Key Laboratory for Ubiquitous Network and Service Software of Liaoning Province, Dalian University of Technology, Dalian, China
4. Fuzzy Logic Systems Institute, Iizuka, Japan