1. School of Software and Technology, Dalian University of Technology, Dalian, Liaoning, China
2. Center of Mathematical Sciences and Applications, Harvard University, Cambridge, Massachusetts, U.S.A.; and Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass., U.S.A.
3. DUT-RU International School of Information Science & Engineering, Dalian University of Technology, Dalian, Liaoning, China; and Key Laboratory for Ubiquitous Network and Service Software of Liaoning Province, China
4. Department of Computer Science , Stony Brook University, Stony Brook, New York, U.S.A.