1. School of Computer Science and Engineering; Central South University; Changsha China
2. Center for Networked Computing; Temple University; Philadelphia Pennsylvania USA
3. Department of Computer and Information Sciences; Saint Joseph's University; Philadelphia Pennsylvania USA
4. Department of Computer Science; Fordham University; New York City New York USA
5. Department of Information Systems and Cyber Security; University of Texas at San Antonio; San Antonio Texas USA
6. School of Computer Science and Electronic Engineering; Hunan University; Changsha China
7. School of Computer Science; Guangzhou University; Guangzhou China