1. School of Big Data and Software Engineering and the Key Laboratory of Dependable Service Computing in Cyber Physical Society of Ministry of Education, Chongqing University, Chongqing, China
2. School of Big Data and Software Engineering, Chongqing University, Chongqing, China
3. Department of Electrical and Computer Engineering, Binghamton University, State University of New York at Binghamton, Binghamton, NY, USA