1. School of Information Engineering, Inner Mongolia University of Science & Technology, Baotou, China
2. Key Laboratory of Computing Power Network and Information Security, Ministry of Education, Shandong Computer Science Center (National Supercomputer Center in Jinan), Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
3. School of Mines and Coal, Inner Mongolia University of Science & Technology, Baotou, China