Funding for this research was provided by:
National Natural Science Foundation of China (61661008)
Natural Science Foundation of Guangxi Province (2015GXNSFBA139256, 2016GXNSFCA380017, 2017GXNSFAA198180)
the funding of Overseas 100 Talents Program of Guangxi Higher Education
Research Project of Guangxi University of China (KY2016YB059)
Guangxi Key Lab of Multi-source Information Mining & Security (MIMS15-07)
Doctoral Research Foundation of Guangxi Normal University
Guangxi Experiment Centre of Information Science
Innovation Project of Guangxi Graduate Education (YCSZ2017055)
Article History
Received: 17 April 2017
Revised: 3 January 2018
Accepted: 26 February 2018
First Online: 8 March 2018