1. Department of Applied MathematicsSchool of Science, Xi'an University of Posts and Telecommunications Xi'an China
2. Shaanxi Key Laboratory of Network Data Analysis and Intelligent ProcessingXi'an University of Posts and Telecommunications Xi'an China
3. Business SchoolSichuan University Chengdu China
4. Faculty of Information TechnologyHo Chi Minh City University of Technology (HUTECH) Ho Chi Minh City Vietnam
5. Faculty of Software and Information ScienceIwate Prefectural University Takizawa Iwate Japan