1. Guangxi Key Laboratory of Embedded Technology and Intelligent System, Guilin, China.
2. College of Information Science and Engineering, Guilin University of Technology, Guilin, China.
3. State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau, China.
4. Faculty of Applied Sciences, Macao Polytechnic University, Macao, China.
5. College of Computer Science and Electronic Engineering, Hunan University, Changsha, China.