Beijing Advanced Innovation Center for Future Internet Technology, Beijing University of Technology, Beijing, China.|Department of Life Science and Informatics, Maebashi Institute of Technology, Maebashi, Japan.|Department of Life Science and Informatics, Maebashi Institute of Technology, Maebashi, Japan.|Department of Life Science and Informatics, Maebashi Institute of Technology, Maebashi, Japan.|Beijing Advanced Innovation Center for Future Internet Technology, Beijing University of Technology, Beijing, China. zhong@maebashi-it.ac.jp.