1. Key Laboratory of Intelligent Information Processing in Universities of Shandong, Shandong Institute of Business and Technology, Yantai, 264005, CN
2. International Center for Dielectric Research, Xi’an Jiaotong Univ., Xi’an, 710049, CN (Corresponding author), e-mail: linzhonghai@hotmail.com
3. Key Laboratory of Intelligent Information Processing in Universities of Shandong, Shandong Institute of Business and Technology, Yantai, 264005, CN.
4. International Center for Dielectric Research, Xi’an Jiaotong Univ., Xi’an, 710049, CN.