Institute of Systems Science, Academy of Mathematics and Systems Science, Chinese Academy of Sciences,Beijing 100190, China;
The Business School, Bournemouth University, 89 Holdenhurst Road, BH88EB, UK;
Research Center of Applied Finance, University of International Business and Economics, Beijing 100029,China;
Institute of Systems Science, Academy of Mathematics and Systems Science, Chinese Academy of Sciences,Beijing 100190, China;
