This work was supported by the National Natural Science Foundation of China (Grant No. 61673008), the Project of High-level Innovative Talents of Guizhou Province (Grant No. [2016]5651), the Major Research Project of The Innovation Group of The Education Department of Guizhou Province (Grant No. [2017]039), the Innovative Exploration Project of Guizhou University of Finance and Economics (Grant No. [2017]5736-015), the Project of Key Laboratory of Guizhou Province with Financial and Physical Features (Grant No. [2017]004), the Hunan Provincial Key Laboratory of Mathematical Modeling and Analysis in Engineering (Changsha University of Science and Technology) (Grant No. 2018MMAEZD21), the University Science and Technology Top Talents Project of Guizhou Province (Grant No. KY[2018]047), the Guizhou University of Finance and Economics (Grant No. 2018XZD01) and Key Project of Hunan Education Department (17A181). The authors would like to thank the referees and the editor for helpful suggestions incorporated into this paper. The authors declare that they have no competing interests.