1. School of mathematics and computational sciences, Hunan university of science and technology, Xiangtan, Hunan province, China
2. School of mathematics and computational sciences, Hunan university of science and technology and Hunan Engineering Research Center for Big Data and Intelligent Decision-making of Industrial Development, Xiangtan, Hunan province, China and Hunan Engineering Research Center for Big Data and Intelligent Decision-making of Industrial Development, Xiangtan, China