Affiliation: | 1. School of Finance, Nanjing Audit University, Jiangsu, 211815, China 2. Department of Mathematics and Finance, Yunyang Teachers’ College, Shiyan, 442000, Hubei, China 3. College of Information Science and Technology, Donghua University, Shanghai, 201620, China 4. School of Mathematics and Information, Yangtze University, Jingzhou, 434023, Hubei, China 5. College of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
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