This work was supported in part by the National Natural Science Foundation of China (No. 61573299), the Science and Technology Plan Project of Hunan Province (2016TP1020), the Open Fund Project of Hunan Provincial Key Laboratory of Intelligent Information Processing and Application for Hengyang Normal University (2017IIPAYB04), the Natural Science Foundation of Hunan Province (No. 2017JJ2011), and the Research Project of the Education Department of Hunan Province (No. 17A031).