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Niu, Zhirui

Zhang, Shaokang

Ma, Mengfan

Wang, Zhenyang

Zhao, Hanyang

Wang, Yingying

Funding for this research was provided by:

National Natural Science Foundation of China (21866031)

Natural Science Foundation of Shaanxi Province (2018JM2054)

Yan'an University Doctor Scientific Research Start Fund Project (YDBK2017)

Yan'an University guiding Project (YDY2017-10)

Yan'an University Undergraduate Training Programs for Innovation and Entrepreneurship (D2017110)

Special Scientific Research Project of Education Department of Shaanxi Province (18JK0879)

Text and Data Mining valid from 2018-12-18