About the Authors
- Xiaowei Zhao
- Wenyi Zhang
- Xin Xu
- Zhiqiang Ma
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* E-mail: zhiqiang.ma967@gmail.com (ZQM); minghao.yin197@gmail.com (MHY)
Affiliation College of Computer Science and Information Technology, Northeast Normal University, Changchun, People's Republic of China
- Minghao Yin
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* E-mail: zhiqiang.ma967@gmail.com (ZQM); minghao.yin197@gmail.com (MHY)
Affiliation College of Computer Science and Information Technology, Northeast Normal University, Changchun, People's Republic of China
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Wrote the paper: XWZ. Collected data: WYZ XX. Wrote codes: WYZ XX. Developed the web server: WYZ XX. Participated in the research design: ZQM MHY. Participated in the method assessment: ZQM MHY. Participated in preparation of the manuscript: ZQM MHY. Directed the research: XWZ. Read and approved the final manuscript: XWZ WYZ XX ZQM MHY.