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浏览/检索结果: 共4条，第1-4条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序提交时间升序提交时间降序题名升序题名降序作者升序作者降序 Public Opinions and Concerns Regarding the Canadian Prime Minister's Daily COVID-19 Briefing: Longitudinal Study of YouTube Comments Using Machine Learning Techniques 期刊论文 JOURNAL OF MEDICAL INTERNET RESEARCH, 2021, 卷号: 23, 期号: 2, 页码: 12 作者:  Zheng, Chengda;  Xue, Jia;  Sun, Yumin;  Zhu, Tingshao 收藏  |  浏览/下载：22/0  |  提交时间：2021/04/19 Canada  PM Trudeau  YouTube  machine learning  big data  infodemiology  infodemic  public concerns  communication  concern  social media  video   Twitter Discussions and Emotions About the COVID-19 Pandemic: Machine Learning Approach 期刊论文 JOURNAL OF MEDICAL INTERNET RESEARCH, 2020, 卷号: 22, 期号: 11, 页码: 14 作者:  Xue, Jia;  Chen, Junxiang;  Hu, Ran;  Chen, Chen;  Zheng, Chengda 收藏  |  浏览/下载：22/0  |  提交时间：2021/03/01 machine learning  Twitter data  COVID-19  infodemic  infodemiology  infoveillance  public discussion  public sentiment  Twitter  social media  virus   Public discourse and sentiment during the COVID 19 pandemic: Using Latent Dirichlet Allocation for topic modeling on Twitter 期刊论文 PLOS ONE, 2020, 卷号: 15, 期号: 9, 页码: 12 作者:  Xue, Jia;  Chen, Junxiang;  Chen, Chen;  Zheng, Chengda;  Li, Sijia 收藏  |  浏览/下载：15/0  |  提交时间：2020/11/30 Attenuated Salmonella choleraesuis-mediated RNAi targeted to conserved regions against foot-and-mouth disease virus in guinea pigs and swine 期刊论文 VETERINARY RESEARCH, 2010, 卷号: 41, 期号: 3 作者:  Cong, Wei;  Jin, Hong;  Jiang, Chengda;  Yan, Weiyao;  Liu, Mingqiu 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/19 foot-and-mouth disease virus  RNA interference  Salmonella choleraesuis  conserved sequence  swine