[目的/意义]以中国政府的责任为依据划分不同类别重大事故,针对不同类别重大事故分析其舆情传播与舆情演化特点.[方法/过程]以上海外滩踩踏事故、马航失踪事故、昆明暴恐案为例,收集从事故发生至事故讨论基本结束阶段新浪新闻、新浪微博、天涯论坛上相关新闻与用户评论,利用社会网络分析及内容分析.[结果/结论]得出不同类别重大事故舆情传播深度相似,意见领袖特点相似,但舆情演化过程特点有区别.%[purpose/significance] Major accidents are classified based on the responsibility of the Chinese government,characteristics of public opinion diffusion and public opinion evolution in different types of major accidents are analyzed.[Method/process]Take Shanghai,the Bund stampede,Malaysia Airlines missing,Kunming terrorist explosion as the different type representatives,collecting related news and user reviewsfrom Sina News,Sina Weibo,and Tianya forumspanning from the incidence of the accident to almost no people's discussion on the accident,using social network analysis and content analysis.[Result/Conclusion]The results show that the depth of public opinion diffusion and the features of opinion leaders of different types of major accidents are similar,but the evolution process of public opinion is different.
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