为探究基础设施公众信任演化规律,有效防治极端气候事件网络舆情危机,以“7·20郑州特大暴雨”事件为例,爬取新浪微博有关海绵城市博文,运用内容分析、情感分析、曲线拟合方法识别信任维度、用户行为及其演化模式。研究表明危机由媒体从业者诚信维度信任损害开始,在其和精英复合维度舆论下爆发,而后在新闻机构权威解释中衰退,最终在普通个人持续却低影响的信任损害中平息。
In order to explore the trust evolution of infrastructures and effectively prevent the online public opinion crisis in extreme climate emergencies. Selecting the “July 20” extreme heavy rainstorm in Zhengzhou, China as the case. Public opinions of Sponge City projects on Sina Weibo were captured. Content analysis, sentiment analysis, and curve fitting method were conducted to identify trust dimensions, users’ behaviors, and evolution patterns. The results indicated that the crisis began with the opinions of integrity-based trust damage from media practitioners, then broke out with opinions of compound-dimensions trust in the guidance of elites and media practitioners. Afterwards, it declined in the authoritative explanation of news organization. In the end, the public opinion crisis subsided with the continuous but low-impact opinions of trust damage by individuals.
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