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Evacuations have a significant impact on saving human lives during hurricanes. However, as a complex dynamic process, it is typically difficult to know individual evacuation decisions in real-time. Since a large amount of information is continuously posted through social media platforms, we can use them to understand individual evacuation behavior. In this paper, we collect tweets during Hurricane Irma in 2017 and train a text classifier in an active learning way to distinguish tweets expressing positive evacuation decisions from both negative and irrelevant ones. Additionally, we perform a demographic analysis and content clustering to investigate the potential causes and correlates of evacuation decisions. The results can be used to help inform planning strategies of emergency response agencies.more » « less
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摘要 在过去20年里,政府在应急管理的各个阶段,特别是在灾害期间,对社交媒体的使用急剧增加。然而在美国,落实到地方政府层面,对社交媒体的使用依然是没有章法的。随着技术和社交媒体角色的发展,社交媒体在灾难中起到的社会技术方面的作用需要持续被理解。通过对县、州和联邦政府的26份飓风 "厄玛"行动后报告以及一个四小时的焦点小组会议的定性分析,我们得出了主要和次要主题,包括推式/拉式沟通、容载能力和技术问题、不一致的信息传递、单向与双向沟通、信息的时机和数据收集。得出以下结论:吸取的教训、仍然存在的挑战、组织学习的证据以及对未来研究的建议。 关键词:事后报告;应急管理;飓风厄玛;社交媒体more » « less
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