The Role of Local Influential Users in Spread of Situational Crisis Information
The Role of Local Influential Users in Spread of Situational Crisis Information
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DOI：
10.1093/jcmc/zmaa020
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Chao Fan;Yucheng Jiang;A. Mostafavi
中科院分区：
文献类型：
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作者：
Chao Fan;Yucheng Jiang;A. Mostafavi
广泛传播情况信息对社区应对危机/灾难很重要。在影响社交媒体信息传播的各种机制中，有影响力的用户在促进信息传播方面发挥着至关重要的作用。这项研究考察了2017年S飓风哈维期间，当地有影响力的用户的属性和活动，以及他们在推特上与普通用户的互动。结果表明，本地有影响力的用户之间的影响力呈无标度的幂定律分布，同时也表明了有影响力的用户之间的互动不足导致的信息传播的主要局限性。研究结果表明，有影响力的用户除了扮演信息枢纽的角色外，还应该扮演跨越边界和经纪的角色，以便更有效地加强态势信息的传播。
Extensive spread of situational information is important for communities in response to crises/disasters. Among various mechanisms affecting the spread of information on social media, influential users play a critical role in enhancing information spread. This study examines the attributes and activities of local influential users as well as their interactions with ordinary users on Twitter during 2017’s Hurricane Harvey. The results show that the influence across local influential users has a scale-free power law distribution and also indicates a major limitation in spreading information caused by insufficient interaction among influential users themselves. The findings suggest that influential users should play a boundary-spanning and brokerage role in addition to their information hub role in order to be more effective in enhancing the spread of situational information.