基于社会化媒体公共话题挖掘的电力基础设施灾害状态感知
Condition Sensing for Electricity Infrastructure in Disasters by Mining Public Topics from Social Media
摘要：
及时和可靠地感知基础设施状况对于规划有效的基础设施重建的灾害管理至关重要。社会媒体作为一种近实时的信息源，在灾害中被广泛用于形成及时的态势感知。然而，使用社交媒体来感知电力基础设施状况尚未被探索。本研究旨在通过挖掘社会媒体中的公共话题来弥补研究空白。为了实现这一目的，我们提出了一种系统化和定制化的方法，其中（1）电力相关的社交媒体数据是由基于来自Transformers的双向编码器表示（BERT）开发的分类器提取的;以及（2）公共主题是用一元、二元和三元来建模的，以将社交媒体中基础设施条件的公式化表达结合起来。佛罗里达州的电力基础设施受到飓风厄玛的影响进行了研究，以说明和演示。结果表明，该方法能够感知电力基础设施状况的时间演变和地理差异。
英文摘要：
Timely and reliable sensing of infrastructure conditions is critical in disaster management for planning effective infrastructure restorations. Social media, a near real-time information source, has been widely used in disasters for forming timely situational awareness. Yet, using social media to sense electricity infrastructure conditions has not been explored. This study aims to address the research gap through mining public topics from social media. To achieve this purpose, we proposed a systematic and customized approach wherein (1) electricity-related social media data is extracted by the classifier developed based on Bidirectional Encoder Representations from Transformers (BERT); and (2) public topics are modeled with unigrams, bigrams, and trigrams to incorporate the formulaic expressions of infrastructure conditions in social media. Electricity infrastructures in Florida impacted by Hurricane Irma are studied for illustration and demonstration. Results show that the proposed approach is capable of sensing the temporal evolutions and geographic differences of electricity infrastructure conditions.
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