地理定位
社会化媒体
潜在Dirichlet分配
计算机科学
跟踪(教育)
数据科学
主题模型
地理标记
位置感知
情报检索
数据挖掘
万维网
计算机网络
心理学
教育学
作者
Marianela García Lozano,Jonah Schreiber,Joel Brynielsson
标识
DOI:10.1016/j.dss.2017.05.006
摘要
Tracking how discussion topics evolve in social media and where these topics are discussed geographically over time has the potential to provide useful information for many different purposes. In crisis management, knowing a specific topic's current geographical location could provide vital information to where, or even which, resources should be allocated. This paper describes an attempt to track online discussions geographically over time. A distributed geo-aware streaming latent Dirichlet allocation model was developed for the purpose of recognizing topics' locations in unstructured text. To evaluate the model it has been implemented and used for automatic discovery and geographical tracking of election topics during parts of the 2016 American presidential primary elections. It was shown that the locations correlated with the actual election locations, and that the model provides a better geolocation classification compared to using a keyword-based approach.
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