| [1] | Daniela Pohl, Abdelhamid Bouchachia, Hermann Hellwagner, Automatic Identification of Crisis-Related Sub-Events using Clustering, In 11th International Conference on Machine Learning and Applications (Jiawei Han, Taghi M Khoshgoftaar, Xingquan Zhu, eds.), IEEE, Los Alamitos, CA, USA, pp. 333-338, 2012.
[bib][url] [pdf] [abstract]
Abstract: Social media are becoming an important instrument for supporting crisis management, due to their broad acceptance and the intensive usage of mobile devices for accessing them. Social platforms facilitate collaboration among the public during a crisis and also support after-the-fact analysis. Thus, social media are useful for the processes of understanding, learning, and decision making. In particular, having information from social networks in a suitable, ideally summarized, form can speed up such processes. The present study relies on Flickr and YouTube as social media and aims at automatically identifying individual sub-events within a crisis situation. The study applies a two-phase clustering approach to detect those sub-events. The first phase uses geo-referenced data to locate a sub-event, while the second phase uses the natural language descriptions of pictures and videos to further identify the ”what-about” of those sub-events. The results show high potential of this social media-based clustering approach for detecting crisis-related sub-events.
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