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Spatiotemporal anomaly detection through visual analysis of geolocated Twitter messages

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5 Author(s)
Thom, D. ; Visualization & Interactive Syst. Group, Univ. of Stuttgart, Stuttgart, Germany ; Bosch, H. ; Koch, S. ; Worner, M.
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Analyzing message streams from social blogging services such as Twitter is a challenging task because of the vast number of documents that are produced daily. At the same time, the availability of geolocated, realtime, and manually created status updates are an invaluable data source for situational awareness scenarios. In this work we present an approach that allows for an interactive analysis of location-based microblog messages in realtime by means of scalable aggregation and geolocated text visualization. For this purpose, we use a novel cluster analysis approach and distinguish between local event reports and global media reaction to detect spatiotemporal anomalies automatically. A workbench allows the scalable visual examination and analysis of messages featuring perspective and semantic layers on a world map representation. Our novel techniques can be used by analysts to classify the presented event candidates and examine them on a global scale.

Published in:

Pacific Visualization Symposium (PacificVis), 2012 IEEE

Date of Conference:

Feb. 28 2012-March 2 2012

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