Uncharted Research
TopicOnTiles: Tile-Based Spatio-Temporal Event Analytics via Exclusive Topic Modeling on Social Media

Choi, M., S. Shin, J. Choi, S. Langevin, C. Bethune, P. Horne, N. Kronenfeld, R. Kannan, B. Drake, H. Park, J. Choo, ACM Conference on Human Factors in Computing Systems (CHI), April 2018

Detecting anomalous events of a particular area in a timely manner is an important task. Geo-tagged social media data are useful resources, but the abundance of everyday language in them makes this task still challenging. To address such challenges, we present TopicOnTiles, a visual analytics system that can reveal the information relevant to anomalous events in a multi-level tile-based map interface by using social media data. To this end, we adopt and improve a recently proposed topic modeling method that can extract spatio-temporally exclusive topics corresponding to a particular region and a time point.

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