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- 874 creator makoto-okazaki.
- 874 creator takeshi-sakaki.
- 874 creator yutaka-matsuo.
- 874 type InProceedings.
- 874 label "Earthquake Shakes Twitter Users: Real-time Event Detection by Social Sensors".
- 874 sameAs 874.
- 874 abstract "Twitter, a popular microblogging service, has received much attention recently. An important characteristic of Twitter is its real-time nature. For example, when an earthquake occurs, people make many Twitter posts (tweets) related to the earthquake, which enables detection of earthquake occurrence promptly, simply by observing the tweets. As described in this paper, we investigate the real-time interaction of events such as earthquakes, in Twitter, and propose an algorithm to monitor tweets and to detect a target event. To detect a target event, we devise a classifier of tweets based on features such as the keywords in a tweet, the number of words, and their context. Subsequently, we produce a probabilistic spatiotemporal model for the target event that can find the center and the trajectory of the event location. We consider each Twitter user as a sensor and apply Kalman filtering and particle filtering, which are widely used for location estimation in ubiquitous/pervasive computing. As an application, we construct an earthquake reporting system in Japan. Because of the numerous earthquakes and the large number of Twitter users throughout the country, we can detect an earthquake by monitoring tweets with high probability (96\% of earthquakes of Japan Meteorological Agency (JMA) seismic intensity scale 3 or more are detected). Our system detects earthquakes promptly and sends e-mails to registered users. In many cases, the e-mails can be received before an earthquake actually arrives. Notification is delivered much faster than the announcements that are broadcast by the JMA.".
- 874 hasAuthorList authorList.
- 874 isPartOf proceedings.
- 874 keyword "Social media".
- 874 keyword "blog analysis".
- 874 title "Earthquake Shakes Twitter Users: Real-time Event Detection by Social Sensors".