Title: Spatiotemporal Crime Prediction using GPS- and Time-Tagged Tweets
Department of Systems and Information Engineering
University of Virginia
Recent research has shown that social media messages (e.g.,
tweets) can be used to predict various large-scale events like elections
(Bermingham and Smeaton, 2011), infectious disease outbreaks (St. Louis
and Zorlu, 2012), and even national revolutions (Howard et al., 2011).
The essential hypothesis is that the timing, location, and content of
these messages are informative with regard to such future events. For
many years, the Predictive Technology Laboratory at the University of
Virginia has been constructing statistical prediction models of criminal
incidents (e.g., robberies and assaults), and we have recently found
preliminary evidence of Twitter’s predictive power in this domain (Wang,
Brown, and Gerber, 2012). In my talk, I will present an overview of our
crime prediction research with a specific focus on current
Twitter-based approaches. I will discuss (1) how precise locations and
times of tweets have been integrated into the crime prediction model,
and (2) how the textual content of tweets has been integrated into the
model via latent Dirichlet allocation. I will present current results of
our research in this area and discuss future areas of investigation.
Matthew Gerber joined the University of Virginia faculty in 2011 and is currently a Research Assistant Professor in the Department of Systems and Information Engineering. Prior to joining the University of Virginia, he was a Ph.D. candidate in the Department of Computer Science and Engineering at Michigan State University and a Visiting Instructor in the School of Computing and Information Systems at Grand Valley State University. In 2010, he received (jointly with Joyce Chai) the ACL Best Long Paper Award for his work on recovering null-instantiated arguments for semantic role labeling. His current research focuses on the semantic analysis of natural language text and its application to various prediction and informatics problems.
Dr. Joyce Chai