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| | == CLIP Colloquium == |
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| The CLIP Colloquium is a weekly speaker series organized and hosted by CLIP Lab. The talks are open to everyone. Most talks are held at 11AM in AV Williams 3258 unless otherwise noted. Typically, external speakers have slots for one-on-one meetings with Maryland researchers before and after the talks; contact the host if you'd like to have a meeting. | | The CLIP Colloquium is a weekly speaker series organized and hosted by CLIP Lab. The talks are open to everyone. Most talks are held on Wednesday at 11AM online unless otherwise noted. Typically, external speakers have slots for one-on-one meetings with Maryland researchers. |
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| If you would like to get on the cl-colloquium@umiacs.umd.edu list or for other questions about the colloquium series, e-mail [mailto:jimmylin@umd.edu Jimmy Lin], the current organizer. | | If you would like to get on the clip-talks@umiacs.umd.edu list or for other questions about the colloquium series, e-mail [mailto:rudinger@umd.edu Rachel Rudinger], the current organizer. |
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| {{#widget:Google Calendar
| | For up-to-date information, see the [https://talks.cs.umd.edu/lists/7 UMD CS Talks page]. (You can also subscribe to the calendar there.) |
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| |title=Upcoming Talks
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| == 9/4/2013 and 9/11/2013: N-Minute Madness == | | === Colloquium Recordings === |
| | * [[Colloqium Recording (Fall 2020)|Fall 2020]] |
| | * [[Colloqium Recording (Spring 2021)|Spring 2021]] |
| | * [[Colloqium Recording (Fall 2021)|Fall 2021]] |
| | * [[Colloqium Recording (Spring 2022)|Spring 2022]] |
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| The people of CLIP talk about what's going on in N minutes.
| | === Previous Talks === |
| | * [[https://talks.cs.umd.edu/lists/7?range=past Past talks, 2013 - present]] |
| | * [[CLIP Colloquium (Spring 2012)|Spring 2012]] [[CLIP Colloquium (Fall 2011)|Fall 2011]] [[CLIP Colloquium (Spring 2011)|Spring 2011]] [[CLIP Colloquium (Fall 2010)|Fall 2010]] |
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| <b>Special location note</b>: on 9/4/2013, we'll be in AVW 4172.
| | == CLIP NEWS == |
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| | | * News about CLIP researchers on the UMIACS website [http://www.umiacs.umd.edu/about-us/news] |
| == 9/18/2013: Spatio-Temporal Crime Prediction using GPS- and Time-Tagged Tweets ==
| | * Please follow us on Twitter @ClipUmd[https://twitter.com/ClipUmd?lang=en] |
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| '''Speaker:''' [http://ptl.sys.virginia.edu/ptl/members/matthew-gerber Matthew Gerber], University of Virginia<br/>
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| '''Time:''' Wednesday, September 18, 2013, 11:00 AM<br/>
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| '''Venue:''' AVW 3258<br/>
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| 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.
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| '''About the Speaker''': 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, Matthew 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.
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| == 9/25/2013: CLIP Lab Meeting ==
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| Phillip will set the agenda.
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| == 10/2/2013: Title TBA ==
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| '''Speaker:''' [http://homepages.inf.ed.ac.uk/miles/ Miles Osborne], University of Edinburgh<br/>
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| '''Time:''' Wednesday, October 2, 2013, 11:00 AM<br/>
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| '''Venue:''' AVW 3258<br/>
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| == 10/9/2013: Semantics and Social Science: Learning to Extract International Relations from Political Context ==
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| '''Speaker:''' [http://brenocon.com/ Brendan O'Connor], Carnegie Mellon University<br/>
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| '''Time:''' Wednesday, October 9, 2013, 11:00 AM<br/>
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| '''Venue:''' AVW 3258<br/>
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| == 10/23/2013: Towards Minimizing the Annotation Cost of Certified Text Classification ==
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| '''Speaker:''' Mossaab Bagdouri, University of Maryland]<br/>
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| '''Time:''' Wednesday, October 23, 2013, 11:00 AM<br/>
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| '''Venue:''' AVW 3258<br/>
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| The common practice of testing a sequence of text classifiers learned on a growing training set, and stopping when a target value of estimated effectiveness is first met, introduces a sequential testing bias. In settings where the effectiveness of a text classifier must be certified (perhaps to a court of law), this bias may be unacceptable. The choice of when to stop training is made even more complex when, as is common, the annotation of training and test data must be paid for from a common budget: each new labeled training example is a lost test example. Drawing on ideas from statistical power analysis, we present a framework for joint minimization of training and test annotation that maintains the statistical validity of effectiveness estimates, and yields a natural definition of an optimal allocation of annotations to training and test data. We identify the development of allocation policies that can approximate this optimum as a central question for research. We then develop simulation-based power analysis methods for van Rijsbergen's F-measure, and incorporate them in four baseline allocation policies which we study empirically. In support of our studies, we develop a new analytic approximation of confidence intervals for the F-measure that is of independent interest.
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| == 10/30/2013: Title TBA ==
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| '''Speaker:''' Gary Kazantsev, Bloomberg LP<br/>
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| '''Time:''' Wednesday, October 30, 2013, 11:00 AM<br/>
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| '''Venue:''' AVW 3258<br/>
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| == Previous Talks ==
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| * [[CLIP Colloquium (Spring 2013)|Spring 2013]]
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| * [[CLIP Colloquium (Fall 2012)|Fall 2012]]
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| * [[CLIP Colloquium (Spring 2012)|Spring 2012]]
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| * [[CLIP Colloquium (Fall 2011)|Fall 2011]]
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| * [[CLIP Colloquium (Spring 2011)|Spring 2011]]
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| * [[CLIP Colloquium (Fall 2010)|Fall 2010]]
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