Current:

I am a Ph.D. student in Computer Science at Indiana University, Bloomington. In May, 2010 I expect to graduate. My research involves studying the syntactic and semantic properties of subjective language. My adviser, Prof. Michael Gasser, heads the Grounding Lab where I frequently give talks. You can also find me at the Computational Linguistics Lunch.

Summer of 2009:

This summer I am interning at the Palo Alto Research Center (formally Xerox PARC.) I am working on a project in natural language processing. Although I am a member of the Computer Science Laboratory, I work with Natural Language Theory and Technology group.

Summer of 2008:

I interned at Umbria, J.D. Power and Associates, Boulder, CO. Working with Dr. Nicolas Nicolov, I helped to guide the construction of a corpus for structural sentiment analysis and researched ways of automatically annotating structural sentiment relations. Please see our ICWSM 2009 paper for details on part of this effort.

2001-2005:

In 2005, I received a B.S. in Computer Science from the University of Pittsburgh. While an undergrad, I worked with Prof. Janyce Wiebe on OpinionFinder, a publicly available system for sentence and expression-level subjectivity analysis.

Stay tuned for office hours.

• Jason S. Kessler and Nicolas Nicolov. Targeting Sentiment Expressions through Supervised Ranking of Linguistic Configurations. 3rd International AAAI Conference on Weblogs and Social Media (ICWSM 2009), 2009. San Jose, California. 17% acceptance rate.
  • PDF
  • BibTeX
  • Slides (pptx) or (SlideShare)
  • Video of the talk (via Videolectures)
  • Please contact us if you would like the corpus.
• Jason S. Kessler. Polling the Blogosphere: a rule-based approach to belief classification. International Conference on Weblogs and Social Media (ICWSM 2008), 2008. Seattle, Washington.
• Video (via Videolectures and synchronized to the slides).
• PDF
• BibTeX
• Slides (via SlideShare)
• Download the veridicality lexicon here.
• Theresa Wilson, Paul Hoffmann, Swapna Somasundaran, Jason Kessler, Janyce Wiebe; Yejin Choi, Claire Cardie; Ellen Riloff and Siddharth Patwardhan. OpinionFinder: A System for Subjectivity Analysis. Human Language Technology Conference/Conference on Empirical Methods in Natural Language Processing (HLT-EMNLP 2005), 2005. (demo)

• Miriam Eckert, Lyndsie Clark and Jason Kessler. Structural Sentiment and Entity Annotation Guidelines Batch 1 Version. Guidelines for annotation project conducted at J.D. Power and Associates, Boulder CO. 2008.
• Jason Kessler. A Corpus for Comparing Belief Classification Systems. Research conducted at Indiana University. 2008.
• Ralf Frieser and Jason Kessler. HelpAHobo: Panhandling in the 21st century. 2008.

• Reviewer, International Journal of Computers and Applications, 2009
• Reviewer, RANLP 2009
• Program committee member, ICWSM 2009
• External reviewer, MICAI 2008
• External reviewer, CITII 2008

• E-mail: here
• Office: The CRANIUM: Lindley Hall 406
• Mailing address:
  Computer Science Department
  Lindley Hall, Room 215
  Indiana University
  150 S. Woodlawn Ave.
  Bloomington, IN 47405, USA

• My TravelBlog: a journal I kept while traveling in Eastern Europe and Southeast Asia.
• The Dylan Pool: predict the songs Bob Dylan will play on his next tour and win a prize.
• A map of Rome showing the location of each Borromini building in the city.
• Richard Serra on Charlie Rose (14 December 2001)
• The Linguist's Search Engine.
• The Gallery of "Misused" Quotation Marks
• SIL's glossary of linguistic terms.
• A list of Wikipedia edits from notable organizations
• My Erdös number is less than or equal to 5 (via Claire Cardie ~ Raymond J. Mooney ~ Wolfgang Maass ~ Andras Hajnal)
• My research interests never included "the development and evaluation of tools for long-term digital preservation, including migration, file format identification, and facilitation of archival access." If you're interested in current related work in this area at IU, a good place to start is here.