Penn Discourse Treebank

A Penn Discourse Treebank is a Benchmark Task for Discourse-level Analysis.

• AKA: PDTB.
• See: Biomedical Discourse Relation Bank, Discourse Relation, News Article.

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References

• http://www.seas.upenn.edu/~pdtb/
  • ABSTRACT: The goal of the PDTB project is to develop a large scale corpus annotated with information related to discourse structure. While there are many aspects of discourse that are crucial to a complete understanding of natural language, the Penn Discourse Treebank (PDTB) focuses on encoding coherence relations associated with discourse connectives. The annotations include the argument structure of the connectives, thus exposing a clearly defined level of discourse structure which will support the extraction of a range of inferences associated with discourse connectives. Some other annotated features associated with discourse connectives and their arguments include sense distinctions for discourse connectives, and attribution-related features for both connectives and their arguments.

2007

• (Joshi, 2007) ⇒ Aravind K. Joshi. (2007). “Complexity of Dependencies in Natural Language." Presentation given at Simon Fraser University, Vancouver, Feb 22.
  • Annotation text source: the Wall Street Journal. Same as the Penn Treebank. 2304 articles, ~1M words.
  • PDTB first release (PDTB-1.0) appeared in March 2006.
  • http://www.seas.upenn.edu/~pdtb
  • PDTB final release (PDTB-2.0) is planned for April 2007.
  • Collaborators: Rashmi Prasad, Alan Lee, Nikhil Dinesh, Eleni Miltsakaki, and Bonnie Webber (U. Edinburgh)

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