Sentential structure and discourse parsing

Authors:
Livia Polanyi;Chris Culy;Martin van den Berg;Gian Lorenzo Thione;David Ahn
Affiliations:
FX Palo Alto Laboratory, Palo Alto, CA;FX Palo Alto Laboratory, Palo Alto, CA;FX Palo Alto Laboratory, Palo Alto, CA;FX Palo Alto Laboratory, Palo Alto, CA;FX Palo Alto Laboratory, Palo Alto, CA
Venue:
DiscAnnotation '04 Proceedings of the 2004 ACL Workshop on Discourse Annotation
Year:
2004

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Abstract

In this paper, we describe how the LIDAS System (Linguistic Discourse Analysis System), a discourse parser built as an implementation of the Unified Linguistic Discourse Model (U-LDM) uses information from sentential syntax and semantics along with lexical semantic information to build the Open Right Discourse Parse Tree (DPT) that serves as a representation of the structure of the discourse (Polanyi et al., 2004; Thione 2004a, b). More specifically, we discuss how discourse segmentation, sentence-level discourse parsing, and text-level discourse parsing depend on the relationship between sentential syntax and discourse. Specific discourse rules that use syntactic information are used to identify possible attachment points and attachment relations for each Basic Discourse Unit to the DPT.