DRS at MRP 2020: Dressing up Discourse Representation Structures as Graphs

Lasha Abzianidze, Johan Bos, S. Oepen

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    Abstract

    Discourse Representation Theory (DRT) is a formal account for representing the meaning of natural language discourse. Meaning in DRT is modeled via a Discourse Representation Structure (DRS), a meaning representation with a model-theoretic interpretation, which is usually depicted as nested boxes. In contrast, a directed labeled graph is a common data structure used to encode semantics of natural language texts. The paper describes the procedure of dressing up DRSs as directed labeled graphs to include DRT as a new framework in the 2020 shared task on Cross-Framework and Cross-Lingual Meaning Representation Parsing. Since one of the goals of the shared task is to encourage unified models for several semantic graph frameworks, the conversion procedure was biased towards making the DRT graph framework somewhat similar to other graph-based meaning representation frameworks.
    Original languageEnglish
    Title of host publicationProceedings of the CoNNL 2020 Shared Task
    Subtitle of host publicationCross-Framework Meaning Representation Parsing
    EditorsStephan Oepen, Omri Abend, Lasha Abzianidze, Johan Bos, Jan Hajič, Daniel Hershcovich, Bin Li, Tim O'Gorman, Nianwen Xue, Daniel Zeman
    PublisherAssociation for Computational Linguistics (ACL)
    Pages23-32
    Number of pages10
    DOIs
    Publication statusPublished - 2020

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