The First Shared Task on Discourse Representation Structure Parsing

Lasha Abzianidze*, Rik Noord, van, Hessel Haagsma, Johan Bos

*Bijbehorende auteur voor dit werk

    OnderzoeksoutputAcademicpeer review

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    The paper presents the IWCS 2019 shared task on semantic parsing where the goal is to produce Discourse Representation Structures (DRSs) for English sentences. DRSs originate from Discourse Representation Theory and represent scoped meaning representations that capture the semantics of negation, modals, quantification, and presupposition triggers. Additionally, concepts and event-participants in DRSs are described with WordNet synsets and the thematic roles from VerbNet. To measure similarity between two DRSs, they are represented in a clausal form, i.e. as a set of tuples. Participant systems were expected to produce DRSs in this clausal form. Taking into account the rich lexical information, explicit scope marking, a high number of shared variables among clauses, and highly-constrained format of valid DRSs, all these makes the DRS parsing a challenging NLP task. The results of the shared task displayed improvements over the existing state-of-the-art parser.
    Originele taal-2English
    TitelProceedings of the IWCS Shared Task on Semantic Parsing
    UitgeverijAssociation for Computational Linguistics (ACL)
    Aantal pagina's15
    StatusPublished - 1-mei-2019
    EvenementShared Task on Semantic Parsing at IWCS 2019 -- Workshop - University of Gothenburg, Gothenburg, Sweden
    Duur: 27-mei-201927-mei-2019


    WorkshopShared Task on Semantic Parsing at IWCS 2019 -- Workshop
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