A Discriminative Graph-Based Parser for the Abstract Meaning Representation

Jeffrey Flanigan,Sam Thomson,J. Carbonell,Chris Dyer,Noah A. Smith

Published 2014 in Annual Meeting of the Association for Computational Linguistics

ABSTRACT

Abstract Meaning Representation (AMR) is a semantic formalism for which a grow- ing set of annotated examples is avail- able. We introduce the first approach to parse sentences into this representa- tion, providing a strong baseline for fu- ture improvement. The method is based on a novel algorithm for finding a maxi- mum spanning, connected subgraph, em- bedded within a Lagrangian relaxation of an optimization problem that imposes lin- guistically inspired constraints. Our ap- proach is described in the general frame- work of structured prediction, allowing fu- ture incorporation of additional features and constraints, and may extend to other formalisms as well. Our open-source sys- tem, JAMR, is available at: http://github.com/jflanigan/jamr

PUBLICATION RECORD

  • Publication year

    2014

  • Venue

    Annual Meeting of the Association for Computational Linguistics

  • Publication date

    2014-06-01

  • Fields of study

    Computer Science

  • Identifiers
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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