The Erg at MRP 2019: Radically compositional semantic dependencies

Abstract

The English Resource Grammar (ERG) is a broad-coverage computational grammar of English that derives underspecified logical-form representations of meaning. Elementary Dependency Structures (EDS) and DELPH-IN MRS Bi-Lexical Dependencies (DM) are graph-based simplifications of ERG meaning representations. As a point of reference outside the official competition of the 2019 Shared Task on Cross-Framework Meaning Representation Parsing, we evaluate ERG-derived EDS and DM graphs. These graphs yield higher accuracy scores than the purely data-driven parsers in the shared task, suggesting that the general-purpose grammatical knowledge encoded in the ERG aids parsing into these meaning representations.