Résumé
Proceedings of The 12th Language Resources and Evaluation
Conference (2020) We present {Æ}THEL, a semantic compositionality dataset for written Dutch.
{Æ}THEL consists of two parts. First, it contains a lexicon of supertags for
about 900 000 words in context. The supertags correspond to types of the simply
typed linear lambda-calculus, enhanced with dependency decorations that capture
grammatical roles supplementary to function-argument structures. On the basis
of these types, {Æ}THEL further provides 72 192 validated derivations,
presented in four formats: natural-deduction and sequent-style proofs, linear
logic proofnets and the associated programs (lambda terms) for meaning
composition. {Æ}THEL's types and derivations are obtained by means of an
extraction algorithm applied to the syntactic analyses of LASSY Small, the gold
standard corpus of written Dutch. We discuss the extraction algorithm and show
how `virtual elements' in the original LASSY annotation of unbounded
dependencies and coordination phenomena give rise to higher-order types. We
suggest some example usecases highlighting the benefits of a type-driven
approach at the syntax semantics interface. The following resources are
open-sourced with {Æ}THEL: the lexical mappings between words and types, a
subset of the dataset consisting of 7 924 semantic parses, and the Python code
that implements the extraction algorithm.