Paper: Integrating a Unification-Based Semantics in a Large Scale Lexicalised Tree Adjoining Grammar for French

ACL ID C08-1032
Title Integrating a Unification-Based Semantics in a Large Scale Lexicalised Tree Adjoining Grammar for French
Venue International Conference on Computational Linguistics
Session Main Conference
Year 2008
Authors

In contrast to LFG and HPSG, there is to date no large scale Tree Adjoining Gram- mar (TAG) equiped with a compositional semantics. In this paper, we report on the integration of a unification-based se- mantics into a Feature-Based Lexicalised TAG for French consisting of around 6 000 trees. We focus on verb semantics and show how factorisation can be used to sup- port a compact and principled encoding of the semantic information that needs to be associated with each of the verbal elemen- tary trees. The factorisation is made possi- ble by the use of XMG, a high-level linguis- tic formalism designed to specify and com- pile computational grammars and in partic- ular, grammars based on non-local trees or tree descriptions.