Paper: A Principle-Based Hierarchical Representation Of LTAGs

ACL ID C96-1034
Title A Principle-Based Hierarchical Representation Of LTAGs
Venue International Conference on Computational Linguistics
Session Main Conference
Year 1996

Lexicalized Tree Adjoining Grammars have proved useful for NLP. However, numerous redundancy problems face LTAGs developers, as highlighted by Vijay- Shanker and Schabes (92). We present a compact hierarchical organization of syntactic descriptions, that is linguistically motivated and a tool that automatically generates the tree families of an LTAG. The tool starts from the syntactic hierarchy and principles of well-formedness and carries out all the relevant combinations of linguistic phenomena. 1 Lexicalized TAGs Lexicalized Tree Adjoining Grammar (LTAG) is a formalism integrating lexicon and grammar (Joshi, 87; Schabes et al. , 88). It has both linguistic advantages (e.g elegant handling of unbounded dependencies and idioms) and computational advantages, particularly due to lexicalizat...