Paper: Structure-Sharing In Lexical Representation

ACL ID P85-1032
Title Structure-Sharing In Lexical Representation
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 1985

The lexicon now plays a central role in our imple- mentation of a Head-driven Phrase Structure Grammar (HPSG), given the massive relocation into the lexicon of linguistic information that was carried by the phrase structure rules in the old GPSG system. HPSG's gram- max contains fewer tha4z twenty (very general) rules; its predecessor required over 350 to achieve roughly the same coverage. This simplification of the gram- max is made possible by an enrichment of the structure and content of lexical entries, using both inhcrit~nce mechanisms and lexical rules to represent thc linguis- tic information in a general and efficient form. We will argue that our mechanisms for structure-sharing not only provide the ability to express important linguistic generalizations about the lexicon, but also...