Paper: The Descent Of Hierarchy And Selection In Relational Semantics

ACL ID P02-1032
Title The Descent Of Hierarchy And Selection In Relational Semantics
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 2002
Authors

In many types of technical texts, meaning is embedded in noun compounds. A language un- derstanding program needs to be able to inter- pret these in order to ascertain sentence mean- ing. We explore the possibility of using an ex- isting lexical hierarchy for the purpose of plac- ing words from a noun compound into cate- gories, and then using this category member- ship to determine the relation that holds be- tween the nouns. In this paper we present the results of an analysis of this method on two- word noun compounds from the biomedical do- main, obtaining classification accuracy of ap- proximately 90%. Since lexical hierarchies are not necessarily ideally suited for this task, we also pose the question: how far down the hi- erarchy must the algorithm descend before all the terms within...