Paper: High Precision Extraction Of Grammatical Relations

ACL ID C02-1013
Title High Precision Extraction Of Grammatical Relations
Venue International Conference on Computational Linguistics
Session Main Conference
Year 2002

A parsing system returning analyses in the form of sets of grammatical relations can obtain high pre- cision if it hypothesises a particular relation only when it is certain that the relation is correct. We operationalise this technique—in a statistical parser using a manually-developed wide-coverage gram- mar of English—by only returning relations that form part of all analyses licensed by the grammar. We observe an increase in precision from 75% to over 90% (at the cost of a reduction in recall) on a test corpus of naturally-occurring text.