At Last Parsing Is Now Operational

Abstract

Abstract Natural language analysis systems which combine knowledge-based and corpusbased methods are now becoming accurate enough to be used in various applications. We describe one such parsing system for Dutch, known as Alpino, and we show how corpus-based methods are essential to obtain accurate knowledge-based parsers. In particular we show a variety of cases where large amounts of parser output are used to improve the parser. Mots-clefs: