BANK OF ENGLISH AND BEYOND Hand-crafted parsers for functional annotation

The 200 million word corpus of the Bank of English was annotated morpholog­ ically and syntactically using the Englis h Constraint Gramm ar ana lyser, a rule­ based shallow parser developed at the Resea rch Unit for Comput ational Lin­ guistics, University of Helsinki. We discuss the annotation system and methods used in the corpus work , as well as the theoretical assumptions of the Constraint Gramma r syntax. Based on our experience in large-scale corpu s work, we argue for a deeper and more explicit, dependency-based syntactic representation. We present a new practical parsing system, the Functi onal Dependency Grammar parser, developed from the Con straint Grammar system, and discuss its suitabil­ ity for treebank annotation.

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