Partial Dependency Parsing for Irish
Elaine Uí Dhonnchadha, Josef van Genabith · 2010
In this paper we present a partial dependency parser for Irish, in which Constraint Grammar (CG) rules are used to annotate dependency relations and grammatical functions in unrestricted Irish text.Chunking is performed using a regular-expression grammar which operates on the dependency tagged sentences.As this is the first implementation of a parser for unrestricted Irish text (to our knowledge), there were no guidelines or precedents available.Therefore deciding what constitutes a syntactic unit, and how it should be annotated, accounts for a major part of the early development effort.Currently, all tokens in a sentence are tagged for grammatical function and local dependency.Long-distance dependencies, prepositional attachments or coordination are not handled, resulting in a partial dependency analysis.Evaluations show that the partial dependency analysis achieves an f-score of 93.60% on development data and 94.28% on unseen test data, while the chunker achieves an f-score of 97.20% on development data and 93.50% on unseen test data.