Title Hybrid Constraints for Robust Parsing: First Experiments and Evaluation
Author(s) Roberto Bartolini (1), Alessandro Lenci (2), Simonetta Montemagni (1), Vito Pirrelli (1) 

(1) Istituto di Linguistica Computazionale – CNR Area della Ricerca, via G. Moruzzi 1, 56100 Pisa, Italy; (2) Università di Pisa, Dipartimento di Linguistica,via Santa Maria, 36, 56100 Pisa, Italy

Session O22-EW
Abstract In this paper we present IDEAL+, a parsing architecture for Italian, which pursues the goal of pairing robustness with deep linguistic analysis by extending a shallow processing kernel with a pool of hybrid constraints for the incremental identification of grammatical relations. The parsing output takes the form of dependency structures representing the full range of instantiated functional relations (e.g. subject, object, modifier, complement, etc.). The paper focuses on nature and interaction of the battery of hybrid constraints and evaluates their joint impact against a gold standard of more than 700 manually annotated sentences.
Keyword(s) Robust parsing, hybrid constraints, subcategorization
Language(s) Italian
Full Paper 719.pdf