Paper: Joint Hebrew Segmentation and Parsing using a PCFGLA Lattice Parser

ACL ID P11-2124
Title Joint Hebrew Segmentation and Parsing using a PCFGLA Lattice Parser
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 2011
Authors

We experiment with extending a lattice pars- ing methodology for parsing Hebrew (Gold- berg and Tsarfaty, 2008; Golderg et al., 2009) to make use of a stronger syntactic model: the PCFG-LA Berkeley Parser. We show that the methodology is very effective: using a small training set of about 5500 trees, we construct a parser which parses and segments unseg- mented Hebrew text with an F-score of almost 80%, an error reduction of over 20% over the best previous result for this task. This result indicates that lattice parsing with the Berkeley parser is an effective methodology for parsing over uncertain inputs.