Non-Local Modeling with a Mixture of PCFGs
Title | Non-Local Modeling with a Mixture of PCFGs |
Publication Type | Conference Paper |
Year of Publication | 2006 |
Authors | Petrov, S., Barrett L., & Klein D. |
Published in | Proceedings of the 10th International Conference on Conference of Computational Natural Language Learning (CoNLL-X '06) |
Page(s) | 14-20 |
Other Numbers | 3263 |
Abstract | While most work on parsing with PCFGs has focused on local correlations between tree configurations, we attempt to model non-local correlations using a finite mixture of PCFGs. A mixture grammar fit with the EM algorithm shows improvement over a single PCFG, both in parsing accuracy and in test data likelihood. We argue that this improvement comes from the learning of specialized grammars that capture non-local correlations. |
URL | http://www.icsi.berkeley.edu/pubs/ai/nonlocalmodeling06.pdf |
Bibliographic Notes | Proceedings of the 10th International Conference on Conference of Computational Natural Language Learning (CoNLL-X '06), pp. 14-20, New York, New York |
Abbreviated Authors | S. Petrov, L. Barrett, and D. Klein |
ICSI Research Group | AI |
ICSI Publication Type | Article in conference proceedings |