Paper: A Joint Model for Extended Semantic Role Labeling

ACL ID D11-1012
Title A Joint Model for Extended Semantic Role Labeling
Venue Conference on Empirical Methods in Natural Language Processing
Session Main Conference
Year 2011
Authors

This paper presents a model that extends se- mantic role labeling. Existing approaches in- dependently analyze relations expressed by verb predicates or those expressed as nominal- izations. However, sentences express relations via other linguistic phenomena as well. Fur- thermore, these phenomena interact with each other, thus restricting the structures they artic- ulate. In this paper, we use this intuition to define a joint inference model that captures the inter-dependencies between verb seman- tic role labeling and relations expressed us- ing prepositions. The scarcity of jointly la- beled data presents a crucial technical chal- lenge for learning a joint model. The key strength of our model is that we use existing structure predictors as black boxes. By en- forcing consistency constr...