Paper: Attaching Multiple Prepositional Phrases: Generalized Backed-Off Estimation

ACL ID W97-0317
Title Attaching Multiple Prepositional Phrases: Generalized Backed-Off Estimation
Venue Conference on Empirical Methods in Natural Language Processing
Session Main Conference
Year 1997
Authors

There has recently been considerable inter- est in the use of lexically-based statistical techniques to resolve prepositional phrase attachments. To our knowledge, however, these investigations have only considered the problem of attaching the first PP, i.e., in a IV NP PP] configuration. In this paper, we consider one technique which has been successfully applied to this prob- lem, backed-off estimation, and demon- strate how it can be extended to deal with the problem of multiple PP attach- ment. The multiple PP attachment intro- duces two related problems: sparser data (since multiple PPs are naturally rarer), and greater syntactic ambiguity (more at- tachment configurations which must be dis- tinguished). We present and algorithm which solves this problem through re-use of the relative...