Paper: Statistical Sentence Condensation Using Ambiguity Packing And Stochastic Disambiguation Methods For Lexical-Functional Grammar

ACL ID N03-1026
Title Statistical Sentence Condensation Using Ambiguity Packing And Stochastic Disambiguation Methods For Lexical-Functional Grammar
Venue Human Language Technologies
Session Main Conference
Year 2003
Authors

We present an application of ambiguity pack- ing and stochastic disambiguation techniques for Lexical-Functional Grammars (LFG) to the domain of sentence condensation. Our system incorporates a linguistic parser/generator for LFG, a transfer component for parse reduc- tion operating on packed parse forests, and a maximum-entropy model for stochastic output selection. Furthermore, we propose the use of standard parser evaluation methods for auto- matically evaluating the summarization qual- ity of sentence condensation systems. An ex- perimental evaluation of summarization qual- ity shows a close correlation between the au- tomatic parse-based evaluation and a manual evaluation of generated strings. Overall sum- marization quality of the proposed system is state-of-the-art, with guaranteed ...