Probabilistic Coordination Disambiguation in a Fully-Lexicalized Japanese Parser
Daisuke Kawahara, Sadao Kurohashi · 2007
This paper describes a probabilistic model for coordination disambiguation integrated into syntactic and case structure analy-sis. Our model probabilistically assesses the parallelism of a candidate coordinate structure using syntactic/semantic similari-ties and cooccurrence statistics. We inte-grate these probabilities into the framework of fully-lexicalized parsing based on large-scale case frames. This approach simulta-neously addresses two tasks of coordination disambiguation: the detection of coordinate conjunctions and the scope disambiguation of coordinate structures. Experimental re-sults on web sentences indicate the effective-ness of our approach. 1