Coordination disambiguation without any similarities

Abstract

The use of similarities has been one of the main approaches to resolve the ambigui-ties of coordinate structures. In this pa-per, we present an alternative method for coordination disambiguation, which does not use similarities. Our hypothesis is that coordinate structures are supported by surrounding dependency relations, and that such dependency relations rather yield similarity between conjuncts, which hu-mans feel. Based on this hypothesis, we built a Japanese fully-lexicalized genera-tive parser that includes coordination dis-ambiguation. Experimental results on web sentences indicated the effectiveness of our approach, and endorsed our hypothesis.