Title

Question Answering Using Syntax-Based Concept Nodes

Abstract

This paper presents a syntax-based formalism for representing atomic propositions extracted from textual documents. A method is described for constructing a network of concept nodes for indexing such logical forms based on the discourse entities they contain. The decomposition of meaningful questions into Boolean combinations of question patterns using the same formalism is presented, in which free variables represent the desired answers. A method is described for using this formalism for robust question answering using the concept network and WordNet synonym, hypernym, and antonym relationships. Finally, the encouraging performance of an implementation of this formalism against the factoid questions from the 2005 Text Retrieval Conference, which operated upon the AQUAINT document corpus, is discussed.

Publication Date

12-1-2006

Publication Title

Proceedings of the 3rd International Workshop on Natural Language Understanding and Cognitive Science, NLUCS 2006, in Conjunction with ICEIS 2006

Number of Pages

81-90

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

77954137485 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77954137485

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