Question Answering Using Syntax-Based Concept Nodes

Demetrios G. Glinos, Fernando Gomez

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.

References

  1. Abney, S.: Partial Parsing via Finite-State Cascades. In: Proceedings of Workshop on Robust Parsing, 8th European Summer School in Logic, Language and Information. Prague, Czech Republic (1996) 8-15.
  2. Ahn, K., Bos, J., Clark, S., Curran, J., Dalmas, T., Leidner, J., Smillie, M., Webber, B.: Question Answering with QED and Wee at TREC-2004. In: Voorhees, E.M., Buckland, L.P. (eds.): Proceedings of the Thirteenth Text REtrieval Conference (TREC 2004), NIST Special Publication 500-261. Gaithersburg, MD (2005)
  3. Brill, E.: Some Advances in Part of Speech Tagging. In: Proceedings of the Twelfth National Conference on Artificial Intelligence (AAAI-94). Seattle, Washington (1994)
  4. Fellbaum, C. (ed.): WordNet: An Electronic Lexical Database. The MIT Press, Cambridge London (1998)
  5. Gaisauskas, R., Greenwood, M., Hepple, M., Roberts, I., Saggion, H.: The University of Sheffield's TREC 2004 Q&A Experiments. In: Voorhees, E.M., Buckland, L.P. (eds.): Proceedings of the Thirteenth Text REtrieval Conference (TREC 2004), NIST Special Publication 500-261. Gaithersburg, MD (2005)
  6. Greenwood, M., Roberts, I., Gaizauskas, R.: The University of Sheffield TREC 2002 Q&A System. n: Voorhees, E.M., Buckland, L.P. (eds.): Proceedings of the Eleventh Text REtrieval Conference (TREC 2002), NIST Special Publication 500-251. Gaithersburg, MD (2003)
  7. Harabagiu, S., Moldovan, D., Clark, C., Bowden, M., Williams, J., Bensley, J.: Answer Mining by Combining Extraction Techniques with Abductive Reasoning. In: Voorhees, E.M., Buckland, L.P. (eds.): Proceedings of the Twelfth Text REtrieval Conference (TREC 2003), NIST Special Publication 500-255. Gaithersburg, MD (2004) 375-382
  8. Litkowski, K.: Question Answering Using XMS-Tagged Documents. In: Voorhees, E.M., Buckland, L.P. (eds.): Proceedings of the Eleventh Text REtrieval Conference (TREC 2002), NIST Special Publication 500-251. Gaithersburg, MD (2003) 156-165
  9. Schone, P., Ciany, G., McNamee, P., Mayfield, J., Bassi, T. Kulman, A.: Question Answering with QACTIS at TREC-2004. In: Voorhees, E.M., Buckland, L.P. (eds.): Proceedings of the Thirteenth Text REtrieval Conference (TREC 2004), NIST Special Publication 500- 261. Gaithersburg, MD (2005)
  10. Voorhees, E.M.: Overview of the TREC 2004 Question Answering Track. In: Voorhees, E.M., Buckland, L.P. (eds.): Proceedings of the Thirteenth Text REtrieval Conference (TREC 2004), NIST Special Publication 500-261. Gaithersburg, MD (2005)
Download


Paper Citation


in Harvard Style

G. Glinos D. and Gomez F. (2006). Question Answering Using Syntax-Based Concept Nodes . In Proceedings of the 3rd International Workshop on Natural Language Understanding and Cognitive Science - Volume 1: NLUCS, (ICEIS 2006) ISBN 978-972-8865-50-4, pages 81-90. DOI: 10.5220/0002477500810090


in Bibtex Style

@conference{nlucs06,
author={Demetrios G. Glinos and Fernando Gomez},
title={Question Answering Using Syntax-Based Concept Nodes},
booktitle={Proceedings of the 3rd International Workshop on Natural Language Understanding and Cognitive Science - Volume 1: NLUCS, (ICEIS 2006)},
year={2006},
pages={81-90},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002477500810090},
isbn={978-972-8865-50-4},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 3rd International Workshop on Natural Language Understanding and Cognitive Science - Volume 1: NLUCS, (ICEIS 2006)
TI - Question Answering Using Syntax-Based Concept Nodes
SN - 978-972-8865-50-4
AU - G. Glinos D.
AU - Gomez F.
PY - 2006
SP - 81
EP - 90
DO - 10.5220/0002477500810090