Advertisement

Multilingual Question Answering through Intermediate Translation: LCC’s PowerAnswer at QA@CLEF 2007

  • Mitchell Bowden
  • Marian Olteanu
  • Pasin Suriyentrakorn
  • Thomas d’Silva
  • Dan Moldovan
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5152)

Abstract

This paper reports on Language Computer Corporation’s QA@CLEF 2007 preparation, participation and results. For this exercise, LCC integrated its open-domain PowerAnswer Question Answering system with its statistical Machine Translation engine. For 2007, LCC participated in the English-to-French and English-to-Portuguese cross-language tasks. The approach is that of intermediate translation, only processing English within the QA system regardless of the input or source languages. The output snippets were then mapped back into the source language documents for the final output of the system and submission. What follows is a description of the improved system and methodology and updates from QA@CLEF 2006.

Keywords

Machine Translation Question Answering Statistical Machine Translation Parallel Corpus Answer Type 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Bowden, M., Olteanu, M., Suriyentrakorn, P., Clark, J., Moldovan, D.: LCC’s PowerAnswer at QA@CLEF 2006. In: Peters, C., Clough, P., Gey, F.C., Karlgren, J., Magnini, B., Oard, D.W., de Rijke, M., Stempfhuber, M. (eds.) CLEF 2006. LNCS, vol. 4730, pp. 310–317. Springer, Heidelberg (2007)CrossRefGoogle Scholar
  2. 2.
    Harabagiu, S., Moldovan, D., Clark, C., Bowden, M., Hickl, A., Wang, P.: Employing Two Question Answering Systems in TREC-2005. In: Text REtrieval Conference (2005)Google Scholar
  3. 3.
    Koehn, P., Och, F.J., Marcu, D.: Statistical Phrase-Based Translation. In: Proceedings of HLT/NAACL 2003 Edmonton, Canada (2003)Google Scholar
  4. 4.
    Koehn, P.: Europarl: A Parallel Corpus for Statistical Machine Translation. MT Summit 2005 (2005)Google Scholar
  5. 5.
    Koehn, P.: Pharaoh: A beam search decoder for phrase-based statistical machine translation models. In: Frederking, R.E., Taylor, K.B. (eds.) AMTA 2004. LNCS (LNAI), vol. 3265. Springer, Heidelberg (2004)Google Scholar
  6. 6.
    Moldovan, D., Harabagiu, S., Clark, C., Bowden, M.: PowerAnswer 2: Experiments and Analysis over TREC 2004. In: Text REtrieval Conference (2004)Google Scholar
  7. 7.
    Moldovan, D., Clark, C., Bowden, M.: Lymba’s PowerAnswer 4 in TREC 2007. In: Text REtrieval Conference (2007)Google Scholar
  8. 8.
    Moldovan, D., Bowden, M., Tatu, M.: A Temporally-Enhanced PowerAnswer in TREC 2006. In: Text Retrieval Conference (2006)Google Scholar
  9. 9.
    Moldovan, D., Clark, C., Harabagiu, S.: Temporal Context Representation and Reasoning. In: Proceedings of IJCAI, Edinburgh, Scotland (2005)Google Scholar
  10. 10.
    Moldovan, D., Clark, C., Harabagiu, S., Maiorano, S.: COGEX A Logic Prover for Question Answering. In: Proceedings of the HLT/NAACL (2003)Google Scholar
  11. 11.
    Moldovan, D., Novischi, A.: Lexical chains for Question Answering. In: Proceedings of COLING, Taipei, Taiwan (August 2002)Google Scholar
  12. 12.
    Moldovan, D., Rus, V.: Logic Form Transformation of WordNet and its Applicability to Question Answering. In: Proceedings of ACL, France (2001)Google Scholar
  13. 13.
    Moldovan, D., Srikanth, M., Fowler, A., Mohammed, A., Jean, E.: Synergist: Tools for Intelligence Analysis. In: NIMD Conference, Arlington, VA (2006)Google Scholar
  14. 14.
    Olteanu, M., Suriyentrakorn, P., Moldovan, D.: Language Models and Reranking for Machine Translation. In: NAACL 2006 Workshop On Statistical Machine Translation (2006)Google Scholar
  15. 15.
    Olteanu, M., Davis, C., Volosen, I., Moldovan, D.: Phramer - An Open Source Statistical Phrase-Based Translator. In: NAACL 2006 Workshop On Statistical Machine Translation (2006)Google Scholar
  16. 16.
    Tatu, M., Iles, B., Moldovan, D.: Automatic Answer Validation using COGEX. In: Peters, C., Clough, P., Gey, F.C., Karlgren, J., Magnini, B., Oard, D.W., de Rijke, M., Stempfhuber, M. (eds.) CLEF 2006. LNCS, vol. 4730. Springer, Heidelberg (2007)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Mitchell Bowden
    • 1
  • Marian Olteanu
    • 1
  • Pasin Suriyentrakorn
    • 1
  • Thomas d’Silva
    • 1
  • Dan Moldovan
    • 1
  1. 1.Language Computer CorporationRichardsonUSA

Personalised recommendations