Coreference Resolution for Questions and Answer Merging by Validation

  • Sven Hartrumpf
  • Ingo Glöckner
  • Johannes Leveling
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5152)


For its fourth participation at QA@CLEF, the German question answering (QA) system InSicht was improved for CLEF 2007 in the following main areas: questions containing pronominal or nominal anaphors are treated by a coreference resolver; the shallow QA methods are improved; and a specialized module is added for answer merging. Results showed a performance drop compared to last year mainly due to problems in handling the newly added Wikipedia corpus. However, dialog treatment by coreference resolution delivered very accurate results so that follow-up questions can be handled similarly to isolated questions.


Question Answering Performance Drop Coreference Resolution Question Answering System Answer Candidate 
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.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Sven Hartrumpf
    • 1
  • Ingo Glöckner
    • 1
  • Johannes Leveling
    • 1
  1. 1.Intelligent Information and Communication Systems (IICS)University of Hagen (FernUniversität in Hagen)HagenGermany

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