University of Hagen at QA@CLEF 2007: Coreference Resolution for Questions and Answer Merging

Sven Hartrumpf, Ingo Glöckner, Johannes Leveling
2007 Conference and Labs of the Evaluation Forum  
The German question answering (QA) system InSicht participated in QA@CLEF for the fourth time. InSicht realizes a deep QA approach: it builds on full sentence parses, rulebased inferences on semantic representations, and matching semantic representations derived from questions and document sentences. InSicht was improved for QA@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;
more » ... finally, our system for the CLEF Answer Validation Exercise is employed for answer merging. Results showed a performance drop compared to last year mainly due to unstable and incomplete handling of the newly added Wikipedia corpus. However, dialog treatment by coreference resolution delivered very accurate results so that follow-up questions can be handled similar to isolated questions.
dblp:conf/clef/HartrumpfGL07a fatcat:zffyck4ouvcppllf2v7f6nwf34