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Short CV

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I hold a PhD (Dr.) in Computer Science from the Technical University of Darmstadt, which I received in 1986. I became Associate Professor in the computer science department of the University of Dortmund in 1991 and was appointed Full Professor for computer science at the University of Duisburg-Essen in 2002. My current research interests are retrieval models, user-oriented retrieval methods and social media retrieval.

In 2012, I received the Gerald Salton Award of ACM-SIGIR for my research contributions to the field of information retrieval.

I have served as regular PC member of major international conferences related to information retrieval and digital libraries, such as ACM-SIGIR, CIKM, ECIR, SPIRE, ICDL, ECDL, ICADL, FQAS. I was PC chair of ECIR 2002, IR track chair of CIKM 2005 and Co-Chair of SIGIR 2007, ECDL 2007 and TPDL 2016, and General Co-Chair of ECIR 2015 and 2019. For the German IR-group GI-FGIR, I served as Chair from 1992-2008.

I am a member of the editorial board of the journal International Journal of Digital Libraries.

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Research Interests

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• Information Retrieval Models
• Interactive Retrieval
• Domain-Specific Retrieval
• Validity of Information Retrieval Experiments