Hans Friedrich Witschel


2005

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Evaluating profiling and query expansion methods for P2P information retrieval
Hans Friedrich Witschel | Thomas Böhme
Proceedings of the 2005 ACM workshop on Information retrieval in peer-to-peer networks, P2PIR '05, Bremen, Germany, November 4, 2005

2007

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Global resources for peer-to-peer text retrieval
Hans Friedrich Witschel
SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Amsterdam, The Netherlands, July 23-27, 2007

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Admission Policies for Caches of Search Engine Results
Ricardo A. Baeza-Yates | Flavio Junqueira | Vassilis Plachouras | Hans Friedrich Witschel
String Processing and Information Retrieval, 14th International Symposium, SPIRE 2007, Santiago, Chile, October 29-31, 2007, Proceedings

2008

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An Evaluation Measure for Distributed Information Retrieval Systems
Hans Friedrich Witschel | Florian Holz | Gregor Heinrich | Sven Teresniak
Advances in Information Retrieval , 30th European Conference on IR Research, ECIR 2008, Glasgow, UK, March 30-April 3, 2008. Proceedings

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Ranking information resources in peer-to-peer text retrieval: an experimental study
Hans Friedrich Witschel
Proceeding of the 2008 ACM Workshop on Large-Scale Distributed Systems for Information Retrieval, LSDS-IR 2008, Napa Valley, California, USA, October 30, 2008

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Global term weights in distributed environments
Hans Friedrich Witschel
2008 Volume 44 Issue 3

2020

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KvGR: A Graph-Based Interface for Explorative Sequential Question Answering on Heterogeneous Information Sources
Hans Friedrich Witschel | Kaspar Riesen | Loris Grether
Advances in Information Retrieval - 42nd European Conference on IR Research, ECIR 2020, Lisbon, Portugal, April 14-17, 2020, Proceedings, Part I