Abstract
In this year’s participation we continued to evaluate open source information retrieval software. We used mainly the Lucene system and experimented with some of the most effective optimization strategies applied in the past CLEF campaigns. The effectiveness of open source and other free tools can be greatly enhanced by employing these optimization strategies. For most languages, blind relevance feedback led to considerable improvement. On the other hand, indexing strategies with n-grams did not lead to any improvements in our experiments.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Womser-Hacker, C.: Das MIMOR-Modell. Mehrfachindexierung zur dynamischen Methoden-Objekt-Relationierung im Information Retrieval. Habilitationsschrift. Universität Regensburg, Informationswissenschaft (1997)
Mandl, T., Womser-Hacker, C.: A Framework for long-term Learning of Topical User Preferences in Information Retrieval. New Library World 105(5/6), 184–195 (2004)
Mandl, T., Womser-Hacker, C.: Fusion Approaches for Mappings Between Heterogeneous Ontologies. In: Constantopoulos, P., Sølvberg, I.T. (eds.) ECDL 2001. LNCS, vol. 2163, pp. 83–94. Springer, Heidelberg (2001)
Hackl, R., Kölle, R., Mandl, T., Ploedt, A., Scheufen, J.-H., Womser-Hacker, C.: Multilingual Retrieval Experiments with MIMOR at the University of Hildesheim. In: Peters, C., Gonzalo, J., Braschler, M., Kluck, M. (eds.) CLEF 2003. LNCS, vol. 3237, pp. 166–173. Springer, Heidelberg (2004)
Hackl, R.: Multilinguales Information Retrieval im Rahmen von CLEF 2003. Master Thesis, University of Hildesheim, Information Science (2004)
Hackl, R., Mandl, T., Schwantner, M.: Evaluierung und Einsatz des open source Volltext-Retrievalsystems Lucene am FIZ Karlsruhe. In: Ockenfeld, M. (ed.) Information Professional 2011: Strategien – Allianzen – Netzwerke. Proceedings 26. DGI Online-Tagung. Frankfurt a.M. 15.-17, June 2004, pp. 147–153 (2004)
McNamee, P., Mayfield, J.: Character N-Gram Tokenization for European Language Text Retrieval. Information Retrieval 7(1/2), 73–98 (2004)
Carpineto, C., de Mori, R., Romano, G., Bigi, B.: An Information-Theoretic Approach to Automatic Query Expansion. ACM Transactions on Information Systems 19(1), 1–27 (2001)
Mandl, T., Womser-Hacker, C.: Analysis of Topic Features in Cross-Language Information Retrieval Evaluation. In: 4th International Conference on Language Resources and Evaluation (LREC), Workshop Lessons Learned from Evaluation: Towards Transparency and Integration in Cross-Lingual Information Retrieval (LECLIQ), Lisbon, Portugal, May 24-30, pp. 17–19
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Hackl, R., Mandl, T., Womser-Hacker, C. (2005). Mono- and Crosslingual Retrieval Experiments at the University of Hildesheim. In: Peters, C., Clough, P., Gonzalo, J., Jones, G.J.F., Kluck, M., Magnini, B. (eds) Multilingual Information Access for Text, Speech and Images. CLEF 2004. Lecture Notes in Computer Science, vol 3491. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11519645_17
Download citation
DOI: https://doi.org/10.1007/11519645_17
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-27420-9
Online ISBN: 978-3-540-32051-7
eBook Packages: Computer ScienceComputer Science (R0)