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Experiments to investigate the connection between case distribution and topical relevance of search terms in an information retrieval setting
Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences. Informationssystem.
2008 In: The Sixth International Conference on Language Resources and Evaluation, LREC 2008, Marrakech, Morocco, May 28-30, 2008., 2008Conference paper (Other academic)

We have performed a set of experiments made to investigate the utility of morphological analysis to improve retrieval of documents written in languages with relatively large morphological variation in a practical commercial setting, using the SiteSeeker search system developed and marketed by Euroling AB. The objective of the experiments was to evaluate different lemmatisers and stemmers to determine which would be the most practical for the task at hand: highly interactive, relatively high precision web searches in commercial customer-oriented document collections. This paper gives an overview of some of the results for Finnish and German, and describes specifically one experiment designed to investigate the case distribution of nouns in a highly inflectional language (Finnish) and the topicality of the nouns in target texts. We find that topical nouns taken from queries are distributed differently over relevant and non- relevant documents depending on their grammatical case.

Place, publisher, year, edition, pages
Keyword [en]
stemming,, lemmatitization,, German,, Finish,, information, retrieval
URN: urn:nbn:se:su:diva-18622OAI: diva2:185145
Available from: 2009-02-27 Created: 2009-01-26Bibliographically approved

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