Change search
ReferencesLink to record
Permanent link

Direct link
Indexing strategies for Swedish full text retrieval under different user scenarios
University College of Borås.ORCID iD: 0000-0003-0229-3073
2007 (English)In: Information Processing & Management, ISSN 0306-4573, Vol. 43, no 1, 81-102 p.Article in journal (Refereed) Published
Abstract [en]

This paper deals with Swedish full text retrieval and the problem of morphological variation of query terms in the document database. The effects of combination of indexing strategies with query terms on retrieval effectiveness were studied. Three of five tested combinations involved indexing strategies that used conflation, in the form of normalization. Further, two of these three combinations used indexing strategies that employed compound splitting. Normalization and compound splitting were performed by SWETWOL, a morphological analyzer for the Swedish language. A fourth combination attempted to group related terms by right hand truncation of query terms. The four combinations were compared to each other and to a baseline combination, where no attempt was made to counteract the problem of morphological variation of query terms in the document database. The five combinations were evaluated under six different user scenarios, where each scenario simulated a certain user type. The four alternative combinations outperformed the baseline, for each user scenario. The truncation combination had the best performance under each user scenario. The main conclusion of the paper is that normalization and right hand truncation (performed by a search expert) enhanced retrieval effectiveness in comparison to the baseline. The performance of the three combinations of indexing strategies with query terms based on normalization was not far below the performance of the truncation combination. (c) 2006 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2007. Vol. 43, no 1, 81-102 p.
National Category
Information Studies
URN: urn:nbn:se:kth:diva-171391DOI: 10.1016/j.ipm.2006.03.003ISI: 000241539500007OAI: diva2:843566

NR 20150817

Available from: 2015-07-29 Created: 2015-07-29 Last updated: 2015-08-17Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Ahlgren, Per
In the same journal
Information Processing & Management
Information Studies

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 35 hits
ReferencesLink to record
Permanent link

Direct link