-
Toivonen, J.; Pirkola, A.; Keskustalo, H.; Visala, K.; Järvelin, K.: Translating cross-lingual spelling variants using transformation rules (2005)
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- Abstract
- Technical terms and proper names constitute a major problem in dictionary-based cross-language information retrieval (CLIR). However, technical terms and proper names in different languages often share the same Latin or Greek origin, being thus spelling variants of each other. In this paper we present a novel two-step fuzzy translation technique for cross-lingual spelling variants. In the first step, transformation rules are applied to source words to render them more similar to their target language equivalents. The rules are generated automatically using translation dictionaries as source data. In the second step, the intermediate forms obtained in the first step are translated into a target language using fuzzy matching. The effectiveness of the technique was evaluated empirically using five source languages and English as a target language. The two-step technique performed better, in some cases considerably better, than fuzzy matching alone. Even using the first step as such showed promising results.
-
Järvelin, K.; Persson, O.: ¬The DCI index : discounted cumulated impact-based research evaluation (2008)
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- Abstract
- Research evaluation is increasingly popular and important among research funding bodies and science policy makers. Various indicators have been proposed to evaluate the standing of individual scientists, institutions, journals, or countries. A simple and popular one among the indicators is the h-index, the Hirsch index (Hirsch 2005), which is an indicator for lifetime achievement of a scholar. Several other indicators have been proposed to complement or balance the h-index. However, these indicators have no conception of aging. The AR-index (Jin et al. 2007) incorporates aging but divides the received citation counts by the raw age of the publication. Consequently, the decay of a publication is very steep and insensitive to disciplinary differences. In addition, we believe that a publication becomes outdated only when it is no longer cited, not because of its age. Finally, all indicators treat citations as equally material when one might reasonably think that a citation from a heavily cited publication should weigh more than a citation froma non-cited or little-cited publication.We propose a new indicator, the Discounted Cumulated Impact (DCI) index, which devalues old citations in a smooth way. It rewards an author for receiving new citations even if the publication is old. Further, it allows weighting of the citations by the citation weight of the citing publication. DCI can be used to calculate research performance on the basis of the h-core of a scholar or any other publication data.
- Content
- Erratum in: Järvelin, K., O. Persson: The DCI-index: discounted cumulated impact-based research evaluation. Erratum re. In: Journal of the American Society for Information Science and Technology. 59(2008) no.14, S.2350-2352.
- Source
- Journal of the American Society for Information Science and Technology. 59(2008) no.9, S.1433-1440
-
Pharo, N.; Järvelin, K.: "Irrational" searchers and IR-rational researchers (2006)
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- Date
- 11. 2.2006 18:33:26
- Source
- Journal of the American Society for Information Science and Technology. 57(2006) no.2, S.222-232
-
Ahlgren, P.; Järvelin, K.: Measuring impact of twelve information scientists using the DCI index (2010)
0.01
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- Date
- 19. 6.2010 18:26:35
- Source
- Journal of the American Society for Information Science and Technology. 61(2010) no.7, S.1424-1439
-
Näppilä, T.; Järvelin, K.; Niemi, T.: ¬A tool for data cube construction from structurally heterogeneous XML documents (2008)
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- Date
- 9. 2.2008 17:22:42
- Source
- Journal of the American Society for Information Science and Technology. 59(2008) no.3, S.435-449
-
Järvelin, K.; Persson, O.: ¬The DCI-index : discounted cumulated impact-based research evaluation (2008)
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- Source
- Journal of the American Society for Information Science and Technology. 59(2008) no.14, S.2350-2352
-
Pirkola, A.; Järvelin, K.: Employing the resolution power of search keys (2001)
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- Source
- Journal of the American Society for Information Science and technology. 52(2001) no.7, S.575-583
-
Niemi, T.; Hirvonen, L.; Järvelin, K.: Multidimensional data model and query language for informetrics (2003)
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- Source
- Journal of the American Society for Information Science and technology. 54(2003) no.10, S.939-951
-
Järvelin, K.: ¬An analysis of two approaches in information retrieval : from frameworks to study designs (2007)
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- Source
- Journal of the American Society for Information Science and Technology. 58(2007) no.7, S.971-986
-
Lehtokangas, R.; Keskustalo, H.; Järvelin, K.: Experiments with transitive dictionary translation and pseudo-relevance feedback using graded relevance assessments (2008)
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- Source
- Journal of the American Society for Information Science and Technology. 59(2008) no.3, S.476-488
-
Järvelin, K.; Niemi, T.: Deductive information retrieval based on classifications (1993)
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- Source
- Journal of the American Society for Information Science. 44(1993) no.10, S.557-578
-
Järvelin, K.; Ingwersen, P.: User-oriented and cognitive models of information retrieval (2009)
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- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
-
Kekäläinen, J.; Järvelin, K.: Using graded relevance assessments in IR evaluation (2002)
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- Source
- Journal of the American Society for Information Science and technology. 53(2002) no.13, S.1120-xxxx
-
Talvensaari, T.; Juhola, M.; Laurikkala, J.; Järvelin, K.: Corpus-based cross-language information retrieval in retrieval of highly relevant documents (2007)
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- Source
- Journal of the American Society for Information Science and Technology. 58(2007) no.3, S.322-334
-
Kumpulainen, S.; Järvelin, K.: Barriers to task-based information access in molecular medicine (2012)
0.00
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- Source
- Journal of the American Society for Information Science and Technology. 63(2012) no.1, S.86-97
-
Järvelin, K.; Kristensen, J.; Niemi, T.; Sormunen, E.; Keskustalo, H.: ¬A deductive data model for query expansion (1996)
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- Source
- Proceedings of the 19th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (ACM SIGIR '96), Zürich, Switzerland, August 18-22, 1996. Eds.: H.P. Frei et al
-
Saastamoinen, M.; Järvelin, K.: Search task features in work tasks of varying types and complexity (2017)
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- Abstract
- Information searching in practice seldom is an end in itself. In work, work task (WT) performance forms the context, which information searching should serve. Therefore, information retrieval (IR) systems development/evaluation should take the WT context into account. The present paper analyzes how WT features: task complexity and task types, affect information searching in authentic work: the types of information needs, search processes, and search media. We collected data on 22 information professionals in authentic work situations in three organization types: city administration, universities, and companies. The data comprise 286 WTs and 420 search tasks (STs). The data include transaction logs, video recordings, daily questionnaires, interviews. and observation. The data were analyzed quantitatively. Even if the participants used a range of search media, most STs were simple throughout the data, and up to 42% of WTs did not include searching. WT's effects on STs are not straightforward: different WT types react differently to WT complexity. Due to the simplicity of authentic searching, the WT/ST types in interactive IR experiments should be reconsidered.
-
Vakkari, P.; Järvelin, K.; Chang, Y.-W.: ¬The association of disciplinary background with the evolution of topics and methods in Library and Information Science research 1995-2015 (2023)
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- Date
- 22. 6.2023 18:15:06
