-
Ahlgren, P.; Järvelin, K.: Measuring impact of twelve information scientists using the DCI index (2010)
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- Abstract
- The Discounted Cumulated Impact (DCI) index has recently been proposed for research evaluation. In the present work an earlier dataset by Cronin and Meho (2007) is reanalyzed, with the aim of exemplifying the salient features of the DCI index. We apply the index on, and compare our results to, the outcomes of the Cronin-Meho (2007) study. Both authors and their top publications are used as units of analysis, which suggests that, by adjusting the parameters of evaluation according to the needs of research evaluation, the DCI index delivers data on an author's (or publication's) lifetime impact or current impact at the time of evaluation on an author's (or publication's) capability of inviting citations from highly cited later publications as an indication of impact, and on the relative impact across a set of authors (or publications) over their lifetime or currently.
- Source
- Journal of the American Society for Information Science and Technology. 61(2010) no.7, S.1424-1439
-
Järvelin, K.; Kristensen, J.; Niemi, T.; Sormunen, E.; Keskustalo, H.: ¬A deductive data model for query expansion (1996)
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- Pages
- S.235-243
- 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.
- Source
- Journal of the Association for Information Science and Technology. 68(2017) no.5, S.1111-1123
-
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
-
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
- Source
- Journal of the Association for Information Science and Technology. 74(2023) no.7, S.811-827
-
Niemi, T.; Junkkari, M.; Järvelin, K.; Viita, S.: Advanced query language for manipulating complex entities (2004)
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- Source
- Information processing and management. 40(2004) no.6, S.869-
-
Kristensen, J.; Järvelin, K.: ¬The effectiveness of a searching thesaurus in free-text searching in a full-text database (1990)
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- Source
- International classification. 17(1990), S.77-84
-
Järvelin, K.; Vakkari, P.: ¬The evolution of library and information science 1965-1985 : a content analysis of journal titles (1993)
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- Source
- Information processing and management. 29(1993) no.1, S.129-144
-
Pirkola, A.; Hedlund, T.; Keskustalo, H.; Järvelin, K.: Dictionary-based cross-language information retrieval : problems, methods, and research findings (2001)
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- Source
- Information retrieval. 4(2001), S.209-230
-
Järvelin, K.: Evaluation (2011)
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- Pages
- S.113-138
-
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
-
Järvelin, K.; Persson, O.: ¬The DCI index : discounted cumulated impact-based research evaluation (2008)
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- 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
-
Kumpulainen, S.; Järvelin, K.: Barriers to task-based information access in molecular medicine (2012)
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- Source
- Journal of the American Society for Information Science and Technology. 63(2012) no.1, S.86-97
-
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
-
Pharo, N.; Järvelin, K.: "Irrational" searchers and IR-rational researchers (2006)
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- Source
- Journal of the American Society for Information Science and Technology. 57(2006) no.2, S.222-232
-
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
-
Halttunen, K.; Järvelin, K.: Assessing learning outcomes in two information retrieval learning environments (2005)
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- Information processing and management. 41(2005) no.4, S.949-972
-
Hansen, P.; Järvelin, K.: Collaborative Information Retrieval in an information-intensive domain (2005)
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- Information processing and management. 41(2005) no.5, S.1101-1120
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Toivonen, J.; Pirkola, A.; Keskustalo, H.; Visala, K.; Järvelin, K.: Translating cross-lingual spelling variants using transformation rules (2005)
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- Information processing and management. 41(2005) no.4, S.859-872
