712 research outputs found
A New Centrality Measure for Social Network Analysis Applicable to Bibliometric and Webometric Data
No full textIn the literature there are a large number of publications in sociology, in computer science or in information sciences, as well as in studies of collaboration in science describing the studies of social networks with unweighted ties because measures involving unweighted ties are easier to calculate. It is not surprising that there are few studies on networks with weighted ties since they not only need more complex formulas but need a process of quantification when quantitative empirical data are not directly available.
However quantitative empirical data are directly available under the condition of using bibliometric or webometric data.
In conclusion new complex measures of the degree centrality are introduced including weighted ties possible for use of the analysis of co-authorship or citation networks. Both co-authorship relations and citations are well quantified data (weighted ties).
These new measures are applied to a co-authorship network as an exampl
TIDSTAVLE: – Vigtige begivenheder i dansk psykologis historie
No full textAf Birger Hjørland ©
Dette er en opdateret version af: Hjørland (1982): Tidstavle. Vigtige begivenheder i dansk psykologi’s historie. (i: Formændene beretter 1947-1982. Store og små begivenheder i Dansk Psykologforenings liv i anledning af 35-års fødselsdagen. (Redigeret af Poul W. Perch & Per K. Larsen). Kbh.: Dansk Psykologforening, 1982. Side 109-112).Af Birger Hjørland ©
Dette er en opdateret version af: Hjørland (1982): Tidstavle. Vigtige begivenheder i dansk psykologi’s historie. (i: Formændene beretter 1947-1982. Store og små begivenheder i Dansk Psykologforenings liv i anledning af 35-års fødselsdagen. (Redigeret af Poul W. Perch & Per K. Larsen). Kbh.: Dansk Psykologforening, 1982. Side 109-112)
Scaling Analysis of Author Level Bibliometric Indicators
Full text linkDespite of the concerns from the bibliometric community, evaluation of the individual through bibliometric indices is already performed as a form of ‘pseudo peer review’ in selection of candidates for tenure, in background checks of potential employees’ publicationand citation impact, and in appraisal of funding applications. As part of developing the ACUMEN portfolio we therefore undertook an extensive review of 114 bibliometric indicators in Wildgaard, Schneider and Larsen (2014) to identify 1) which author level indices are useful to document the effect of publication performance, 2) identify which scientific activities it is possible to measure and with which indices, 3) analyse the applicability of these indices by discussing the strengths and weakness of each one, and 4) identify if there is a need for any additional novel indicators to measures the performance of individuals. The review confirmed that there is no immediate need to develop new bibliometric indicators. There is a wealth of indicators to choose from, some used in practice and some theoretical only. There is however a need to understand the usefulness of existing indicators and which ones represent independent research activities of authors. We have begun our investigation into how indicators complement each other, specifically if there is a redundancy among indicators, i.e. two or more indicators measure the same thing, and which indicators are the “best” choice in regards to four predefined disciplines. The main parameter we judge the usefulness of indicators is on their simplicity, understood as the simplicity of data collection and the simplicity of mathematical computation for each indicator (Wildgaard, Schneider & Larsen 2014). The present study is a further investigation into which effects of publishing and citing these simple indicators attempt to capture
Reusing the Model and Components of an IIR Study for Perceived Effects of OCR Quality Change
No full textPresentation for the paper Kimmo Kettunen, Heikki Keskustalo, Birger Larsen, Tuula Pääkkönen and Juha Rautiainen. 2022. Reusing the Model and Components of an IIR Study for Perceived Effects of OCR Quality Change. In Proceedings of Third Workshop on Building towards Information Interaction and Retrieval Resources Re-use (BIIRRR 2022, https://biirrr2022.aau.dk/) at the CHIIR2022 Conference. ACM, New York, NY, USA, 7 page
An Exploration of Retrieval-Enhancing Methods for Integrated Search in a Digital Library
Full text linkIntegrated search is defined as searching across different document types and representations simultaneously, with the goal of presenting the user with a single ranked result list containing the optimal mix of document types. In this paper, we compare various approaches to integrating three different types of documents (bibliographic records for articles and books as well as full-text articles) using the iSearch collection: combining all document types in a single index, weighting the different document types using priors, and using collection fusion techniques to merge the retrieval results on three separate indexes corresponding to each of the document types. We find that a properly optimized retrieval model on a single combined index containing all documents without any special treatment performs no worse than our weighting and fusion methods, suggesting that more work is needed on alternative approaches to integrated search
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