Literatur zur Informationserschließung

Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.

© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 28. April 2022)

Suchergebnisse

• 1
  Fang, Z. ; Costas, R. ; Tian, W. ; Wang, X. ; Wouters, P.: How is science clicked on Twitter? : click metrics for Bitly short links to scientific publications.
  In: Journal of the Association for Information Science and Technology. 72(2021) no.7, S.918-932.
  
  Abstract: To provide some context for the potential engagement behavior of Twitter users around science, this article investigates how Bitly short links to scientific publications embedded in scholarly Twitter mentions are clicked on Twitter. Based on the click metrics of over 1.1 million Bitly short links referring to Web of Science (WoS) publications, our results show that around 49.5% of them were not clicked by Twitter users. For those Bitly short links with clicks from Twitter, the majority of their Twitter clicks accumulated within a short period of time after they were first tweeted. Bitly short links to the publications in the field of Social Sciences and Humanities tend to attract more clicks from Twitter over other subject fields. This article also assesses the extent to which Twitter clicks are correlated with some other impact indicators. Twitter clicks are weakly correlated with scholarly impact indicators (WoS citations and Mendeley readers), but moderately correlated to other Twitter engagement indicators (total retweets and total likes). In light of these results, we highlight the importance of paying more attention to the click metrics of URLs in scholarly Twitter mentions, to improve our understanding about the more effective dissemination and reception of science information on Twitter.
  
  Inhalt: Vgl.: https://asistdl.onlinelibrary.wiley.com/doi/10.1002/asi.24458.
  
  Themenfeld: Informetrie
  Objekt: Twitter
  
  
• 2
  Franssen, T. ; Wouters, P.: Science and its significant other : representing the humanities in bibliometric scholarship.
  In: Journal of the Association for Information Science and Technology. 70(2019) no.10, S.1124-1137.
  (AIS review)
  
  Abstract: The cognitive and social structures, and publication practices, of the humanities have been studied bibliometrically for the past 50 years. This article explores the conceptual frameworks, methods, and data sources used in bibliometrics to study the nature of the humanities, and its differences and similarities in comparison with other scientific domains. We give a historical overview of bibliometric scholarship between 1965 and 2018 that studies the humanities empirically and distinguishes between two periods in which the configuration of the bibliometric system differs remarkably. The first period, 1965 to the 1980s, is characterized by bibliometric methods embedded in a sociological theoretical framework, the development and use of the Price Index, and small samples of journal publications from which references are used as data sources. The second period, the 1980s to the present day, is characterized by a new intellectual hinterland-that of science policy and research evaluation-in which bibliometric methods become embedded. Here metadata of publications becomes the primary data source with which publication profiles of humanistic scholarly communities are analyzed. We unpack the differences between these two periods and critically discuss the analytical avenues that different approaches offer.
  
  Inhalt: Vgl.: https://asistdl.onlinelibrary.wiley.com/doi/10.1002/asi.24206.
  
  Themenfeld: Informetrie
  
  
• 3
  Leeuwen, T.N. van ; Tatum, C. ; Wouters, P.F: Exploring possibilities to use bibliometric data to monitor gold open access publishing at the national level.
  In: Journal of the Association for Information Science and Technology. 69(2018) no.9, S.1161-1173.
  
  Abstract: This article1 describes the possibilities to analyze open access (OA) publishing in the Netherlands in an international comparative way. OA publishing is now actively stimulated by Dutch science policy, similar to the United Kingdom. We conducted a bibliometric baseline measurement to assess the current situation, to be able to measure developments over time. We collected data from various sources, and for three different smaller European countries (the Netherlands, Denmark, and Switzerland). Not all of the analyses for this baseline measurement are included here. The analysis presented in this article focuses on the various ways OA can be defined using the Web of Science, limiting the analysis mainly to Gold OA. From the data we collected we can conclude that the way OA is currently registered in various electronic bibliographic databases is quite unclear, and various methods applied deliver results that are different, although the impact scores derived from the data point in the same direction.
  
  Inhalt: Vgl.: https://onlinelibrary.wiley.com/doi/10.1002/asi.24029.
  
  Themenfeld: Informetrie
  Land/Ort: NL
  
  
• 4
  Zahedi, Z. ; Costas, R. ; Wouters, P.: Mendeley readership as a filtering tool to identify highly cited publications.
  In: Journal of the Association for Information Science and Technology. 68(2017) no.10, S.2511-2521.
  
  Abstract: This study presents a large-scale analysis of the distribution and presence of Mendeley readership scores over time and across disciplines. We study whether Mendeley readership scores (RS) can identify highly cited publications more effectively than journal citation scores (JCS). Web of Science (WoS) publications with digital object identifiers (DOIs) published during the period 2004-2013 and across five major scientific fields were analyzed. The main result of this study shows that RS are more effective (in terms of precision/recall values) than JCS to identify highly cited publications across all fields of science and publication years. The findings also show that 86.5% of all the publications are covered by Mendeley and have at least one reader. Also, the share of publications with Mendeley RS is increasing from 84% in 2004 to 89% in 2009, and decreasing from 88% in 2010 to 82% in 2013. However, it is noted that publications from 2010 onwards exhibit on average a higher density of readership versus citation scores. This indicates that compared to citation scores, RS are more prevalent for recent publications and hence they could work as an early indicator of research impact. These findings highlight the potential and value of Mendeley as a tool for scientometric purposes and particularly as a relevant tool to identify highly cited publications.
  
  Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23883/full.
  
  Themenfeld: Elektronisches Publizieren ; Informetrie
  Objekt: Mendeley
  
  
• 5
  Hicks, D. ; Wouters, P. ; Waltman, L. ; Rijcke, S. de ; Rafols, I.: ¬The Leiden Manifesto for research metrics : 10 principles to guide research evaluation.
  In: Nature. 520(2015), 23.04.2015, S.429-431.
  
  Abstract: Research evaluation has become routine and often relies on metrics. But it is increasingly driven by data and not by expert judgement. As a result, the procedures that were designed to increase the quality of research are now threatening to damage the scientific system. To support researchers and managers, five experts led by Diana Hicks, professor in the School of Public Policy at Georgia Institute of Technology, and Paul Wouters, director of CWTS at Leiden University, have proposed ten principles for the measurement of research performance: the Leiden Manifesto for Research Metrics published as a comment in Nature.
  
  Inhalt: Vgl.: http://www.nature.com/polopoly_fs/1.17351!/menu/main/topColumns/topLeftColumn/pdf/520429a.pdf. http://www.leidenmanifesto.org/uploads/4/1/6/0/41603901/leiden_manifesto_german__leidener_manifest.pdf. Video unter: https://vimeo.com/133683418.
  
  Themenfeld: Informetrie
  
  
• 6
  Costas, R. ; Zahedi, Z. ; Wouters, P.: Do "altmetrics" correlate with citations? : extensive comparison of altmetric indicators with citations from a multidisciplinary perspective.
  In: Journal of the Association for Information Science and Technology. 66(2015) no.10, S.2003-2019.
  
  Abstract: An extensive analysis of the presence of different altmetric indicators provided by Altmetric.com across scientific fields is presented, particularly focusing on their relationship with citations. Our results confirm that the presence and density of social media altmetric counts are still very low and not very frequent among scientific publications, with 15%-24% of the publications presenting some altmetric activity and concentrated on the most recent publications, although their presence is increasing over time. Publications from the social sciences, humanities, and the medical and life sciences show the highest presence of altmetrics, indicating their potential value and interest for these fields. The analysis of the relationships between altmetrics and citations confirms previous claims of positive correlations but is relatively weak, thus supporting the idea that altmetrics do not reflect the same kind of impact as citations. Also, altmetric counts do not always present a better filtering of highly-cited publications than journal citation scores. Altmetric scores (particularly mentions in blogs) are able to identify highly-cited publications with higher levels of precision than journal citation scores (JCS), but they have a lower level of recall. The value of altmetrics as a complementary tool of citation analysis is highlighted, although more research is suggested to disentangle the potential meaning and value of altmetric indicators for research evaluation.
  
  Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23309/abstract.
  
  Themenfeld: Informetrie
  Objekt: Altmetrics
  
  
• 7
  Costas, R. ; Zahedi, Z. ; Wouters, P.: ¬The thematic orientation of publications mentioned on social media : large-scale disciplinary comparison of social media metrics with citations.
  In: Aslib journal of information management. 67(2015) no.3, S.260 - 288.
  
  Abstract: Purpose - The purpose of this paper is to analyze the disciplinary orientation of scientific publications that were mentioned on different social media platforms, focussing on their differences and similarities with citation counts. Design/methodology/approach - Social media metrics and readership counts, associated with 500,216 publications and their citation data from the Web of Science database, were collected from Altmetric.com and Mendeley. Results are presented through descriptive statistical analyses together with science maps generated with VOSviewer. Findings - The results confirm Mendeley as the most prevalent social media source with similar characteristics to citations in their distribution across fields and their density in average values per publication. The humanities, natural sciences, and engineering disciplines have a much lower presence of social media metrics. Twitter has a stronger focus on general medicine and social sciences. Other sources (blog, Facebook, Google+, and news media mentions) are more prominent in regards to multidisciplinary journals. Originality/value - This paper reinforces the relevance of Mendeley as a social media source for analytical purposes from a disciplinary perspective, being particularly relevant for the social sciences (together with Twitter). Key implications for the use of social media metrics on the evaluation of research performance (e.g. the concentration of some social media metrics, such as blogs, news items, etc., around multidisciplinary journals) are identified.
  
  Inhalt: Vgl.: https://doi.org/10.1108/AJIM-12-2014-0173.
  
  Anmerkung: Teil eines Special Issue: Social Media Metrics in Scholarly Communication: exploring tweets, blogs, likes and other altmetrics.
  
  Themenfeld: Informetrie
  Wissenschaftsfach: Facebook
  Objekt: Mendeley
  Land/Ort: Google+
  Hilfsmittel: Twitter
  
  
• 8
  Waltman, L. ; Calero-Medina, C. ; Kosten, J. ; Noyons, E.C.M. ; Tijssen, R.J.W. ; Eck, N.J. van ; Leeuwen, T.N. van ; Raan, A.F.J. van ; Visser, M.S. ; Wouters, P.: ¬The Leiden ranking 2011/2012 : data collection, indicators, and interpretation.
  In: Journal of the American Society for Information Science and Technology. 63(2012) no.12, S.2405-2418.
  
  Abstract: The Leiden Ranking 2011/2012 is a ranking of universities based on bibliometric indicators of publication output, citation impact, and scientific collaboration. The ranking includes 500 major universities from 41 different countries. This paper provides an extensive discussion of the Leiden Ranking 2011/2012. The ranking is compared with other global university rankings, in particular the Academic Ranking of World Universities (commonly known as the Shanghai Ranking) and the Times Higher Education World University Rankings. The comparison focuses on the methodological choices underlying the different rankings. Also, a detailed description is offered of the data collection methodology of the Leiden Ranking 2011/2012 and of the indicators used in the ranking. Various innovations in the Leiden Ranking 2011/2012 are presented. These innovations include (1) an indicator based on counting a university's highly cited publications, (2) indicators based on fractional rather than full counting of collaborative publications, (3) the possibility of excluding non-English language publications, and (4) the use of stability intervals. Finally, some comments are made on the interpretation of the ranking and a number of limitations of the ranking are pointed out.
  
  Themenfeld: Informetrie
  
  
• 9
  Frandsen, T.F. ; Wouters, P.: Turning working papers into journal articles : an exercise in microbibliometrics.
  In: Journal of the American Society for Information Science and Technology. 60(2009) no.4, S.728-739.
  
  Abstract: This article focuses on the process of scientific and scholarly communication. Data on open access publications on the Internet not only provides a supplement to the traditional citation indexes but also enables analysis of the microprocesses and daily practices that constitute scientific communication. This article focuses on a stage in the life cycle of scientific and scholarly information that precedes the publication of formal research articles in the scientific and scholarly literature. Binomial logistic regression models are used to analyse precise mechanisms at work in the transformation of a working paper (WP) into a journal article (JA) in the field of economics. The study unveils a fine-grained process of adapting WPs to their new context as JAs by deleting and adding literature references, which perhaps can be best captured by the term sculpting.
  
  Themenfeld: Internet ; Elektronisches Publizieren
  
  
• 10
  Thelwall, M. ; Wouters, P. ; Fry, J.: Information-centered research for large-scale analyses of new information sources.
  In: Journal of the American Society for Information Science and Technology. 59(2008) no.9, S.1523-1527.
  (Brief communications)
  
  Abstract: New mass publishing genres, such as blogs and personal home pages provide a rich source of social data that is yet to be fully exploited by the social sciences and humanities. Information-centered research (ICR) not only provides a genuinely new and useful information science research model for this type of data, but can also contribute to the emerging e-research infrastructure. Nevertheless, ICR should not be conducted on a purely abstract level, but should relate to potentially relevant problems.
  
  Wissenschaftsfach: Kommunikationswissenschaften
  
  
• 11
  Talja, S. ; Vakkari, P. ; Fry, J. ; Wouters, P.: Impact of research cultures on the use of digital library resources.
  In: Journal of the American Society for Information Science and Technology. 58(2007) no.11, S.1674-1685.
  
  Abstract: Currently, there exists little evidence concerning how various characteristics of research cultures are associated with patterns of use of electronic library resources. The present study addresses this gap by exploring how research-group membership, across-fields scattering of literature, and degree of establishment of research area are related to patterns of digital library use. The analytic dimensions are derived from Richard Whitley's ([1984]) theory of the social and intellectual organization of academic fields. The article represents a first attempt to operationalize Whitley's concepts in a large-scale study of e-resources use. The data used in the study were gathered in 2004 by the Finnish Electronic Library (FinElib) through a nationwide Web-based user questionnaire (N = 900). Membership in a research group significantly increased searching in journal databases, the importance of colleagues as sources of information about electronic articles and journals, and the use of alert services. A significant interaction effect was found between degree of across-fields scattering of relevant resources and degree of establishment of research fields. A high degree of across-fields scattering of relevant literature increased the number of journal databases used mainly in less established research areas whereas it influenced the use of journal databases less in established fields. This research contributes to our picture concerning the complex set of interacting factors influencing patterns of use of e-resources.
  
  
  
• 12
  Wouters, P. ; Vries, R. de: Formally citing the Web.
  In: Journal of the American Society for Information Science and Technology. 55(2004) no.14, S.1250-1260.
  
  Abstract: How do authors refer to Web-based information sources in their formal scientific publications? It is not yet weIl known how scientists and scholars actually include new types of information sources, available through the new media, in their published work. This article reports an a comparative study of the lists of references in 38 scientific journals in five different scientific and social scientific fields. The fields are sociology, library and information science, biochemistry and biotechnology, neuroscience, and the mathematics of computing. As is weIl known, references, citations, and hyperlinks play different roles in academic publishing and communication. Our study focuses an hyperlinks as attributes of references in formal scholarly publications. The study developed and applied a method to analyze the differential roles of publishing media in the analysis of scientific and scholarly literature references. The present secondary databases that include reference and citation data (the Web of Science) cannot be used for this type of research. By the automated processing and analysis of the full text of scientific and scholarly articles, we were able to extract the references and hyperlinks contained in these references in relation to other features of the scientific and scholarly literature. Our findings show that hyperlinking references are indeed, as expected, abundantly present in the formal literature. They also tend to cite more recent literature than the average reference. The large majority of the references are to Web instances of traditional scientific journals. Other types of Web-based information sources are less weIl represented in the lists of references, except in the case of pure e-journals. We conclude that this can be explained by taking the role of the publisher into account. Indeed, it seems that the shift from print-based to electronic publishing has created new roles for the publisher. By shaping the way scientific references are hyperlinking to other information sources, the publisher may have a large impact an the availability of scientific and scholarly information.
  
  Anmerkung: Beitrag in einem Themenheft über Webometrics
  
  Themenfeld: Internet ; Citation indexing ; Informetrie
  
  
• 13
  Wouters, P.: ¬The signs of science.
  In: Scientometrics. 41(1998) nos.1/2, S.225-241.
  
  Abstract: Since the 'Science Citation Index' emerged within the system of scientific communication in 1964, an intense controversy about its character has been raging: in what sense can citation analysis be trusted? This debate can be characterized as the confrontation of different perspectives on science. Discusses the citation representation of science: the way the citation creates a new reality of as well as in the world of science; the main features of this reality; and some implications for science and science policy
  
  Anmerkung: Paper presented at the 6th conference of the International Society for Scientometrics and Informetrics, Jerusalem, 16-19 June 1997
  
  Themenfeld: Informetrie ; Citation indexing