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Interactive overlays of journals and the measurement of interdisciplinarity on the basis of aggregated journal-journal citations

Loet Leydesdorff, Ismael Rafols, Chaomei Chen
2013 Journal of the American Society for Information Science and Technology  
Acknowledgement We would like to thank Nees Jan van Eck and Ludo Waltman for suggestions and comments, and are grateful to Thomson-Reuters for access to the data. We acknowledge support by the  ...  At the level of aggregated journal-journal citations, patterns can be expected to emerge from the aggregation and from interactions among the local actions.  ...  On the basis of this data an aggregated journal-journal citation matrix of 10,675 journals was constructed. 7 Of the 10,675 2 = 113,955,625 cells only 2,207,789 (= 1.94%) are filled with values larger  ... 
doi:10.1002/asi.22946 fatcat:en4q3n24areitotkjpbjsehn2a

Interactive Overlays of Journals and the Measurement of Interdisciplinarity on the basis of Aggregated Journal-Journal Citations [article]

Loet Leydesdorff, Ismael Rafols, Chaomei Chen
2013 arXiv   pre-print
The maps are based on the 10,000+ journals contained in the Journal Citation Reports (JCR) of the Science and Social Science Citation Indices (2011).  ...  The "citing" dimension of the aggregated journal-journal citation matrix was found to provide a more comprehensive description than the matrix based on the cited archive.  ...  We acknowledge support by the ESRC project 'Mapping the Dynamics of Emergent Technologies' (RES-360-25-0076).  ... 
arXiv:1301.1013v2 fatcat:ltjecux4fze3jlvi3yo3ppquei

Journal Maps, Interactive Overlays, and the Measurement of Interdisciplinarity on the Basis of Scopus Data (1996-2012) [article]

Loet Leydesdorff, Félix de Moya-Anegón, Vicente P. Guerrero-Bote
2014 arXiv   pre-print
Using Scopus data, we construct a global map of science based on aggregated journal-journal citations from 1996-2012 (N of journals = 20,554).  ...  Rao-Stirling diversity can be used as a measure of interdisciplinarity in the sets under study.  ...  We are grateful to Lykle Voort of the Amsterdam computer center SARA for his support. Some of this work was carried out on the Dutch national e-infrastructure with the support of the SURF Foundation.  ... 
arXiv:1310.4966v3 fatcat:s6wj4u7oondpxbqgo4pp2tkvlq

Journal maps, interactive overlays, and the measurement of interdisciplinarity on the basis of Scopus data (1996-2012)

Loet Leydesdorff, Félix de Moya-Anegón, Vicente P. Guerrero-Bote
2014 Journal of the Association for Information Science and Technology  
Using Scopus data, we construct a global map of science based on aggregated journal-journal citations from 1996-2012 (N of journals = 20,554).  ...  Rao-Stirling diversity can be used as a measure of interdisciplinarity in the sets under study.  ...  Some of this work was carried out on the Dutch national e-infrastructure with the support of the SURF Foundation.  ... 
doi:10.1002/asi.23243 fatcat:r5rreobpazcjzjdyr7bbs6g7je

Assessing the crossdisciplinarity of technology-enhanced learning with science overlay maps and diversity measures

Marco Kalz, Marcus Specht
2013 British Journal of Educational Technology  
Based on a general discussion of the concept interdisciplinarity and a summary of the discussion in the field two empirical methods from scientometrics are introduced and applied.  ...  Science overlay maps and the Rao-Stirling-Diversity index are used to analyze the TEL field with a scientometric analysis.  ...  The most useful indicator for a citation analysis to measure the interdisciplinarity is the percentage of citations outside of the discipline of the citing paper.  ... 
doi:10.1111/bjet.12092 fatcat:rlsoblflxnaoxdfd77pwq2iv3e

Interactive overlays: A new method for generating global journal maps from Web-of-Science data

Loet Leydesdorff, Ismael Rafols
2012 Journal of Informetrics  
Recent advances in methods and techniques enable us to develop an interactive overlay to the global map of science based on aggregated citation relations among the 9,162 journals contained in the Science  ...  Our approach focuses on the positions of journals in the multidimensional space spanned by the aggregated journal-journal citations.  ...  Andrea Scharnhorst, Nees-Jan van Eck, and Ludo Waltman provided comments on previous drafts.  ... 
doi:10.1016/j.joi.2011.11.003 fatcat:ynl7qyu7k5a5rosk56kj4vh7le

Aggregated journal-journal citation relations in Scopus and Web-of-Science matched and compared in terms of networks, maps, and interactive overlays [article]

Loet Leydesdorff, Félix de Moya-Anegón, Wouter de Nooy
2014 arXiv   pre-print
We compare the network of aggregated journal-journal citation relations provided by the Journal Citation Reports (JCR) 2012 of the Science and Social Science Citation Indexes (SCI and SSCI) with similar  ...  Network analysis was then pursued on the set of journals shared between the two databases and the two sets of unique journals.  ...  Some of this work was carried out on the Dutch national e-infrastructure with the support of the SURF Foundation. We acknowledge Thomson-Reuters for providing us with JCR data.  ... 
arXiv:1404.2505v3 fatcat:yf3hog7x5rhjpmofewn7omicyi

Measuring Interdisciplinary Research Categories and Knowledge Transfer: A Case Study of Connections between Cognitive Science and Education

Alan L. Porter, Stephen F. Carley, Caitlin Cassidy, Jan Youtie, David J. Schoeneck, Seokbeom Kwon, Gregg E. A. Solomon
2019 Perspectives on Science  
In particular, we are in the process of studying the interchange of research-based knowledge between Cognitive Science and Educational Research.  ...  This is a "bottom-up" paper in the sense that it draws lessons in defining disciplinary categories under study from a series of empirical studies of interdisciplinarity.  ...  discipline on the basis of the predominant WoSCs (better aggregated to macro-disciplines) in which the researcher publishes.  ... 
doi:10.1162/posc_a_00317 fatcat:tzz5srtwvzgfvi7uqpj33bbbdy

Aggregated journal-journal citation relations in scopus and web of science matched and compared in terms of networks, maps, and interactive overlays

Loet Leydesdorff, Félix de Moya-Anegón, Wouter de Nooy
2015 Journal of the Association for Information Science and Technology  
Some of this work was carried out on the Dutch national e-infrastructure with the support of the SURF Foundation. We acknowledge Thomson-Reuters for providing us with JCR data.  ...  Acknowledgement We are grateful to Lykle Voort of the Amsterdam computer center SARA for his support, and grateful to Wim Meester of the Scopus team and two anonymous referees for their comments.  ...  In the case of Scopus data, we decided at the time to use the aggregated set of 1996-2012 because (i) Scopus data is differently organized-that is, not on a yearly basis like JCR-and (ii) the set of journals  ... 
doi:10.1002/asi.23372 fatcat:zvh5ukaxv5d4hiovcp2fprczxm

Practical research proposal and publication profiling

Alan L Porter, David J Schoeneck, David Roessner, Jon Garner
2010 Research Evaluation  
Our Integration measure and science overlay maps show that these ROLE/REESE programs have facilitated interdisciplinary research.  ...  We investigate NSF award summaries, proposal references, publications by the funded researchers, and citations to those publications.  ...  From the latter, one can search and retrieve information on publication sets, citations by them, and citations to them.  ... 
doi:10.3152/095820210x492512 fatcat:tghpzmw6sjdohpwf74ftbjzbka

How science maps reveal knowledge transfer: new measurement for a historical case [article]

Sándor Soós (Dept. Science Policy and Scientometrics, Library and Information Centre of the Hungarian Academy of Sciences, MTA)
2014 arXiv   pre-print
In this paper we propose novel methods of measuring knowledge diffusion/integration based on previous applications of the overlay methodology.  ...  Modelling actors of science via science (overlay) maps has recently become a popular practice in Interdisciplinarity Research (IDR).  ...  In IDR special focus is being put on inventing measures that summarize this multifaceted information within overlay maps in order to quantify the multi-and/or interdisciplinarity of research profiles.  ... 
arXiv:1401.5675v1 fatcat:uyggfxqzofc5rcggzjwf5hwyca

Tracking the evolution of waste recycling research using overlay maps of science

Gaizka Garechana, Rosa Rio, Ernesto Cilleruelo, Javier Gavilanes
2012 Waste Management  
Using publication and citation data, it compares the degree of interdisciplinarity and the research performance of a number of Innovation Studies units with that of leading Business & Management schools  ...  On the basis of various mappings and metrics, this study shows that: (i) Innovation Studies units are consistently more interdisciplinary in their research than Business & Management schools; (ii) the  ...  Loet Leydesdorff acknowledges Thomson Reuters for the use of Journal Citation Reports data.  ... 
doi:10.1016/j.wasman.2012.01.017 pmid:22342638 fatcat:2y6cbr5lhjemfp6nvon43pxada

Interactive Overlay Maps for US Patent (USPTO) Data Based on International Patent Classifications (IPC) [article]

Loet Leydesdorff, Duncan Kushnir, Ismael Rafols
2012 arXiv   pre-print
We report on the development of an interface to the US Patent and Trademark Office (USPTO) that allows for the mapping of patent portfolios as overlays to basemaps constructed from citation relations among  ...  These basemaps and overlays can be generated at both the 3-digit and 4-digit levels of the International Patent Classifications (IPC) of the World Intellectual Property Organization (WIPO).  ...  The aggregated citation matrix at the 3-digit and 4-digit level of IPC is normalized using the cosine as a similarity measure among citation distributions in different classes (Ahlgren et al., 2003; Jaffe  ... 
arXiv:1210.6456v2 fatcat:lfxui36cvbe5jbgmueyhizaemm

Interdisciplinarity at the Journal and Specialty Level: The changing knowledge bases of the journal Cognitive Science [article]

Loet Leydesdorff, Robert L. Goldstone
2013 arXiv   pre-print
"Interdisciplinarity" should be defined differently at the level of journals and of specialties.  ...  The fluidity and fuzziness of the interdisciplinary delineations in the different visualizations can be reduced and clarified using factor analysis.  ...  Acknowledgement We are grateful to Andrei Mogoutov and Peter van den Besselaar for comments and suggestions, and to Thomson-Reuters for allowing to use their data.  ... 
arXiv:1212.0823v3 fatcat:bahc3lu3dbeivjswwsnuch7zni

How interdisciplinary is nanotechnology?

Alan L. Porter, Jan Youtie
2009 Journal of nanoparticle research  
We are developing empirical measures to gauge and visualize the extent and nature of interdisciplinary interchange.  ...  In this study, we address the nature of crossdisciplinary linkages using "science overlay maps" of articles, and their references, that have been categorized into subject categories.  ...  The map is based on similarity measures in the aggregated citing patterns of ''scientific disciplines'' as measured by using Web of Science Subject Categories.  ... 
doi:10.1007/s11051-009-9607-0 pmid:21170124 pmcid:PMC2988207 fatcat:m3mmm7lynbh3hbes7jwyymxnr4
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