Visualization of the Citation Impact Environments of Scientific Journals: An online mapping exercise

Persistent Link:
http://hdl.handle.net/10150/105221
Title:
Visualization of the Citation Impact Environments of Scientific Journals: An online mapping exercise
Author:
Leydesdorff, Loet
Citation:
Visualization of the Citation Impact Environments of Scientific Journals: An online mapping exercise 2006,
Issue Date:
2006
URI:
http://hdl.handle.net/10150/105221
Submitted date:
2006-03-19
Abstract:
Aggregated journal-journal citation networks based on the Journal Citation Reports 2004 of the Science Citation Index (5968 journals) and the Social Science Citation Index (1712 journals) are made accessible from the perspective of any of these journals. A vector-space model is used for normalization, and the results are brought online at http://www.leydesdorff.net/jcr04 as input-files for the visualization program Pajek. The user is thus able to analyze the citation environment in terms of links and graphs. Furthermore, the local impact of a journal is defined as its share of the total citations in the specific journal's citation environments; the vertical size of the nodes is varied proportionally to this citation impact. The horizontal size of each node can be used to provide the same information after correction for within-journal (self )citations. In the "citing" environment, the equivalents of this measure can be considered as a citation activity index which maps how the relevant journal environment is perceived by the collective of authors of a given journal. As a policy application, the mechanism of interdisciplinary developments among the sciences is elaborated for the case of nanotechnology journals.
Type:
Preprint
Language:
en
Keywords:
Citation Analysis
Local subject classification:
Visualization; Journal; Citation; Vector-space; Pajek; Map

Full metadata record

DC FieldValue Language
dc.contributor.authorLeydesdorff, Loeten_US
dc.date.accessioned2006-03-19T00:00:01Z-
dc.date.available2010-06-18T23:21:45Z-
dc.date.issued2006en_US
dc.date.submitted2006-03-19en_US
dc.identifier.citationVisualization of the Citation Impact Environments of Scientific Journals: An online mapping exercise 2006,en_US
dc.identifier.urihttp://hdl.handle.net/10150/105221-
dc.description.abstractAggregated journal-journal citation networks based on the Journal Citation Reports 2004 of the Science Citation Index (5968 journals) and the Social Science Citation Index (1712 journals) are made accessible from the perspective of any of these journals. A vector-space model is used for normalization, and the results are brought online at http://www.leydesdorff.net/jcr04 as input-files for the visualization program Pajek. The user is thus able to analyze the citation environment in terms of links and graphs. Furthermore, the local impact of a journal is defined as its share of the total citations in the specific journal's citation environments; the vertical size of the nodes is varied proportionally to this citation impact. The horizontal size of each node can be used to provide the same information after correction for within-journal (self )citations. In the "citing" environment, the equivalents of this measure can be considered as a citation activity index which maps how the relevant journal environment is perceived by the collective of authors of a given journal. As a policy application, the mechanism of interdisciplinary developments among the sciences is elaborated for the case of nanotechnology journals.en_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoenen_US
dc.subjectCitation Analysisen_US
dc.subject.otherVisualizationen_US
dc.subject.otherJournalen_US
dc.subject.otherCitationen_US
dc.subject.otherVector-spaceen_US
dc.subject.otherPajeken_US
dc.subject.otherMapen_US
dc.titleVisualization of the Citation Impact Environments of Scientific Journals: An online mapping exerciseen_US
dc.typePreprinten_US
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