Purpose The purpose of this study is to modernize previous work on science overlay maps by updating the underlying citation matrix, generating new clusters of scientific disciplines, enhancing visualizations, and providing more accessible means for analysts to generate their own maps. Visualization of disciplinary profiles: Enhanced science overlay mapsĬarley, S. Originality/value: The routine we advance allows users to visualize science overlay maps in VOSviewer using data from more recent Journal Citation Reports. Practical implications: Visualization of science overlay maps is now more accurate and true to the 2015 Journal Citation Reports than was the case with the previous version of the routine advanced in our paper. Also, to apply the routine we provide users need access to the Web of Science. Research limitations: As Web of Science Categories change and/or are updated so is the need to update the routine we provide.

In Figures 1â€“9 we provide basemaps of science and science overlay maps for a number of companies, universities, and technologies.

Findings: Findings appear in the form of visuals throughout the manuscript. A routine for making overlays on the basis of the map (â€œwc15.exeâ€ is available at. We first develop the citing-side, cosine-normalized map using 2015 data and VOSviewer visualization with default parameter values. We normalize this matrix using the cosine function. Using dedicated software, a matrix of 227 Ã- 227 cells is generated on the basis of whole-number citation counting. The set of Web of Science Categories in the Science Citation Index and the Social Sciences Citation Index increased from 224 in 2010 to 227 in 2015. Design/methodology/approach: We use the combined set of 2015 Journal Citation Reports for the Science Citation Index (n of journals = 8,778 and the Social Sciences Citation Index (n = 3,212 for a total of 11,365 journals. Visualization of Disciplinary Profiles: Enhanced Science Overlay Mapsĭirectory of Open Access Journals (Sweden)įull Text Available Purpose: The purpose of this study is to modernize previous work on science overlay maps by updating the underlying citation matrix, generating new clusters of scientific disciplines, enhancing visualizations, and providing more accessible means for analysts to generate their own maps.

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