Information Technology Reference
In-Depth Information
Agri Sci
Ecol Sci
Geosciences
Infectious
Diseases
Environ Sci & Tech
Clinical Med
Mech Eng
Chemistry
Materials Sci
Biomed Sci
Psychological Sci.
Physics
Health & Social Issues
Computer Sci
Clinical
Psychology
Math Methods
Social Studies
Business & MGT
Econ Polit & Geography
Fig. 8.22
A global science overlay base map. Nodes represent Web of Science Categories.
Grey
links
represent degree of cognitive similarity (Reprinted from Rafols et al.
2010
with permission)
A collection of interactive science overlay maps are maintained on a web site.
8
These interactive maps allow us to explore how disciplines are related and how
individual publications from an organization are distributed across the landscape.
Figure
8.23
is a screenshot of one of the interactive maps. The mouse-over feature
highlights GSK's publications associated with the discipline of clinical medicine in
circled red dots.
Initially, the science overlay map was based only on the Science Citation Index
(SCI). The Social Science Citation Index (SSCI) was incorporated in later versions.
In spite of well-known inaccuracies in the assignation of articles to the Web of
Science Categories, Rafols and Leydesdorff have shown in a series of publications
that the overall structure is quite robust to changes in classifications, to degree of
aggregation using journals rather than subject categories, and over the time period
so far studied (2006-2010).
In the overlay step, an overlay map superimposes the areas of activity of a
given source of publications, for example, an organization or team, as seen from
its publication and referencing practices, on top of the global science base map.
One can use any document set downloaded from the Web of Science and use it as
Search WWH ::
Custom Search