Authors in Library and Information Science
Olle Persson, Inforsk, Dep of Sociology Umeå, SE-901 87 Umeå
Social Sciences Citation Index via Web of Science (update period 2000-2003,
March) it was possible to identify 1178 papers from 10 LIS-journals: Annual
Review of Information Science and Technology, Electronic Library, Information
Processing & Management, Information Technology and Libraries, Journal
of Documentation, Journal of Information Science, Journal of the American
Society for Information Science (also with its new name: Journal of the
American Society for Information Science and Technology), Library & Information
Science Research, Library Resources & Technical Services, Scientometrics.
Research Fronts -An All Author Co-citation Map
citations among the papers of these 10 journals were identified. About
95 percent of the 588 citation links found were to papers published in
2000-2002. This means that we capture the most recent research - the research
fronts. Then the 42 most cited authors were selected, cited by at least
6 papers. The map below shows how they are co-cited. Circles are proportional
to number of citations, and the closer they get the more co-cited they
are. Lines and their thickness indicate co-citations. Since a cited paper
often have several authors, co-citation frequencies are inflated by co-authorships.
On the other hand, all cited authors are included which makes the map
more fair in terms of active researchers. See also: Persson O, All author
citations versus first author citations, Scientometrics, 50(2001)
At the bottom there is a cluster of researchers in information retrieval.
Two strong bibliometric research fronts are visible. To the upper left
we find people studying the scientific journal literature - the science
indicators community. In the upper right part of the map, there is a relatively
strong and emerging cluster including experts on the "bibliometrics"
of the World Wide Web, let's call them www-metricians.
a map below this one, that is based on all citations made by the 1178
articles to first authors of cited documents.
Identifying the Knowledge Base - A First Author Co-citation Map
all citations made by the 1178 papers, the 40 most cited first authors
were selected, cited by at least 30 papers. The map below shows how they
are co-cited. Again circles are proportional to number of citations, and
the closer they get the more co-cited they are. Lines and their thickness
indicate co-citations. A much larger set of literature is covered by including
all citations made, but there is also evident that a first author based
study ignores several names that does not appear as first authors of the
At the bottom of this map there are bibliometricians specializing in science
indicators and mapping of scientific research fields. To the upper left
we find people in information retrieval research - hard IR. The upper
middle part has people studying user-system
interactions - soft IR. To the right we find names specializing in information
seeking in different contexts. The upcoming www-metricians are hardly
visible in this map, which is based on all, and fairly old, cited documents.