Publications

NYT article: Map of Knowledge,

A new map of knowledge has been assembled by scientists at the research library of the Los Alamos National Laboratory. It is based on electronic data searches in which users moved from one journal to another, thus establishing associations between them.

Here is the paper:

Clickstream Data Yields High-Resolution Maps of Science

Johan Bollen1 et al, PLOS One

Abstract: Intricate maps of science have been created from citation data to visualize the structure of scientific activity. However, most scientific publications are now accessed online. Scholarly web portals record detailed log data at a scale that exceeds the number of all existing citations combined. Such log data is recorded immediately upon publication and keeps track of the sequences of user requests (clickstreams) that are issued by a variety of users across many different domains. Given these advantages of log datasets over citation data, we investigate whether they can produce high-resolution, more current maps of science.

and the low-res

map of science.