Clickstream Data Yields High-Resolution Maps of Science

[furrbear]

From PLos ONE:

Abstract
Background

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.

Methodology

Over the course of 2007 and 2008, we collected nearly 1 billion user interactions recorded by the scholarly web portals of some of the most significant publishers, aggregators and institutional consortia. The resulting reference data set covers a significant part of world-wide use of scholarly web portals in 2006, and provides a balanced coverage of the humanities, social sciences, and natural sciences. A journal clickstream model, i.e. a first-order Markov chain, was extracted from the sequences of user interactions in the logs. The clickstream model was validated by comparing it to the Getty Research Institute's Architecture and Art Thesaurus. The resulting model was visualized as a journal network that outlines the relationships between various scientific domains and clarifies the connection of the social sciences and humanities to the natural sciences.

Map of science derived from user clickstream data.
(Click for larger resolution image)

(Full Article).

LJ syndication feed at plos1articles.

Comments

[furrbear.livejournal.com]

Hmmm, maybe because they're not Science?

[mellowtigger]

Very interesting! I notice, though, a very long separation between "Cognitive Science" and "Brain research" that seems a bit odd.

[backrubbear.livejournal.com]

Without spending a lot more time digging into it, I wonder if some of this is completely incidental to the fact that the portals are going to give you related information. I.e. your click trail is going to keep you near the same sets of disciplines.