Maps of Knowledge

marzo 22, 2009

Clickstream Data Yields High-Resolution Maps of Science

Johan Bollen1*, Herbert Van de Sompel1, Aric Hagberg2#, Luis Bettencourt2,3#, Ryan Chute1#, Marko A. Rodriguez2, Lyudmila Balakireva1

1 Digital Library Research and Prototyping Team, Research Library, Los Alamos National Laboratory, Los Alamos, New Mexico, United States of America, 2 Theoretical Division, Mathematical Modeling and Analysis Group, and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico, United States of America, 3 Santa Fe Institute, Santa Fe, New Mexico, United States of America



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.


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.


Maps of science resulting from large-scale clickstream data provide a detailed, contemporary view of scientific activity and correct the underrepresentation of the social sciences and humanities that is commonly found in citation data.

The Technium: Maps of Knowledge.

The Next Fifty Years of Science

marzo 10, 2009

Presentación de Kevin Kelly el 9 de mayo de 2006 para Google TechTalks.

Vodpod videos no longer available.

more about “The Next Fifty Years of Science“, posted with vodpod
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True Films: Visual anthropology

marzo 10, 2009

Kevin Kelly
Image via Wikipedia

Gracias a Kevin Kelly por el importante aporte que hace a la Antropología visual con esté análisis y recomendación. Links a documentales y a otras buenas referencias, comentarios, fotografias y videos. No podemos perderlo de vista.

Kevin Kelly es el fundador de la revista Wired, un apasionado de las culturas y  la tecnología. Mencionan Andy and Larry Wachowski, que su libro “Out of control” fué uno de los inspiradores del filme “Matrix”. Aunque tambien sabemos de toda la influencia japonesa que pesa en los hermanos Wachowski.

Volviendo a Kevin, sin duda uno de los personajes mas comentados en la red de la información.

Buenas referencias lecturas y links en wikipedia.

True Films: Visual anthropology.

Kevin Kelly en wikipedia.

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