Mapping the Evolution of Co-Authorship Networks

The presented work aims to identify major papers and their interrelations, topic trends over time, as well as major authors and their evolving co-authorship networks in the IV Contest 2004 data set. Paper-citation, co-citation, word co-occurrence, burst analysis and co-author analysis were used to analyze the data set. The results are visually presented as graphs, static Pajek [1] visualizations and interactive network layouts. # Diverse clusters of co-authors can be identified in the visualization. The trio of Stuart K. Card, Jock D. Mackinlay and George G. Robertson has co-authored a number of papers through their years at Xerox. These three authors have been the forerunners of research in Information Visualization. These authors are also the only group of people to have co-authored amongst themselves most often, indicating a very successful research trio.

Apart from Stuart K. Card, who seems to have significant collaborations with both Peter Pirolli and Ramana Rao, both Jock D. Mackinlay and George G. Robertson do not seem to have any significant co-authors, despite the latter having the most number of co-authors.

The visualization also indicates that most authors have not co-authored with the same author very often, except for this trio. This could be because of the evolving nature of the field and increasing number of scientists and researchers joining the field, thus giving rise to newer collaborations. This phenomenon could also explain the presence of most nodes in a light green color and being very small in size. The group consisting of nodes representing Lucy T. Nowell, Edward A. Fox, Dennis J. Brueni, and their co-authors is one such example. They possibly represent authors with fewer publications and fewer citations to their credit, on account of their relatively recent entry into the field.

Description of Unique Features: The visualization shows the results of a time series analysis of the co-authorship network. # A series of snapshots of the different stages of evolution of the co-authorship network has also been provided.

Cognitive Principles or Metaphors Employed: The link color indicates the year in which the authors began collaborating. The node color indicates the number of citations that they have received while the node size depicts the number of papers that they have published.

Ke, Weimao, Börner, Katy and Viswanath, Lalitha. (2004). Analysis and Visualization of the IV 2004 Contest Dataset. Poster Compendium, IEEE Information Visualization Conference, pp. 49-50, 2004.