Kane, G. (2009). It’s a Network,Not an Encyclopedia: A Social Network Perspective on Wikipedia Collaboration. Academy of Management Annual Meeting Proceedings.

1. IT’S A NETWORK, NOT AN ENCYCLOPEDIA: A SOCIAL NETWORK PERSPECTIVE ON WIKIPEDIA COLLABORATION Gerald C. Kane (and Sam Ransbotham) Assistant Professor of Information Systems Carroll School of Management Boston College Paper presented at the Academy of Management Annual Meeting 2009 – Chicago Presentation adapted from http://www.profkane.com/uploads/7/9/1/3/79137/aom_2009.pptx

8. EIGENVECTOR CENTRALITY - EXAMPLE A B 1 B 2 B 3

9. EIGENVECTOR CENTRALITY - EXAMPLE A B 1 B 2 B 3

11. TWO-MODE NETWORK OF ARTICLES AND CONTRIBUTORS Squares = contributors Circles = articles Red = Featured Articles Orange = A-quality Articles Yellow = Good Articles Light Blue = B-quality Articles Dark Blue = Start-quality articles

16. Results MODEL 1 MODEL 2 Est. SE Wald Sig. Est. SE Wald Sig. Traffic 0.00** 0.00 7.76 0.005 0.00 0.00 2.26 0.13 Google Rank 0.43** 0.15 7.97 0.005 0.43** 0.16 7.51 0.01 Importance -0.82*** 0.12 49.08 0.000 -0.91*** 0.12 53.72 0.00 Contributors (A) 0.00 0.00 1.17 0.279 0.00 0.00 0.15 0.69 Contributors (D) 0.00 0.00 0.08 0.776 0.00 0.00 0.68 0.41 Edits/Contributor(A) 0.63*** 0.12 28.59 0.000 0.61** 0.12 24.35 0.00 Edits/Contributor(D) -0.06 0.05 1.67 0.196 -0.08 0.05 2.16 0.14 Anon (Article) 4.15*** 1.04 16.00 0.000 3.47*** 1.06 10.72 0.00 Anon (Discussion) -2.06** 0.75 7.54 0.006 -1.46* 0.76 3.71 0.05 Deg. Cent. 0.00** 0.00 7.29 0.01 Eig. Cent. 0.33*** 0.09 12.60 0.00 Pseudo R-Square Cox and Snell 0.379 0.474 Nagelkerke 0.407 0.510