Analysis of Science Collaboration Network of Top Uni- versities in The World

In this paper, the authors try to analysis and visualize the collaboration situation of universities in the world and the influence of distance to collaboration. Firstly the authors select 100 famous research-oriented universities in the world, and search the collaboration of scientific literature from 1975 to 2007 in Web of Science, to get the collaborative matrices of universities. Using methods of social network analysis, the authors study the structure of collaborative network among 100 universities, and a new index is designed to measure and rank the collaboration of universities.