Comment on ``Scientific collaboration networks. II. Shortest paths, weighted networks, and centrality"
arXiv:physics/0511084 · doi:10.1088/0256-307X/23/8/099
Abstract
In this comment, we investigate a common used algorithm proposed by Newman [M. E. J. Newman, Phys. Rev. E {\bf 64}, 016132(2001)] to calculate the betweenness centrality for all vertices. The inaccurateness of Newman's algorithm is pointed out and a corrected algorithm, also with O() time complexity, is given. In addition, the comparison of calculating results for these two algorithm aiming the protein interaction network of Yeast is shown.
3 pages, 2 tables, and 2 figures