Comments on: Appaholic and Inside Facebook http://20bits.com/articles/appaholic-and-inside-facebook/ Driven by Data Wed, 28 Jul 2010 21:50:46 -0700 http://wordpress.org/?v=2.8.4 hourly 1 By: Jesse http://20bits.com/articles/appaholic-and-inside-facebook/comment-page-1/#comment-458 Jesse Tue, 17 Jul 2007 17:27:39 +0000 http://20bits.com/2007/07/16/appaholic-and-inside-facebook/#comment-458 Pedram, PageRank is a variant of eigenvector centrality but includes some probabilistic factors. The idea behind eigenvector centrality is that the score of a node is proportional to the sum of the score of the nodes to which it is connected. That seems roughly equivalent to real-world influence. If I'm friends with ten Fortune 500 CEOs I'm probably have a large influence, even if they're my only friends. I'm sure there are papers out there about this that, like PageRank, add additional factors to take into account features of social networks that aren't a priori apparent, but I haven't read any. Pedram,

PageRank is a variant of eigenvector centrality but includes some probabilistic factors.

The idea behind eigenvector centrality is that the score of a node is proportional to the sum of the score of the nodes to which it is connected. That seems roughly equivalent to real-world influence. If I’m friends with ten Fortune 500 CEOs I’m probably have a large influence, even if they’re my only friends.

I’m sure there are papers out there about this that, like PageRank, add additional factors to take into account features of social networks that aren’t a priori apparent, but I haven’t read any.

]]> By: Pedram http://20bits.com/articles/appaholic-and-inside-facebook/comment-page-1/#comment-396 Pedram Mon, 16 Jul 2007 23:28:48 +0000 http://20bits.com/2007/07/16/appaholic-and-inside-facebook/#comment-396 It seems like eigenvector centrality is a clean representation of pagerank. Is it safe to say more central nodes are influencers? It seems like eigenvector centrality is a clean representation of pagerank. Is it safe to say more central nodes are influencers?

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