What is your Erdos number #rstats

Nice tool here courtesy Microsoft

What is Erdos Number

The Erdős number (Hungarian pronunciation: [ˈɛrdøːʃ]) describes the “collaborative distance” between a person and mathematician Paul Erdős, as measured by authorship of mathematical papers.

The same principle has been proposed for other eminent people in other fields.

http://academic.research.microsoft.com/VisualExplorer#486937&1112639

Here are two of them-

you can see how prolific Hadley and Ripley are

http://academic.research.microsoft.com/Author/2867732/hadley-wickham