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Re: SV: SV: Correlation formula as measure for SE

From:

Vladimir Batagelj <[log in to unmask]>

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Date:

Sat, 18 Dec 2010 05:44:48 +0100

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 ***** To join INSNA, visit http://www.insna.org ***** <<<-------- Carl Nordlund-------->>> > ***** To join INSNA, visit http://www.insna.org ***** > > With all due respect, and very grateful for your help, I do still think > that there is some problems with the indices in the formula you supplied > in your email.   The main problem in the construction of (dis)similarity measures   using a matrix of some relation between vertices A[u,v] is that   computing the dissimilarity d(u,v) we can't simply compare the   row A[u,.] with the row A[v,.] (and/or the column A[.,u] with the   column A[.,v]) - we can do this for vertices different from u and v;   but we have to compare A[u,u] to A[v,v] and A[u,v] to A[v,u].   If we are using in our measure both rows and columns then we are   making this comparison twice - in some measures there is a special   parameter specifying how many times we consider these comparisons   (zero, once or twice).   See Batagelj V., Ferligoj A., Doreian P.: Direct and Indirect   Methods for Structural Equivalence. Social Networks 14(1992),   63-90 or Patrick Doreian, Vladimir Batagelj, Anuška Ferligoj:   Generalized blockmodeling, CUP 2005, page 178-184.   Vlado -- Vladimir Batagelj, University of Ljubljana, FMF, Department of Mathematics   Jadranska 19, 1000 Ljubljana, Slovenia http://vlado.fmf.uni-lj.si _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.insna.org). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.

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