***** 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.