***** To join INSNA, visit http://www.insna.org ***** A huge thanks to everyone for the links, files, and corrections! Thanks to GD Murphy <[log in to unmask]> Carter T. Butts <[log in to unmask]> Alexandra Marin <[log in to unmask]> Robert A. Hanneman <[log in to unmask]> Bastian Mayershofer <[log in to unmask]> Steve Abrams <[log in to unmask]> H. Russell Bernard <[log in to unmask]> [log in to unmask] <[log in to unmask]> Nicholas Harrigan <[log in to unmask]> Barry Wellman <[log in to unmask]> In SOCNET tradition, a summary of the responses: Eigenvector centrality is something like the recursive definition of rank I asked about. Standard deviation is not like the clustering coefficient. Useful References with Definitions: 1. Get UCINET or the sna for R or other software and check their help files 2. Wasserman and Faust "Social Network Analysis". 1994 3. Scott. "Social Network Analysis - A Handbock". 2000 4. http://faculty.ucr.edu/~hanneman/nettext/ Katz, Leo, & Powell, James H. (1995) "Measurement of the Tendency Toward Reciprocation of Choice" (measures of reciprocity) Freeman, Linton C. (1977) "A Set of Measures of Centrality Based on Betweenness" (relative betweenness centrality) Freeman, Linton C. (1979) "Centrality in Social Networks: Conceptual Clarification" (degree centrality, betweenness centrality, closeness centrality) Bonacich, Phillip (1972) "Factoring and Weighting Approaches to Status Scores and Clique Identification" (eigenvector centrality) I got enough people suggesting the classics that I decided to order Wasserman & Faust and Scott from Amazon afterall. Again, many thanks -Nick Guenther > > Dear networkers, > > > > I've looked around but can't find anywhere the precise mathematical > > definition of many network measures. The article > > http://en.wikipedia.org/wiki/Social_network is missing many pieces of > > information and skimps on the math, and no where else gives a complete > > list. > > > > I realize that this information is probably in references like "Social > > Network Analysis: Methods and Applications" but I do not have access > > to them (the toronto reference library doesn't have much on SNA, and I > > can't get to the guelph university library anytime soon). > > > > So, I'm looking for the actual formulas for these measures and > > concepts (and any other measures I missed): > > > > Betweenness > > Closeness > > Degree > > Eigenvector Centrality > > Clustering Coefficient - this is sort of like the standard deviation > > of networks, right? > > Cohesion > > Constraint > > Contagion > > Density > > Integration > > Group degree centralisation > > Radiality > > Reach > > Structural Equivalence > > Structural Hole > > > > Out of curiousity, I also wonder if there is a name for the measure > > that counts a node's importance by calculating the importance of all > > connected nodes? Or if there is any sort of measure that steps > > outwards into the network, weighting nodes each further step out less? > > > > Thank you for all the great resources that have already come from this list, > > -Nick Guenther > > Grade 12 Student > > Ontario, Canda _____________________________________________________________________ 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.