***** To join INSNA, visit http://www.insna.org ***** I calculated something I called a critical mass index which was actor centrality weighted by their adoption behavior and Strang (also see Myers) calculated susceptibility and infectivity which are degree weighted adoption scores (see Valente 2005) for elaboration. Valente, T. W. (2005). Models and methods for innovation diffusion. In P. J. Carrington, J. Scott, & S. Wasserman (Eds.) Models and Methods in Social Network Analysis. Cambridge, UK: Cambridge University Press. -Tom Giancarlo Oriani wrote: >***** To join INSNA, visit http://www.insna.org ***** > >Suppose you are interested in calculate actors' centrality, but also the attributes of alters are important. >For example: you are studying the roles of different people in innovation processes: it is not only important having many ties, but also having them with alters with different attributes (i.e. different departments, organizations, etc.). Therefore, an actor could be more central not only for the number of his ties, but also for the destination of his ties. >Is there an index calculating the centrality (above all betweenness centrality) "weighted" by the attributes of the tied alters? >Thank you very much >Giancarlo Oriani > >_____________________________________________________________________ >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. > > > -- To learn more about my evaluation book go to: http://www.oup-usa.org/isbn/0195141768.html My personal webpage: http://www-hsc.usc.edu/~tvalente/ --- Thomas W. Valente, PhD Director, Master of Public Health Program http://www.usc.edu/medicine/mph/ Department of Preventive Medicine School of Medicine University of Southern California 1000 S. Fremont Ave. Building A Room 5133 Alhambra CA 91803 phone: (626) 457-6678 fax: (626) 457-6699 email: [log in to unmask] _____________________________________________________________________ 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.