{{No footnotes|date=April 2009}}

The '''network probability matrix''' describes the probability structure of a network based on the historical presence or absence of edges in a network. For example, individuals in a social network are not connected to other individuals with uniform random probability. The probability structure is much more complex. Intuitively, there are some people whom a person will communicate with or be connected more closely than others. For this reason, real-world networks tend to have clusters or cliques of nodes that are more closely related than others (Albert and Barabasi, 2002, Carley [year], Newmann 2003). This can be simulated by varying the probabilities that certain nodes will communicate. The network probability matrix was originally proposed by Ian McCulloh.

== References == * McCulloh, I., Lospinoso, J. & Carley, K.M. (2007). Probability Mechanics in Communications Networks. In ''Proceedings of the 12th International Conference on Applied Mathematics'' of the World Science Engineering Academy and Society, Cairo, Egypt. 30–31 December 2007. * "Understanding Network Science," (Archived article) https://wayback-beta.archive.org/web/20080830045705/http://zangani.com/blog/2007-1030-networkingscience * ''Linked: The New Science of Networks'', A.-L. Barabási (Perseus Publishing, Cambridge (2002). * ''Network Science'', The National Academies Press (2005){{ISBN|0-309-10026-7}}

== External links == * [http://www.casos.cs.cmu.edu Center for Computational Analysis of Social and Organizational Systems (CASOS) at Carnegie Mellon University] {{Webarchive|url=https://web.archive.org/web/20190716080533/http://www.casos.cs.cmu.edu/ |date=2019-07-16 }} * [https://web.archive.org/web/20090109013502/http://www.netscience.usma.edu/ U.S. Military Academy Network Science Center] * [http://www.circs.neu.edu/main.htm The Center for Interdisciplinary Research on Complex Systems at Northeastern University] {{Webarchive|url=https://web.archive.org/web/20080509054518/http://www.circs.neu.edu/main.htm |date=2008-05-09 }}

Category:Social statistics {{statistics-stub}}