The structure of the resulting graph is often very complex. Since saying is had, it can have many types of bows between the nodes. The multidisciplinary investigation has shown that the social networks operate in many levels, from the kinship relations to the relations of organizations at state level (it is spoken in this case of political Networks), playing a critical role in the determination of the political agenda and the degree in which the individuals or the organizations reach their objectives or receive influences. In its simpler form, a social network is a map of all the excellent bows between all the studied nodes. &quot is spoken in this case of networks; sociocntricas" or " completas". Another option is to identify the network that surrounds a person (in the different social contexts in whom it interacts); in this case it is spoken of " personal network.

Wikipedia to rspecto thinks, that it is not necessary to forget, that in the daily language the idea of &quot has been used freely; network social" for more than a century to denote complex sets of relations between members of the social systems in all the dimensions, from the interpersonal scope to the international. In 1954, the anthropologist of the School of Manchester J.A. Barns began to use the term systematically traditionally to show to landlords of bows, including the concepts used by the social scientists: delimited groups (EP, tribes, families) and social categories (EP, sort, ethnic group). Academic like S.D. Berkowitz, Stephen Borgatti, Burt Ronald Burt, Carley Kathleen Carley, Martin Everett, Katherine Faust, Freeman Signal lantern, Granovetter Mark Granovetter, David Knoke, Krackhardt David Krackhardt, Peter Marsden, Nicholas Mullins, Rapoport Anatol Rapoport, Stanley Wasserman, Wellman Barry Wellman, R. White Douglas R. White, and White Harrison White expanded the use of the social network analysis systematic. Doubtless, it is indicated to us, that the social Network analysis has happened to be a suggestive metaphor to constitute in an analytical approach and a paradigm, with their theoretical principles, own methods network analysis software software for social network analyses and lines of investigation.