This chapter introduces the basic network concepts and then outlines some of the major research fronts and principles under study in the network analysis field. Major research advances include the small world phenomenon, scale-free networks, influence versus selection, diffusion of innovations and behavior change, determining efficient network forms, agent based modeling and simulation, and algorithm development. Although the research topics are diverse and have been applied to a diverse set of phenomenon, they have all been fundamentally interested in connectedness and how the set of social relations can be studied. These various research topics shed some light on how these diverse areas of investigation have implications for studying human behavior, how people gain access to resources and jobs; and how social networks influence individual and system behavior.
Keywords: network models
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