Complex network analysis (CNA), which is the study of complex networks—their structure, properties, and dynamics—is a relatively new discipline, but with a rich history.
You can think of CNA as a generalization of social network analysis (SNA) to include non-social networks.
Social networks—descriptors of social structures through interactions—have been known as “social groups” since the late 1890s. Their systematic exploration began in the 1930s. In 1934, J.L. Moreno (Who Shall Survive? [Mor34]) developed sociograms—graph drawings of social networks. Eventually, sociograms became the de facto standard of complex network visualization.
John Barnes coined the term “SNA” in 1954 (Class and Committees in a Norwegian ...