Analyzing interdependencies in a project portfolio using social network analysis metrics

As an extension to a previous study on the use of network mapping as a tool for visual representation of interdependencies in a project portfolio, this study employs five social network metrics (density, centralization, betweenness centrality, in-degree centrality, and out-degree centrality) for analyzing interdependencies within a project portfolio. Based on the in-degree and out-degree centrality values, projects can be classified, in terms of their interdependencies, as being: autonomous, dependent, linkage, or independent projects. An example is presented of a portfolio comprising 18 projects.