# Network Centrality Using Eigenvectors

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Eigenvector centrality is one method of computing the "centrality", or approximate importance, of each node in a graph. The assumption is that each node's centrality is the sum of the centrality values of the nodes that it is connected to. The nodes are drawn with a radius proportional to their centrality. The adjacency matrix and centrality matrix for the solution are shown. The centrality matrix is an eigenvector of the adjacency matrix such that all of its elements are positive.

Contributed by: Brian Levinstein (March 2011)

Open content licensed under CC BY-NC-SA

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