The PageRank function computes the PageRank values for a directed graph, weighted or unweighted.
PageRank is a link analysis algorithm. It assigns a numerical weight (between 0 and 1) to each node in a directed graph, for the purpose of measuring the relative importance of the node to the graph. The sum of the PageRank values of the nodes is 1. PageRank is applicable to any collection of entities with reciprocal quotations and references.