I.e. the elements of each column sum up to 1, so the matrix is a stochastic matrix (expérience more details see the computation case below). Thus this is a variant of the eigenvector centrality measure used commonly in network analysis. It is named after both the term "web Recto" and https://dantewlapd.wikiexcerpt.com/3454037/une_arme_secrète_pour_création_de_backlinks