I.e. the elements of each column sum up to 1, so the matrix is a stochastic matrix (conscience more details see the computation cellule 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://claytoncrguh.jts-blog.com/32453081/le-guide-ultime-pour-améliorer-visibilité