Links between Kleinberg´s hubs and authorities, correspondence analysis, and Markov chains

We show that Kleinberg´s hubs and authorities model is closely related to both correspondence analysis, a well-known multivariate statistical technique, and a particular Markov chain model of navigation through the Web. The only difference between correspondence analysis and Kleinberg´s method is the use of the average value of the hubs (authorities) scores for computing the authorities (hubs) scores, instead of the sum for Kleinberg´s method. We also show that correspondence analysis and our Markov model are related to SALSA, a variant of Kleinberg´s model.