Approximation Quality of the RBS Ranking Algorithm

Abstract

The RBS algorithm is a novel link-based algorithm for ranking results of a search engine. RBS may be viewed as an extension of PageRank by a parameterized ``back button'' modeling. RBS is based on the ``random surfer with back step'' model [7] similarly as PageRank is based on the simpler ``random surfer'' model [4]. To scale to real Web RBS computes merely a fast probabilistic approximation of the ranking induced by the ``random surfer with back step'' model [6].