Patent Number:
7,089,252
Title:
System and method for rapid computation of PageRank
Abstract:
A method of ranking a plurality of linked documents. The method comprises obtaining a plurality of documents, and determining a rank of each document. The rank of each document is generally a function of a rank of all other documents in the plurality of documents which point to the document and is determined by solving, by equation-solving methods (including Gauss-Seidel iteration and partitioning) of a set of equations wherein: .alpha..alpha..times..times..times..times. ##EQU00001## where x.sub.i is the rank of the page indexed by i, .alpha. is a number strictly between 0 and 1.0, the summation is over all indices j such that page j points to page i, and a.sub.ij is defined to be the reciprocal of the number of links pointing out from page j (denoted d.sub.j) if page j points to page i, and zero otherwise.
Inventors:
Tomlin; John Anthony (Sunnyvale, CA), Tomkins; Andrew S. (San Jose, CA), Arasu; Arvind (Mountain View, CA)
Assignee:
International Business Machines Corporation
International Classification:
G06F 17/00 (20060101)
Expiration Date:
8/08/02018