1 / 2

Description of PageRank

Description of PageRank. A = a given page T 1 … T n = pages that point to page A (links) d = damping factor which can be between 0 and 1 (usually d = 0.85) C(A) = number of links going out of page A PR(A) = the PageRank of a page A

presta
Download Presentation

Description of PageRank

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Description of PageRank A = a given page T1 … Tn = pages that point to page A (links) d = damping factor which can be between 0 and 1 (usually d = 0.85) C(A) = number of links going out of page A PR(A) = the PageRank of a page A PR(A) = (1-d) + d(PR(T1)/C(T1) + … + PR(Tn)/C(Tn))

  2. Intuitive Justification • Assume there is a “random surfer” • Probability that random surfer visits a page is its PageRank value • d is the probability at each page the “surfer” will get bored and randomly jump to another page • A page has high rank: • If there are many pages that point to it • If there are some pages that point to it and have a high PageRank

More Related