PageRank Algorithm

Introduction

The PageRank algorithm was developed by Google's founder, Larry Page

PageRank Algorithm

It works by taking a webpage, and using the number, and quality of the links

Makes the assumption that more important pages are more likely to be linked to

It takes into account the inbound (from other sites) and outbound (to other sites)

A vote of 1 is shared between all the pages a page links to

Dampening

One page shouldn't have dominance over the entire site.

A dampening factor, usually 0.85 is used to stop that from happening

0.85 is normally used because the average browsing session is 6 clicks

Guesswork

The PageRank algorithm uses some guesswork to make an informed guess of the rank of the page, it is not a definitive solution to the problem of webpage relevance

It can iterate 100s to 1,000,000s of times depending on the scenario

However, the average rank of all the pages should end up at 1

This algorithm is smart enough to know the rank, even without knowing all the backlinks