Introduction to Google PageRank Algorithm
Page Rank is a topic much discussed by Search Engine Optimization (SEO)
experts. At the heart of PageRank is a mathematical formula that seems scary to
look at but is actually fairly simple to understand.
Despite this many people seem to get it wrong! In particular ?Chris Ridings
of www.searchenginesystems.net? has written a paper entitled ?PageRank
Explained: Everything you?ve always wanted to know about PageRank?, pointed to
by many people, that contains a fundamental mistake early on in the explanation!
Unfortunately this means some of the recommendations in the paper are not quite
By showing code to correctly calculate real PageRank I hope
to achieve several things in this response:
- Clearly explain how PageRank is calculated.
- Go through every example in Chris? paper, and add some more of my own,
showing the correct PageRank for each diagram. By showing the code used to
calculate each diagram I?ve opened myself up to peer review - mostly in an
effort to make sure the examples are correct, but also because the code can
help explain the PageRank calculations.
- Describe some principles and observations on website design based on
these correctly calculated examples.
Any good web designer should take the time to fully understand how PageRank
really works - if you don?t then your site?s layout could be seriously hurting
your Google listings!