Romancing Google And Demystifying PageRank
What is PageRank? PageRank is one of the important factors that determine Search Engine Results Page (SERP). It is a numerical value assigned by Google that shows the importance of a web page. When one page links to another, it is actually casting a vote for the other page. It goes to say that a page with more relevant inbound links enjoys a higher page rank. For simplicity sake, PageRank is referred to PR in this article. Applying the Mathematical Concept of PageRank Google calculates the PR of a web page using this equation: PR(A)=(1-d) + d[PR(t1)/C(t1) +.
+ PR(tn)/C(tn)] 't1.tn' are pages linking to Page A 'C' is the number of outbound links of the linking page 'd' is a damping factor set at 0.85 This is the original equation Google published when it developed PR. Whether Google uses a variation of it, only God knows. This equation, though, is essential to an understanding of PR.
Don't be scared by the above equation. For a fuller explanation of this equation with working examples read The Google Page Rank Algorithm and How it Works by Ian Rogers. The purpose of this present article is to apply the Mathematical concept of PR to your web page ranking strategy. Yes, you can organize your linking strategy to achieve high PR for your important web pages. Inbound Linking Strategy Many people assume that the Toolbar PR values of PR1 to PR10 are set on a logarithmic scale. Nobody outside Google knows for sure, but there is a very good reason for this assumption. That being the case, moving from a lower page rank to the next higher one gets increasingly difficult. So, moving from PR3 to PR4 is more difficult compared to moving from PR1 to PR2. For illustration refer to the table below. Toolbar PageRank (log base 10).
Real PageRank 0.0 - 10 1.100 - 1,000 2.
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