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...
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