When using the Google, the search engine identifies pages that satisfy our parameters. This presents the question of how to order the pages obtained.

• PageRank provides a rating of reach page.
• Google presents search results in descending order of this PageRank rating.

Conceptually, PageRank captures these principles:

• PageRank captures how important a page is; the higher the PageRank, the higher the importance of a page.
• A page is important, if many pages have links to it.
• A page is even more important, if many important pages have links to it.
• A page is not very important, if few (or no) pages have links to it.
• A page is relatively less important, if the pages that do link to it are not very important themselves.

created: 10 February 2007 last revised: 10 February 2007

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