TrustRank is a link analysis technique described in a paper by Stanford University and Yahoo! researchers for semi-automatically separating useful webpages from spam.Many web spam pages are created only with the intention of misleading search engines. These pages, chiefly created for commercial reasons, use various techniques to achieve higher-than-deserved rankings on the search engines' result pages. While human experts can easily identify spam, it is too expensive to manually evaluate a large number of pages.One popular method for improving rankings is to increase artificially the perceived importance of a document through complex linking schemes.
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  • TrustRank Teardown – Is Trust a Useful Metric?

    … Trust is a popular metric for determining the authority level of a website or page. The concept of trust is based on a research paper by Yahoo and Stanford University researchers. TrustRank is based on the idea that good sites tend to link to other good sites. TrustRank begins with a seed set of high trust sites from which they map the outbound…

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