How Google's Human Search Quality Raters Assign a URL Rating

Google ran over 20,000 experiments in 2010 to come up with the 500 modifications they felt best improved search results for users. While there are over 200 factors, or signals, these constant updates affect their relevance and how they impact sear...

Source: http://feedproxy.google.com/~r/sewblog/~3/xiSr1Dg3UyA/How-Googles-Human-Search-Quality-Raters-Assign-a-URL-Rating

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