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The Man Behind Google's Ranking Algorithm

nbauman writes "New York Times interview with Amit Singhal, who is in charge of Google's ranking algorithm. They use 200 "signals" and "classifiers," of which PageRank is only one. "Freshness" defines how many recently changed pages appear in a result. They assumed old pages were better, but when they first introduced Google Finance, the algorithm couldn't find it because it was too new. Some topics are "hot". "When there is a blackout in New York, the first articles appear in 15 minutes; we get queries in two seconds," said Singhal. Classifiers infer information about the type of search, whether it is a product to buy, a place, company or person. One classifier identifies people who aren't famous. Another identifies brand names. A final check encourages "diversity" in the results, for example, a manufacturer's page, a blog review, and a comparison shopping site."

5 of 115 comments (clear)

  1. Google... by TheRealAnonymousCowa · · Score: -1, Offtopic

    In Soviet Russia, Google searches you!

  2. b`itch by Anonymous Coward · · Score: -1, Offtopic

    of FrreBSD Usenet and 3istraction may do, may not

  3. Re:North America Centric by billcopc · · Score: 0, Offtopic

    Are you suggesting that .co.uk sites are of lesser quality than Canadian and American content ?

    Next on Slashdot: Scientific study links dental health to website quality.

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    -Billco, Fnarg.com
  4. Re:Toileat seat by RobotII · · Score: -1, Offtopic

    1. In soviet russia ... something about toilet seats ... 2. ????? 3. Profit

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    http://www.robotii.co.uk/
  5. I'm off-topic by Anonymous Coward · · Score: -1, Offtopic

    In Soviet Russia, the toilet seat puts YOU down!
    In Soviet Russia, the toilet seat puts YOU up!
    In Soviet Russia, the toilet seat leaves YOU up!
    In Soviet Russia, the toilet seat sits on YOU!

    Think about those for a while.