She says her mind is like an internet search engine that searches for photographs.

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Google is also in a unique position to know what information people are most interested in seeing and when they want it based on the giant volume of Web searches processed by the search engine daily.

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Norvig pays a small team of contractors to just do random searches all day to test the Google engine, in the hope of teaching it to learn on its own.

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The current version of the search engine can do both basic Web searches and image searches.

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On the other hand, someone who searches for a specific job on a search engine or decides to look at a certain company's website probably has more relevant experience, he said.

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Want to understand what the latter part of that statement means?. At the end of the day, all Google needs is more devices which conduct internet searches which string right back to the Google search engine.

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For example, in a February 2012 survey by the Pew Research Center, 73 percent of 2, 253 adult respondents answered they would not be OK with a search engine (such as Google) keeping track of their searches and using the results to personalize future searches.

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Since contextual information can accelerate searches on mobile devices, Microsoft built more ways to scour the web via its search engine, Bing.

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On Tuesday, Facebook unveiled a smart search engine - called Graph Search - that allows users to make "natural" searches of content shared by their friends.

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