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"Google has quietly retooled the closely guarded formula running its internet search engine to give better answers to the increasingly complex questions posed by web surfers. The overhaul came as part of an update called "Hummingbird" that Google has gradually rolled out in the past month without disclosing the modifications."

Search algorithms are used by Google in order to sort out various web pages and other information contained in those web pages to get the best content out of them. Google introduced the new search algorithm 'Google Hummingbird' in the year 2013 to make virtual search interactions more human.