Google tweaks search engine to better serve users of mobile devices

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.
The changes could have a major impact on traffic to websites. Hummingbird represents the most dramatic alteration to Google’s search engine since it revised the way it indexes websites three years ago as part of a redesign called “Caffeine”, according to Amit Singhal, a senior vice-president at the company.
He estimated that the redesign would affect the analysis of about 90 per cent of the search requests that Google gets.
Hummingbird is primarily aimed at giving Google’s search engine a better grasp at understanding concepts instead of mere words, Singhal said.
The change needed to be done, Singhal said, because people have become so reliant on Google that they now routinely enter lengthy questions into the search box instead of just a few words related to specific topics.