Facebook is a social site which provides online service, platform or site that focuses on building of social networks or relation to one which are known or unknown to us. The Facebook was founded by Mark Zuckerberg in the year 2004 having its headquarter at Menlo Park.
Now this site has become world's busiest social site having billions of users at present. Many new features have been added recently to make Facebook more powerful than other site.
On Tuesday one such new feature is added to this site named as "graph engine". This new bar is placed on the top of the Facebook timeline. It is a memory-based distributed database and computation platform that supports online query processing and offline analytics on graphs. As you wrote the "Best Restaurants in Delhi 'the graph engine to your Facebook friends, their friends and your network before you will put all the information in this regard.
The first version of the graph engine that is graph search searches only four people along with their photograph and hobbies only so people wont be able to find his/her friend page or group but now it has become possible. Through this the search is done according to the intension of the people. Now the search engine is searched from English word.