The first thing that someone sees when they log into Facebook is the
newsfeed. The newsfeed is compiled of status updates, photos, RSVPs, and
many other things. You might think that the newsfeed just updates the
most recent posts from all of your friends, pages you like, and promoted
ads and pages. Instead, Facebook calls every action that
happens an “Edge.” Whenever someone posts a status update, tags a photo,
etc., they generate an Edge. Facebook decided to create an algorithm to
predict how interesting each story will be to each user. EdgeRank ranks
each Edge that is connected to each user and decides how high on his or
her newsfeed it should be displayed.
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