The system processes 12 million tweets every day, rejecting almost 80 percent of them as noise. The rest fall into about 6,000 clusters that the system categorizes as different types of news events. That’s all done by 13 servers running 10 different algorithms.
By comparison, Reuters employs some 2,500 journalists around the world who together generate about 3,000 news alerts every day, using a variety of sources, including Twitter. Of these, around 250 are written up as news stories.
