To say this project/visualization is clever is an understatement!
Completely inadequate description but the interface constructs a mythic “single” reporter on any topic you choose from stories in the New York Times. The interface also gives you reporters who wrote stories on that topic. You can then find what “other” stories the mythic one reporter wrote, as well as compare the stories written by actual NYT reporters.
A project of the IBM Center for Social Software, see: NYTWrites: Exploring The New York Times Authorship.