12. The computer program product of claim 10 , wherein find a relationship between the generated categories and a collection of names of people, wherein each of said names of people is the name of an author of a document from said collection of documents.
12. The computer program product of claim 10 , wherein find a relationship between the generated categories and a collection of names of people, wherein each of said names of people is the name of an author of a document from said collection of documents. 14. The computer program product of claim 12 , wherein: the computer finds said relationship using a contingency table generated from said categories and said collection of names of people; and the computer plots a network graph from said contingency table.