6. The method of claim 5 , wherein creating a vector for each of the candidate keywords further includes determining term frequency for each unique term in a given candidate keyword and storing a value for the term frequency for each term in the vector for a given candidate keyword.
5. The method of claim 4 , wherein creating a vector for the set of events includes determining term frequency for unique terms in the plurality of events in the set of events and storing a value for each term in the vector for the set of events.