11. The method of claim 7 wherein the first value is determined by utilizing a multivariate Bernoulli model.
11. The method of claim 7 wherein the first value is determined by utilizing a multivariate Bernoulli model. 12. The method of claim 11 wherein the first value comprises: 
 log[P(A i |T)]/P(A i )] if A i present, and 
 log[P(T)]+Σlog[P(Ā i |T)/P(Ā i )] if Ai not present, wherein P(A i |T) is a conditional probability that a sentence has a feature A i given that the sentence is in a class T; P(Ā i |T) is a conditional probability that a sentence does not have a feature A i given that the sentence is in a class T; P(T) is a prior probability that a sentence is in a class T; P(A i ) is a prior probability that a sentence contains a feature A i ; and P(Ā i ) is a prior probability that a sentence does not contain a feature A i .