8. The method of claim 7 , wherein M is a number of N-grams in said set of documents, and wherein said calculating of said second quantity comprises calculating a divergence between a probability distribution represented by said first statistical language model and a probability distribution represented by said set of probabilities.
8. The method of claim 7 , wherein M is a number of N-grams in said set of documents, and wherein said calculating of said second quantity comprises calculating a divergence between a probability distribution represented by said first statistical language model and a probability distribution represented by said set of probabilities. 9. The method of claim 8 , wherein said calculating of said second quantity further comprise raising a number to a power that is based on said divergence.