2. The method of claim 1 , wherein a frequency with which a candidate word group occurs in the corpus is based upon a combination of frequencies of one or more of the words from the candidate word group in the corpus.
2. The method of claim 1 , wherein a frequency with which a candidate word group occurs in the corpus is based upon a combination of frequencies of one or more of the words from the candidate word group in the corpus. 3. The method of claim 2 , wherein the combination of frequencies comprises an aggregation of the frequencies of the one or more of the words from the candidate word group in the corpus.