7. The method as recited in claim 6 , wherein the first word and the second word co-occur in one or more blocks of text in the plurality of documents, and wherein the count is based at least in part on a third quantity of blocks of text in the plurality of documents in which the first word and the second word co-occur.
6. The method as recited in claim 1 , wherein the third value accounts for a predicted frequency in which the first word and the second word appear in same blocks of text in the plurality of documents.