7. The method of claim 5 , wherein the performing text mining is performed at a time prior to a current time and wherein the method further comprises at the current time applying the grammar rules to one or more new case reports to classify the one or more new case reports as either meeting the medical condition or not meeting the medical condition.
5. The method of claim 1 , wherein representing important keywords as features further comprises creating a list of lemmas to represent keywords of interest, and the method further comprises developing a lexicon for the medical condition and building a grammar based on the lexicon, wherein the building of the grammar forms the set of grammar rules.