Abstract: Aspects of the invention include methods of generating models for scoring patient notes. The methods include receiving a sample of patient notes, extracting a plurality of ngrams from the sample of patient notes, clustering the plurality of extracted ngrams that meet a similarity threshold into a plurality of lists, identifying a feature associated with each of the plurality of lists based on the ngrams in that list and designating at least one ngram in each list as evidence of the feature associated with that list. The identified features and designated ngram are stored in models for scoring patient notes.