15. The apparatus of claim 11 , wherein the program module further includes instructions for obtaining annotations for the subset after selecting the subset, by: masking a remainder of the set of comments so that only the subset is presented to reviewers; and receiving the annotations for the subset from the reviewers.
15. The apparatus of claim 11 , wherein the program module further includes instructions for obtaining annotations for the subset after selecting the subset, by: masking a remainder of the set of comments so that only the subset is presented to reviewers; and receiving the annotations for the subset from the reviewers. 16. The apparatus of claim 15 , wherein the classifier is dynamically updated based on the annotations for the subset.