1. A method for categorizing an issue comprising: for each of a plurality of categories of issue, providing at least one discourse pattern for identify text sequences that meet the discourse pattern, at least one of the discourse patterns specifying that an instance of a domain term in a domain term vocabulary be present in the text sequence for the discourse pattern to be met; receiving an issue comprising a text sequence; with a processor, categorizing the text sequence based on which of the discourse patterns are met by the text sequence of the received issue; and outputting information based on the categorization of the text sequence.