4. The computer-implemented method of claim 3 wherein the set of prioritized features includes at least one of: a probability of a concentration of a set of critical keyword segments within a document; a percentage of the user query that includes a set of critical keywords; a percentage of the user query that includes a set of supplemental keywords; a location of each segment within a corresponding document, each segment being within the set of segment candidates; a number of critical keyword matches in a segment; and a number of supplemental keyword matches in a segment.
5. The computer-implemented method of claim 4 wherein the set of prioritized features is in order of descending priority.