Abstract: Methods, systems, and computer program products for processing database query results. Query results are retrieved from a database of travel itineraries based on search criteria provided by a traveler, and a subset of travel itineraries selected from the search results based on a composite profile. The traveler may identify which travel itineraries of the subset they prefer, and the result of this selection used to update a probabilistic profile of the traveler. The search results may be re-ranked using an updated composite profile, and a new subset of travel itineraries selected based on the re-ranking The traveler may indicate which travel itinerary is preferred from the new subset, and the probabilistic profile updated based thereon. The process of re-ranking search results and updating the probabilistic profile may be repeated until successive sets of ranked results match each other.