Abstract: In one embodiment, a knowledge base is automatically built for enriching feeds coming from different sources and that have tags of different conventions, by deducting which tags go into various categories of knowledge.

Abstract: One embodiment includes a method for automatically rebooking reservations. In one embodiment, the method can be implemented on a system. In one embodiment, changes and cancellations are tracked by service providers, and, if necessary, based on certain preprogrammed rules, automatically respond to the changed situation by changing travel bookings, making new bookings, canceling other existing bookings, and otherwise accommodating and facilitating the new travel arrangements, all in accordance with the traveler's preferences, rather then according to a default offering (or not) of the carrier.