PLAN RECOGNITION AND EVALUATION FOR ONLINE CRITIQUING

The Traum-AID system is a tool for assisting physicians during the man agement of patients with severe injuries. Originally, Traum-AID was co nceived as a rule-based expert system combined with a planner. After t his architecture had been implemented, we began to face the issue of h ow Traum-AID could communicate its plans to physicians in order to inf luence their behavior and have a positive effect on patient outcome. T his paper describes Trauma-TIQ-the critiquing interface for Traum-AID- which examines the actions the physician intends to carry out and prod uces a critique in response to those intentions. Trauma-TIQ's two main components are a plan recognizer that uses the context of the case to disambiguate plans, and a plan evaluator that identifies errors and c alculates their significance in order to determine an appropriate resp onse. Unlike previously developed reminder systems, Trauma-TIQ evaluat es the physician's proposed plan and attempts to intervene before prob lems occur. And unlike previous critiquing systems, it is able to prov ide ongoing decision support during the planning and delivery of care. In the context of time-critical patient management it is, therefore, a more appropriate means of interaction.