Plan Recognition and Evaluation for On-line Critiquing

  • Authors:
  • Abigail S. Gertner

  • Affiliations:
  • Learning Research and Development Center, University of Pittsburgh, Pittsburgh, PA 15260, USA

  • Venue:
  • User Modeling and User-Adapted Interaction
  • Year:
  • 1997

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Abstract

The Traum-AID system is a tool for assisting physicians during themanagement of patients with severe injuries. Originally, Traum-AID wasconceived as a rule-based expert system combined with a planner.After this architecture had been implemented, we began to face theissue of how Traum-AID could communicate its plans to physicians inorder to influence their behavior and have a positive effect onpatient outcome. This paper describes Trauma-TIQ – the critiquinginterface for Traum-AID – which examines the actions thephysician intends to carry out and produces a critique in response tothose intentions. Trauma-TIQ‘s two main components are a planrecognizer that uses the context of the case to disambiguate plans,and a plan evaluator that identifies errors and calculates theirsignificance in order to determine an appropriate response. Unlikepreviously developed reminder systems, Trauma-TIQ evaluates thephysician‘s proposed plan and attempts to intervene beforeproblems occur. And unlike previous critiquing systems, it is able toprovide ongoing decision support during the planning anddelivery of care. In the context of time-critical patient managementit is, therefore, a more appropriate means of interaction.