Abigail S. Gertner

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When a tutoring system aims to provide students with interactive help, it needs to know what knowledge the student has and what goals the student is currently trying to achieve. That is, it must do both assessment and plan recognition. These modeling tasks involve a high level of uncertainty when students are allowed to follow various lines of reasoning and(More)
One of the most important problems for an intelligent tutoring system is deciding how to respond when a student asks for help. Responding cooperatively requires an understanding of both what solution path the student is pursuing, and the student’s current level of domain knowledge. Andes, an intelligent tutoring system for Newtonian physics, refers to a(More)
Although conventional tests are often used for determining a student’s overall competence, they are seldom used for determining a finegrained model. However, this problem does arise occasionally, such as when a conventional test is used to initialize the student model of an ITS. Existing psychometric techniques for solving this problem are intractable.(More)
Andes, an intelligent tutoring system for Newtonian physics, provides an environment for students to solve quantitative physics problems. Andes provides immediate correct/incorrect feedback to each student entry during problem solving. When a student enters an equation, Andes must (1) determine quickly whether that equation is correct, and (2) provide(More)
Critiquing Effective Decision Support in Time Critical Domains Abigail S Gertner Bonnie L Webber Supervisor The TraumAID system is a tool for assisting physicians during the initial de nitive management phase of patients with severe injuries Originally TraumAID was conceived as a rule based expert system combined with a planner After this architecture had(More)
OBJECTIVE A computer-based system to apply trauma resuscitation protocols to patients with penetrating thoracoabdominal trauma was previously validated for 97 consecutive patients at a Level 1 trauma center by a panel of the trauma attendings and further refined by a panel of national trauma experts. The purpose of this article is to describe how this(More)
The TraumAID system has been designed to provide on-line decision support throughout the initial definitive management of injured patients. Here we describe its retrospective evaluation and the use we subsequently made of judges comments on the validation data to evaluate TraumaTIQ, a new critiquing interface for TraumAID, investigating the question of(More)