Abstract
Part I: Introduction. Origins of the CIRCSIM-Tutor Project. What's Being Tutored: The Domain and the Problem. Part II: Studies of Expert Human Tutors. The Collection and Analysis of Tutoring Transcripts. The Language Used by Tutors and Students. Domain Knowledge for Problem-Solving and for Tutoring. Planning for Tutoring: What Is the Task to Be Accomplished? Carrying Out the Tutoring Task. Hinting as a Technique to Keep Students Active. A Tutoring Episode Analyzed. How Effective Are Human Tutors? Part III: Building CIRCSIM-Tutor: An Intelligent Tutoring System With Natural Language Capabilities. The Architecture of an Intelligent Tutoring System. Plans and Planning in the CIRCSIM-Tutor Project. Understanding the Student Input. Student Modeling. The Domain Knowledge Base and the Problem Solver. Generating Tutorial Dialogue. The Screen Manager. Part IV: What Have We Learned? CIRCSIM-Tutor in the Classroom. Machine Tutors and Natural Language. Where Do We All Go From Here? What We Have Learned.
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