Abstract
We have constructed a new module to process student natural language
input to CIRCSIM-Tutor, an intelligent tutoring system designed to help medical students learn to solve problems involving the negative
feedback process that regulates blood pressure in the human body.
CIRCSIM-Tutor spends most of its time engaging the student in a
natural language-based dialogue. The new input understander uses an
information extraction approach that is robust enough to handle freeform student input. We describe an evaluation of CIRCSIM-Tutor by forty-two students at Rush Medical College, with particular emphasis on the performance of the input understander.
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