CoaCh: A Teaching Agent that Learns Ognitiw Adaptive Computer Ht+ (COACH) is a systan that records user rxp&rnce to create prrsonalized user help. Imagine you are learning a new operating sys trrn or programming language. COACH watches your actions to build an adaptive user model (AUM) that selects appropriate advic?. ,Just as a football coach will stand on the sidelines and enconrcajole or reprimand, so age, COACH is an advisory system that does nor intrrfprr with the user s actions but comments opporurnistitally to help the user along. COACH might choose to use description, example, syntax, timing, topic, style and level of help according to user-demonstrated experience and proficitwcy. A description that advertises a command or function is helpful for getting started, but might become Ignored if it is prewntrd too often. Example information demonstrating how to perform a procedure is often valuable until the procedure is mastered. Syntax information generalizing the procedure becomes valuable when the procedure is more or less mastered. An example user is starting to write Lisp programs, typing (DEFUN. The help pane sen es as a reminder that the function being defined must be named and then given an argument list. The system
Communications of the ACM – Association for Computing Machinery
Published: Jul 1, 1994
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