Inspectable User Models for Just-In-Time Workplace Training
Workplace training is most effective when the training happens just in time as part of a worker’s regular job activities. We are developing a just-in-time training system called PHelpS (Peer Help System) which can select peer helpers with whom the worker can interact. User modelling is central in the PHelpS system. For each worker, a user model is kept containing several kinds of information about the worker, in particular a knowledge profile of how well they can carry out various specific tasks. These user models permit the system to select a knowledgeable, available, and appropriate set of helpers if a worker signals that he or she needs help in carrying out a particular task. Many interesting user modelling issues arise in this work, most importantly employing the same user model in multiple ways, making the user models inspectable by a variety of users, doing knowledge-based matching and retrieval, and maintaining the accuracy of the user model over time. There are several social issues that this research has also exposed.
KeywordsUser Model Constraint Solver Student Modelling Task Step Reciprocal Teaching
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