User Models in Dialog Systems

GUMS — A General User Modeling Shell

This chapter discusses the application of various kinds of default reasoning in system-maintained models of users. In particular, we describe the general architecture of a domain-independent system for building and maintaining long-term models of individual users. The user modeling system is intended to provide a well-defined set of services for an application system interacting with various users and must build and maintain models of them. As the application system interacts with a user, it can acquire knowledge of him and pass that knowledge on to the user model maintenance system for incorporation. We describe a prototype general user model· ing shell (hereafter called GUMS) that we have implemented in Prolog. This system possesses some of the desirable characteristics we discuss.

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deductive database, default reasoning, default rule, plan recognition, user model



Alfred Kobsa and Wolfgang Wahlster

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