Abstract
In this paper I consider how user modelling can be used to improve the provision of complex explanations, and discuss in detail the user modelling component of the EDGE explanation system. This allows a user model to be both updated and used in an explanatory dialogue with the user. The model is updated based on the interactions with the user, relationships between concepts and a reviseable expertise level. The model in turn influences the planning of the explanation, allowing a more understandable explanation to be generated. I argue that both user modelling and an “interactive” style of presentation are important for explanations to be acceptable and understandable, and that each reinforces the other.
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