Tailoring advice to a user means finding a plan by which she can reach her goal, and supplying the missing knowledge that the needs to successfully execute the plan. The paper presents a method to determine the kind and amount of this missing knowledge for an already generated domain plan. We show that both a user's knowledge and his capabilities to perform actions must be taken into account when deciding on a plan presentation that is suitable for him. We also argue that it may be useful to consider issues of plan presentation already during the planning process, and show how this can be accomplished in a planning system.
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