Extending the Role of user Feedback in Plan Recognition and Response Generation for Advice-Giving Systems: An Initial Report

In this paper we outline a model for plan recognition in advice-giving settings which incorporates user modeling techniques and we show how to extend it to allow a wider range of user feedback than in previous plan recognition models. In particular, we discuss how this model allows for clariication dialogues both in cases where there are faults in a user's plan and in cases where alternate decompositions of plans might be selected as the basis for a user-speciic response. We also describe an extension of the model which allows more general descriptions of the plans being recognized to be presented to users, due to the inclusion of certain generalized action nodes in the plan library. Since the user is then able to take the initiative to request a more speciic response from the system, there is an additional opportunity for user feedback. We conclude with some reasons why these extensions for user feedback are valuable and discuss some potential new directions for plan recognition and response generation.