tailieunhanh - Báo cáo khoa học: "PLAN REVISION IN PERSON-MACHINE DIALOGUE"

Dialogue is a cooperative process in which each speech act of the participants contributes to the overall purpose of the dialogne. Participating in a full dialogue implies understanding at each point of the dialogue session the role of each speech problem. act with respect to the rest of the dialogne. We concentrate in this paper on 02,U: I'd like to buy a car in two years. speech acts that diverge from the straightNormally an investment plan forward unfolding of the dialogue. Such 08,S: Ok. comprise8 four 8ubparte: an emergency speech acts represent dialogue deviations. fund, for unforeseen ezpenses; a. | PLAN REVISION IN PERSON-MACHINE DIALOGUE Cléo JULLIEN Jean-Charles MARTY Grenoble Research Center of CAP SESA INNOVATION 33 Chemin du Vieux Chêne 38240 Meylan France e-mail jullien@ marty@ Abstract Dialogue is a cooperative process in which each speech act of the participants contributes to the overall purpose of the dialogue. Participating in a full dialogue implies understanding at each point of the dialogue session the role of each speech act with respect to the rest of the dialogue. We concentrate in this paper on speech acts that diverge from the straightforward unfolding of the dialogue. Such speech acts represent dialogue deviations. We analyze the representation of different types and degrees of deviations and present a plan revision mechanism for dialogue management that permits their treatment in the context of advice giving dialogues between a novice user and an expert problem solver. 1 A Sample Dialogue In ESPRIT project ESTEAM-3161 we are designing a dialogue that manages the interaction between a novice user and lESTEAM-316 An Architecture for Interactive Problem Solving by Cooperating Data and Knowledge Bases supported in part by the CEC. advice-giving expert systems. The testbed application is personal financial investment 5 . As an introduction to our paper we present a dialogue in which the system obtains from the user the information needed to activate the financial expert system. 01 S Hello. Tell me about your investment problem. 02 U I d like to buy a car in two years. 03 S Ok. Normally an investment plan comprises four subparts an emergency fund for unforeseen expenses a cash need when you know you ll need a certain sum at a certain date as is the case with your car a fixed-term investment to earn the maximum in a specified time period and a long-term investment for an indefinite amount of time which can be designed either for capital growth or for a regular income. How much do you want to invest 04 U 20000. 05 S How .