Evaluating Dialogue Strategies under Communication Errors Using Computer-to-Computer Simulation

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概要

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• In this paper, experimental results of evaluating dialogue strategies of confirmation with a noisy channel are presented. First, the types of errors in task-oriented dialogues are investigated and classified as communication, dialogue, knowledge, problem solving, or objective errors. Since the errors are of different levels, the methods for recovering from errors must be examined separately. We have investigated that the dialogue and knowledge errors generated by communication errors can be recovered through system confirmation with the user. In addition, we examined that the manner in which a system initiates dialogue, namely, dialogue strategies, might influence the cooperativity of their interactions depending on the frequency of confirmations and the amount of information conveyed. Furthermore, the choice of dialogue strategies will be influenced by the rate of occurrence of communication errors in a communication channel and related to the properties of the task, for example, the difficulty in achieving a goal or the frequency of the movement of initiatives. To verify these hypotheses, we prepared a testbed task, the Group Scheduling Task, and examined it through a computer-to-computer dialogue simulation in which one system took the part of a scheduling system and the other system acted as a user. In this simulation, erroneous input for the scheduling system was also developed. The user system was designed to act randomly so that it could simulate a real human user, while the scheduling system was devised to strictly follow a particular dialogue strategy of confirmation. The experimental results showed that a certain amount of confirmation was required to overcome errors when the rate of occurrence of communication errors was high, but that excessive confirmation did not serve to resolve errors, depending on the task involved.

• 社団法人電子情報通信学会の論文
• 1998-09-25

著者

• Watanabe Taro

  Department Of Cellular And Molecular Biology Graduate School Of Biomedical Sciences Hiroshima Univer

• Watanabe Taro

  Department Of Information Science Kyoto University

• Doshita Shuji

  Department Of Electronics And Informatics Faculty Of Science And Technology Ryukoku University

• Araki Masahiro

  Ceter For Information And Multimedia Studies Kyoto University

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