文章基本信息

标题：A Graph-Based Spoken Dialog Strategy Utilizing Multiple Understanding Hypotheses
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作者：Norihide Kitaoka ; Yuji Kinoshita ; Sunao Hara 等
期刊名称：人工知能学会論文誌
印刷版ISSN：1346-0714
电子版ISSN：1346-8030
出版年度：2014
卷号：29
期号：1
页码：1-10
DOI：10.1527/tjsai.29.1
出版社：The Japanese Society for Artificial Intelligence
摘要：We regarded a dialog strategy for information retrieval as a graph search problem and proposed several novel dialog strategies that can recover from misrecognition through a spoken dialog that traverses the graph. To recover from misrecognition without seeking confirmation, our system kept multiple understanding hypotheses at each turn and searched for a globally optimal hypothesis in the graph whose nodes express understanding states across user utterances in a whole dialog. In the search, we used a new criterion based on efficiency in information retrieval and consistency with understanding hypotheses, which is also used to select an appropriate system response. We showed that our system can make more efficient and natural dialogs than previous ones.
关键词：spoken dialog strategy ; misrecognition ; response generation ; efficiency measure ; consistency measure