Towards Unsupervised Spoken Language Understanding: Exploiting Query Click Logs for Slot Filling

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TitleTowards Unsupervised Spoken Language Understanding: Exploiting Query Click Logs for Slot Filling
Publication TypeJournal Article
Year of Publication2011
AuthorsTur, G, Hakkani-Tür D, Hillard D, Celikyilmaz A
Keywordsdomain detection, semi- supervised learning, spoken language understanding, web search queries
Abstract

Domain detection in spoken dialog systems is usually treated as a multi-class, multi-label classification problem, and training of domain classifiers requires collection and manual annotation of example utterances. In order to extend a dialog system to new domains in a way that is seamless for users, domain detec- tion should be able to handle utterances from the new domain as soon as it is introduced. In this work, we propose using web search query logs, which include queries entered by users and the links they subsequently click on, to bootstrap domain de- tection for new domains. While sampling user queries from the query click logs to train new domain classifiers, we intro- duce two types of measures based on the behavior of the users who entered a query and the form of the query. We show that both types of measures result in reductions in the error rate as compared to randomly sampling training queries. In controlled experiments over five domains, we achieve the best gain from the combination of the two types of sampling criteria.

URLhttp://gokhantur.tech.officelive.com/Documents/Dilek-IS11.pdf