ISCA Archive Interspeech 2005
ISCA Archive Interspeech 2005

Dialogue strategy to clarify user's queries for document retrieval system with speech interface

Teruhisa Misu, Tatsuya Kawahara

This paper addresses a dialogue strategy to clarify and constrain the queries for document retrieval systems. In spoken dialogue interfaces, users often make utterances before the query is completely generated in their mind; thus input queries are often vague or fragmental. As a result, usually many items are matched. We propose an efficient dialogue framework, where the system dynamically selects an optimal question based on information gain (IG), which represents reduction of matched items. A set of possible questions is prepared using various knowledge sources. As a bottom-up knowledge source, we extract a list of words that can take a number of objects and potentially causes ambiguity, using a dependency structure analysis of the document texts. This is complemented by top-down knowledge sources of metadata and hand-crafted questions. An experimental evaluation showed that the method significantly improved the success rate of retrieval, and all categories of the prepared questions contributed to the improvement.


doi: 10.21437/Interspeech.2005-70

Cite as: Misu, T., Kawahara, T. (2005) Dialogue strategy to clarify user's queries for document retrieval system with speech interface. Proc. Interspeech 2005, 637-640, doi: 10.21437/Interspeech.2005-70

@inproceedings{misu05_interspeech,
  author={Teruhisa Misu and Tatsuya Kawahara},
  title={{Dialogue strategy to clarify user's queries for document retrieval system with speech interface}},
  year=2005,
  booktitle={Proc. Interspeech 2005},
  pages={637--640},
  doi={10.21437/Interspeech.2005-70}
}