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Voice interfacs are not popular since they are neither useful nor user-friendly for non-specialist users.
We proposed , EUROPA, a new framework for developing spoken dialogue systems.
In developing EUROPA, we focused on three points : (1) acceptance of spoken language,
(2) portability in terms of domain and task, and (3) practical performance of the applied system.
The framework is applied to prototyping a car navigation system called MINOS.
MINOS is built on a portable PC, can process over 700 words of recognition vocabulary,
and is able to respond to a user's question within a few seconds.
For fast processing of the voice input, firstly we have developed BTH(Bun Template Hash method), a new method for identifying input sentences from a very large scale of keyword lattice within a short time. Thanks to BTH, spoken dialogue system based on EUROPA works fast and do not annoy users. We also applied EUROPA to prototyping a car navigation system called MINOS-II. MINOS-II deals with car navigation task of mixed initiative dialogue. First, system takes initiative to lead user to set a route for the destination. Next, on driving along the route, user takes initiative and retrieves information about the route freely. MINOS-II is built on a portable PC, can process over 2 millions of sentence patterns, and is able to respond to a user's question within a few seconds. From 2001, we seeked for new applications with voice interfaces. First one is video-recording interface, the second is multi-lingual communication tool. As for the second one, we developped a new tool for supporting multi-lingual communication between different language speakers. Conventional tools such as electric dictionaries support its user to tell his/her intention to other people, while they are not enough to support understanding answers for what he/she said. Inputting a Japanese sentence, proposed tool outputs a translated result and an ganswer windowh on which a way for answering the sentence is shown. We evaluated a prototype system and made required functions for supporting such communications clear. |
| ” Jounal Paper |
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BTH:an Efficient Parsing Algorithm for Keyword Spotting Takehide Yano, Munehiko Sasajima, and Yasuyuki Kono, Journal of the Japanese Society for Artificial Intelligence, No6, pp.658-666C2002(In Japanese) |
| ” International Conference(reviewed) |
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BTH: An Efficient Parsing Algorithm for Word-Spotting, Yasuyuki Kono, Takehide Yano, and Munehiko Sasajima, Proc. International Conference on Spoken Language Processing (ICSLP'98), pp.2067-2070, 1998 EUROPA: A Generic Framework for Developing Spoken Dialogue Systems, Munehiko Sasajima, Takehide Yano, and Yasuyuki Kono, Proc. of EUROSPEECH 1999, pp.1163-1166, 1999 A Generic Framework for Spoken Dialogue Systems and Its Application to a Car Navigation Task, Yasuyuki Kono, Takehide Yano, and Munehiko Sasajima, Proc. IEEE/JSAI International Conference on Intelligent Transportation Systems(ITSCf99), pp.728-733, 1999 MINOS-II: A Prototype Car Navigation System with Mixed Initiative Turn Taking Dialogue, Munehiko Sasajima, Takehide Yano, Taishi Shimomori and Tatsuya Uehara, Proc. of EUROSPEECH 2001, pp. 1311-1314, 2001 |
| ” National Conference(reviewed) |
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Global Communicator: A Tool for Supporting Multi-Lingual Communication through
Analysis of Speaker Input and Suggestion of Possible Responses Munehiko SASAJIMA, Kazunori IMOTO, Taishi SHIMOMORI, Noriko YAMANAKA, Makoto YAJIMA, Hiroyuki FUKUNAGA and Yasuyuki MASAI Proc. Interaction2005, 2005 (In Japanese) |