Yasuhiko Kitamura

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Speech overlaps, undesired collisions of utterances between systems and users, harm smooth communication and degrade the usability of systems. We propose a method to enable smooth speech interactions between a user and a robot, which enables subtle expressions by the robot in the form of a blinking LED attached to its chest. In concrete terms, we show that,(More)
The WWW is a most popular service on the Internet and a huge number of WWW information sources are available. Conventionally we access WWW information sources one by one by using a browser, but WWW information integration gives a uniied view to users by i n tegrat-ing multiple WWW information sources elaborately. In this paper, we introduce our single-agent(More)
This paper presents a new method for building domain-specific web search engines. Previous methods eliminate irrelevant documents from the pages accessed using heuristics based on human knowledge about the domain in question. Accordingly , they are hard to build and can not be applied to other domains. The keyword spice method, in contrast, improves search(More)
We propose the Multiple Character-Agents Interface (MCI) as an information integration platform where multiple animated life-like characters interact with each other and with the user to retrieve and integrate information from the Internet. The MCI makes the process open to the user and allows him/her to collaborate with the character-agents. We implemented(More)
A Semantic Wiki is a collaborative Semantic Web authoring system based on the Wiki framework. It provides a scheme where anonymous users on the Internet can collaborate with each other to build a Semantic Web site. Contrasting to traditional Wikis, it is not easy for end users to author Semantic Wiki pages from scratch without knowledge of the complex(More)
A data mining system tries to semi-automatically discover knowledge by mining a large volume of raw data, but the discovered knowledge is not always novel and may contain unreasonable facts. We try to develop a discovered rule filtering method to filter rules discovered by a data mining system to be novel and reasonable ones by using information retrieval(More)