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)
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)
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)
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)
the function-behavior representation language FBRL was originally devised for model-ing and knowledge management of intended product behavior. This paper explores its potential for application to other-than-intended behavior in a use context, introducing consideration of the user and the environment. We found that slightly adapted building blocks from as-is(More)
A new cooperative search algorithm that introduces a GA-like selection mechanism is developed. In this algorithm, a state-space search problem is solved concurrently by multiple agents, each of which executes the Real-Time-A* algorithm. These agents compete for existence, i.e., each agent periodically reproduces ospring stochastically based on its tness(More)