Roberto Okada

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With the appearance of huge amount of Web sites, which provide a variety of services like electronic commerce, network game, search engines and so on, there are many researchers working on the definition of Web Usability. On the other hand, many researchers have been working on exploring the meaning and ways to realize the comfortability in physical sites(More)
In this paper, we report on our preliminary cross- cultural studies conducted in Chile, to increase the sense of Comfortability in Websites based on Kansei Engineering - a method for translating user's feelings and impressions into product parameters. Web Comfortability is a new concept that we are proposing, aiming at the post-Web Usability paradigm, by(More)
Information is useless if it cannot be located. This task is becoming more complex with the explosion in the amount of electronically available information. Further, in order to take advantage of the expressiveness of multimedia information, the existing information system need to extend its processing, storage and retrieval capabilities to include the new(More)
Every thing has more information or details hidden in the back than its looks. In this research, we focus on objects gathered on the Net, and our aim is the reconstruction of the tree of relevant information associated with them. For such objects, there are a lot of relevant information dispersed and stored somewhere on the Net, but it is not easy to(More)
In this paper, we propose a completely agent-based approach for Information Gathering on information network with a large number of distributed heterogeneous sources, such as Internet. Locating and accessing information in such a large distributed system which changes dynamically is challenging. Agentbased solution is most suitable in such situation. We rst(More)
In this paper, we propose a completely agent-based approach for Information Gathering on a information network with a large number of distributed heterogeneous sources, such as Internet. Locating and accessing information in such a large distributed system which changes dynamically is challenging and is most suitable for agent-based solutions. As one agent(More)
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