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Dive into the research topics where Tatsuya Kainuma is active.

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Featured researches published by Tatsuya Kainuma.


cooperative information agents | 2002

Large Scale Peer-to-Peer Experiments with Virtual Private Community (VPC) Framework

Tadashige Iwao; Makoto Okada; Kazuya Kawashima; Satoko Matsumura; Hajime Kanda; Susumu Sakamoto; Tatsuya Kainuma; Makoto Amamiya

This paper describes service models for peer-to-peer services in a mobile environment. These days, mobile devices such as PDAs and mobile telephones have the power and the capability to support a variety of services independently. In the near future, peer-to-peer services, for mobile devices in a mobile environment, will be commonplace. However, the performance of these devices is not comparable to those of PCs. The CPU performance of mobile devices is ten times less than those of PCs. Likewise, the data storage capacity of mobile devices is quite limited. Thus, it is difficult for these devices to provide peer-to-peer services such as file sharing and the access of CPU power. Hence, we propose suitable peer-to-peer service models for mobile devices. We have performed a large-scale experiment, with six hundred participants. This paper also contains the results and discussions of this experiment.


cooperative information agents | 2003

An information notification model with VPC on KODAMA in an ubiquitous computing environment, and its experiment

Tadashige Iwao; Satoshi Amamiya; Kenichi Takahashi; Guoqiang Zhong; Tatsuya Kainuma; Lusheng Ji; Makoto Amamiya

The notification of useful information to users is necessary to keep them aware of their environment and is of particular benefit in a ubiquitous computing environment. However, the amount and nature of information to be provided depends on circumstances. Too much information will confuse users. Systems used to disseminate information in a ubiquitous computing environment should not provide all information to all users, and should instead modify information disseminated depending on circumstances and context. In addition, systems designed for use in a ubiquitous computing environment need a security function for various reasons including privacy protection. For these reasons, we have developed an information dissemination model, called VPC on KODAMA. The model enables systems to provide an appropriate amount of information to users depending on circumstances and contains a security function. Using this model, we performed a large-scale experiment involving approximately one thousand participants. This paper contains the results of and discussions regarding this experiment.


International Workshop on Engineering Societies in the Agents World | 2003

You've Got Mail From Your Agent: A Location and Context Sensitive Agent System

Guoqiang Zhong; Satoshi Amamiya; Kenichi Takahashi; Tadashige Iwao; Kazuya Kawashima; Takayuki Ishiguro; Tatsuya Kainuma; Makoto Amamiya

The best way to evaluate a new technology such as the agent-oriented programming paradigm is to test it in the real world. In this article, we illustrate how multiagent systems can be deployed to analyse, design and implement a location- and context-dependent information system in a shopping mall. Our goal in this application was to help people by making personalised information available where and when it is needed in a way that disturbs them as little as possible and protects their privacy as much as possible. By employing the VPC communication framework on the KODAMA agent platform, we were able to build a shopping-support system as a collection of interacting, autonomous, flexible agents, with support functions capable of dynamically adapting services to client location and preferences as well as environment changes. Here we will give a close view of the system, examine application scenarios and discuss the pros and cons that emerged from the results of a large-scale experiment.


AP2PC'02 Proceedings of the 1st international conference on Agents and peer-to-peer computing | 2002

Execution environment of peer-to-peer services in a mobile environment

Tadashige Iwao; Makoto Okada; Kazuya Kawashima; Satoko Matsumura; Hajime Kanda; Susumu Sakamoto; Tatsuya Kainuma; Makoto Amamiya

This paper describes an execution environment for peer-to-peer services in a mobile environment. These days, mobile devices such as PDAs and mobile telephones have the power and the capability to support a variety of services independently. In the near future, peer-to-peer services will become commonplace for mobile devices in a mobile environment. However, at present, it is difficult for these devices to provide peer-to-peer services such as file sharing and the access of CPU power since the performance of these devices is not comparable to those of PCs. Therefore, suitable peer-to-peer services and their execution environment in a mobile environment are required for use on mobile devices. Hence, we propose execution environment for suitable peer-to-peer services in a mobile environment. A large-scale experiment, with six hundred participants, was conducted using a practical application of the proposed framework. This paper also contains the results and discussions of this experiment.


Archive | 2012

Wireless terminal and control method therefor

Tadashige Iwao; Tatsuya Kainuma; Kazuya Kawashima; Makoto Okada; Masatoshi Shiouchi; Yuji Wada; Juichiro Yamazaki; 裕二 和田; 正利 塩内; 重一郎 山崎; 誠 岡田; 忠重 岩尾; 和也 川島; 達也 貝沼


Archive | 1997

System for communicating among objects and establishing linkages among them and method thereof

Makoto Mizuyama; Tatsuya Kainuma


Archive | 1998

Communication method and system for objects movable in network

Tatsuya Kainuma


Archive | 2001

Method for distributing contents by peer-to-peer communication and computer program

Tadashige Iwao; Tatsuya Kainuma; Kazuya Kawashima; Makoto Okada; Masatoshi Shiouchi; Yuji Wada; Juichiro Yamazaki; 裕二 和田; 正利 塩内; 重一郎 山崎; 誠 岡田; 忠重 岩尾; 和也 川島; 達也 貝沼


Archive | 2004

SYSTEM AND METHOD OF ISSUING IC CARDS

Tatsuya Kainuma; Tsuneo Kawaguchi; 恒夫 川口; 達也 貝沼


Transactions of The Japanese Society for Artificial Intelligence | 2004

KODAMA and VPC based Framework for Ubiquitous Systems and its Experiment

Kenichi Takahashi; Satoshi Amamiya; Tadashige Iwao; Guoqiang Zhong; Tatsuya Kainuma; Makoto Amamiya

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