Kazuya Kawashima

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

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.

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

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.

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

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.