Naohiro Kaji

Community communication technology for achieving timeliness in autonomous decentralized community systems

The headway towards the outstanding future can be realized with the productive cooperation among peoples and organizations. Inspired from the spirit of cooperation in the rapidly social changing communities, we propose an autonomous decentralized community (ADC) concept. It is a group of autonomous members, whereas each member has his own objectives, complies with the community obligations and cooperates with the others for achieving his own objectives. ADC system has to meet the heterogeneous and continuously changing requirements of the community service utilization and provision. It requires support for real-time communication among community members. Therefore, we propose an autonomous decentralized community communication technique. It satisfies the fairness by granted an equal opportunity among the community members. Moreover, it approves the scalability of the system regardless with the number of the community members.

Scalable multilateral communication technique for large-scale information systems

Autonomous community information systems (ACIS) is a proposition made to contend with the extreme dynamism in the large-scale information system. ACIS is a decentralized bilateral-hierarchy architecture that forms a community of individual end-users (community members) having the same interests and demands in somewhere, at specified time. It allows the community members to mutually cooperate and share information without loading up any single node excessively. In this paper, an autonomous decentralized community communication technique is proposed to assure a flexible, scalable and a multilateral communication among the community members. The main ideas behind this communication technique are: content-code communication (communication service-based) for flexibility and multilateral benefits communication for scalable and productive cooperation among members. All members communicate productively for the satisfaction of all the community members. The scalability of the systems response time regardless of the number of the community members has been shown by simulation. Thus, the autonomous decentralized community communication technique reveals great results of the response time with continuous increasing in the total number of members.

A novel hierarchical community architecture with end-to-end delay awareness for communication delay enhancement

The extreme dynamism and the rapidly changing users requirements in current information systems promote imperative needs for the autonomous community information system (ACIS) proposition. ACIS is a decentralized architecture that forms a community of individual end-users (community members) having the same interests and demands in somewhere, at specified time. It allows the community members to mutually cooperate and share information without loading up any single node excessively. In this paper, an efficient autonomous decentralized community construction technique is proposed to reduce: the communication delays among members with take into consideration the latency among them and the required time to join/leave. This technology organizes the community members into a hierarchy of sub-communities. This paper illustrates the step-step construction technique and the membership management operations for the proposed hierarchical community structure. In addition, it studies the community communication among members to quantify and study the tradeoff between the communication delay and the membership control (join/leave) overhead.

Autonomous cooperation technique to achieve fault tolerance in service oriented community system

The advancement of mobile telecommunication and wireless technologies is required to provide local but familiar services in daily life, which has not been satisfied through the global services on the Internet. In retail business under evolving market, users request access to unknown but appropriate services based on their preference and situation, and retailers need to be aware of the current requirements of the majority of consumers in specific local trade areas. Because of the transience of the requirements of the users in their trade-areas, the services require being temporary and having the time limit. Therefore the areas of the services need to become narrower with the time. The concept of the service oriented community has been proposed to satisfy both the users and the retailers requirements. It consists of members in the specified area based on services, and they cooperate with each other in order to get mutual benefits. For realization of the service oriented community, the systems require flexibility for the effective provision of the services and fault tolerance for the stable service. In the service oriented community system, the Time Distance has been introduced as the efficient measure of the distance between the users and the retailers. The Time Distance Oriented Service System architecture has been proposed to satisfy these requirements for flexible and stable services, where the nodes are autonomously distribute services and reduce the service area based on the time distance. Here autonomous cooperation technique for achieving fault tolerance is proposed in order to satisfy the requirement of high service availability.

Autonomous cooperation technology for real-time marketing with high accuracy in autonomous decentralized community system

A group of users having a common preference and situation is called community where a service according to their preference and situation is provided. Real-time marketing for this service requires real-time property and accuracy of these preferences obtained by a service provider. Autonomous decentralized community system that consists of autonomous nodes and autonomous synchronization technology have been proposed to achieve timeliness by reducing the number of preferences data towards a service provider. Although this technology achieves high accuracy, many varieties of preference cannot be aggregated within a deadline. In this paper, heterogeneous processes about timeliness and accuracy are introduced. An autonomous cooperation technology is proposed to achieve both real-time property and accuracy. In this technology, each node autonomously switches from high-accuracy and low-response process to low-accuracy and high-response process. Consequently, high accuracy result in real-time is procured. Simulation results show effectiveness of the proposed technology.