Yuji Horikoshi

Autonomous Community Integration and Division Technology for High Response Service

In the retail business under the evolving market, the users solicit to use the appropriate services based on their preferences. In addition, the service providers insist on seizing the current requirements of the users for customizing adequate services. Such requirements can not be satisfied with the conventional centralized system, due to the lack inflexibility. Autonomous decentralized community system has been proposed to realize for achieving such requirements. Community is devised as a group that constructed among wireless base stations, and each member of community collaborates with the others autonomously. Thus, the system realizes flexibility, but since the system has no centralized existence for system monitoring, improvement in timeliness is still considered as a remaining problem. In this paper, autonomous construction technology is proposed to improve the timeliness of a community according to the number of nodes. The members of a community autonomously integrate and divide to adjust the optimal size of the community

Multi-layer autonomous community overlay network for enhancing communication delay

Autonomous decentralized community communication system (ADCCS) is a decentralized architecture that forms a community of individual and autonomous end-users (community members) having the same interests and demands in somewhere, at specified time. It enables them to mutually cooperate and share information without loading up any single node excessively. ADCCS does not seize the advantage of heterogeneity of the community nodes-nodes latencies. Thus, this paper proposes ADCCS-multilayer. It is an autonomous decentralized multi-layer community overlay network that enhances the communication delay among the community members. This paper presents an efficient step-step construction technique to reduce both the communication delays among members and the required time to join/leave. Experimental results show that ADCCS-multilayer enhances the community communication delay.

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 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.

Autonomous construction technology of community for achieving high assurance service

In the retail business under the evolving market, the users solicit continuously to utilize the appropriate services based on their preferences and situations. Such requirements can not be satisfied with the conventional centralized system, due to the dynamic changes of user requirements. Autonomous Decentralized Community System (ADCS) has been proposed to realize a system that satisfies such requirements. The system realizes flexibility to cope with dynamic changes in the environment, but since ADCS is a pure decentralized system, the system has no existence that monitors the whole system to maintain timeliness, which is an essential factor for assurance. In this paper, Autonomous Construction Technology is proposed to improve the response time, which integrates and divides a community in order to achieve the optimal size depending on the changes in environment. The effectiveness is verified through simulation.

An autonomous decentralized community overly network division and integration technology for achieving timeliness

Autonomous community overlay network (CON) 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 enables them to mutually cooperate and share information without loading up any single node excessively. For flexible and efficient communication among community members, an autonomous multilayer community overlay network (multilayer-CON) is proposed. This paper illustrates an approach to reconstruct the multilayer-CON on a top of a dynamic, unpredictable, and heterogeneous Internet environment by divide and integrate sub-communities. Furthermore, it evaluates the performance of the community communication over the multilayer-CON and gives evidence of the existence of the tradeoff relationship between the communication delay and construction overhead.