Kazuto Sasai

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A heterarchy is a dynamical hierarchical system inheriting logical inconsistencies between levels. Because of these inconsistencies, it is very difficult to formalize a heterarchy as a dynamical system. Here, the essence of a heterarchy is proposed as a pair of the property of self-reference and the property of a frame problem interacting with each other.(More)
To reduce the loads imposed on network administrators, we have proposed AIR-NMS, which is a network management support system (NMS) based on Active Information Resource (AIR). In AIR-NMS, various information resources (e.g., state information of a network, practical knowledge of network management) are combined with software agents which have the knowledge(More)
Heterarchical structure is important for understanding robustness and evolvability in a wide variety of levels of biological systems. Although many studies emphasize the heterarchical nature of biological systems, only a few computational representations of heterarchy have been created thus far. We propose here the time-state-scale re-entrant form to(More)
To reduce the loads of network administrators and to ensure the tasks, we have proposed AIR-NMS, which is a network management support system (NMS) based on Active Information Resource (AIR). In AIR-NMS, various information resources (e.g., state information of a network, practical knowledge of network management) are combined with software agents which(More)
After the 2011 earthquake off the Pacific coast of Tohoku, the importance of network services, like IP phone and e-mail, as a mean of communication in an emergency was hugely increased, but are likely to be discontinued in these situations. If that happens, network administrators have to repair the network and restart the services promptly. It is desirable(More)
This paper presents a multiagent-based ETL (Extract, Transform, Load) unit for the processing and integration of system operational data in order to improve its value. Operational data plays a vital role in managing and optimising systems. Although KDD (Knowledge Discovery and Data Mining) techniques and concepts have long existed, it is only now that we(More)
To reduce the work load of network administrators, e.g., fault detection/recovery, performance analysis and security maintenance etc., knowledge-based intelligent support system for network administrator based on active information resource (AIR-NMS) have been proposed. In this paper, we describe some design pattern and some implemented examples of(More)
Mathematical and knowledge based models are the cornerstones of most autonomie network and systems monitoring operations. The models embody knowledge and experiences of monitoring the vast varieties of systems and their behaviours. These many models constitute a lot of unshared knowledge because of differing network dynamics, heterogeneity and interests.(More)
The electricity consumption in the world is constantly increasing, and our lives become more and more dependent on electricity. There are several new paradigms proposed in the field of power grid. In Japan, especially after the Great East Japan Earthquake in March 2011, the new power system paradigms are expected to be more resilient to survive several(More)
An expert network administrator is not always stationed as disasters happen. In that case, it is desirable that a novice administrator is capable of taking part in network recovery operations as well. In this paper, an agent-based network management system in emergency situations is presented. We use the Active Information Resource based Network Management(More)