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Dive into the research topics where Satoru Izumi is active.

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Featured researches published by Satoru Izumi.


ieee international conference on cognitive informatics | 2009

User-oriented healthcare support system based on symbiotic computing

Takuo Suganuma; Hideyuki Takahashi; Satoru Izumi; Tetsuo Kinoshita; Norio Shiratori

We propose a multi-agent-based healthcare support system in ubiquitous computing environment. By utilizing knowledge about healthcare and various information including vital sign, physical location, and video data of a user under observation from real space, the system provides useful information regarding health condition effectively and in user-oriented manner. This paper describes a user-oriented healthcare support system based on concept of symbiotic computing, focusing on design and initial prototype implementation of the system.


international conference on human system interactions | 2010

Provision of Thai herbal recommendation based on an ontology

Takumi Kato; Noppadol Maneerat; Ruttikorn Varakulsiripunth; Satoru Izumi; Hideyuki Takahashi; Takuo Suganuma; Kaoru Takahashi; Yasushi Kato; Norio Shiratori

In Thailand, most of people like to use Thai herbs for their traditional medical treatments. However, since there are various sorts of Thai herbs, and the Thai herbal knowledge is complicated, it is difficult to find an appropriate one for each health condition. In order to help people to find suitable Thai herbs to cure the diseases, we have developed a system to provide herbal recommendations to users regarding their symptoms. In the development, we represented the Thai herbal knowledge in an ontology, and extracted new facts based on the ontology. Finally, the system provides appropriate herbal recommendations to users based on extracted facts and the ontology. This paper shows how we represented Thai herbal knowledge in an ontology, and how we extract the new facts based on the ontology, as well as how the system provides herbal recommendations to users.


broadband and wireless computing communication and applications | 2015

An Adaptive Multipath Routing Scheme Based on SDN for Disaster-Resistant Storage Systems

Satoru Izumi; Asato Edo; Toru Abe; Takuo Suganuma

We propose an adaptive multipath routing scheme for disaster-resistant storage systems. This scheme selects multipath routes dynamically based on available network resources under the disaster situations for effective data transmission. In this paper, we show the design and implementation of this scheme based on the Software Defined Network (SDN), and evaluate its effectiveness through simulation experiments.


symposium on applications and the internet | 2010

Using the Model Checker Spin for Web Application Design

Kei Homma; Satoru Izumi; Yuki Abe; Kaoru Takahashi; Atsushi Togashi

The number of Web applications handling online transaction is increasing, but verification of the correctness of the Web application design has been done manually. This paper proposes a method for modeling Web applications using two finite-state automata, i.e., a page automaton which specifies Web page transitions, and an internal state automaton which specifies internal state transitions of the Web application. An example Web application is modeled by the proposed method and checked using the model checker Spin.


Proceedings of the 4th International Conference on Ubiquitous Information Technologies & Applications | 2009

Design and Implementation of Healthcare Support System Based on Agent-based Framework

Hideyuki Takahashi; Satoru Izumi; Takuo Suganuma; Tetsuo Kinoshita; Norio Shiratori

This paper describes a healthcare support system based on multi-agent. This system provides wellness advice and information regarding health condition effectively and in user-oriented manner. Our system utilizes knowledge about healthcare and various information including vital sign, physical location, and video data of a user under observation from real space as a means to provide advanced healthcare support services. We propose an agent-based framework for user-oriented healthcare support system based on concept of symbiotic computing. In this paper, we describe the concept and design of the system with multi-agent-based framework and also present the prototype implementation.


asia pacific network operations and management symposium | 2016

A proposal of SDN based mobility management in multiple domain networks

Misumi Hata; Satoru Izumi; Toru Abe; Takuo Suganuma

In this paper, we propose a mobility management architecture based on Software Defined Network (SDN) for multiple domain networks. In this architecture, each SDN controller cooperates with each other to optimize communication route covering multiple domain networks for seamless IP services even when the mobile devices move to other domain. This paper presents the basic design of the architecture and protocol to cover wide area for mobility management. We also show the initial experiments to confirm the behavior of our proposed architecture.


ieee international conference on cognitive informatics | 2010

A knowledge filtering scheme using sensor data for symbiotic healthcare support system

Satoru Izumi; Yusuke Kobayashi; Hideyuki Takahashi; Takuo Suganuma; Tetsuo Kinoshita; Norio Shiratori

We propose a knowledge filtering scheme using sensor data for symbiotic healthcare support system which manages health conditions of multiple persons effectively. This scheme extracts a manageable and needed portion from a huge amount of knowledge in the various perspectives related ubiquitous information environment for effective service provision. In this paper, we introduce the design of our proposed scheme and confirm its effectiveness from the experiments.


international conference on smart homes and health telematics | 2009

An Agent-Based Healthcare Support System in Ubiquitous Computing Environments

Hideyuki Takahashi; Satoru Izumi; Takuo Suganuma; Tetsuo Kinoshita; Norio Shiratori

This paper presents an advanced healthcare support system in ubiquitous computing environment. By utilizing knowledge about healthcare and various information including vital sign, physical location, and video data of a user under observation from real space, the system provides useful information regarding health condition effectively and in user-oriented manner. In this paper, we describe a user-oriented healthcare support system focusing on design and implementation of the system with multi-agent technology.


international conference on advanced applied informatics | 2016

Performance Evaluation of SDN Based Smart Routing for Disaster-Resistant Storage Systems

Satoru Izumi; Asato Edo; Toru Abe; Takuo Suganuma

We propose a smart routing scheme for disaster-resistant storage systems. This scheme uses multipath routes and dynamically controls data routes according to the network status to achieve efficient data transmission while avoiding network bottlenecks and disconnected links in the post-disaster period. In this paper, we develop this scheme by using OpenFlow as the one of the implementation technologies of Software Defined Network (SDN). We apply this scheme to actual OpenFlow Switches and evaluate its performance considering various situations.


ieee international conference on cognitive informatics and cognitive computing | 2016

Disaster-aware smart routing scheme based on symbiotic computing for highly-available information storage systems

Satoru Izumi; Asato Edo; Toru Abe; Takuo Suganuma

In this paper, we propose a disaster-aware smart routing scheme for highly-available information storage systems. Our proposed scheme is based on the concept of Symbiotic Computing to recognize disaster status in Real Space, and provides appropriate routes form Digital Space dynamically. This realizes effective data transmission considering disaster situation and its time variation. We have designed architecture of our proposed scheme and conducted basic experimentation. In this paper, we extend its architecture based on the Symbiotic Computing and evaluate its effectiveness through complex network environments.

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