Yukio Ogawa - IEEE Xplore Author Profile
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Yukio Ogawa

Also published under: Y. Ogawa

Publications
16
Citations
106
Publications by Year
19832024
Co-Authors:
Show All Co-Authors (36)
Image of author Yukio Ogawa

Yukio Ogawa

Also published under: Y. Ogawa

Affiliation

Faculty of Engineering and Design
Kagawa University
Takamatsu, Japan

Publication Topics

Biography

Yukio Ogawa (Member, IEEE) received the MS degree in science from Nagoya University, Japan, in 1994, and the PhD degree in information science and technology from Osaka University, Japan, in 2012. He joined the Hitachi Central Research Laboratory, in 1994. He is currently an associate professor with the Center for ICT Education, Muroran Institute of Technology, Japan. His research interests include distributed architectures for cloud systems and the Internet of Things. He is a member of the ACM and IEICE.(Based on document published on 22 December 2022).
Publications
16
Citations
106
Publications by Year
19832024
Co-Authors:
Show All Co-Authors (36)
Author's Published Works

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Evaluation of Applying Federated Learning to Distributed Intrusion Detection Systems Through Explainable AI

Ayaka Oki;Yukio Ogawa;Kaoru Ota;Mianxiong Dong

IEEE Networking Letters
Year: 2024 | Volume: 6, Issue: 3 | Journal Article |
Cited by: Papers (1)
We apply federated learning (FL) to a distributed intrusion detection system (IDS), in which we deploy numerous detection servers on the edge of a network. FL can mitigate the impact of decreased training data in each server and exhibit almost the same detection rate as that of the non-distributed IDS for all attack classes. We verify the effect of FL using explainable artificial intelligence (XAI...Show More

Evaluation of Applying Federated Learning to Distributed Intrusion Detection Systems Through Explainable AI

Ayaka Oki;Yukio Ogawa;Kaoru Ota;Mianxiong Dong

Year: 2024 | Volume: 6, Issue: 3 | Journal Article |

Probabilistic Control of Dynamic Crowds Toward Uniform Spatial-Temporal Coverage

Yukio Ogawa;Go Hasegawa;Masayuki Murata

IEEE Transactions on Mobile Computing
Year: 2024 | Volume: 23, Issue: 2 | Journal Article |
Cited by: Papers (2)
Vehicular mobility and connectivity vary significantly over space and time when vehicular crowd sensing covers a city-wide area for a long time period, but it is important to achieve sufficiently uniform data coverage to satisfy the requirements of an environmental monitoring scenario. Our goal is thus to ensure uniform spatial-temporal coverage of sensed data over a city-wide area despite such ve...Show More

Probabilistic Control of Dynamic Crowds Toward Uniform Spatial-Temporal Coverage

Yukio Ogawa;Go Hasegawa;Masayuki Murata

Year: 2024 | Volume: 23, Issue: 2 | Journal Article |

Hierarchical and Frequency-Aware Model Predictive Control for Bare-Metal Cloud Applications

Yukio Ogawa;Go Hasegawa;Masayuki Murata

2018 IEEE/ACM 11th International Conference on Utility and Cloud Computing (UCC)
Year: 2018 | Conference Paper |
Cited by: Papers (1)
Bare-metal cloud provides a dedicated set of physical machines (PMs) and enables both PMs and virtual machines (VMs) on the PMs to be scaled in/out dynamically. However, to increase efficiency of the resources and reduce violations of service level agreements (SLAs), resources need to be scaled quickly to adapt to workload changes, which results in high reconfiguration overhead, especially for the...Show More

Hierarchical and Frequency-Aware Model Predictive Control for Bare-Metal Cloud Applications

Yukio Ogawa;Go Hasegawa;Masayuki Murata

Year: 2018 | Conference Paper |

Cloud bursting approach based on predicting requests for business-critical web systems

Yukio Ogawa;Go Hasegawa;Masayuki Murata

2017 International Conference on Computing, Networking and Communications (ICNC)
Year: 2017 | Conference Paper |
Cited by: Papers (7)
Cloud bursting temporarily expands the capacity of cloud-based service hosted in a private data center by renting public data center capacity when the demand for capacity spikes. This paper presents a cloud bursting approach based on long- and short-term predictions of requests to a business-critical Web system to determine the optimal resources of the system deployed over private and public data ...Show More

Cloud bursting approach based on predicting requests for business-critical web systems

Yukio Ogawa;Go Hasegawa;Masayuki Murata

Year: 2017 | Conference Paper |

Virtual Network Allocation for Fault Tolerance with Bandwidth Efficiency in a Multi-tenant Data Center

Yukio Ogawa;Go Hasegawa;Masayuki Murata

2014 IEEE 6th International Conference on Cloud Computing Technology and Science
Year: 2014 | Conference Paper |
Cited by: Papers (1)
In a multitenant data center, nodes and links of tenants' virtual networks (VNs) share a single component of the physical substrate network (SN). A failure of the single SN component can thereby cause simultaneous failures of multiple nodes and links in a VN, this complex of failures must significantly disrupt the services offered on the VN. In the present paper, we clarify how the fault tolerance...Show More

Virtual Network Allocation for Fault Tolerance with Bandwidth Efficiency in a Multi-tenant Data Center

Yukio Ogawa;Go Hasegawa;Masayuki Murata

Year: 2014 | Conference Paper |

Effect of traffic locality on power consumption of distributed computing network with a data center

Yukio Ogawa;Go Hasegawa;Masayuki Murata

2012 9th International Conference on Communications (COMM)
Year: 2012 | Conference Paper |
A distributed computing network (DCN), such as a content delivery network, not only improves the response time to clients but also reduce the traffic from/to the data center over a wide area network (WAN), thereby decreasing the power consumed in the WAN. In this paper, we focus on the energy-saving aspect of the DCN and evaluate its effectiveness, especially considering traffic locality, i.e., th...Show More

Effect of traffic locality on power consumption of distributed computing network with a data center

Yukio Ogawa;Go Hasegawa;Masayuki Murata

Year: 2012 | Conference Paper |

A transport layer approach for improving interactive user experience on thin clients

Yukio Ogawa;Go Hasegawa;Masayuki Murata

2009 Australasian Telecommunication Networks and Applications Conference (ATNAC)
Year: 2009 | Conference Paper |
Return network traffic (from servers to clients) in thin-client systems is modeled as a mixture of interactive data flows corresponding to keystrokes and bulk data flows related to screen updates. Users are very sensitive to delay and jitter of the former flows. Thus our goal is to minimize the latency of interactive data transfer without increasing latency of bulk data transfer. Through simulatio...Show More

A transport layer approach for improving interactive user experience on thin clients

Yukio Ogawa;Go Hasegawa;Masayuki Murata

Year: 2009 | Conference Paper |

Agent-based remote monitoring system using the internet

Y. Ogawa;K. Saigo;E. Ohira

The 7th International Conference on Advanced Communication Technology, 2005, ICACT 2005.
Year: 2005 | Conference Paper |
Cited by: Papers (1)
To provide efficient management service for computers in a cost-effective and easy-to-introduce way, we have developed an agent-based remote monitoring system that enables interactive two-way communication between the agent in a monitored computer and a monitoring server via the Internet. The agent sends a keep-alive or alert message, receives a command from the monitoring server, and executes the...Show More

Agent-based remote monitoring system using the internet

Y. Ogawa;K. Saigo;E. Ohira

Year: 2005 | Volume: 2 | Conference Paper |

Estimating the performance of a large enterprise network for the updating of routing information

Y. Ogawa;A. Nakaya;K. Takamura;K. Yamaha;S. Saitou;K. Iwanaga;T. Koita

IEEE Workshop on IP Operations and Management
Year: 2002 | Conference Paper |
Cited by: Papers (1)
We have developed an experimental approach that allows us to estimate the performance of a large-scale enterprise network for the updating of routing information. The estimation was applied in the integration of the UFJ Bank network system on January 15, 2002. The main characteristic of this approach is the application of a formula that represents the delays in the updating of routing information ...Show More

Estimating the performance of a large enterprise network for the updating of routing information

Y. Ogawa;A. Nakaya;K. Takamura;K. Yamaha;S. Saitou;K. Iwanaga;T. Koita

Year: 2002 | Conference Paper |

A recognition method for touching Japanese handwritten characters

H. Ikeda;Y. Ogawa;M. Koga;H. Nishimura;H. Sako;H. Fujisawa

Proceedings of the Fifth International Conference on Document Analysis and Recognition. ICDAR '99 (Cat. No.PR00318)
Year: 1999 | Conference Paper |
Cited by: Papers (19)
Describes a method for recognizing Japanese handwritten characters, including touching ones. The touching characters are segmented by cutting the connected components in a pre-segmentation process. The proposed segmentation method consists of the following steps: (1) identification of the touching components by checking the size of candidate character patterns; (2) estimation of the breakpoint and...Show More

A recognition method for touching Japanese handwritten characters

H. Ikeda;Y. Ogawa;M. Koga;H. Nishimura;H. Sako;H. Fujisawa

Year: 1999 | Conference Paper |

PCHECK: a delay analysis tool for high performance LSI design

Y. Miki;M. Abe;Y. Ogawa

Proceedings of the IEEE 1995 Custom Integrated Circuits Conference
Year: 1995 | Conference Paper |
Cited by: Papers (5)
This paper describes new problems in delay analysis for high-performance LSI design and presents a static delay analysis tool PCHECK. PCHECK is characterized by (1) a new critical path trace algorithm for avoiding the error caused by signal transient time, (2) a precise delay calculation model for resistive shielding and (3) parallel delay calculation on networked workstations. Experimental result...Show More

PCHECK: a delay analysis tool for high performance LSI design

Y. Miki;M. Abe;Y. Ogawa

Year: 1995 | Conference Paper |

Timing-driven placement for general cell layout

Y. Ogawa;M. Pedram;E.S. Kuh

IEEE International Symposium on Circuits and Systems
Year: 1990 | Conference Paper |
A hierarchical technique is presented for the timing-driven placement of the general cells. It is assumed that maximum interconnection delays for nets are given. These timing constraints are transformed to net length constraints using technology-and process-dependent parameters, circuit-specific data such as input capacitance and output drivability, and the structural description, of the circuit. ...Show More

Timing-driven placement for general cell layout

Y. Ogawa;M. Pedram;E.S. Kuh

Year: 1990 | Conference Paper |

Automatic layout procedures for serial routing devices

Y. Ogawa;H. Terai;T. Kozawa

25th ACM/IEEE, Design Automation Conference.Proceedings 1988.
Year: 1988 | Conference Paper |
Cited by: Papers (1)
Conventional automatic layout systems for MOS or bipolar devices systems cannot deal with certain features, e.g. signal serialization, in serial routing devices such as Josephson devices. The authors define layout requirements and present new automatic layout procedures for such devices. These procedures are based on it subnet partitioning. They can be applied to the hierarchical design of both ma...Show More

Automatic layout procedures for serial routing devices

Y. Ogawa;H. Terai;T. Kozawa

Year: 1988 | Conference Paper |

Efficient Placement Algorithms Optimizing Delay for High-Speed ECL Masterslice LSI's

Y. Ogawa;T. Ishii;Y. Shiraishi;H. Terai;T. Kozawa;K. Yuyama;K. Chiba

23rd ACM/IEEE Design Automation Conference
Year: 1986 | Conference Paper |
Placement algorithms optimizing signal delay as well as wirability for high-speed ECL masterslice LSI's are proposed. Equivalent constraints of wire length for clock skew, data path delay, and wired-OR are classified according to upper and lower limits. To maintain such limits, a top-down method utilizing an augmented two-dimensional clustering placement with "scope" and "zone", which are new conc...Show More

Efficient Placement Algorithms Optimizing Delay for High-Speed ECL Masterslice LSI's

Y. Ogawa;T. Ishii;Y. Shiraishi;H. Terai;T. Kozawa;K. Yuyama;K. Chiba

Year: 1986 | Conference Paper |

Automatic Placement Algorithms for High Packing density VLSI

T. Kozawa;H. Terai;T. Ishii;M. Hayase;C. Miura;Y. Ogawa;K. Kishida;N. Tamada;Y. Ohno

20th Design Automation Conference Proceedings
Year: 1983 | Conference Paper |
Five placement procedures which combine three basic algorithms are developed and incorporated to our system. Evaluation of results is presented. Compared with manual design the optimum procedure reduces block size by 6.5%. The normalized area for one transistor (NA) is defined as the measure of automatic layout performance. NA is the product of wiring pitch. Optimum NA is confirmed to be 14.9 for ...Show More

Automatic Placement Algorithms for High Packing density VLSI

T. Kozawa;H. Terai;T. Ishii;M. Hayase;C. Miura;Y. Ogawa;K. Kishida;N. Tamada;Y. Ohno

Year: 1983 | Conference Paper |

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