Ryoichi Kawahara

98 papers A* 3A 3B 18C 1Journal 44Unranked 29

Year	Rank	Type	Title / Venue / Authors
2025	J	`jnl`	Optimization of Data and Model Transfer for Federated Learning to Manage Large-Scale Network. IEEE Trans. Netw. Serv. Manag. Kengo Tajiri, Ryoichi Kawahara
2024	—	`conf`	Optimizing IoT Data Collection for Federated Learning Under Constraint of Wireless Bandwidth. ICC Kengo Tajiri, Ryoichi Kawahara
2023	B	`conf`	Data Transfer for Balancing Model Convergence and Training Time in Federated Learning. GLOBECOM Kengo Tajiri, Ryoichi Kawahara
2023	—	`conf`	Optimizing Data Distribution for Federated Learning Under Bandwidth Constraint. ICC Kengo Tajiri, Ryoichi Kawahara
2023	J	`jnl`	Optimizing Edge-Cloud Cooperation for Machine Learning Accuracy Considering Transmission Latency and Bandwidth Congestion. IEICE Trans. Commun. Kengo Tajiri, Ryoichi Kawahara, Yoichi Matsuo
2022	J	`jnl`	Cooperative Multi-Agent Deep Reinforcement Learning for Dynamic Virtual Network Allocation With Traffic Fluctuations. IEEE Trans. Netw. Serv. Manag. Akito Suzuki, Ryoichi Kawahara, Shigeaki Harada
2022	J	`jnl`	Network Tomography for Information-Centric Networking. IEICE Trans. Commun. Ryoichi Kawahara, Takuya Yano, Rie Tagyo, Daisuke Ikegami
2022	B	`conf`	Optimizing Edge-Cloud Cooperation for Machine Learning Accuracy Considering Transmission Latency and Bandwidth Congestion. NOMS Kengo Tajiri, Ryoichi Kawahara, Yoichi Matsuo
2022	J	`jnl`	Virtual Network Control for Power Bills Reduction and Network Stability. IEEE Trans. Netw. Serv. Manag. Ryota Nakamura, Ryoichi Kawahara, Takefumi Wakayama, Shigeaki Harada
2021	B	`conf`	Cooperative Multi-Agent Deep Reinforcement Learning for Dynamic Virtual Network Allocation. ICCCN Akito Suzuki, Ryoichi Kawahara, Shigeaki Harada
2021	J	`jnl`	Network Tomography Using Routing Probability for Undeterministic Routing. IEICE Trans. Commun. Rie Tagyo, Daisuke Ikegami, Ryoichi Kawahara
2020	J	`jnl`	Extendable NFV-Integrated Control Method Using Reinforcement Learning. IEICE Trans. Commun. Akito Suzuki, Ryoichi Kawahara, Masahiro Kobayashi, Shigeaki Harada, Yousuke Takahashi, Keisuke Ishibashi
2020	J	`jnl`	Modeling Upper Layer Reaction to QoS Degradation as a Congestion Avoidance Mechanism. IEICE Trans. Commun. Shigeaki Harada, Keisuke Ishibashi, Ryoichi Kawahara
2019	J	`jnl`	Extendable NFV-Integrated Control Method Using Reinforcement Learning. CoRR Akito Suzuki, Ryoichi Kawahara, Masahiro Kobayashi, Shigeaki Harada, Yousuke Takahashi, Keisuke Ishibashi
2019	J	`jnl`	Inferring Latent Traffic Demand Offered to an Overloaded Link with Modeling QoS-Degradation Effect. IEICE Trans. Commun. Keisuke Ishibashi, Shigeaki Harada, Ryoichi Kawahara
2018	J	`jnl`	Anomaly Detection and Interpretation using Multimodal Autoencoder and Sparse Optimization. CoRR Yasuhiro Ikeda, Keisuke Ishibashi, Yuusuke Nakano, Keishiro Watanabe, Ryoichi Kawahara
2018	—	`conf`	Extendable NFV-Integrated Control Method Using Reinforcement Learning. ICC Akito Suzuki, Masahiro Kobayashi, Yousuke Takahashi, Shigeaki Harada, Keisuke Ishibashi, Ryoichi Kawahara
2018	—	`conf`	Network Tomography Using Routing Probability for Virtualized Network. ICC Rie Tagyo, Daisuke Ikegami, Ryoichi Kawahara
2018	B	`conf`	Root-Cause Diagnosis Using Logs Generated by User Actions. GLOBECOM Hiroki Ikeuchi, Akio Watanabe, Takehiro Kawata, Ryoichi Kawahara
2018	—	`conf`	Root-Cause Diagnosis for Rare Failures Using Bayesian Network with Dynamic Modification. ICC Yoichi Matsuo, Yuusuke Nakano, Akio Watanabe, Keishiro Watanabe, Keisuke Ishibashi, Ryoichi Kawahara
2018	—	`conf`	System design for predictive road-traffic information delivery using edge-cloud computing. CCNC Ryoichi Shinkuma, Shingo Kato, Masahiro Kanbayashi, Yasuhiro Ikeda, Ryoichi Kawahara, Takanori Hayashi
2018	J	`jnl`	Workflow Extraction for Service Operation Using Multiple Unstructured Trouble Tickets. IEICE Trans. Inf. Syst. Akio Watanabe, Keisuke Ishibashi, Tsuyoshi Toyono, Keishiro Watanabe, Tatsuaki Kimura, Yoichi Matsuo, Kohei Shiomoto, Ryoichi Kawahara
2017	A*	`conf`	Disaster avoidance control against heavy rainfall. INFOCOM Hiroshi Saito, Hirotada Honda, Ryoichi Kawahara
2017	J	`jnl`	Geometrical Characterization of Offloading through Wireless LANs. IEEE Trans. Mob. Comput. Hiroshi Saito, Ryoichi Kawahara
2017	J	`jnl`	Name Resolution Based on Set of Attribute-Value Pairs of Real-World Information. IEICE Trans. Commun. Ryoichi Kawahara, Hiroshi Saito
2016	—	`conf`	Modeling Urban ITS Communication via Stochastic Geometry Approach. VTC Fall Tatsuaki Kimura, Hiroshi Saito, Hirotada Honda, Ryoichi Kawahara
2015	—	`conf`	Homology-based metaheuristics for cell planning with macroscopic diversity using sector antennas. ICC Yasuhiro Ikeda, Ryoichi Kawahara, Hiroshi Saito
2014	J	`jnl`	An Online Framework for Flow Round Trip Time Measurement. IEICE Trans. Commun. Xinjie Guan, Xili Wan, Ryoichi Kawahara, Hiroshi Saito
2014	—	`conf`	Cell Planning with Macroscopic Diversity: Optimal Cell Deployment and SINR Evaluation under Frequency Scheduling. VTC Spring Yasuhiro Ikeda, Hiroshi Saito, Ryoichi Kawahara
2014	A	`conf`	Mobile QoS tomography using compressed sensing. ITC Ryoichi Kawahara, Yoshihide Tonomura
2014	J	`jnl`	Theoretical Evaluation of Offloading through Wireless LANs. CoRR Hiroshi Saito, Ryoichi Kawahara
2013	—	`conf`	A periodic combined-content distribution mechanism in peer-assisted content delivery networks. Kaleidoscope Naoya Maki, Ryoichi Shinkuma, Tatsuya Mori, Noriaki Kamiyama, Ryoichi Kawahara
2013	A	`conf`	An online framework for flow round trip time measurement. ITC Xinjie Guan, Xili Wan, Ryoichi Kawahara, Hiroshi Saito
2013	B	`conf`	Analysis of content charge by ISPs. IM Noriaki Kamiyama, Ryoichi Kawahara
2013	J	`jnl`	Analyzing Characteristics of TCP Quality Metrics with Respect to Type of Connection through Measured Traffic Data. IEICE Trans. Commun. Yasuhiro Ikeda, Ryoichi Kawahara, Noriaki Kamiyama, Tatsuaki Kimura, Tatsuya Mori
2013	J	`jnl`	Analyzing influence of network topology on designing ISP-operated CDN. Telecommun. Syst. Noriaki Kamiyama, Tatsuya Mori, Ryoichi Kawahara, Shigeaki Harada, Haruhisa Hasegawa
2013	J	`jnl`	Autonomic load balancing of flow monitors. Comput. Networks Noriaki Kamiyama, Tatsuya Mori, Ryoichi Kawahara
2013	J	`jnl`	Effect of Limiting Pre-Distribution and Clustering Users on Multicast Pre-Distribution VoD. IEICE Trans. Commun. Noriaki Kamiyama, Ryoichi Kawahara, Tatsuya Mori, Haruhisa Hasegawa
2013	—	`conf`	Expected traffic reduction by content-oriented incentive in peer-assisted content delivery networks. ICOIN Naoya Maki, Takayuki Nishio, Ryoichi Shinkuma, Tatsuro Takahashi, Tatsuya Mori, Noriaki Kamiyama, Ryoichi Kawahara
2013	J	`jnl`	Mean-variance relationship of the number of flows in traffic aggregation and its application to traffic management. Comput. Networks Ryoichi Kawahara, Tetsuya Takine, Tatsuya Mori, Noriaki Kamiyama, Keisuke Ishibashi
2013	J	`jnl`	Multicast Pre-Distribution VoD System. IEICE Trans. Commun. Noriaki Kamiyama, Ryoichi Kawahara, Tatsuya Mori, Haruhisa Hasegawa
2013	J	`jnl`	Optimally Designing ISP-Operated CDN. IEICE Trans. Commun. Noriaki Kamiyama, Tatsuya Mori, Ryoichi Kawahara, Haruhisa Hasegawa
2013	J	`jnl`	Optimally Identifying Worm-Infected Hosts. IEICE Trans. Commun. Noriaki Kamiyama, Tatsuya Mori, Ryoichi Kawahara, Shigeaki Harada
2013	J	`jnl`	Optimum profit allocation in coalitional VoD service. Comput. Networks Noriaki Kamiyama, Ryoichi Kawahara, Haruhisa Hasegawa
2012	J	`jnl`	Analyzing and Reducing the Impact of Traffic on Large-Scale NAT. IEICE Trans. Commun. Ryoichi Kawahara, Tatsuya Mori, Takeshi Yada, Noriaki Kamiyama
2012	—	`conf`	Autonomic load balancing for flow monitoring. ICC Noriaki Kamiyama, Tatsuya Mori, Ryoichi Kawahara
2012	J	`jnl`	Effects of Sampling and Spatio/Temporal Granularity in Traffic Monitoring on Anomaly Detectability. IEICE Trans. Commun. Keisuke Ishibashi, Ryoichi Kawahara, Tatsuya Mori, Tsuyoshi Kondoh, Shoichiro Asano
2012	J	`jnl`	Traffic Engineering of Peer-Assisted Content Delivery Network with Content-Oriented Incentive Mechanism. IEICE Trans. Inf. Syst. Naoya Maki, Takayuki Nishio, Ryoichi Shinkuma, Tatsuya Mori, Noriaki Kamiyama, Ryoichi Kawahara, Tatsuro Takahashi
2011	J	`jnl`	Detection accuracy of network anomalies using sampled flow statistics. Int. J. Netw. Manag. Ryoichi Kawahara, Keisuke Ishibashi, Tatsuya Mori, Noriaki Kamiyama, Shigeaki Harada, Haruhisa Hasegawa, Shoichiro Asano
2011	—	`conf`	Limiting pre-distribution and clustering users on multicast pre-distribution VoD. Integrated Network Management Noriaki Kamiyama, Ryoichi Kawahara, Tatsuya Mori, Haruhisa Hasegawa
2011	J	`jnl`	Optimally designing caches to reduce P2P traffic. Comput. Commun. Noriaki Kamiyama, Ryoichi Kawahara, Tatsuya Mori, Shigeaki Harada, Haruhisa Hasegawa
2011	J	`jnl`	Parallel video streaming optimizing network throughput. Comput. Commun. Noriaki Kamiyama, Ryoichi Kawahara, Tatsuya Mori, Shigeaki Harada, Haruhisa Hasegawa
2011	—	`conf`	Performance evaluation of peer-assisted content distribution. CCNC Ryoichi Kawahara, Noriaki Kamiyama, Tatsuya Mori, Haruhisa Hasegawa
2011	—	`conf`	Traffic Engineering Using Overlay Network. ICC Ryoichi Kawahara, Shigeaki Harada, Noriaki Kamiyama, Tatsuya Mori, Haruhisa Hasegawa, Akihiro Nakao
2010	—	`conf`	Characterizing Traffic Flows Originating from Large-Scale Video Sharing Services. TMA Tatsuya Mori, Ryoichi Kawahara, Haruhisa Hasegawa, Shinsuke Shimogawa
2010	B	`conf`	Impact of topology on parallel video streaming. NOMS Noriaki Kamiyama, Ryoichi Kawahara, Tatsuya Mori, Shigeaki Harada, Haruhisa Hasegawa
2010	—	`conf`	Optimally Designing Capacity and Location of Caches to Reduce P2P Traffic. ICC Noriaki Kamiyama, Ryoichi Kawahara, Tatsuya Mori, Shigeaki Harada, Haruhisa Hasegawa
2010	B	`conf`	Profit Allocation in Coalitional VoD Service. MASCOTS Noriaki Kamiyama, Ryoichi Kawahara, Haruhisa Hasegawa
2009	B	`conf`	A Method of Constructing QoS Overlay Network and Its Evaluation. GLOBECOM Ryoichi Kawahara, Satoshi Kamei, Noriaki Kamiyama, Haruhisa Hasegawa, Hideaki Yoshino, Eng Keong Lua, Akihiro Nakao
2009	—	`conf`	Adaptive Bandwidth Control to Handle Long-Duration Large Flows. ICC Ryoichi Kawahara, Tatsuya Mori, Noriaki Kamiyama, Shigeaki Harada, Haruhisa Hasegawa
2009	B	`conf`	Improving Deployability of Peer-Assisted CDN Platform with Incentive. GLOBECOM Tatsuya Mori, Noriaki Kamiyama, Shigeaki Harada, Haruhisa Hasegawa, Ryoichi Kawahara
2009	A*	`conf`	On the Quality of Triangle Inequality Violation Aware Routing Overlay Architecture. INFOCOM Ryoichi Kawahara, Eng Keong Lua, Masato Uchida, Satoshi Kamei, Hideaki Yoshino
2008	B	`conf`	A Method of Detecting Network Anomalies in Cyclic Traffic. GLOBECOM Shigeaki Harada, Ryoichi Kawahara, Tatsuya Mori, Noriaki Kamiyama, Haruhisa Hasegawa, Hideaki Yoshino
2008	C	`conf`	Detection of Leaps/sLumps in Traffic Volume of Internet Backbone. APNOMS Yutaka Hirokawa, Kimihiro Yamamoto, Shigeaki Harada, Ryoichi Kawahara
2008	—	`conf`	Extracting Worm-Infected Hosts Using White List. SAINT Noriaki Kamiyama, Tatsuya Mori, Ryoichi Kawahara, Shigeaki Harada, Hideaki Yoshino
2008	J	`jnl`	Finding Cardinality Heavy-Hitters in Massive Traffic Data and Its Application to Anomaly Detection. IEICE Trans. Commun. Keisuke Ishibashi, Tatsuya Mori, Ryoichi Kawahara, Yutaka Hirokawa, Atsushi Kobayashi, Kimihiro Yamamoto, Hitoaki Sakamoto, Shoichiro Asano
2008	B	`conf`	Identifying Anomalous Traffic Sources Using Flow Statistics. GLOBECOM Ryoichi Kawahara, Noriaki Kamiyama, Shigeaki Harada, Haruhisa Hasegawa, Shoichiro Asano
2008	J	`jnl`	Inconsistency of logical and physical topologies for overlay networks and its effect on file transfer delay. Perform. Evaluation Yasuo Tamura, Shoji Kasahara, Yutaka Takahashi, Satoshi Kamei, Ryoichi Kawahara
2008	—	`conf`	Optimum Identification of Worm-Infected Hosts. IPOM Noriaki Kamiyama, Tatsuya Mori, Ryoichi Kawahara, Shigeaki Harada
2008	J	`jnl`	Packet Sampling TCP Flow Rate Estimation and Performance Degradation Detection Method. IEICE Trans. Commun. Ryoichi Kawahara, Tatsuya Mori, Keisuke Ishibashi, Noriaki Kamiyama, Hideaki Yoshino
2007	—	`conf`	2-D Bitmap for Summarizing Inter-Host Communication Patterns. SAINT Workshops Keisuke Ishibashi, Tatsuya Mori, Ryoichi Kawahara, Katsuyasu Toyama, Shunichi Osawa, Shoichiro Asano
2007	—	`conf`	A Study on Detecting Network Anomalies Using Sampled Flow Statistics. SAINT Workshops Ryoichi Kawahara, Tatsuya Mori, Noriaki Kamiyama, Shigeaki Harada, Shoichiro Asano
2007	B	`conf`	Detection Accuracy of Network Anomalies Using Sampled Flow Statistics. GLOBECOM Ryoichi Kawahara, Keisuke Ishibashi, Tatsuya Mori, Noriaki Kamiyama, Shigeaki Harada, Shoichiro Asano
2007	B	`conf`	Efficient Timeout Checking Mechanism for Traffic Control. ICCCN Noriaki Kamiyama, Tatsuya Mori, Ryoichi Kawahara, Eng Keong Lua
2007	J	`jnl`	Identifying Heavy-Hitter Flows from Sampled Flow Statistics. IEICE Trans. Commun. Tatsuya Mori, Tetsuya Takine, Jianping Pan, Ryoichi Kawahara, Masato Uchida, Shigeki Goto
2007	—	`conf`	Inferring Original Traffic Pattern from Sampled Flow Statistics. SAINT Workshops Tatsuya Mori, Ryoichi Kawahara, Noriaki Kamiyama, Shigeaki Harada
2007	A*	`conf`	Simple and Adaptive Identification of Superspreaders by Flow Sampling. INFOCOM Noriaki Kamiyama, Tatsuya Mori, Ryoichi Kawahara
2006	J	`jnl`	Detection of TCP Performance Degradation Using Link Utilization Statistics. IEICE Trans. Commun. Keisuke Ishibashi, Ryoichi Kawahara, Takuya Asaka, Masaki Aida, Satoshi Ono, Shoichiro Asano
2006	B	`conf`	Estimating Flow Rate from Sampled Packet Streams for Detection of Performance Degradation at TCP Flow Level. GLOBECOM Ryoichi Kawahara, Tatsuya Mori, Keisuke Ishibashi, Noriaki Kamiyama, Takeo Abe
2006	—	`conf`	Estimating Top N Hosts in Cardinality Using Small Memory Resources. ICDE Workshops Keisuke Ishibashi, Tatsuya Mori, Ryoichi Kawahara, Yutaka Hirokawa, Atsushi Kobayashi, Kimihiro Yamamoto, Hitoaki Sakamoto
2006	—	`conf`	Performance Evaluation of QoS-Aware Routing in Overlay Network. ICOIN Masato Uchida, Satoshi Kamei, Ryoichi Kawahara
2006	—	`conf`	QoS control to handle long-duration large flows and its performance evaluation. ICC Ryoichi Kawahara, Tatsuya Mori, Takeo Abe
2006	J	`jnl`	QoS-Aware Overlay Routing with Limited Number of Alternative Route Candidates and Its Evaluation. IEICE Trans. Commun. Masato Uchida, Satoshi Kamei, Ryoichi Kawahara, Takeo Abe
2005	J	`jnl`	A Method of Bandwidth Dimensioning and Management Using Flow Statistics. IEICE Trans. Commun. Ryoichi Kawahara, Keisuke Ishibashi, Takuya Asaka, Shuichi Sumita, Takeo Abe
2005	J	`jnl`	Method of Bandwidth Dimensioning and Management for Aggregated TCP Flows with Heterogeneous Access Links. IEICE Trans. Commun. Ryoichi Kawahara, Keisuke Ishibashi, Tatsuya Mori, Toshihisa Ozawa, Takeo Abe
2004	B	`conf`	A method of bandwidth dimensioning and management using flow statistics [IP networks]. GLOBECOM Ryoichi Kawahara, Keisuke Ishibashi, Takuya Asaka, Shuichi Sumita, Takeo Abe
2004	B	`conf`	Detection of TCP performance degradation using link utilization statistics. GLOBECOM Keisuke Ishibashi, Ryoichi Kawahara, Aida Takuya, Asaka Masaki
2004	A	`conf`	Identifying elephant flows through periodically sampled packets. Internet Measurement Conference Tatsuya Mori, Masato Uchida, Ryoichi Kawahara, Jianping Pan, Shigeki Goto
2004	—	`conf`	On the Characteristics of Internet Traffic Variability: Spikes and Elephants. SAINT Tatsuya Mori, Ryoichi Kawahara, Shozo Naito, Shigeki Goto
2004	J	`jnl`	On the Characteristics of Internet Traffic Variability: Spikes and Elephants. IEICE Trans. Inf. Syst. Tatsuya Mori, Ryoichi Kawahara, Shozo Naito, Shigeki Goto
2003	B	`conf`	A method of IP traffic management using TCP flow statistics. GLOBECOM Ryoichi Kawahara, Keisuke Ishibashi, Takuya Asaka, Katsunori Ori
2002	J	`jnl`	Analysis of Non-Gaussian Nature of Network Traffic CoRR Tatsuya Mori, Ryoichi Kawahara, Shozo Naito
2002	J	`jnl`	Analysis of Non-Gaussian Nature of Network Traffic and its Implication on Network Performance CoRR Tatsuya Mori, Ryoichi Kawahara, Shozo Naito
2002	—	`conf`	Dynamically weighted queueing for fair bandwidth allocation and its performance analysis. ICC Ryoichi Kawahara, Naohisa Komatsu
2002	B	`conf`	Evaluation of congestion control of the PDC mobile packet data communication system. GLOBECOM Keiko Yoshihara, Toshihiro Suzuki, Akira Miura, Ryoichi Kawahara
2001	J	`jnl`	Traffic measurement and analysis in an ATM-based internet backbone. Comput. Commun. Ryoichi Kawahara, Keisuke Ishibashi, Toshiyuki Hirano, Hiroshi Saito, Hisaki Ohara, Daisuke Satoh, Shoichiro Asano, Jun Matsukata
1998	J	`jnl`	Characteristics of ABR explicit rate control algorithms in WAN environments and an ABR control algorithm suitable for public networks. Int. J. Commun. Syst. Ryoichi Kawahara, Hiroshi Saito, Masatoshi Kawarasaki
1997	—	`conf`	Characteristics of ABR Explicit Rate Control Algorithms in WAN Environment. ICC (3) Ryoichi Kawahara, Arata Koike, Mika Ishizuka, Masahito Koshiishi, Masatoshi Kawarasaki