Takahiro HIRAYAMA


Sparse Regression Model-Based Relearning Architecture for Shortening Learning Time in Traffic Prediction
Takahiro HIRAYAMA Takaya MIYAZAWA Masahiro JIBIKI Ved P. KAFLE 
Publication:   
Publication Date: 2021/05/01
Vol. E104-D  No. 5  pp. 606-616
Type of Manuscript:  Special Section PAPER (Special Section on the Architectures, Protocols, and Applications for the Future Internet)
Category: 
Keyword: 
network function virtualization (NFV)service function chaining (SFC)machine learningdynamic resource arbitration
 Summary | Full Text:PDF(1.8MB)

Designing Distributed SDN C-Plane Considering Large-Scale Disruption and Restoration
Takahiro HIRAYAMA Masahiro JIBIKI Hiroaki HARAI 
Publication:   
Publication Date: 2019/03/01
Vol. E102-B  No. 3  pp. 452-463
Type of Manuscript:  Special Section PAPER (Special Section on Network Virtualization and Network Softwarization for Diverse 5G Services)
Category: 
Keyword: 
software-defined networking (SDN)distributed SDN controlfailure recoverycontrol plane
 Summary | Full Text:PDF(2.1MB)

Dynamics of Feedback-Induced Packet Delay in ISP Router-Level Topologies
Takahiro HIRAYAMA Shin'ichi ARAKAWA Ken-ichi ARAI Masayuki MURATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/09/01
Vol. E95-B  No. 9  pp. 2785-2793
Type of Manuscript:  PAPER
Category: Fundamental Theories for Communications
Keyword: 
power-law degree distributionISP router-level topologytraffic dynamicsTCP
 Summary | Full Text:PDF(1.8MB)