Keisuke ISHIBASHI


Network Event Extraction from Log Data with Nonnegative Tensor Factorization
Tatsuaki KIMURA Keisuke ISHIBASHI Tatsuya MORI Hiroshi SAWADA Tsuyoshi TOYONO Ken NISHIMATSU Akio WATANABE Akihiro SHIMODA Kohei SHIOMOTO 
Publication:   
Publication Date: 2017/10/01
Vol. E100-B  No. 10  pp. 1865-1878
Type of Manuscript:  PAPER
Category: Network Management/Operation
Keyword: 
network managementsyslognonnegative tensor factorization (NTF)
 Summary | Full Text:PDF(2.6MB)

Identifying DNS Anomalous User by Using Hierarchical Aggregate Entropy
Keisuke ISHIBASHI Kazumichi SATO 
Publication:   
Publication Date: 2017/01/01
Vol. E100-B  No. 1  pp. 140-147
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
DNSentropyheavy-hitter
 Summary | Full Text:PDF(952.8KB)

Effective Flow Aggregation for Traffic Engineering
Noriaki KAMIYAMA Yousuke TAKAHASHI Keisuke ISHIBASHI Kohei SHIOMOTO Tatsuya OTOSHI Yuichi OHSITA Masayuki MURATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/10/01
Vol. E98-B  No. 10  pp. 2049-2059
Type of Manuscript:  PAPER
Category: Network
Keyword: 
traffic engineeringflowaggregation
 Summary | Full Text:PDF(1.8MB)

Traffic Engineering Based on Model Predictive Control
Tatsuya OTOSHI Yuichi OHSITA Masayuki MURATA Yousuke TAKAHASHI Noriaki KAMIYAMA Keisuke ISHIBASHI Kohei SHIOMOTO Tomoaki HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/06/01
Vol. E98-B  No. 6  pp. 996-1007
Type of Manuscript:  PAPER
Category: Network
Keyword: 
model predictive controltraffic engineeringtraffic predictionmulti-path routing
 Summary | Full Text:PDF(2.1MB)

Extending Black Domain Name List by Using Co-occurrence Relation between DNS Queries
Kazumichi SATO Keisuke ISHIBASHI Tsuyoshi TOYONO Haruhisa HASEGAWA Hideaki YOSHINO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/03/01
Vol. E95-B  No. 3  pp. 794-802
Type of Manuscript:  PAPER
Category: Fundamental Theories for Communications
Keyword: 
 Summary | Full Text:PDF(741.2KB)

Effects of Sampling and Spatio/Temporal Granularity in Traffic Monitoring on Anomaly Detectability
Keisuke ISHIBASHI Ryoichi KAWAHARA Tatsuya MORI Tsuyoshi KONDOH Shoichiro ASANO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/02/01
Vol. E95-B  No. 2  pp. 466-476
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
anomaly detectionsamplingspatio/temporal granularityhurst parameter
 Summary | Full Text:PDF(1.8MB)

Traffic Monitoring System Based on Correlation between BGP Messages and Traffic Data
Atsushi KOBAYASHI Shingo KASHIMA Hiroshi KURAKAMI Keisuke ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/09/01
Vol. E94-B  No. 9  pp. 2532-2542
Type of Manuscript:  PAPER
Category: Network Management/Operation
Keyword: 
BGPNetFlowsFlowtraffic shift
 Summary | Full Text:PDF(3.5MB)

FOREWORD
Keisuke ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/08/01
Vol. E94-B  No. 8  pp. 2189-2189
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(93.6KB)

VoIP Quality Measurement System Using Flow Mediation for Large-Scale IP Networks
Atsushi KOBAYASHI Keisuke ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/07/01
Vol. E94-B  No. 7  pp. 1973-1981
Type of Manuscript:  PAPER
Category: Network Management/Operation
Keyword: 
IPFIXPSAMPsFlowVoIPSIP
 Summary | Full Text:PDF(3.2MB)

Finding Cardinality Heavy-Hitters in Massive Traffic Data and Its Application to Anomaly Detection
Keisuke ISHIBASHI Tatsuya MORI Ryoichi KAWAHARA Yutaka HIROKAWA Atsushi KOBAYASHI Kimihiro YAMAMOTO Hitoaki SAKAMOTO Shoichiro ASANO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/05/01
Vol. E91-B  No. 5  pp. 1331-1339
Type of Manuscript:  Special Section PAPER (Special Section on Communication Quality)
Category: Measurement Methodology for Network Quality Such as IP, TCP and Routing
Keyword: 
cardinalityanomaly detectiondata stream
 Summary | Full Text:PDF(1.5MB)

Packet Sampling TCP Flow Rate Estimation and Performance Degradation Detection Method
Ryoichi KAWAHARA Tatsuya MORI Keisuke ISHIBASHI Noriaki KAMIYAMA Hideaki YOSHINO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/05/01
Vol. E91-B  No. 5  pp. 1309-1319
Type of Manuscript:  Special Section PAPER (Special Section on Communication Quality)
Category: Measurement Methodology for Network Quality Such as IP, TCP and Routing
Keyword: 
packet samplingTCP performanceflow measurement
 Summary | Full Text:PDF(1.9MB)

Detection of TCP Performance Degradation Using Link Utilization Statistics
Keisuke ISHIBASHI Ryoichi KAWAHARA Takuya ASAKA Masaki AIDA Satoshi ONO Shoichiro ASANO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/01/01
Vol. E89-B  No. 1  pp. 47-56
Type of Manuscript:  PAPER
Category: Network
Keyword: 
TCPperformancelink utilizationmeasurement
 Summary | Full Text:PDF(616.5KB)

Method of Bandwidth Dimensioning and Management for Aggregated TCP Flows with Heterogeneous Access Links
Ryoichi KAWAHARA Keisuke ISHIBASHI Tatsuya MORI Toshihisa OZAWA Takeo ABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/12/01
Vol. E88-B  No. 12  pp. 4605-4615
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
TCP performanceprocessor-sharing modelheterogeneous access linksbandwidth dimensioning and management
 Summary | Full Text:PDF(1.3MB)

A Method of Bandwidth Dimensioning and Management Using Flow Statistics
Ryoichi KAWAHARA Keisuke ISHIBASHI Takuya ASAKA Shuichi SUMITA Takeo ABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/02/01
Vol. E88-B  No. 2  pp. 643-653
Type of Manuscript:  PAPER
Category: Network Management/Operation
Keyword: 
TCP performancebandwidth dimensioning and managementnumber of active flows
 Summary | Full Text:PDF(888KB)

Structures of Human Relations and User-Dynamics Revealed by Traffic Data
Masaki AIDA Keisuke ISHIBASHI Hiroyoshi MIWA Chisa TAKANO Shin-ichi KURIBAYASHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2004/06/01
Vol. E87-D  No. 6  pp. 1454-1460
Type of Manuscript:  Special Section PAPER (Special Section on Human Communication I)
Category: 
Keyword: 
i-modetrafficscale-free networkhuman relationsZipf's law
 Summary | Full Text:PDF(342.3KB)

Capacity Dimensioning of VPN Access Links for Elastic Traffic in the Hose Model
Keisuke ISHIBASHI Mika ISHIZUKA Masaki AIDA Shin-ichi KURIBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/01/01
Vol. E87-B  No. 1  pp. 132-141
Type of Manuscript:  PAPER
Category: Network
Keyword: 
VPNhose modelmax-min fair sharing
 Summary | Full Text:PDF(491.5KB)

Proposal and Evaluation of Method to Estimate Packet Loss-Rate Using Correlation of Packet Delay and Loss
Keisuke ISHIBASHI Masaki AIDA Shin-ichi KURIBAYASHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/11/01
Vol. E86-D  No. 11  pp. 2371-2379
Type of Manuscript:  Special Section PAPER (Special Issue on New Technologies in the Internet and their Applications)
Category: 
Keyword: 
packet loss ratetransmission delaychange of measureQoS
 Summary | Full Text:PDF(358.7KB)

A Method of IP Traffic Management Using the Relationship between TCP Flow Behavior and Link Utilization
Ryoichi KAWAHARA Keisuke ISHIBASHI Takuya ASAKA Katsunori ORI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/11/01
Vol. E86-B  No. 11  pp. 3244-3256
Type of Manuscript:  PAPER
Category: Network Management/Operation
Keyword: 
TCP performanceIPtraffic managementnumber of active flows
 Summary | Full Text:PDF(1.5MB)