Toshiyuki AMAGASA


A Scheme for Fast k-Concealment Anonymization
Ryosuke KOYANAGI Ryo FURUKAWA Tsubasa TAKAHASHI Takuya MORI Toshiyuki AMAGASA Hiroyuki KITAGAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/04/01
Vol. E99-D  No. 4  pp. 1000-1009
Type of Manuscript:  Special Section PAPER (Special Section on Data Engineering and Information Management)
Category: 
Keyword: 
k-concealmentprivacydata publishing
 Summary | Full Text:PDF(1.4MB)

FOREWORD
Toshiyuki AMAGASA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/04/01
Vol. E99-D  No. 4  pp. 895-895
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(58.2KB)

Probabilistic Frequent Itemset Mining on a GPU Cluster
Yusuke KOZAWA Toshiyuki AMAGASA Hiroyuki KITAGAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/04/01
Vol. E97-D  No. 4  pp. 779-789
Type of Manuscript:  Special Section PAPER (Special Section on Data Engineering and Information Management)
Category: 
Keyword: 
GPUuncertain databasesprobabilistic frequent itemsets
 Summary | Full Text:PDF(1.4MB)

MV-OPES: Multivalued-Order Preserving Encryption Scheme: A Novel Scheme for Encrypting Integer Value to Many Different Values
Hasan KADHEM Toshiyuki AMAGASA Hiroyuki KITAGAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/09/01
Vol. E93-D  No. 9  pp. 2520-2533
Type of Manuscript:  PAPER
Category: Data Engineering, Web Information Systems
Keyword: 
encryptionorder-preservingdatabase outsourcingstatistical attack
 Summary | Full Text:PDF(850.9KB)

An Implementation of Interval Based Conceptual Model for Temporal Data
Toshiyuki AMAGASA Masayoshi ARITSUGI Yoshinari KANAMORI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1999/01/25
Vol. E82-D  No. 1  pp. 136-146
Type of Manuscript:  Special Section PAPER (Special Issue on New Generation Database Technologies)
Category: Spatial and Temporal Databases
Keyword: 
temporal databasetime intervaltime interval classtemporal querytime index
 Summary | Full Text:PDF(322.5KB)

Interval-Based Modeling for Temporal Representation and Operations
Toshiyuki AMAGASA Masayoshi ARITSUGI Yoshinari KANAMORI Yoshifumi MASUNAGA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1998/01/25
Vol. E81-D  No. 1  pp. 47-55
Type of Manuscript:  PAPER
Category: Databases
Keyword: 
time-interval data modelcomposite time intervalsnull time intervalstemporal operations
 Summary | Full Text:PDF(714.4KB)