Takashi WASHIO


Fast and Accurate PSD Matrix Estimation by Row Reduction
Hiroshi KUWAJIMA Takashi WASHIO Ee-Peng LIM 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2012/11/01
Vol. E95-D  No. 11  pp. 2599-2612
Type of Manuscript:  PAPER
Category: Fundamentals of Information Systems
Keyword: 
similarityPositive Semi-Definite (PSD) matrixPositive Semi-Definite (PSD) Estimationrow reductionincomplete Cholesky decomposition
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Efficient Graph Sequence Mining Using Reverse Search
Akihiro INOKUCHI Hiroaki IKUTA Takashi WASHIO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2012/07/01
Vol. E95-D  No. 7  pp. 1947-1958
Type of Manuscript:  PAPER
Category: Artificial Intelligence, Data Mining
Keyword: 
frequent patterngraph sequencereverse search
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FRISSMiner: Mining Frequent Graph Sequence Patterns Induced by Vertices
Akihiro INOKUCHI Takashi WASHIO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2012/06/01
Vol. E95-D  No. 6  pp. 1590-1602
Type of Manuscript:  PAPER
Category: Artificial Intelligence, Data Mining
Keyword: 
frequent pattern mininggraph sequenceinduced subgraph subsequence
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GTRACE: Mining Frequent Subsequences from Graph Sequences
Akihiro INOKUCHI Takashi WASHIO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/10/01
Vol. E93-D  No. 10  pp. 2792-2804
Type of Manuscript:  PAPER
Category: Artificial Intelligence, Data Mining
Keyword: 
frequent pattern mininggraph sequenceunion graph
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Density-Based Spam Detector
Kenichi YOSHIDA Fuminori ADACHI Takashi WASHIO Hiroshi MOTODA Teruaki HOMMA Akihiro NAKASHIMA Hiromitsu FUJIKAWA Katsuyuki YAMAZAKI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2004/12/01
Vol. E87-D  No. 12  pp. 2678-2688
Type of Manuscript:  Special Section PAPER (Special Section on New Technologies and their Applications of the Internet)
Category: Internet Systems
Keyword: 
spamunsupervised learningdocument space densitydirect-mapped cache
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Discovery of Laws
Hiroshi MOTODA Takashi WASHIO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2000/01/25
Vol. E83-D  No. 1  pp. 44-51
Type of Manuscript:  INVITED PAPER (Special Issue on Surveys on Discovery Science)
Category: 
Keyword: 
law discoveryequation findingequation fittingsystem identificationmodelingempirical discoveryscientific discovery
 Summary | Full Text:PDF(358.4KB)