Koji EGUCHI


Video Data Modeling Using Sequential Correspondence Hierarchical Dirichlet Processes
Jianfei XUE Koji EGUCHI 
Publication:   
Publication Date: 2017/01/01
Vol. E100-D  No. 1  pp. 33-41
Type of Manuscript:  Special Section PAPER (Special Section on Enriched Multimedia —New Technology Trends in Creation, Utilization and Protection of Multimedia Information—)
Category: 
Keyword: 
bayesian nonparametric methodsmultimedia machine learninghierarchical Dirichlet processestopic models
 Summary | Full Text:PDF(1.2MB)

Multimedia Topic Models Considering Burstiness of Local Features
Yang XIE Koji EGUCHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/04/01
Vol. E97-D  No. 4  pp. 714-720
Type of Manuscript:  Special Section PAPER (Special Section on Data Engineering and Information Management)
Category: 
Keyword: 
topic modelsmultimediaword burstinessDirichlet compound multinomials
 Summary | Full Text:PDF(737.7KB)

Online Inference of Mixed Membership Stochastic Blockmodels for Network Data Streams
Tomoki KOBAYASHI Koji EGUCHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/04/01
Vol. E97-D  No. 4  pp. 752-761
Type of Manuscript:  Special Section PAPER (Special Section on Data Engineering and Information Management)
Category: 
Keyword: 
mixed membership stochastic blockmodelsparticle filtersdynamic networksonline inference
 Summary | Full Text:PDF(1.5MB)

Hybrid Parallel Inference for Hierarchical Dirichlet Processes
Tsukasa OMOTO Koji EGUCHI Shotaro TORA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/04/01
Vol. E97-D  No. 4  pp. 815-820
Type of Manuscript:  Special Section LETTER (Special Section on Data Engineering and Information Management)
Category: 
Keyword: 
hierarchical dirichlet processtopic modelsparallelization
 Summary | Full Text:PDF(1.4MB)

MPI/OpenMP Hybrid Parallel Inference Methods for Latent Dirichlet Allocation – Approximation and Evaluation
Shotaro TORA Koji EGUCHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2013/05/01
Vol. E96-D  No. 5  pp. 1006-1015
Type of Manuscript:  Special Section PAPER (Special Section on Data Engineering and Information Management)
Category: Advanced Search
Keyword: 
probabilistic topic modelsLatent Dirichlet allocationGibbs samplingMPI/OpenMP hybrid parallelization
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Entity Network Prediction Using Multitype Topic Models
Hitohiro SHIOZAKI Koji EGUCHI Takenao OHKAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/11/01
Vol. E91-D  No. 11  pp. 2589-2598
Type of Manuscript:  Special Section PAPER (Special Section on Knowledge, Information and Creativity Support System)
Category: Knowledge Discovery and Data Mining
Keyword: 
statistical topic modelsmultitype topic modelslink predictionentity networks
 Summary | Full Text:PDF(518.1KB) | (Errata[Uploaded on December 1,2008])

Evaluation Methods for Web Retrieval Tasks Considering Hyperlink Structure
Koji EGUCHI Keizo OYAMA Emi ISHIDA Noriko KANDO Kazuko KURIYAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/09/01
Vol. E86-D  No. 9  pp. 1804-1813
Type of Manuscript:  Special Section PAPER (Special Issue on Text Processing for Information Access)
Category: 
Keyword: 
evaluation methodstest collectionsWeb information retrieval
 Summary | Full Text:PDF(357.5KB)