KOJI EGUCHI

Last Updated :2025/04/03

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Professor
E-mail
kxeguchihiroshima-u.ac.jp

Basic Information

Major Professional Backgrounds

  • 1999/04/01, 2000/03/31, National Center for Science Information Systems, Research and Development Department, Research Associate
  • 2000/04/01, 2006/03/31, National Institute of Informatics, Information and Society Research Division, Assistant Professor
  • 2006/04/01, 2006/10/31, National Institute of Informatics, Digital Content and Media Sciences Research Division, Assistant Professor
  • 2006/11/01, 2007/03/31, Kobe University, Graduate School of Science and Technology, Associate Professor
  • 2007/04/01, 2010/03/31, Kobe University, Graduate School of Engineering, Associate Professor
  • 2010/04/01, 2019/03/31, Kobe University, Graduate School of System Informatics, Associate Professor
  • 2019/04/01, 2020/03/31, Hiroshima University, School of Informatics and Data Science, Professor

Academic Degrees

  • Ph.D., Kansai University

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, 3Term, Computer Programming
  2. 2025, Undergraduate Education, Intensive, Basics of AI
  3. 2025, Undergraduate Education, 2Term, Natural Language Processing
  4. 2025, Undergraduate Education, 1Term, Intelligence Science Seminar I
  5. 2025, Undergraduate Education, 2Term, Intelligence Science Seminar II
  6. 2025, Undergraduate Education, Second Semester, Graduation Thesis
  7. 2025, Graduate Education (Master's Program) , 1Term, Special Exercises on Informatics and Data Science A
  8. 2025, Graduate Education (Master's Program) , 2Term, Special Exercises on Informatics and Data Science A
  9. 2025, Graduate Education (Master's Program) , 3Term, Special Exercises on Informatics and Data Science B
  10. 2025, Graduate Education (Master's Program) , 4Term, Special Exercises on Informatics and Data Science B
  11. 2025, Graduate Education (Master's Program) , Academic Year, Special Study on Informatics and Data Science
  12. 2025, Graduate Education (Master's Program) , 3Term, Advanced Natural Language Processing
  13. 2025, Graduate Education (Doctoral Program) , Academic Year, Special Study on Informatics and Data Science
  14. 2025, Graduate Education (Doctoral Program) , Academic Year, Special Study on Informatics and Data Science

Research Activities

Academic Papers

  1. Generalized Knowledge Distillation for Topic Models, PRICAI 2023: Trends in Artificial Intelligence, 14326, 355-361, 2024
    Link to Paper Search Results by DOI
  2. A supervised topic embedding model and its application, PLOS ONE, 17(11), 20221104
    Link to Paper Search Results by DOI
  3. Topic Embedding Regression Model and its Application to Financial Texts, Proceedings of the 3rd Workshop on Financial Technology and Natural Language Processing, 15-21, 20210821
  4. Forecasting Corporate Financial Time Series using Multi-phase Attention Recurrent Neural Networks, Proceedings of the Workshops of the EDBT/ICDT 2020 Joint Conference, 20200330
  5. Hierarchical Topic Models for Expanding Category Hierarchies, 2019 IEEE International Conference on Big Data and Smart Computing, BigComp 2019 - Proceedings, 20190401
  6. Supervised Nonparametric Multimodal Topic Models for Multi-class Video Classification, ITE Transactions on Media Technology and Applications, 7(2), 80-91, 20190401
  7. Particle filter inference based on activities for overlapping community models, 26th International World Wide Web Conference 2017, WWW 2017 Companion, 1499-1504, 20190101
  8. Supervised nonparametric multimodal topic modeling methods for multi-class video classification, ICMR 2018 - Proceedings of the 2018 ACM International Conference on Multimedia Retrieval, 370-378, 20180605
  9. Sequential Bayesian Nonparametric Multimodal Topic Models for Video Data Analysis, IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, E101D(4), 1079-1087, 2018
  10. Predicting Users' Search Behavior Using Stochastic Multi-mode Network Models, IEEE International Conference on Data Mining Workshops, ICDMW, 2017-November, 150-155, 20171215
  11. A Bayesian nonparametric multimodal data modeling framework for video emotion recognition, Proceedings - IEEE International Conference on Multimedia and Expo, 601-606, 20170828
  12. Time dependent analysis of financial networks using supervised latent feature relational models, Proceedings - 2017 IEEE International Conference on Big Data, Big Data 2017, 2018-January, 3086-3090, 20170701
  13. Video Data Modeling Using Sequential Correspondence Hierarchical Dirichlet Processes, IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, E100D(1), 33-41, 2017
  14. Relation Prediction in Multilingual Data Based on Multimodal Relational Topic Models, IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, E100D(4), 741-749, 2017
  15. Cross-lingual link prediction using multimodal relational topic models, 2016 IEEE/ACIS 15th International Conference on Computer and Information Science, ICIS 2016 - Proceedings, 20160823
  16. Bayesian nonparametric inference of latent topic hierarchies for multimodal data, Proceedings - 3rd IAPR Asian Conference on Pattern Recognition, ACPR 2015, 236-240, 20160607
  17. Sequential correspondence hierarchical dirichlet processes for video data analysis, ICMR 2016 - Proceedings of the 2016 ACM International Conference on Multimedia Retrieval, 229-233, 20160606
  18. Bayesian Non-parametric Inference of Multimodal Topic Hierarchies, Journal of Information Processing, 57(3), 20160315
  19. Multimedia Topic Models Considering Burstiness of Local Features, IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, E97D(4), 714-720, 2014
  20. Online Inference of Mixed Membership Stochastic Blockmodels for Network Data Streams, IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, E97D(4), 752-761, 2014
  21. Hybrid Parallel Inference for Hierarchical Dirichlet Processes, IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, E97D(4), 815-820, 2014
  22. MPI/OpenMP Hybrid Parallel Inference Methods for Latent Dirichlet Allocation - Approximation and Evaluation, IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, E96D(5), 1006-1015, 2013
  23. Symmetric Correspondence topic models for multilingual text analysis, Advances in Neural Information Processing Systems, 2, 1286-1294, 20121201
  24. MPI/OpenMP hybrid parallel inference for Latent Dirichlet Allocation, Proceedings of the 3rd Workshop on Large Scale Data Mining: Theory and Applications, LDMTA 2011 - Held in Conjunction with ACM SIGKDD 2011, 20110907
  25. Link prediction using probabilistic group models of network structure, Proceedings of the ACM Symposium on Applied Computing, 1115-1116, 20100723
  26. Locally contextualized smoothing of language models for sentiment sentence retrieval, International Conference on Information and Knowledge Management, Proceedings, 73-79, 20091201
  27. Query structuring and expansion with two-stage term dependence for Japanese web retrieval, INFORMATION RETRIEVAL, 12(3), 251-274, 2009
  28. Improving Document Representation for Story Link Detection by Modeling Term Topicality, 1(3), 11-19, 20081226
  29. Predicting protein-protein relationships from literature using collapsed variational latent dirichlet allocation, International Conference on Information and Knowledge Management, Proceedings, 77-80, 20081201
  30. Automatic query structuring from sentences for Japanese web retrieval, International Conference on Information and Knowledge Management, Proceedings, 55-62, 20081201
  31. Entity ranking from annotated text collections using multitype topic models, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 4862 LNCS, 279-292, 20080922
  32. Entity network prediction using multitype topic models, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 5012 LNAI, 705-714, 20080609
  33. Entity Network Prediction Using Multitype Topic Models, IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, E91D(11), 2589-2598, 2008
  34. Use of topicality and information measures to improve document representation for story link detection, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 4425 LNCS, 393-404, 20071220
  35. Opinion retrieval experiments using generative models: Experiments for the TREC 2007 Blog Track, NIST Special Publication, 20071201
  36. Interactive clustering of text collections according to a user-specified criterion, IJCAI International Joint Conference on Artificial Intelligence, 684-689, 20071201
  37. Boosting relevance model performance with query term dependence, International Conference on Information and Knowledge Management, Proceedings, 792-793, 20061201
  38. Sentiment retrieval using generative models, COLING/ACL 2006 - EMNLP 2006: 2006 Conference on Empirical Methods in Natural Language Processing, Proceedings of the Conference, 345-354, 20061201
  39. Query structuring with two-stage term dependence in the Japanese language, INFORMATION RETRIEVAL TECHNOLOGY, PROCEEDINGS, 4182, 522-529, 2006
  40. Analysis of multi-document viewpoint summarization using multi-dimensional genres, AAAI Spring Symposium - Technical Report, SS-04-07, 142-145, 20051201
  41. Analysis of topics and relevant documents for navigational retrieval on the Web, Proceedings - International Workshop on Challenges in Web Information Retrieval and Integration, WIRI'05, 2005, 157-162, 20051201
  42. The test collection for navigational retrieval on WWW data - Design and characteristics, Progress in Informatics, 59-73, 20050101
  43. Compact summarization for mobile phones, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2954, 172-186, 20041201
  44. Overview of the web retrieval task at the third NTCIR Workshop, NII Technical Reports, 20031201
  45. The Web Retrieval Task and its evaluation in the Third NTCIR Workshop, SIGIR Forum (ACM Special Interest Group on Information Retrieval), 375-376, 20021201
  46. Sensitivity of IR systems evaluation to topic difficulty, Proceedings of the 3rd International Conference on Language Resources and Evaluation, LREC 2002, 585-589, 20020101
  47. Pooling for a large-scale test collection: An analysis of the search results from the first NTCIR Workshop, Information Retrieval, 5(1), 41-59, 20020101
  48. Automatically Editing Book Reviews on the Web, Proceedings of the Third International Workshop on Web Information and Data Management (WIDM), 76-81, 20011201
  49. Adaptive cluster-based browsing using incrementally expanded queries and its effects, Proceedings of the 22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 1999, 265-266, 19990801
  50. Adaptive Query Expansion Based on Clustering Search Results, Transactions of Information Processing Society of Japan, 40(5), 2439-2449, 19990515
  51. Adaptive and incremental query expansion for cluster-based browsing, Proceedings - 6th International Conference on Database Systems for Advanced Applications, DASFAA 1999, 25-34, 19990101