Ryosuke KUBOTA

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Ryosuke KUBOTA was born in 1977. He received the B.E., the M.E. and the Ph.D. degrees from Kyushu Institute of Technology (KIT), Japan in 2000, 2002 and 2006, respectively. He was a research fellow of Knowledge Cluster Initiative, "Yamaguchi/Ube Medical Innovation Cluster" granted by Japan Ministry of Education, Culture, Sports, Science and Technology (MEXT) at Yamaguchi University, Japan since 2006.

He is currently a professor of the Department of Intelligent Systems Engineering at Ube National College of Technology. His current research interest lies on neuro-computing, machine learning, evolutional computing, brain-like information processing, pattern classification, and their applications for medical image/signal processing.

He is a member of

Papers

Refereed Papers in Transactions and Journals
  1. S. Ishikawa, R. Kubota, and K. Horio,
    "Effective Hierarchical Optimization by a Hierarchical Multi-space Competitive Genetic Algorithm for the Flexible Job-shop Scheduling Problem,"
    Expert Systems with Applications, Vol.42, No.24, pp.9434-9440, Aug., 2015.
  2. Y. Ueda, K. Horio and R. Kubota,
    "A Modified Real-Coded Genetic Algorithm Considering with Fitness-based Variability,"
    International Journal of Innovative Computing, Information and Control (IJICIC), Vol.10, No.4, (accepted), Aug., 2014.
  3. R. Kubota and H. Tamukoh,
    "A Particle Swarm Optimization Using Combined Information on Personal Best Positions,"
    Innovative Computing, Information and Control Express Letters (ICIC-EL), Vol.8, No.8, (accepted), Aug., 2014.
  4. S. Ishikawa, H. Misawa, R. Kubota, T. Tokiwa, K. Horio and T. Yamakawa,
    "Multi-space Competitive DGA for Model Selection and Its Application to Localization of Multiple Signal Sources,"
    Journal of Advanced Computational Intelligence and Intelligent Informatics (JACIII), Vol.15, No.9, pp.1320-1328, Nov., 2011.
  5. R. Kubota and N. Suetake,
    "Random-Valued Impulse Noise Removal Based on Component-Wise Noise Detector with Auto-Tuning Function and Vector Median Interpolation,"
    Journal of the Franklin Institute, Vol.348, No.9, pp.2523-2538, Nov. (Available online Aug.) 2011.
  6. N. Suetake, R. Kubota and E. Uchino,
    "Random-Valued Impulse Noise Detection Considering Color Distance and Correlation among RGB Components,"
    International Journal of Innovative Computing, Information and Control (IJICIC), Vol.7, No.7(A), pp.3799-3809, July 2011.
  7. R. Kubota and N. Suetake,
    "Distribution Distance-based Threshold Auto-tuning Method for Switching Median Filter,"
    IEICE Electronics Express (ELEX), Vol.7, No.17, pp.1310-1316, Sep. 2010.
  8. E. Uchino, N. Suetake, T. Koga, R. Kubota, S. Ichiyama, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “Fuzzy Inference-based Plaque Boundary Extraction Using Image Separability for Intravascular Ultrasound Image of Coronary Artery,”
    Electronics Letters, Vol.45, No.9, pp.451-453, Apr. 2009.
  9. R. Kubota, M. Kunihiro, N. Suetake, E. Uchino, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “An Intravascular Ultrasound-based Tissue Characterization Using Shift-invariant Features Extracted by Adaptive Subspace SOM,”
    International Jornal of Biology and Biomedical Engineering, Vol.2, No.2, pp.79-88, Dec. 2008.
  10. R. Kubota, N. Suetake, E. Uchino, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “Polynomial-based Boundary Extraction of Plaque in Intravascular Ultrasound Image by Using Its Local Statistical Information,”
    Innovative Computing, Information and Control Express Letters (ICIC-EL), Vol.2, No.4, pp.387-393, Dec. 2008.
  11. R. Kubota, E. Uchino and N. Suetake,
    “Hierarchical k-nearest Neighbor Classification Using Feature and Observation Space Information,”
    IEICE Electronics Express (ELEX), Vol.5, No.3, pp.114-119, 2008.
  12. R. Kubota, K. Horio and T. Yamakawa,
    “Binary Self-Organizing Map with Modified Updating Rule and Its Application to Reproduction of Genetic Algorithm,”
    IEICE Transactions on Information and Systems, Vol.E90-D, No.1, pp.382-383, Jan. 2007.
  13. R. Kubota, K. Horio and T. Yamakawa,
    “Reproduction Strategy Based on Self-Organizing Map for Genetic Algorithms,”
    International Journal of Innovative Computing, Information and Control (IJICIC), Vol.1, No.4, pp.595-607, Dec. 2005.
  14. R. Kubota, T. Yamakawa and K. Horio,
    “Reproduction Strategy Based on Self-Organizing Map for Real-coded Genetic Algorithms,”
    Neural Information Processing - Letters and Reviews (NIP-LR), Vol.5, No.2, pp.27-32, Nov. 2004.
Refereed Papers in Edited Books
  1. R. Kubota, S. Ichiyama, N. Suetake, E. Uchino, G. Hashimoto, T. Hiro and M. Matsuzaki,
    "Plaque Boundary Extraction in Intravascular Ultrasound Image in Conjunction with Image Separability and Fuzzy Inference,"
    Trends in Communication Technology and Engineering Science (Lecture Notes in Electrical Engineering, Vol.33), Sio-Iong Ao, Xu Huang and Ping-kong Alexander Wai (Eds.), pp.139-150, Springer-Verlag, Apr. 2009.
  2. R. Kubota, K. Horio and T. Yamakawa,
    “Genetic Algorithm with Modified Reproduction Strategy Based on Self-Organizing Map and Usable Schema,”
    International Congress Series 1291: Brain-Inspired IT II, Kazuo Ishii, Kiyohisa Natsume and Akitoshi Hanazawa (Eds), pp.169-172, Elsevier Science, Jun. 2006.
  3. T. Yamakawa, K. Horio and R. Kubota,
    “A SOM Association Network,”
    Advanced in Self-Organizing Maps, Nigel Allinson, Hujun Yin, Lesley Allinson and Jon Slack (Eds), pp.15-20, Springer-Verlag, Jun. 2001.
Refereed Papers in International Conferences and Workshops
  1. R. Kubota, H. Tamukoh, H. Kawano, N. Suetake, B. Cha and T. Aso,
    "A Color Quantization Based on Vector Error Diffusion and Particle Swarm Optimization Considering Human Visibility,"
    Proceedings of the 7th Pacific-Rim Symposium on Image and Video Technology (PSIVT2015), in CD-ROM (12 pages), Auckland, New Zealand, Nov. 23-27, 2015.
  2. K. Sueyasu and R. Kubota,
    "A Modified Particle Swarm Optimization Considering Conflated Component of Personal and Global Best Positions,"
    Proceedings of the International Workshop on Smart Info-Media Systems in Asia (SISA2015), pp. 62-67, Chiba, Japan, Aug. 26-28, 2015.
  3. M. Kondo and R. Kubota,
    "A Modified Genetic Algorithm for Nurse Scheduling Problem with Considering Individual Preference,"
    Proceedings of the International Symposium on Technology for Sustainability (ISTS2014), in CD-ROM (4 pages), Taipei, Taiwan ROC, Nov. 19-21, 2014.
  4. S. Ishikawa, R. Kubota and K. Horio,
    "Hierarchical Optimization Using Hierarchical Multi-competitive Genetic Algorithm and Its Application to Multiple Vehicle Routing Problem,"
    Proceedings of the International Conference on Signal Processing and Multimedia Applications (SIGMAP2014), pp. 269-274, Vienna, Austria, Sep. 2-5, 2014.
  5. R. Kubota, K. Onaga and N. Suetake,
    "Switching Median Filter with Signal Dependent Thresholds Designed by Using Genetic Algorithm,"
    Proceedings of the 9th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISAPP 2014), pp.222-227, Lisbon, Portugal, Jan. 5-8, 2014.
  6. H. Tamukoh, H. Kawano, N. Suetake, R. Kubota, B. Cha and T. Aso,
    "Fuzzy-Rule-Embedded Reduction Image Construction Method for Image Enlargement with High Magnification,"
    Proceedings of the 9th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISAPP 2014), pp.228-233, Lisbon, Portugal, Jan. 5-8, 2014.
  7. S. Ishikawa, Y. Ueda, R. Kubota, K. Horio and T. Yamakawa,
    "Signal Sources Localization Using GA Preserving Genetic Diversity Based on Fitness Values,"
    Proceedings of The 2013 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2013), pp.718-721, Okinawa, Japan, Nov. 12-15, 2014.
  8. Y. Ueda, N. Suetake, K. Horio and R. Kubota,
    "A Variability-based Adaptive Mutation Operator for Interactive Genetic Algorithm,"
    Proceedings of The 14th International Symposium on Advanced Intelligent Systems (ISIS2013), in USB Proceedings (6 pages), Daejeon, Korea, Nov. 13-16, 2013.
  9. Y. Ueda, Y. Kuramoto, R. Kubota, N. Suetake and E. Uchino,
    "An Interactive Genetic Algorithm-based Image Sharpening System Considering User's Liking,"
    Proceedings of 2013 IEEE Symposium Series on Computational Intelligence (IEEE SSCI 2013), pp. 91-96, Singapore, Apr. 16-19, 2013.
  10. R. Kubota and H. Tamukoh,
    "A Modified Particle Swarm Optimization Considering Component Combined with Personal Best Positions,"
    Proceedings of 7th WSEAS International Conference on Circuits, Systems, Signal and Telecommunications (CSST'13), pp. 55-58, Milan, Italy, Jan. 9-11, 2013.
  11. K. Onaga, R. Kubota and K. Horio,
    "Switching Median Filter with Signal Dependent Thresholds Designed by Using Noise Probability Distribution,"
    Proceedings of The 2012 International Workshop on Smart Info-Media Systems in Asia (SISA2012)}, pp. 16-19, Bangkok, Thailand, Sep. 6-8, 2012.
  12. Y. Ueda, R. Kubota and N. Suetake,
    "A Modified Selection Operator Considering with Fitness-based Variability in Real-coded Genetic Algorithm,"
    Proceedings of The 2012 International Workshop on Smart Info-Media Systems in Asia (SISA2012)}, pp. 156-161, Bangkok, Thailand, Sep. 6-8, 2012.
  13. R. Kubota and N. Suetake,
    "Switching Vector Median Filter with Component-wise Noise Detector by Using Noise Distribution,"
    Proceedings of The International Workshop on Advanced Image Technology (IWAIT2012), pp.604-608, Ho Chi Minh City, Vietnam, Jan. 9-10, 2012.
  14. E. Uchino, N. Suetake, R. Kubota, T. Koga, T. Hiro and M. Matsuzaki,
    "Tissue Characterization of Coronary Plaque by Soft Computing for the Diagnosis of Arteriosclerosis,"
    Proceedings of The 2012 International Symposium on Semiconductor Manufacturing Intelligence (ISMI 2012), in CD-ROM (6 pages), Hsinchu, Taiwan, Jan. 6-8, 2012.
  15. R. Kubota and Y. Ueda,
    "Self-Organizing Map-Based Reproduction with Visualization of Search Process in Real-Coded Genetic Algorithm,"
    Proceedings of The 12th International Symposium on Advanced Intelligent Systems (ISIS2011), pp.350-353, Suwon, Korea, Sep.28-Oct.1. 2011.
  16. R. Kubota, Y. Kawamura, N. Suetake and E. Uchino,
    "Tone Quality Improvement of Bone Conduction Voice by Cepstrum-based Local Conversion Models,"
    Recent Researches in Multimedia Systems, Signal Processing, Robotics, Control and Manufacturing Technology, S. Chen, Nikos Mastorakis, Francklin Rivas-Echeverria, Valeri Mladenov (Eds.), WSEAS Press, pp.74-98: Proceedings of The 11th WSEAS International Conference on Multimedia Systems and Signal Processing (MUSP'11), Venice, Italy, Mar. 8-10, 2011.
  17. K. Horio, S. Ishikawa, H. Misawa, T. Tokiwa, T. Yamakawa and R. Kubota,
    "Multi-space Competitive DGA and Its Application to Locallization of Multiple Signal Sources,"
    Proceedings of The 2nd World Congress on Nature and Biologically Inspired Computing (NaBIC2010), pp.624-628, Kitakyushu, Japan, Dec. 15-17, 2010.
  18. R. Kubota and N. Suetake,
    "Threshold Tuning of Switching Median Filter Employing Distribution Distance,"
    Proceedings of The 4th Pacific-Rim Symposium on Image and Video Technology (PSIVT2010), pp.427-431, Singapore, Singapore, Nov. 14-17, 2010.
  19. R. Kubota, N. Suetake and E. Uchino,
    "Random-valued Impulse Noise Detection Based on Color Distance on CIELAB and RGB Color Spaces,"
    Proceedings of The International Workshop on Advanced Image Technology (IWAIT2010), in CD-ROM, Kuala Lumpur, Malaysia, Mar. 11-12, 2010.
  20. R. Kubota, E. Uchino, N. Suetake and M. Kunihiro,
    “A Code Vector Conversion Model for Bone and Air Conduction Voices by Using Self-Organizing Map with Additional Learning,”
    Proceedings of The 2009 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP'09), pp.109-112, Waikiki, Hawaii, Mar. 1-3, 2009.
  21. R. Kubota, T. Okamoto, N. Suetake, E. Uchino, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “Discrete Genetic Algorithm with Laplacian of Gaussian-based Edge Detector for Plaque Boundary Extraction in Intravascular Ultrasound Image,”
    Proceedings of The 2009 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP'09), pp.329-332, Waikiki, Hawaii, Mar. 1-3, 2009.
  22. E. Uchino, N. Suetake, R. Kubota, T. Koga, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “An ROC Performance Validation of Hierarchical k-Nearest Neighbor Classifier Applied to Tissue Characterization Using IVUS-RF Signal,”
    Proceedings of The 2009 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP'09), pp.333-336, Waikiki, Hawaii, Mar. 1-3, 2009.
  23. R. Kubota, M. Kunihiro, N. Suetake, E. Uchino, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “Statistical Tissue Characterization of Coronary Plaque by ASSOM Using Intravascular Ultrasound Method,”
    Recent Advances in System Science and Simulation in Engineering, Subhas C. Misra, Roberto Revetria, Les M. Sztandera, Mihaiela Iliescu, Azami Zaharim and Hamed Parsiani (Eds), WSEAS Press, pp.85-90: Proceedings of The 7th International Conference on System Science in Engineering (ICOSSSE'08), Venice, Italy, Nov. 21-23, 2008.
  24. R. Kubota, E. Uchino, N. Suetake, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “Genetic Algorithm-based Boundary Extraction of Plaque in Intravascular Ultrasound Image,”
    Recent Advances in System Science and Simulation in Engineering, Subhas C. Misra, Roberto Revetria, Les M. Sztandera, Mihaiela Iliescu, Azami Zaharim and Hamed Parsiani (Eds), WSEAS Press, pp.91-94: Proceedings of The 7th International Conference on System Science in Engineering (ICOSSSE'08), Venice, Italy, Nov. 21-23, 2008.
  25. R. Kubota, M. Kunihiro, N. Suetake, E. Uchino, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “Feature Extraction of Intravascular Ultrasound RF Signal for Tissue Characterization by Using Adaptive Subspace Self-Organizing Map,”
    Proceedings of Joint 4rd International Conference on Soft Computing and Intelligent Systems and 8th International Symposium on Advanced Intelligent Systems (SCIS&ISIS 2008), pp. 1096-1099, Aichi, Japan, Sep. 17-21, 2008.
  26. T. Azetsu, E. Uchino, R. Kubota and N. Suetake,
    “Feature Extraction and Signal Reconstruction of Air and Bone Conduction Voices by Independent Component Analysis,”
    Proceedings of The 2008 IAENG International Conference on Artificial Intelligence and Applications (ICAIA2008), pp.55-59, Hong Kong, Mar. 19-21, 2008.
  27. R. Kubota, S. Ichiyama, N. Suetake, E. Uchino, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “Fuzzy Rule-based Boundary Extraction of Plaque in Intravascular Ultrasound Image,”
    Proceedings of The 2008 IAENG International Conference on Imaging Engineering (ICIE2008), pp.597-600, Hong Kong, Mar. 19-21, 2008. (Best Paper Award)
  28. R. Kubota, M. Kunihiro, N. Suetake, E. Uchino, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “Intravascular Ultrasound-based Tissue Classification of Coronary Plaque into Fibrosis or Lipid by k-Nearest Neighbor Method,”
    Proceedings of Biomedical Fuzzy Systems Association (BMFSA) 2007 International Conference on Soft Computing and Human Sciences (SCHS2007), pp. 93-96, Kitakyushu, Japan, Aug. 2-5, 2007.
  29. R. Kubota, T. Okamoto, N. Suetake, E. Uchino, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “Boundary Extraction of Plaque in Intravascular Ultrasound Image by Using Weighted Least Square Method with Statistical Discriminant Criterion,”
    Proceedings of Biomedical Fuzzy Systems Association (BMFSA) 2007 International Conference on Soft Computing and Human Sciences (SCHS2007), pp. 189-192, Kitakyushu, Japan, Aug. 2-5, 2007.
  30. S. Sonoh, K. Horio, R. Kubota and T. Yamakawa,
    “An Improvement of Selection Strategy Using Self-Organizing Maps with Two Type Input Vectors as Reinforcer/Punisher,”
    Proceedings of Joint 3rd International Conference on Soft Computing and Intelligent Systems and 7th International Symposium on Advanced Intelligent Systems (SCIS&ISIS 2006), pp. 578-582, Tokyo, Japan, Sep. 20-24, 2006.
  31. E. Uchino, N. Suetake, R. Kubota, G. Hashimoto, T. Hiro and M. Matsuzaki,
    “Advanced LVQ with Use of Neighborhood Information on Data Measurement Points and Its Application to IVUS Data,”
    Proceedings of Joint 3rd International Conference on Soft Computing and Intelligent Systems and 7th International Symposium on Advanced Intelligent Systems (SCIS&ISIS 2006), pp. 593-597, Tokyo, Japan, Sep. 20-24, 2006.(Session Best Presentation Award)
  32. R. Kubota, K. Horio and T. Yamakawa,
    “Binary SOM Based on Significance of Inputs and Its Application to Reproduction of GA,”
    Proceedings of Workshop on Self-Organizing Maps 2005 (WSOM’05), pp.211-218, Paris, France, Sep. 5-9, 2005.
  33. R. Kubota, K. Horio and T. Yamakawa,
    “Optimal Design of Reproduction Strategy in Real-coded Genetic Algorithm using Self-Organizing Map,”
    Proceedings of International Conference on Neuro-Computing and Evolving Intelligence 2004 (NCEI’04), pp. 26-27, Auckland, New Zealand, Dec. 13-15, 2004.
  34. T. Yamakawa, K. Horio and R. Kubota,
    “Modified Adaptive Subspace Self-Organizing Map and its Application to Speaker Classification,”
    Proceedings of 6th International Conference on Soft Computing and Information/Intelligent Systems (IIZUKA2000), pp. 215-220, Iizuka, Japan, Oct. 1-4, 2000.
Papers in International Symposiums
  1. R. Kubota, K. Horio and T. Yamakawa,
    “Genetic Algorithm with Reproduction Strategy Based on Binary Self-Organizing Map,”
    Proceedings of 5th POSTECH-KYUTECH Joint Workshop on Neuroinformatics, pp. 30-31, Pohang, Korea, Aug. 23-24, 2005.
  2. T. Yamakawa, R. Kubota and S. Tsutsui,
    “An Advanced Self-Organizing Map with Tree-Structure Type Input,”
    Proceedings of 5th POSTECH-KYUTECH Joint Workshop on Neuroinformatics, pp. 26-27, Pohang, Korea, Aug. 23-24, 2005.
Technical Reports (in Japanese)
  1. Y. Ueda, Y. kuramoto, R. Kubota, N. Suetake and E. Uchino,
    "An Image Sharpening System Considering User's Liking Based on Interactive Genetic Algorithm,"
    IEICE Technical Report, Vol.112, No.348, pp. 13-18, Chiba, Japan, Dec. 13-14, 2012.
  2. Y. Ueda and R. Kubota,
    "A Reproduction Method of Real-Coded Genetic Algorithm Based on Self-Organizing Map,"
    IEICE Technical Report, Vol.111, No.342, pp. 25-29, Yamaguchi, Japan, Dec. 15-16, 2011.
  3. S. Ishikawa, H. Misawa, R. Kubota and K. Horio,
    "An Improvement of the Stability of Search in Multi-space Competitive DGA,"
    IEICE Technical Report, Vol.111, No.342, pp. 31-36, Yamaguchi, Japan, Dec. 15-16, 2011.
  4. R. Kubota, M. Hirakawa and H. Tamukoh,
    "Particle Swarm Optimization Considering Component Combined with Personal Best Positions,"
    IEICE Technical Report, SIS2011-1, Vol.111, No.78, pp. 1-4, Okinawa, Japan, Jun. 9-10, 2011.
  5. R. Kubota and N. Suetake,
    "Random-valued Impulse Noise Removal Based on Switching Median Filter with Threshold Auto-Tuning,"
    IEICE Technical Report, SIS2010-35, Vol.110, No.332, pp. 1-6, Nara, Japan, Dec. 2-3, 2010.
  6. R. Kubota, N. Suetake and E. Uchino,
    "Random-valued Impulse Noise Detection Method Employing Color Distance and Correlation among RGB components,"
    IEICE Technical Report, SIS2009-44, Vol.109, No.338, pp. 79-84, Kyoto, Japan, Dec. 17-18, 2009.
Domestic Papers and Patents

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