Publications

Submitted/Preprints

  1. T. Kaminaga and H. Sasahara, "Data Informativity under Data Perturbation," 2025.
    [arXiv]

Journal Articles

  1. H. Sasahara, T. Yamada, J. Imura, and H. Sandberg, "Resilient Distribution Network Planning against Dynamic Malicious Power Injection Attacks," IEEE Transactions on Control of Network Systems, (to appear)
    DOI: 10.1109/TCNS.2025.3648474
  2. A. S. M. Bakibillah, M. A. S. Kamal, H. Sasahara, and J. Imura, "Energy-Efficient Driving Strategy on Curved Freeways under Black Ice Surface Conditions," International Journal of Transportation Science and Technology, (to appear)
  3. Z. Xu, H. Sasahara, and J. Imura, "EKF based System Parameter Estimation under High-dimensional Low-sample-size Data," Nonlinear Theory and Its Applications, IEICE, Vol. 17, No. 1, 2026.
    DOI: 10.1587/nolta.17.125
  4. K. Kim, H. Sasahara, and J. Imura, "Adaptive False Data Injection Attack Detection in Load Frequency Control Using Recurrent Neural Networks," SICE Journal of Control, Measurement, and System Integration, Vol. 18, No. 1, 2025.
    DOI: 10.1080/18824889.2025.2597566
  5. Y. Saito, H. Sasahara, and J. Imura, "Dynamical Network Markers for Heterogeneous Hierarchical Networks," Scientific Reports, Vol. 15, No. 21177, 2025.
    DOI: 10.1038/s41598-025-08338-y
  6. H. Sasahara, G. Dán, S. Amin, and H. Sandberg, "Green Routing Game: Pollution-aware Mixed Fleet Logistics with Shared Charging Facilities," IEEE Transactions on Automatic Control, Vol. 70, No. 7, pp. 4330-4343, 2025.
    DOI: 10.1109/TAC.2025.3526671
  7. X. Shen, H. Sasahara, J. Imura, M. Oku, and K. Aihara, "Re-stabilizing Large-Scale Network Systems Using High-Dimension Low-Sample-Size Data Analysis," IEEE Transactions on Emerging Topics in Computational Intelligence, Vol. 9, No. 2, pp. 1638-1649, 2025.
    DOI: 10.1109/TETCI.2024.3442824
  8. X. Shen, N. Shimada, H. Sasahara, and J. Imura, "Early Medical Treatment-Oriented System Identification Using Low-Sample-Size Data," IFAC Journal of Systems and Control, Vol. 27, 2024.
    DOI: 10.1016/j.ifacsc.2024.100245
  9. H. Sasahara and H. Sandberg, "Asymptotic Security using Bayesian Defense Mechanism with Application to Cyber Deception," IEEE Transactions on Automatic Control, Vol. 69, No. 8, pp. 5004-5019, 2024.
    DOI: 10.1109/TAC.2023.3340978
  10. X. Shen, H. Sasahara, M. Morishita, J. Imura, M. Oku, and K. Aihara, "Model-free Dominant Pole Placement for Restabilizing High-Dimensional Network Systems via Small-Sample-Size Data," IEEE Access, Vol. 11, pp. 45572-45585, 2023.
    DOI:10.1109/ACCESS.2023.3274530
  11. H. Yasukata, X. Shen, H. Sasahara, J. Imura, M. Oku, and K. Aihara, "Design of Input Assignment and Feedback Gains for Re-stabilizing Undirected Networks with High-dimension Low-sample-size Data," International Journal of Robust and Nonlinear Control, Vol. 33, No. 12, pp. 6734-6753, 2023.
    DOI:10.1002/rnc.6720
  12. H. Sasahara, T. Ishizaki, J. Imura, H. Sandberg, and K. H. Johansson, "Distributed Design of Glocal Controllers via Hierarchical Model Decomposition," IEEE Transactions on Automatic Control, Vol. 68, No. 10, pp. 6146-6159, 2023.
    DOI:10.1109/TAC.2023.3234919
  13. H. Sasahara, T. Ishizaki, J. Imura, and H. Sandberg, "Disconnection-aware Attack Detection and Isolation with Separation-based Detector Reconfiguration," IEEE Transactions on Control Systems Technology, Vol. 30, No. 4, pp. 1625-1640, 2022.
    DOI: 10.1109/TCST.2021.3118213
  14. H. Sasahara, T. Ishizaki, and J. Imura, "Parameterization of All Output-Rectifying Retrofit Controllers," IEEE Transactions on Automatic Control, Vol. 67, No. 5, pp. 2537-2543, 2022.
    DOI: 10.1109/TAC.2021.3082513
  15. H. Sasahara and H. Sandberg, "Epistemic Signaling Games for Cyber Deception with Asymmetric Recognition," IEEE Control Systems Letters, Vol. 6, pp. 854-859, 2021.
    DOI: 10.1109/LCSYS.2021.3087097
  16. T. Ishizaki, H. Sasahara, M. Inoue, T. Kawaguchi, and J. Imura, "Modularity-in-Design of Dynamical Network Systems: Retrofit Control Approach," IEEE Transactions on Automatic Control, Vol. 66, No. 11, pp. 5205-5220, 2021.
    DOI: 10.1109/TAC.2020.3035631
  17. T. Ishizaki, T. Kawaguchi, H. Sasahara, and J. Imura, "Retrofit Control with Approximate Environment Modeling," Automatica, Vol. 107, pp. 442-453, 2019.
    DOI: 10.1016/j.automatica.2019.06.010
  18. H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto, "Self-Interference Suppression based on Sampled-Data H-infinity Control for Baseband Signal Subspaces," SICE Journal of Control, Measurement, and System Integration, Vol. 12, No. 5, pp. 182-189, 2019.
    DOI: 10.9746/jcmsi.12.182
  19. H. Sasahara, T. Ishizaki, T. Sadamoto, T. Masuta, Y. Ueda, H. Sugihara, N. Yamaguchi, and J. Imura, "Damping Performance Improvement for PV-Integrated Power Grids via Retrofit Control," Control Engineering Practice, Vol. 84, pp. 92-101, 2019.
    DOI: 10.1016/j.conengprac.2018.11.004
  20. H. Sasahara, T. Ishizaki, T. Sadamoto, and J. Imura, "Distributed Design of Local Controllers for Transient Stabilization in Power Systems," Transactions on the Society of Instrument and Control Engineers, Vol. 53, No. 11, pp. 608-617, 2017. (in Japanese)
    DOI: 10.9746/sicetr.53.608
  21. H. Sasahara, K. Hayashi, and M. Nagahara, "Multiuser Detection based on MAP Estimation with Sum-of-Absolute-Values Relaxation," IEEE Transactions on Signal Processing, Vol. 65, No. 21, pp. 5621-5634, 2017.
    DOI: 10.1109/TSP.2017.2740164
  22. H. Sasahara, K. Hayashi, and M. Nagahara, "Symbol Detection for Faster-than-Nyquist Signaling by Sum-of-Absolute-Values Optimization," IEEE Signal Processing Letters, Vol. 23, No. 12, pp. 1853-1857, 2016. (IEEE Signal Processing Society Japan Student Journal Paper Award)
    DOI: 10.1109/LSP.2016.2625839
  23. H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto, "Digital Cancelation of Self-Interference for Single-Frequency Full-Duplex Relay Stations via Sampled-Data Control," SICE Journal of Control, Measurement, and System Integration, Vol. 8, No. 5, pp. 321-327, 2015. (SICE Kansai Chapter Encouragement Award)
    DOI: 10.9746/jcmsi.8.321

Referred Conference Proceedings

  1. L. Burbano, H. Sasahara, R. Song, Z. B. Celik, and A. Cardenas, "BADControl: Backdoor Attacks against Control Systems," USENIX Security, Aug. 2026. (top-tier conference on cybersecurity: acceptance rate -20%) (to appear)
  2. T. Kaminaga and H. Sasahara, "Data Informativity for Quadratic Stabilization under Data Perturbation," ACC (The 2025 American Control Conference), July 2025.
    DOI: 10.23919/ACC63710.2025.11107752
  3. X. Shen, H. Sasahara, J. Imura, and K. Aihara, "Small-Sample-Size Data-Driven Early Disease-Detection and Re-stabilization for Extended Gene Regulatory Networks," ACC (The 2025 American Control Conference), July 2025.
    DOI: 10.23919/ACC63710.2025.11107418
  4. L. Burbano, H. Sasahara, and A. Cardenas, "Steerability of Autonomous Cyber-Defense Agents by Meta-Attackers," IEEE CAI (2025 IEEE Conference on Artificial Intelligence), May 2025.
    DOI: 10.1109/CAI64502.2025.00194
  5. T. Kaminaga and H. Sasahara, "Adversarial Attack using Projected Gradient Method to Direct Data-Driven Control," CCTA (The 8th Conference on Control Technology and Applications), Aug. 2024.
    DOI: 10.1109/CCTA60707.2024.10666542
  6. H. Sasahara, "Adversarial Attacks to Direct Data-driven Control for Destabilization," CDC (The 62nd Conference on Decision and Control), Dec. 2023.
    DOI: 10.1109/CDC49753.2023.10383531
  7. K. Kim, H. Sasahara, and J. Imura, "Cyberattack Detection in Smart Grids based on Reservoir Computing," IFAC World Congress, July 2023.
    DOI: 10.1016/j.ifacol.2023.10.1691
  8. Y. Saito, H. Sasahara, X. Shen, J. Pena Ramirez, J. Imura, M. Oku, and K. Aihara, "Pre-disease Detection Using Dynamical Network Biomarkers in Gene Regulatory Networks with Cell-to-cell Interaction," IFAC World Congress, July 2023.
    DOI: 10.1016/j.ifacol.2023.10.859
  9. X. Shen, H. Sasahara, J. Imura, M. Oku, and K. Aihara, "Data-Driven Re-stabilization of Gene Regulatory Network Towards Early Medical Treatment," IFAC World Congress, July 2023.
    DOI: 10.1016/j.ifacol.2023.10.738
  10. J. Pena Ramirez, H. Sasahara, and J. Imura, "Detecting Pre-desynchronized States in Oscillatory Systems," IFAC World Congress, July 2023.
    DOI: 10.1016/j.ifacol.2023.10.673
  11. N. Shimada, X. Shen, H. Sasahara, and J. Imura, "System Identification Using Sample Covariance Matrix," IFAC World Congress, July 2023. (as discussion paper)
  12. H. Sasahara, G. Dán, S. Amin, and H. Sandberg, "Green Routing Game: Strategic Logistical Planning using Mixed Fleets of ICEVs and EVs," CDC (The 61st Conference on Decision and Control), Dec. 2022.
    DOI: 10.1109/CDC51059.2022.9992570
  13. H. Sasahara, T. Tanaka, and H. Sandberg, "Attack Impact Evaluation by Exact Convexification through State Space Augmentation," CDC (The 61st Conference on Decision and Control), Dec. 2022.
    DOI: 10.1109/CDC51059.2022.9992845
  14. H. Sasahara, T. Ishizaki, J. Imura, and H. Sandberg, "Disconnection-aware Attack Detection and Isolation with Separation-based Detector Reconfiguration," CCTA (The 6th IEEE Conference on Control Technology and Applications), Aug. 2022. (as IEEE TCST paper)
    DOI: 10.1109/TCST.2021.3118213
  15. H. Sasahara and H. Sandberg, "Asymptotic Security by Model-based Incident Handlers for Markov Decision Processes," CDC (The 60th Conference on Decision and Control), Dec. 2021. (SICE International Young Authors Award)
    DOI: 10.1109/CDC45484.2021.9682989
  16. H. Sasahara and H. Sandberg, "Epistemic Signaling Games for Cyber Deception with Asymmetric Recognition," CDC (The 60th Conference on Decision and Control), Dec. 2021. (as L-CSS paper)
    DOI: 10.1109/LCSYS.2021.3087097
  17. M. Lindström, H. Sasahara, X. He, H. Sandberg, and K. H. Johansson, "Power Injection Attacks in Smart Distribution Grids with Photovoltaics," ECC (European Control Conference 2021), June-July 2021.
    DOI: 10.23919/ECC54610.2021.9655167
  18. H. Sasahara, S. Sarıtaş, and H. Sandberg, "Asymptotic Security of Control Systems by Covert Reaction: Repeated Signaling Game with Undisclosed Belief," CDC (The 59th Conference on Decision and Control), Dec. 2020.
    DOI: 10.1109/CDC42340.2020.9304351
  19. H. Sasahara, T. Ishizaki, J. Imura, and H. Sandberg, "Disconnection-aware Attack Detection in Networked Control Systems," IFAC World Congress (The 21st World Congress of IFAC), July 2020. [MATLAB]
    DOI: 10.1016/j.ifacol.2020.12.1710
  20. H. Sasahara, T. Ishizaki, J. Imura, H. Sandberg, and K. H. Johansson, "Hierarchical Model Decomposition for Distributed Design of Glocal Controllers," CDC (The 58th Conference on Decision and Control), Dec. 2019.
    DOI: 10.1109/CDC40024.2019.9029589
  21. H. Sasahara, T. Ishizaki, and J. Imura, "Parameterization of All State-Feedback Retrofit Controllers," CDC (The 57th Conference on Decision and Control), Dec. 2018.
    DOI: 10.1109/CDC.2018.8619811
  22. H. Sasahara, T. Ishizaki, R. Onuki, and J. Imura, "Retrofit Control of Network Systems under Measurement Noise," IFAC CHAOS (The 5th IFAC Conference on Analysis and Control of Chaotic Systems), Oct.-Nov. 2018.
    DOI: 10.1016/j.ifacol.2018.12.097
  23. H. Sasahara, T. Ishizaki, M. Inoue, T. Sadamoto, and J. Imura, "A Characterization of All Retrofit Controllers," ACC (The 2018 American Control Conference), June 2018.
    DOI: 10.23919/ACC.2018.8430982
  24. H. Sasahara, T. Ishizaki, T. Sadamoto, and J. Imura, "Distributed Design of Power System Stabilizers for PV-Integrated Grids via Retrofit Control," Grand Renewable Energy 2018, June 2018.
  25. T. Kawaguchi, T. Ishizaki, H. Sasahara, and J. Imura, "Retrofit Control with System Identification for Transient Stabilization in Power Systems," Grand Renewable Energy 2018, June 2018.
  26. H. Sasahara, T. Ishizaki, T. Sadamoto, J. Imura, H. Sandberg, and K. H. Johansson, "Glocal Control for Network Systems via Hierarchical State-Space Expansion," CDC (The 56th Conference on Decision and Control), Dec. 2017.
    DOI: 10.1109/CDC.2017.8264616
  27. H. Sasahara, T. Ishizaki, T. Sadamoto, and J. Imura, "Distributed Design of Local Controllers for Transient Stabilization in Power Grids," IFAC World Congress (The 20th World Congress of IFAC), July 2017.
    DOI: 10.1016/j.ifacol.2017.08.1078
  28. H. Sasahara, K. Hayashi, and M. Nagahara, "Symbol Detection for Faster-than-Nyquist Signaling by Sum-of-Absolute-Values Optimization," ICASSP (The 42nd IEEE International Conference on Acoustics, Speech and Signal Processing), Mar. 2017.
    DOI: 10.1109/LSP.2016.2625839
  29. R. Hayakawa, K. Hayashi, H. Sasahara, and M. Nagahara, "Massive Overloaded MIMO Signal Detection via Convex Optimization with Proximal Splitting," EUSIPCO (The 2016 European Signal Processing Conference), Aug. - Sept. 2016.
    DOI: 10.1109/EUSIPCO.2016.7760475
  30. H. Sasahara, K. Hayashi, M. Nagahara, and Y. Yamamoto, "Control Theoretical Approach for Single-Frequency Full-Duplex Wireless Relaying,"" MTNS (22nd International Symposium on Mathematical Theory of Networks and Systems), July 2016.
  31. H. Sasahara, K. Hayashi, and M. Nagahara, "Multiuser Detection by MAP Estimation with Sum-of-Absolute-Values Relaxation," ICC (IEEE International Conference on Communiations), May 2016.
    DOI: 10.1109/ICC.2016.7511060
  32. H. Sasahara, K. Hayashi, and M. Nagahara, "Faster-than-Nyquist Signaling by Sum-of-Absolute-Values," SICE International Symposium on Control Systems, Mar. 2016.
    DOI: 10.1109/SICEISCS.2016.7470173
  33. H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto, "Sampled-data H-infinity Optimization for Self-interference Suppression in Baseband Signal Subspaces," CDC (The 54th Conference on Decision and Control), Dec. 2015.
    DOI: 10.1109/CDC.2015.7403362
  34. H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto, "Time-Domain Equalization for Single-Frequency Full-Duplex Wireless Relay Using H2 Optimal Control," The 47th International Symposium on Stochastic Systems Theory and Its Applications, Dec. 2015.
  35. H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto, "Loop-Back Interference Suppression for OFDM Signals via Sampled-Data Control," The 10th Asian Control Conference, May - June 2015.
    DOI: 10.1109/ASCC.2015.7244496
  36. H. Sasahara, M. Nagahara, K. Hayashi, and Y. Yamamoto, "Communication Performance Analysis of Sampled-Data H-infinity Optimal Coupling Wave Canceler," SICE International Symposium on Control Systems 2015, Mar. 2015.
  37. M. Nagahara, H. Sasahara, K. Hayashi, and Y. Yamamoto, "Sampled-Data H-infinity Design of Coupling Wave Cancelers in Single-Frequency Full-Duplex Relay Stations," SICE Annual Conference 2014, Sept. 2014.
    DOI: 10.1109/SICE.2014.6935200