Data-Driven Time-Limited h2 Optimal Model Reduction for Linear Discrete-Time Systems.

Kazuhiro Sato

Hiroki Sakamoto Kazuhiro Sato Data-Driven Time-Limited h2 Optimal Model Reduction for Linear Discrete-Time Systems. 2026 January abs/2601.08372 CoRR https://doi.org/10.48550/arXiv.2601.08372 db/journals/corr/corr2601.html#abs-2601-08372 streams/journals/corr

Yosuke Kajiura Kazuhiro Sato Generalized Resistance Geometry from Kron Reduction and Effective Resistance. 2026 March abs/2603.29675 CoRR https://doi.org/10.48550/arXiv.2603.29675 db/journals/corr/corr2603.html#abs-2603-29675 streams/journals/corr

Hiroki Sakamoto Kazuhiro Sato Compression Method for Deep Diagonal State Space Model Based on H2 Optimal Reduction. 2043-2048 2025 9 IEEE Control. Syst. Lett. https://doi.org/10.1109/LCSYS.2025.3591023 db/journals/csysl/csysl9.html#SakamotoS25 streams/journals/csysl

Yao Mo Jitao Sun Kazuhiro Sato Finite-Time Controllability Scores of Large-Scale Switched Systems. 3139-3166 2025 63 SIAM J. Control. Optim. 5 https://doi.org/10.1137/24m1686334 db/journals/siamco/siamco63.html#MoSS25 streams/journals/siamco

Kazuhiro Sato Ryohei Kawamura Uniqueness Analysis of Controllability Scores and Their Application to Brain Networks. 2568-2580 2025 December 12 IEEE Trans. Control. Netw. Syst. 4 https://doi.org/10.1109/TCNS.2025.3583613 db/journals/tcns/tcns12.html#SatoK25 streams/journals/tcns

Takumi Yonaiyama Kazuhiro Sato Analysis of Linear Consensus Algorithm on Strongly Connected Graph Using Effective Resistance. 2025 February abs/2502.19720 CoRR https://doi.org/10.48550/arXiv.2502.19720 db/journals/corr/corr2502.html#abs-2502-19720 streams/journals/corr

Hiroki Sakamoto Kazuhiro Sato Compression Method for Deep Diagonal State Space Model Based on H2 Optimal Reduction. 2025 July abs/2507.10078 CoRR https://doi.org/10.48550/arXiv.2507.10078 db/journals/corr/corr2507.html#abs-2507-10078 streams/journals/corr

Hiroki Sakamoto Kazuhiro Sato A Deep State-Space Model Compression Method using Upper Bound on Output Error. 2025 October abs/2510.14542 CoRR https://doi.org/10.48550/arXiv.2510.14542 db/journals/corr/corr2510.html#abs-2510-14542 streams/journals/corr

Haruka Ezoe Kazuhiro Sato Model Compression Method for S4 With Diagonal State Space Layers Using Balanced Truncation. 116415-116427 2024 12 IEEE Access https://doi.org/10.1109/ACCESS.2024.3446642 db/journals/access/access12.html#EzoeS24 streams/journals/access

Kazuhiro Sato Masato Suzuki The nearest graph Laplacian in Frobenius norm. 2024 December 31 Numer. Linear Algebra Appl. 6 https://doi.org/10.1002/nla.2578 db/journals/nla/nla31.html#SatoS24 streams/journals/nla

Shokichi Takakura Kazuhiro Sato Structured Output Feedback Control for Linear Quadratic Regulator Using Policy Gradient Method. 363-370 2024 January 69 IEEE Trans. Autom. Control. 1 https://doi.org/10.1109/TAC.2023.3264176 db/journals/tac/tac69.html#TakakuraS24

Shun Terasaki Kazuhiro Sato Minimal Controllability Problem on Linear Structural Descriptor Systems With Forbidden Nodes. 527-534 2024 January 69 IEEE Trans. Autom. Control. 1 https://doi.org/10.1109/TAC.2023.3268288 db/journals/tac/tac69.html#TerasakiS24

Mitsuaki Obara Kazuhiro Sato Hiroki Sakamoto Takayuki Okuno Akiko Takeda Stable Linear System Identification With Prior Knowledge by Riemannian Sequential Quadratic Optimization. 2060-2066 2024 March 69 IEEE Trans. Autom. Control. 3 https://doi.org/10.1109/TAC.2023.3318195 db/journals/tac/tac69.html#ObaraSSOT24

Kazuhiro Sato Shun Terasaki Controllability Scores for Selecting Control Nodes of Large-Scale Network Systems. 4673-4680 2024 July 69 IEEE Trans. Autom. Control. 7 https://doi.org/10.1109/tac.2024.3355806 https://www.wikidata.org/entity/Q129996374 db/journals/tac/tac69.html#SatoT24 streams/journals/tac

Haruka Ezoe Kazuhiro Sato Learning Method for S4 with Diagonal State Space Layers using Balanced Truncation. 2024 abs/2402.15993 CoRR https://doi.org/10.48550/arXiv.2402.15993 db/journals/corr/corr2402.html#abs-2402-15993

Ryoji Anzaki Kazuhiro Sato Violina: Various-of-trajectories Identification of Linear Time-invariant Non-Markovian Dynamics. 2024 abs/2409.19978 CoRR https://doi.org/10.48550/arXiv.2409.19978 db/journals/corr/corr2409.html#abs-2409-19978 streams/journals/corr

Hiroki Sakamoto Kazuhiro Sato Random projection preserves stability with high probability. 17-20 2023 15 JSIAM Lett. https://doi.org/10.14495/jsiaml.15.17 db/journals/jsiaml/jsiaml15.html#SakamotoS23

Hiroki Sakamoto Kazuhiro Sato Stable probability of reduced matrix obtained by Gaussian random projection. 77-80 2023 15 JSIAM Lett. https://doi.org/10.14495/jsiaml.15.77 db/journals/jsiaml/jsiaml15.html#SakamotoS23a

Tomohiro Sugiyama Kazuhiro Sato Kron Reduction and Effective Resistance of Directed Graphs. 270-292 2023 March 44 SIAM J. Matrix Anal. Appl. 1 https://doi.org/10.1137/22m1480823 db/journals/siammax/siammax44.html#SugiyamaS23

Kazuhiro Sato Reduced Model Reconstruction Method for Stable Positive Network Systems. 5616-5623 2023 September 68 IEEE Trans. Autom. Control. 9 https://doi.org/10.1109/TAC.2022.3218620 db/journals/tac/tac68.html#Sato23

Sota Misawa Kazuhiro Sato H2-Optimal Reduction of Positive Networks Using Riemannian Augmented Lagrangian Method. 2539-2544 2022 6 IEEE Control. Syst. Lett. https://doi.org/10.1109/LCSYS.2022.3166640 db/journals/csysl/csysl6.html#MisawaS22

Shun Terasaki Kazuhiro Sato Minimal Controllability Problems on Linear Structural Descriptor Systems. 2522-2528 2022 67 IEEE Trans. Autom. Control. 5 https://doi.org/10.1109/TAC.2021.3079359 db/journals/tac/tac67.html#TerasakiS22

Tomohiro Sugiyama Kazuhiro Sato Kron Reduction and Effective Resistance of Directed Graphs. 2022 abs/2202.12560 CoRR https://arxiv.org/abs/2202.12560 db/journals/corr/corr2202.html#abs-2202-12560

Kazuhiro Sato Shun-ichi Azuma Analysis and Design of Aggregate Demand Response Systems Based on Controllability. 940-948 2021 104-A IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 6 https://doi.org/10.1587/transfun.2020eap1093 db/journals/ieiceta/ieiceta104.html#SatoA21

Shun Terasaki Kazuhiro Sato Minimal controllability problem on linear structural descriptor systems with forbidden nodes. 2021 abs/2112.07124 CoRR https://arxiv.org/abs/2112.07124 db/journals/corr/corr2112.html#abs-2112-07124

Sota Misawa Kazuhiro Sato H2-Optimal Reduction of Positive Networks using Riemannian Augmented Lagrangian Method. 2021 abs/2112.15389 CoRR https://arxiv.org/abs/2112.15389 db/journals/corr/corr2112.html#abs-2112-15389

Kazuhiro Sato Akiko Takeda Construction Methods of the Nearest Positive System. 97-102 2020 4 IEEE Control. Syst. Lett. 1 https://doi.org/10.1109/LCSYS.2019.2921838 https://www.wikidata.org/entity/Q127722380 db/journals/csysl/csysl4.html#SatoT20

Kazuhiro Sato Akiko Takeda Controllability Maximization of Large-Scale Systems Using Projected Gradient Method. 821-826 2020 4 IEEE Control. Syst. Lett. 4 https://doi.org/10.1109/LCSYS.2020.2993983 db/journals/csysl/csysl4.html#SatoT20a

Kazuhiro Sato Hiroyuki Sato 0001 Tobias Damm Riemannian Optimal Identification Method for Linear Systems With Symmetric Positive-Definite Matrix. 4493-4508 2020 65 IEEE Trans. Autom. Control. 11 https://doi.org/10.1109/TAC.2019.2957350 https://www.wikidata.org/entity/Q115264170 db/journals/tac/tac65.html#SatoSD20

Kazuhiro Sato Riemannian Optimal Model Reduction of Stable Linear Systems. 14689-14698 2019 7 IEEE Access https://doi.org/10.1109/ACCESS.2019.2892071 https://www.wikidata.org/entity/Q115267804 db/journals/access/access7.html#Sato19

Kazuhiro Sato Optimal graph Laplacian. 374-378 2019 103 Autom. https://doi.org/10.1016/j.automatica.2019.02.005 https://www.wikidata.org/entity/Q128384465 db/journals/automatica/automatica103.html#Sato19

Kazuhiro Sato Shun-ichi Azuma Secure Real-Time Control Through Fog Computation. 1017-1026 2019 15 IEEE Trans. Ind. Informatics 2 https://doi.org/10.1109/TII.2018.2880745 https://www.wikidata.org/entity/Q128991032 db/journals/tii/tii15.html#SatoA19

Hiroyuki Sato 0001 Kazuhiro Sato Riemannian Gradient-Based Online Identification Method for Linear Systems with Symmetric Positive-Definite Matrix. 3593-3598 2019 CDC https://doi.org/10.1109/CDC40024.2019.9030228 conf/cdc/2019 db/conf/cdc/cdc2019.html#SatoS19

Kazuhiro Sato Riemannian optimal model reduction of linear port-Hamiltonian systems. 428-434 2018 93 Autom. https://doi.org/10.1016/j.automatica.2018.03.051 https://www.wikidata.org/entity/Q115360085 db/journals/automatica/automatica93.html#Sato18

Tobias Damm Kazuhiro Sato Axel Vierling Numerical solution of Lyapunov equations related to Markov jump linear systems. 2018 25 Numer. Linear Algebra Appl. 6 https://doi.org/10.1002/nla.2113 db/journals/nla/nla25.html#DammSV18

Kazuhiro Sato Hiroyuki Sato 0001 Structure-Preserving H2 Optimal Model Reduction Based on the Riemannian Trust-Region Method. 505-512 2018 63 IEEE Trans. Autom. Control. 2 https://doi.org/10.1109/TAC.2017.2723259 https://www.wikidata.org/entity/Q115264474 db/journals/tac/tac63.html#SatoS18

Kazuhiro Sato Riemannian Optimal Model Reduction of Linear Second-Order Systems. 2-7 2017 1 IEEE Control. Syst. Lett. 1 https://doi.org/10.1109/LCSYS.2017.2698178 https://www.wikidata.org/entity/Q115266560 db/journals/csysl/csysl1.html#Sato17

Hiroyuki Sato 0001 Kazuhiro Sato Riemannian Optimal System Identification Algorithm for Linear MIMO Systems. 376-381 2017 1 IEEE Control. Syst. Lett. 2 https://doi.org/10.1109/LCSYS.2017.2719163 https://www.wikidata.org/entity/Q115266557 db/journals/csysl/csysl1.html#SatoS17

Kazuhiro Sato Shun-ichi Azuma Controllability Analysis of Aggregate Demand Response System in Multiple Price-Change Situation. 376-384 2017 100-A IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 2 https://doi.org/10.1587/transfun.E100.A.376 http://search.ieice.org/bin/summary.php?id=e100-a_2_376 db/journals/ieicet/ieicet100a.html#SatoA17

Kazuhiro Sato Riemannian Optimal Control and Model Matching of Linear Port-Hamiltonian Systems. 6575-6581 2017 62 IEEE Trans. Autom. Control. 12 https://doi.org/10.1109/TAC.2017.2712905 https://www.wikidata.org/entity/Q115264504 db/journals/tac/tac62.html#Sato17

Kazuhiro Sato Shun-ichi Azuma Privacy input design for concealing transient output of linear SISO systems. 3986-3991 2017 CDC https://doi.org/10.1109/CDC.2017.8264245 conf/cdc/2017 db/conf/cdc/cdc2017.html#SatoA17 Kazuhiro Sato Shun-ichi Azuma All stabilizing and concealing Gaussian type controllers for linear scalar systems. 2861-2866 2016 CDC https://doi.org/10.1109/CDC.2016.7798695 conf/cdc/2016 db/conf/cdc/cdc2016.html#SatoA16 Hiroyuki Sato 0001 Kazuhiro Sato A New H2 optimal model reduction method based on riemannian conjugate gradient method. 5762-5768 2016 CDC https://doi.org/10.1109/CDC.2016.7799155 conf/cdc/2016 db/conf/cdc/cdc2016.html#SatoS16 Kazuhiro Sato Shun-ichi Azuma Controllability of Aggregate Demand Response Systems for Real-Time Pricing. 33-34 2016 CPSNA https://doi.org/10.1109/CPSNA.2016.15 https://doi.ieeecomputersociety.org/10.1109/CPSNA.2016.15 conf/cpsna/2016 db/conf/cpsna/cpsna2016.html#SatoA16 Kazuhiro Sato Shun-ichi Azuma A controller design method for unidentifiable linear SISO systems. 1-6 2015 ASCC https://doi.org/10.1109/ASCC.2015.7244502 conf/ascc/2015 db/conf/ascc/ascc2015.html#SatoA15 Hiroyuki Sato 0001 Kazuhiro Sato Riemannian trust-region methods for H2 optimal model reduction. 4648-4655 2015 CDC https://doi.org/10.1109/CDC.2015.7402944 conf/cdc/2015 db/conf/cdc/cdc2015.html#SatoS15 Kazuhiro Sato An Algebraic Analysis Approach to Trajectory Tracking Control. Kyoto University, Japan 2014 https://ci.nii.ac.jp/naid/500000916098 https://doi.org/10.14989/doctor.k18406 https://dl.ndl.go.jp/info:ndljp/pid/8951092 http://hdl.handle.net/2433/188865 Kazuhiro Sato Yusuke Matsui 0001 Toshihiko Yamasaki Kiyoharu Aizawa Reference-based manga colorization by graph correspondence using quadratic programming. 15:1-15:4 2014 SIGGRAPH ASIA Technical Briefs https://doi.org/10.1145/2669024.2669037 conf/siggraph/2014asiabriefs db/conf/siggraph/siggraph2014asiabriefs.html#SatoMYA14 Kazuhiro Sato Algebraic observability of nonlinear differential algebraic systems with geometric index one. 2582-2587 2013 CDC https://doi.org/10.1109/CDC.2013.6760271 conf/cdc/2013 db/conf/cdc/cdc2013.html#Sato13 Kazuhiro Sato Flatness-based tracking control of nonlinear differential algebraic systems with geometric index one. 7443-7448 2013 CDC https://doi.org/10.1109/CDC.2013.6761071 conf/cdc/2013 db/conf/cdc/cdc2013.html#Sato13a

Kazuhiro Sato Toshihiro Iwai Configuration flatness of Lagrangian control systems with fewer controls than degrees of freedom. 334-342 2012 61 Syst. Control. Lett. 2 https://doi.org/10.1016/j.sysconle.2011.11.007 db/journals/scl/scl61.html#SatoI12

Yukiko Yamazaki Ryo Akashi Yutaka Banno Takashi Endo Hiroshi Ezura Kaoru Fukami-Kobayashi Kazuo Inaba Tadashi Isa Katsuhiko Kamei Fumie Kasai Masatomo Kobayashi Nori Kurata Makoto Kusaba Tetsuro Matuzawa Shohei Mitani Taro Nakamura 0003 Yukio Nakamura Norio Nakatsuji Kiyoshi Naruse Hironori Niki Eiji Nitasaka Yuichi Obata Hitoshi Okamoto Moriya Okuma Kazuhiro Sato Tadao Serikawa Toshihiko Shiroishi Hideaki Sugawara Hideko Urushibara Masatoshi Yamamoto Yoshio Yaoita Atsushi Yoshiki Yuji Kohara NBRP databases: databases of biological resources in Japan. 26-32 2010 38 Nucleic Acids Res. Database-Issue https://doi.org/10.1093/nar/gkp996 https://www.wikidata.org/entity/Q33601001 db/journals/nar/nar38.html#YamazakiABEEFIIKKKKKMMNNNNNNOOOSSSSUYYYK10

Hiroyuki Tsujikawa Kenji Shimazaki Shozo Hirano Kazuhiro Sato Masanori Hirofuji Junichi Shimada Mitsumi Ito Kiyohito Mukai Power-Supply Noise Reduction with Design for Manufacturability. 3421-3428 2005 88-A IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 12 https://doi.org/10.1093/ietfec/e88-a.12.3421 db/journals/ieicet/ieicet88a.html#TsujikawaSHSHSIM05

Kazuhiro Sato Shuhei Takimoto Evaluating Performance of High-Speed and Long Distance Communications on HIPPI-ATM Networks. 424-432 1996 conf/lcn/1996 LCN https://doi.org/10.1109/LCN.1996.558171 https://doi.ieeecomputersociety.org/10.1109/LCN.1996.558171 db/conf/lcn/lcn1996.html#SatoT96 Yo-ichi Yamamoto Miyoko Namioka Keiji Moki Kazuhiro Sato An Experimental Multi-Media Database System: MANDRILL - Its Architecture and Language. 342-349 1989 DASFAA db/conf/dasfaa/dasfaa89.html#YamamotoNMS89 conf/dasfaa/89 DASFAA89/P342.pdf conf/oopsla/AndrewsH87 journals/tois/BanerjeeCGKWBK87 conf/sigmod/CopelandM84 conf/oopsla/MerrowL87 ... ... conf/sigmod/WoelkKL86 ... Kiyoharu Aizawa Ryo Akashi Ryoji Anzaki Shun-ichi Azuma Yutaka Banno Tobias Damm Takashi Endo Haruka Ezoe Hiroshi Ezura Kaoru Fukami-Kobayashi Shozo Hirano Masanori Hirofuji Kazuo Inaba Tadashi Isa Mitsumi Ito Toshihiro Iwai Yosuke Kajiura Katsuhiko Kamei Fumie Kasai Ryohei Kawamura Masatomo Kobayashi Yuji Kohara Nori Kurata Makoto Kusaba Yusuke Matsui 0001 Tetsuro Matuzawa Sota Misawa Shohei Mitani Yao Mo Keiji Moki Kiyohito Mukai Taro Nakamura 0003 Yukio Nakamura Norio Nakatsuji Miyoko Namioka Kiyoshi Naruse Hironori Niki Eiji Nitasaka Mitsuaki Obara Yuichi Obata Hitoshi Okamoto Moriya Okuma Takayuki Okuno Hiroki Sakamoto Hiroyuki Sato 0001 Tadao Serikawa Junichi Shimada Kenji Shimazaki Toshihiko Shiroishi Hideaki Sugawara Tomohiro Sugiyama Jitao Sun Masato Suzuki Shokichi Takakura Akiko Takeda Shuhei Takimoto Shun Terasaki Hiroyuki Tsujikawa Hideko Urushibara Axel Vierling Masatoshi Yamamoto Yo-ichi Yamamoto Toshihiko Yamasaki Yukiko Yamazaki Yoshio Yaoita Takumi Yonaiyama Atsushi Yoshiki