Kohei Nakajima

104 papers A* 3A 4B 1C 4Misc 1Journal 62Unranked 23

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	Haptic Perception via the Dynamics of a Flexible Body Inspired by an Ostrich's Neck. Adv. Intell. Syst. Kazashi Nakano, Katsuma Inoue, Yasuo Kuniyoshi, Kohei Nakajima
2026	J	`jnl`	Optimal Memory Encoding Through Fluctuation-Response Structure. CoRR Lianxiang Cui, Kohei Nakajima, Kazuyuki Aihara
2025	J	`jnl`	Attractor-merging Crises and Intermittency in Reservoir Computing. CoRR Tempei Kabayama, Motomasa Komuro, Yasuo Kuniyoshi, Kazuyuki Aihara, Kohei Nakajima
2025	J	`jnl`	Backpropagation through Soft Body: Investigating Information Processing in Brain-Body Coupling Systems. CoRR Hiroki Tomioka, Katsuma Inoue, Yasuo Kuniyoshi, Kohei Nakajima
2025	J	`jnl`	Haptic Perception via the Dynamics of Flexible Body Inspired by an Ostrich's Neck. CoRR Kazashi Nakano, Katsuma Inoue, Yasuo Kuniyoshi, Kohei Nakajima
2025	J	`jnl`	Harnessing omnipresent oscillator networks as computational resource. CoRR Thomas Geert de Jong, Hirofumi Notsu, Kohei Nakajima
2025	J	`jnl`	Memory Determines Learning Direction: A Theory of Gradient-Based Optimization in State Space Models. CoRR JingChuan Guan, Tomoyuki Kubota, Yasuo Kuniyoshi, Kohei Nakajima
2025	J	`jnl`	Multifunctional physical reservoir computing in soft tensegrity robots. CoRR Ryo Terajima, Katsuma Inoue, Kohei Nakajima, Yasuo Kuniyoshi
2024	J	`jnl`	A Jellyfish Cyborg: Exploiting Natural Embodied Intelligence as Soft Robots. CoRR Dai Owaki, Max Austin, Shuhei Ikeda, Kazuya Okuizumi, Kohei Nakajima
2024	J	`jnl`	Designing Chaotic Attractors: A Semi-supervised Approach. CoRR Tempei Kabayama, Yasuo Kuniyoshi, Kazuyuki Aihara, Kohei Nakajima
2024	J	`jnl`	Exploiting Chaotic Dynamics as Deep Neural Networks. CoRR Shuhong Liu, Nozomi Akashi, Qingyao Huang, Yasuo Kuniyoshi, Kohei Nakajima
2024	J	`jnl`	How noise affects memory in linear recurrent networks. CoRR JingChuan Guan, Tomoyuki Kubota, Yasuo Kuniyoshi, Kohei Nakajima
2024	J	`jnl`	Informational Embodiment: Computational role of information structure in codes and robots. CoRR Alexandre Pitti, Kohei Nakajima, Yasuo Kuniyoshi
2024	—	`conf`	Memory Regressor Extended Echo State Networks for Nonlinear Dynamics Modeling. ECC Kai Hu, Qian Wang, Tian Shi, Kohei Nakajima, Yongping Pan
2024	J	`jnl`	Reservoir Computing Generalized. CoRR Tomoyuki Kubota, Yusuke Imai, Sumito Tsunegi, Kohei Nakajima
2024	J	`jnl`	Thermodynamic limit in learning period three. CoRR Yuichiro Terasaki, Kohei Nakajima
2024	J	`jnl`	Training Spiking Neural Networks via Augmented Direct Feedback Alignment. CoRR Yongbo Zhang, Katsuma Inoue, Mitsumasa Nakajima, Toshikazu Hashimoto, Yasuo Kuniyoshi, Kohei Nakajima
2023	J	`jnl`	"RobOstrich" Manipulator: A Novel Mechanical Design and Control Based on the Anatomy and Behavior of an Ostrich Neck. IEEE Robotics Autom. Lett. Kazashi Nakano, Megu Gunji, Masahiro Ikeda, Keung Or, Mitsuhito Ando, Katsuma Inoue, Hiromi Mochiyama, Kohei Nakajima, Ryuma Niiyama, Yasuo Kuniyoshi
2023	Misc	`conf`	Densely Parallelized Photonic Tensor Processor on Hybrid Waveguide/Free-Space-Optics. PSC Mitsumasa Nakajima, Kenji Tanaka, Katsuma Inoue, Kohei Nakajima, Toshikazu Hashimoto
2023	J	`jnl`	Embedding bifurcations into pneumatic artificial muscle. CoRR Nozomi Akashi, Yasuo Kuniyoshi, Taketomo Jo, Mitsuhiro Nishida, Ryo Sakurai, Yasumichi Wakao, Kohei Nakajima
2023	J	`jnl`	Generalized multiplicative stochastic processes arising from one-dimensional maps with noise. Artif. Life Robotics Taichi Haruna, Kohei Nakajima
2023	J	`jnl`	Information Processing Capacity of Spintronic Oscillator. Adv. Intell. Syst. Sumito Tsunegi, Tomoyuki Kubota, Akira Kamimaki, Julie Grollier, Vincent Cros, Kay Yakushiji, Akio Fukushima, Shinji Yuasa, Hitoshi Kubota, Kohei Nakajima, Tomohiro Taniguchi
2023	J	`jnl`	Virtual reservoir acceleration for CPU and GPU: Case study for coupled spin-torque oscillator reservoir. CoRR Thomas Geert de Jong, Nozomi Akashi, Tomohiro Taniguchi, Hirofumi Notsu, Kohei Nakajima
2022	J	`jnl`	A Coupled Spintronics Neuromorphic Approach for High-Performance Reservoir Computing. Adv. Intell. Syst. Nozomi Akashi, Yasuo Kuniyoshi, Sumito Tsunegi, Tomohiro Taniguchi, Mitsuhiro Nishida, Ryo Sakurai, Yasumichi Wakao, Kenji Kawashima, Kohei Nakajima
2022	J	`jnl`	Behavioral Diversity Generated From Body-Environment Interactions in a Simulated Tensegrity Robot. IEEE Robotics Autom. Lett. Ryo Terajima, Katsuma Inoue, Shogo Yonekura, Kohei Nakajima, Yasuo Kuniyoshi
2022	J	`jnl`	Composite FORCE learning of chaotic echo state networks for time-series prediction. CoRR Yansong Li, Kai Hu, Kohei Nakajima, Yongping Pan
2022	J	`jnl`	Continuum-Body-Pose Estimation From Partial Sensor Information Using Recurrent Neural Networks. IEEE Robotics Autom. Lett. Kazutoshi Tanaka, Yuna Minami, Yuji Tokudome, Katsuma Inoue, Yasuo Kuniyoshi, Kohei Nakajima
2022	J	`jnl`	Durable Pneumatic Artificial Muscles with Electric Conductivity for Reliable Physical Reservoir Computing. J. Robotics Mechatronics Ryo Sakurai, Mitsuhiro Nishida, Taketomo Jo, Yasumichi Wakao, Kohei Nakajima
2022	—	`conf`	Echo state property and memory in octopus-inspired soft robotic arm. RoboSoft Katsushi Kagaya, Bowei Yu, Yuna Minami, Kohei Nakajima
2022	J	`jnl`	Performance of reservoir computing in a random network of single-walled carbon nanotubes complexed with polyoxometalate. Neuromorph. Comput. Eng. Megumi Akai-Kasaya, Yuki Takeshima, Shaohua Kan, Kohei Nakajima, Takahide Oya, Tetsuya Asai
2022	J	`jnl`	Physical Deep Learning with Biologically Plausible Training Method. CoRR Mitsumasa Nakajima, Katsuma Inoue, Kenji Tanaka, Yasuo Kuniyoshi, Toshikazu Hashimoto, Kohei Nakajima
2022	J	`jnl`	Physics-Informed Recurrent Neural Networks for Soft Pneumatic Actuators. IEEE Robotics Autom. Lett. Wentao Sun, Nozomi Akashi, Yasuo Kuniyoshi, Kohei Nakajima
2022	—	`conf`	Pre-training on physical dynamics enhances indirect sensing in recurrent neural networks. MHS Mitsuhiro Nishida, Ryo Sakurai, Yasumichi Wakao, Kohei Nakajima
2022	J	`jnl`	Quantum Noise-Induced Reservoir Computing. CoRR Tomoyuki Kubota, Yudai Suzuki, Shumpei Kobayashi, Quoc-Hoan Tran, Naoki Yamamoto, Kohei Nakajima
2022	J	`jnl`	Quantum-Classical Hybrid Information Processing via a Single Quantum System. CoRR Quoc-Hoan Tran, Sanjib Ghosh, Kohei Nakajima
2022	—	`conf`	Self-Organization of Physics-Informed Mechanisms in Recurrent Neural Networks: A Case Study in Pneumatic Artificial Muscles. RoboSoft Wentao Sun, Nozomi Akashi, Yasuo Kuniyoshi, Kohei Nakajima
2022	J	`jnl`	Self-Organization of Remote Reservoirs: Transferring Computation to Spatially Distant Locations. Adv. Intell. Syst. Kazutoshi Tanaka, Yuji Tokudome, Yuna Minami, Satoko Honda, Toshiki Nakajima, Kuniharu Takei, Kohei Nakajima
2022	J	`jnl`	Special Issue on Science of Soft Robots. J. Robotics Mechatronics Koichi Suzumori, Ryuma Niiyama, Kenjiro Fukuda, Kohei Nakajima
2021	J	`jnl`	Algebraic approach towards the exploitation of "softness": the input-output equation for morphological computation. Int. J. Robotics Res. Mizuka Komatsu, Takaharu Yaguchi, Kohei Nakajima
2021	J	`jnl`	Flapping-Wing Dynamics as a Natural Detector of Wind Direction. Adv. Intell. Syst. Kazutoshi Tanaka, Shih-Hsin Yang, Yuji Tokudome, Yuna Minami, Yuyao Lu, Takayuki Arie, Seiji Akita, Kuniharu Takei, Kohei Nakajima
2021	J	`jnl`	Generalization Capability of Mixture Estimation Model for Peristaltic Continuous Mixing Conveyor. IEEE Access Sana Oshino, Rie Nishihama, Kota Wakamatsu, Katsuma Inoue, Daisuke Matsui, Manabu Okui, Kohei Nakajima, Yasuo Kuniyoshi, Taro Nakamura
2021	J	`jnl`	Learning Temporal Quantum Tomography. CoRR Quoc-Hoan Tran, Kohei Nakajima
2021	—	`conf`	Object Recognition Using the Deformation Dynamics of Polyurethane Foam. MHS Yasumichi Wakao, Ryo Sakurai, Hajime Kitano, Kohei Nakajima
2021	—	`conf`	Performance Improvement of FORCE Learning for Chaotic Echo State Networks. ICONIP (2) Ruihong Wu, Kohei Nakajima, Yongping Pan
2021	C	`conf`	Physical reservoir computing in a soft swimming robot. ALIFE Yuta Horii, Katsuma Inoue, Satoshi Nishikawa, Kohei Nakajima, Ryuma Niiyama, Yasuo Kuniyoshi
2021	—	`conf`	Physics-informed reservoir computing with autonomously switching readouts: a case study in pneumatic artificial muscles. MHS Wentao Sun, Nozomi Akashi, Yasuo Kuniyoshi, Kohei Nakajima
2021	—	`ch.`	Quantum Reservoir Computing: A Reservoir Approach Toward Quantum Machine Learning on Near-Term Quantum Devices. Reservoir Computing Keisuke Fujii, Kohei Nakajima
2021	—	`book`	Reservoir Computing - Theory, Physical Implementations, and Applications Reservoir Computing Kohei Nakajima, Ingo Fischer
2021	—	`ch.`	Reservoir Computing Based on Spintronics Technology. Reservoir Computing Tomohiro Taniguchi, Sumito Tsunegi, Shinji Miwa, Keisuke Fujii, Hitoshi Kubota, Kohei Nakajima
2021	—	`ch.`	Toward NMR Quantum Reservoir Computing. Reservoir Computing Makoto Negoro, Kosuke Mitarai, Kohei Nakajima, Keisuke Fujii
2021	J	`jnl`	Transient Chaos in BERT. CoRR Katsuma Inoue, Soh Ohara, Yasuo Kuniyoshi, Kohei Nakajima
2021	A	`conf`	Wearable Tactile Sensor Suit for Natural Body Dynamics Extraction: Case Study on Posture Prediction Based on Physical Reservoir Computing. IROS Hidenobu Sumioka, Kohei Nakajima, Kurima Sakai, Takashi Minato, Masahiro Shiomi
2020	J	`jnl`	Designing spontaneous behavioral switching via chaotic itinerancy. CoRR Katsuma Inoue, Kohei Nakajima, Yasuo Kuniyoshi
2020	—	`conf`	Emulating a sensor using soft material dynamics: A reservoir computing approach to pneumatic artificial muscle. RoboSoft Ryo Sakurai, Mitsuhiro Nishida, Hideyuki Sakurai, Yasumichi Wakao, Nozomi Akashi, Yasuo Kuniyoshi, Yuna Minami, Kohei Nakajima
2020	J	`jnl`	Higher-Order Quantum Reservoir Computing. CoRR Quoc-Hoan Tran, Kohei Nakajima
2020	—	`conf`	Mixing State Estimation of Peristaltic Continuous Mixing Conveyor with Distributed Sensing System Based on Soft Intestine Motion. RoboSoft Kota Wakamatsu, Katsuma Inoue, D. Hagiwara, H. Adachi, Daisuke Matsui, Shunichi Kurumaya, Rie Nishihama, Manabu Okui, Kohei Nakajima, Yasuo Kuniyoshi, Taro Nakamura
2020	J	`jnl`	Physical reservoir computing - An introductory perspective. CoRR Kohei Nakajima
2020	A	`conf`	Shape reconstruction of CCD camera-based soft tactile sensors. IROS Gabor Soter, Helmut Hauser, Andrew Conn, Jonathan Rossiter, Kohei Nakajima
2020	J	`jnl`	Universal Approximation Property of Quantum Feature Map. CoRR Takahiro Goto, Quoc-Hoan Tran, Kohei Nakajima
2019	J	`jnl`	Dynamical Anatomy of NARMA10 Benchmark Task. CoRR Tomoyuki Kubota, Kohei Nakajima, Hirokazu Takahashi
2019	—	`conf`	Echo State Property of Neuronal Cell Cultures. ICANN (Workshop) Tomoyuki Kubota, Kohei Nakajima, Hirokazu Takahashi
2019	—	`conf`	Information Processing Capability of Soft Continuum Arms. RoboSoft Estefany A. Torres, Kohei Nakajima, Isuru S. Godage
2019	J	`jnl`	Optimal short-term memory before the edge of chaos in driven random recurrent networks. CoRR Taichi Haruna, Kohei Nakajima
2019	—	`conf`	Soft bodies as input reservoir: role of softness from the viewpoint of reservoir computing. MHS Katsuma Inoue, Kohei Nakajima, Yasuo Kuniyoshi
2019	—	`conf`	Unpredictable as dice: analyzing riddled basin structures in a passive dynamic walker. MHS Nozomi Akashi, Kohei Nakajima, Yasuo Kuniyoshi
2018	J	`jnl`	Information Processing Capability of Soft Continuum Arms. CoRR Estefany A. Torres, Kohei Nakajima, Isuru S. Godage
2018	C	`conf`	Information processing using a single Izhikevich neuron. ALIFE Tomoyuki Kubota, Kohei Nakajima, Hirokazu Takahashi
2018	—	`conf`	Mass-Spring Damper Array as a Mechanical Medium for Computation. ICANN (3) Yuki Yamanaka, Takaharu Yaguchi, Kohei Nakajima, Helmut Hauser
2018	J	`jnl`	Use of recurrent infomax to improve the memory capability of input-driven recurrent neural networks. CoRR Hisashi Iwade, Kohei Nakajima, Takuma Tanaka, Toshio Aoyagi
2016	J	`jnl`	Harnessing disordered quantum dynamics for machine learning. CoRR Keisuke Fujii, Kohei Nakajima
2014	J	`jnl`	Dynamics Underneath Symbols: A Case Study in Autonomous Agents. CoRR Kohei Nakajima
2014	J	`jnl`	Exploiting short-term memory in soft body dynamics as a computational resource. CoRR Kohei Nakajima, Tao Li, Helmut Hauser, Rolf Pfeifer
2014	J	`jnl`	Measuring information transfer in a soft robotic arm. CoRR Kohei Nakajima, Nico M. Schmidt, Rolf Pfeifer
2014	J	`jnl`	Spine as an engine: effect of spine morphology on spine-driven quadruped locomotion. Adv. Robotics Qian Zhao, Hidenobu Sumioka, Kohei Nakajima, Xiaoxiang Yu, Rolf Pfeifer
2014	J	`jnl`	Symbolic local information transfer. CoRR Kohei Nakajima, Taichi Haruna
2013	J	`jnl`	A soft body as a reservoir: case studies in a dynamic model of octopus-inspired soft robotic arm. Frontiers Comput. Neurosci. Kohei Nakajima, Helmut Hauser, Rongjie Kang, Emanuele Guglielmino, Darwin G. Caldwell, Rolf Pfeifer
2013	J	`jnl`	Bootstrapping Perception using Information Theory: Case Studies in a quadruped Robot Running on Different grounds. Adv. Complex Syst. Nico M. Schmidt, Matej Hoffmann, Kohei Nakajima, Rolf Pfeifer
2013	A*	`conf`	Computing with a muscular-hydrostat system. ICRA Kohei Nakajima, Helmut Hauser, Rongjie Kang, Emanuele Guglielmino, Darwin G. Caldwell, Rolf Pfeifer
2013	A*	`conf`	Online learning for behavior switching in a soft robotic arm. ICRA Tao Li, Kohei Nakajima, Rolf Pfeifer
2013	J	`jnl`	Permutation Complexity and Coupling Measures in Hidden Markov Models. Entropy Taichi Haruna, Kohei Nakajima
2013	J	`jnl`	Self-Organized Translational Wheeling Motion in Stochastic Self-Assembling Modules. Artif. Life Shuhei Miyashita, Kohei Nakajima, Zoltán Nagy, Rolf Pfeifer
2013	A	`conf`	Spine dynamics as a computational resource in spine-driven quadruped locomotion. IROS Qian Zhao, Kohei Nakajima, Hidenobu Sumioka, Helmut Hauser, Rolf Pfeifer
2012	A*	`conf`	Behavior switching using reservoir computing for a soft robotic arm. ICRA Tao Li, Kohei Nakajima, Matteo Cianchetti, Cecilia Laschi, Rolf Pfeifer
2012	A	`conf`	Embodiment enables the spinal engine in quadruped robot locomotion. IROS Qian Zhao, Kohei Nakajima, Hidenobu Sumioka, Xiaoxiang Yu, Rolf Pfeifer
2012	—	`conf`	Local information transfer in soft robotic arm. ROBIO Kohei Nakajima, Tao Li, Rongjie Kang, Emanuele Guglielmino, Darwin G. Caldwell, Rolf Pfeifer
2012	J	`jnl`	Permutation Complexity and Coupling Measures in Hidden Markov Models CoRR Taichi Haruna, Kohei Nakajima
2012	—	`conf`	The function of the spine and its morphological effect in quadruped robot locomotion. ROBIO Qian Zhao, Hidenobu Sumioka, Xiaoxiang Yu, Kohei Nakajima, Zhimin Wang, Rolf Pfeifer
2012	B	`conf`	Timing-based control via echo state network for soft robotic arm. IJCNN Junichi Kuwabara, Kohei Nakajima, Rongjie Kang, David T. Branson, Emanuele Guglielmino, Darwin G. Caldwell, Rolf Pfeifer
2011	—	`ch.`	Basic Problems in Self-Assembling Robots and a Case Study of Segregation on Tribolon Platform. Bio-Inspired Self-Organizing Robotic Systems Shuhei Miyashita, Aubery Marchel Tientcheu Ngouabeu, Rudolf M. Füchslin, Kohei Nakajima, Christof Audretsch, Rolf Pfeifer
2011	—	`conf`	Biologically inspired control of a simulated octopus ARM via recurrent neural networks. GECCO (Companion) Kohei Nakajima, Tao Li, Naveen Kuppuswamy, Rolf Pfeifer
2011	—	`conf`	Harnessing the dynamics of a soft body with "timing": Octopus inspired control via recurrent neural networks. ICAR Kohei Nakajima, Tao Li, Naveen Kuppuswamy, Rolf Pfeifer
2011	—	`conf`	How to Harness the Dynamics of Soft Body: Timing Based Control of a Simulated Octopus Arm via Recurrent Neural Networks. FET Kohei Nakajima, Tao Li, Naveen Kuppuswamy, Rolf Pfeifer
2011	—	`conf`	Information theoretic analysis on a soft robotic arm inspired by the octopus. ROBIO Kohei Nakajima, Tao Li, Hidenobu Sumioka, Matteo Cianchetti, Rolf Pfeifer
2011	J	`jnl`	Permutation Complexity via Duality between Values and Orderings CoRR Taichi Haruna, Kohei Nakajima
2011	J	`jnl`	Permutation Excess Entropy and Mutual Information between the Past and Future CoRR Taichi Haruna, Kohei Nakajima
2011	J	`jnl`	Self-organized perturbations enhance class IV behavior and 1/f power spectrum in elementary cellular automata. Biosyst. Kohei Nakajima, Taichi Haruna
2011	J	`jnl`	Symbolic transfer entropy rate is CoRR Taichi Haruna, Kohei Nakajima
2010	J	`jnl`	Dynamical Systems Interpretation of Reversal of Subjective Temporal Order Due to Arm Crossing. Adapt. Behav. Kohei Nakajima, Takashi Ikegami
2010	C	`conf`	Self-organized Segregation Effect on Water Based Self-Assembling Robots. ALIFE Aubery Marchel Tientcheu Ngouabeu, Shuhei Miyashita, Rudolf M. Füchslin, Kohei Nakajima, Maurice Göldi, Rolf Pfeifer
2009	—	`conf`	Embodiment of the Game of Life. ECAL (1) Kohei Nakajima, Taichi Haruna
2008	C	`conf`	Considering the reconfiguration process of subjective temporal order by using recurrent neural networks. ALIFE Kohei Nakajima, Takashi Ikegami
2008	—	`ch.`	Interoperation between Atomic Energy Grid Infrastructure (AEGIS) and Other Grids. High Performance Computing on Vector Systems Yoshio Suzuki, Noriyuki Kushida, Naoya Teshima, Kohei Nakajima, Akemi Nishida, Norihiro Nakajima
2007	—	`conf`	Formal Model of Embodiment on Abstract Systems: From Hierarchy to Heterarchy. ECAL Kohei Nakajima, Soya Shinkai, Takashi Ikegami
2007	—	`conf`	The Construction of Observational Heterarchy on One-Dimensional Map System. BIOCOMP Kohei Nakajima, Soya Shinkai