Kohei Nakajima

Publication Activity (10 Years)

Years Active: 2007-2024
Publications (10 Years): 53

Top Topics

Reservoir Computing

Recurrent Neural Networks

Biologically Plausible

Top Venues

IEEE Robotics Autom. Lett.

Publications

Kai Hu, Qian Wang, Tian Shi, Kohei Nakajima, Yongping Pan
Memory Regressor Extended Echo State Networks for Nonlinear Dynamics Modeling. ECC (2024)
Yuichiro Terasaki, Kohei Nakajima
Thermodynamic limit in learning period three. CoRR (2024)
Tempei Kabayama, Yasuo Kuniyoshi, Kazuyuki Aihara, Kohei Nakajima
Designing Chaotic Attractors: A Semi-supervised Approach. CoRR (2024)
Shuhong Liu, Nozomi Akashi, Qingyao Huang, Yasuo Kuniyoshi, Kohei Nakajima
Exploiting Chaotic Dynamics as Deep Neural Networks. CoRR (2024)
Taichi Haruna, Kohei Nakajima
Generalized multiplicative stochastic processes arising from one-dimensional maps with noise. Artif. Life Robotics 28 (1) (2023)
Thomas Geert de Jong, Nozomi Akashi, Tomohiro Taniguchi, Hirofumi Notsu, Kohei Nakajima
Virtual reservoir acceleration for CPU and GPU: Case study for coupled spin-torque oscillator reservoir. CoRR (2023)
Sumito Tsunegi, Tomoyuki Kubota, Akira Kamimaki, Julie Grollier, Vincent Cros, Kay Yakushiji, Akio Fukushima, Shinji Yuasa, Hitoshi Kubota, Kohei Nakajima, Tomohiro Taniguchi
Information Processing Capacity of Spintronic Oscillator. Adv. Intell. Syst. 5 (9) (2023)
Mitsumasa Nakajima, Kenji Tanaka, Katsuma Inoue, Kohei Nakajima, Toshikazu Hashimoto
Densely Parallelized Photonic Tensor Processor on Hybrid Waveguide/Free-Space-Optics. PSC (2023)
Nozomi Akashi, Yasuo Kuniyoshi, Taketomo Jo, Mitsuhiro Nishida, Ryo Sakurai, Yasumichi Wakao, Kohei Nakajima
Embedding bifurcations into pneumatic artificial muscle. CoRR (2023)
Kazashi Nakano, Megu Gunji, Masahiro Ikeda, Keung Or, Mitsuhito Ando, Katsuma Inoue, Hiromi Mochiyama, Kohei Nakajima, Ryuma Niiyama, Yasuo Kuniyoshi
"RobOstrich" Manipulator: A Novel Mechanical Design and Control Based on the Anatomy and Behavior of an Ostrich Neck. IEEE Robotics Autom. Lett. 8 (5) (2023)
Kazutoshi Tanaka, Yuji Tokudome, Yuna Minami, Satoko Honda, Toshiki Nakajima, Kuniharu Takei, Kohei Nakajima
Self-Organization of Remote Reservoirs: Transferring Computation to Spatially Distant Locations. Adv. Intell. Syst. 4 (3) (2022)
Megumi Akai-Kasaya, Yuki Takeshima, Shaohua Kan, Kohei Nakajima, Takahide Oya, Tetsuya Asai
Performance of reservoir computing in a random network of single-walled carbon nanotubes complexed with polyoxometalate. Neuromorph. Comput. Eng. 2 (1) (2022)
Nozomi Akashi, Yasuo Kuniyoshi, Sumito Tsunegi, Tomohiro Taniguchi, Mitsuhiro Nishida, Ryo Sakurai, Yasumichi Wakao, Kenji Kawashima, Kohei Nakajima
A Coupled Spintronics Neuromorphic Approach for High-Performance Reservoir Computing. Adv. Intell. Syst. 4 (10) (2022)
Mitsuhiro Nishida, Ryo Sakurai, Yasumichi Wakao, Kohei Nakajima
Pre-training on physical dynamics enhances indirect sensing in recurrent neural networks. MHS (2022)
Wentao Sun, Nozomi Akashi, Yasuo Kuniyoshi, Kohei Nakajima
Physics-Informed Recurrent Neural Networks for Soft Pneumatic Actuators. IEEE Robotics Autom. Lett. 7 (3) (2022)
Ryo Terajima, Katsuma Inoue, Shogo Yonekura, Kohei Nakajima, Yasuo Kuniyoshi
Behavioral Diversity Generated From Body-Environment Interactions in a Simulated Tensegrity Robot. IEEE Robotics Autom. Lett. 7 (2) (2022)
Katsushi Kagaya, Bowei Yu, Yuna Minami, Kohei Nakajima
Echo state property and memory in octopus-inspired soft robotic arm. RoboSoft (2022)
Yansong Li, Kai Hu, Kohei Nakajima, Yongping Pan
Composite FORCE learning of chaotic echo state networks for time-series prediction. CoRR (2022)
Mitsumasa Nakajima, Katsuma Inoue, Kenji Tanaka, Yasuo Kuniyoshi, Toshikazu Hashimoto, Kohei Nakajima
Physical Deep Learning with Biologically Plausible Training Method. CoRR (2022)
Kazutoshi Tanaka, Yuna Minami, Yuji Tokudome, Katsuma Inoue, Yasuo Kuniyoshi, Kohei Nakajima
Continuum-Body-Pose Estimation From Partial Sensor Information Using Recurrent Neural Networks. IEEE Robotics Autom. Lett. 7 (4) (2022)
Ryo Sakurai, Mitsuhiro Nishida, Taketomo Jo, Yasumichi Wakao, Kohei Nakajima
Durable Pneumatic Artificial Muscles with Electric Conductivity for Reliable Physical Reservoir Computing. J. Robotics Mechatronics 34 (2) (2022)
Quoc-Hoan Tran, Sanjib Ghosh, Kohei Nakajima
Quantum-Classical Hybrid Information Processing via a Single Quantum System. CoRR (2022)
Tomoyuki Kubota, Yudai Suzuki, Shumpei Kobayashi, Quoc-Hoan Tran, Naoki Yamamoto, Kohei Nakajima
Quantum Noise-Induced Reservoir Computing. CoRR (2022)
Wentao Sun, Nozomi Akashi, Yasuo Kuniyoshi, Kohei Nakajima
Self-Organization of Physics-Informed Mechanisms in Recurrent Neural Networks: A Case Study in Pneumatic Artificial Muscles. RoboSoft (2022)
Koichi Suzumori, Ryuma Niiyama, Kenjiro Fukuda, Kohei Nakajima
Special Issue on Science of Soft Robots. J. Robotics Mechatronics 34 (2) (2022)
Wentao Sun, Nozomi Akashi, Yasuo Kuniyoshi, Kohei Nakajima
Physics-informed reservoir computing with autonomously switching readouts: a case study in pneumatic artificial muscles. MHS (2021)
Kazutoshi Tanaka, Shih-Hsin Yang, Yuji Tokudome, Yuna Minami, Yuyao Lu, Takayuki Arie, Seiji Akita, Kuniharu Takei, Kohei Nakajima
Flapping-Wing Dynamics as a Natural Detector of Wind Direction. Adv. Intell. Syst. 3 (2) (2021)
Katsuma Inoue, Soh Ohara, Yasuo Kuniyoshi, Kohei Nakajima
Transient Chaos in BERT. CoRR (2021)
Quoc-Hoan Tran, Kohei Nakajima
Learning Temporal Quantum Tomography. CoRR (2021)
Yuta Horii, Katsuma Inoue, Satoshi Nishikawa, Kohei Nakajima, Ryuma Niiyama, Yasuo Kuniyoshi
Physical reservoir computing in a soft swimming robot. ALIFE (2021)
Yasumichi Wakao, Ryo Sakurai, Hajime Kitano, Kohei Nakajima
Object Recognition Using the Deformation Dynamics of Polyurethane Foam. MHS (2021)
Sana Oshino, Rie Nishihama, Kota Wakamatsu, Katsuma Inoue, Daisuke Matsui, Manabu Okui, Kohei Nakajima, Yasuo Kuniyoshi, Taro Nakamura
Generalization Capability of Mixture Estimation Model for Peristaltic Continuous Mixing Conveyor. IEEE Access 9 (2021)
Mizuka Komatsu, Takaharu Yaguchi, Kohei Nakajima
Algebraic approach towards the exploitation of "softness": the input-output equation for morphological computation. Int. J. Robotics Res. 40 (1) (2021)
Ruihong Wu, Kohei Nakajima, Yongping Pan
Performance Improvement of FORCE Learning for Chaotic Echo State Networks. ICONIP (2) (2021)
Hidenobu Sumioka, Kohei Nakajima, Kurima Sakai, Takashi Minato, Masahiro Shiomi
Wearable Tactile Sensor Suit for Natural Body Dynamics Extraction: Case Study on Posture Prediction Based on Physical Reservoir Computing. IROS (2021)
Quoc-Hoan Tran, Kohei Nakajima
Higher-Order Quantum Reservoir Computing. CoRR (2020)
Katsuma Inoue, Kohei Nakajima, Yasuo Kuniyoshi
Designing spontaneous behavioral switching via chaotic itinerancy. CoRR (2020)
Takahiro Goto, Quoc-Hoan Tran, Kohei Nakajima
Universal Approximation Property of Quantum Feature Map. CoRR (2020)
Kota Wakamatsu, Katsuma Inoue, D. Hagiwara, H. Adachi, Daisuke Matsui, Shunichi Kurumaya, Rie Nishihama, Manabu Okui, Kohei Nakajima, Yasuo Kuniyoshi, Taro Nakamura
Mixing State Estimation of Peristaltic Continuous Mixing Conveyor with Distributed Sensing System Based on Soft Intestine Motion. RoboSoft (2020)
Kohei Nakajima
Physical reservoir computing - An introductory perspective. CoRR (2020)
Gabor Soter, Helmut Hauser, Andrew Conn, Jonathan Rossiter, Kohei Nakajima
Shape reconstruction of CCD camera-based soft tactile sensors. IROS (2020)
Ryo Sakurai, Mitsuhiro Nishida, Hideyuki Sakurai, Yasumichi Wakao, Nozomi Akashi, Yasuo Kuniyoshi, Yuna Minami, Kohei Nakajima
Emulating a sensor using soft material dynamics: A reservoir computing approach to pneumatic artificial muscle. RoboSoft (2020)
Katsuma Inoue, Kohei Nakajima, Yasuo Kuniyoshi
Soft bodies as input reservoir: role of softness from the viewpoint of reservoir computing. MHS (2019)
Estefany A. Torres, Kohei Nakajima, Isuru S. Godage
Information Processing Capability of Soft Continuum Arms. RoboSoft (2019)
Nozomi Akashi, Kohei Nakajima, Yasuo Kuniyoshi
Unpredictable as dice: analyzing riddled basin structures in a passive dynamic walker. MHS (2019)
Tomoyuki Kubota, Kohei Nakajima, Hirokazu Takahashi
Dynamical Anatomy of NARMA10 Benchmark Task. CoRR (2019)
Taichi Haruna, Kohei Nakajima
Optimal short-term memory before the edge of chaos in driven random recurrent networks. CoRR (2019)
Tomoyuki Kubota, Kohei Nakajima, Hirokazu Takahashi
Echo State Property of Neuronal Cell Cultures. ICANN (Workshop) (2019)
Estefany A. Torres, Kohei Nakajima, Isuru S. Godage
Information Processing Capability of Soft Continuum Arms. CoRR (2018)
Yuki Yamanaka, Takaharu Yaguchi, Kohei Nakajima, Helmut Hauser
Mass-Spring Damper Array as a Mechanical Medium for Computation. ICANN (3) (2018)
Tomoyuki Kubota, Kohei Nakajima, Hirokazu Takahashi
Information processing using a single Izhikevich neuron. ALIFE (2018)
Hisashi Iwade, Kohei Nakajima, Takuma Tanaka, Toshio Aoyagi
Use of recurrent infomax to improve the memory capability of input-driven recurrent neural networks. CoRR (2018)
Keisuke Fujii, Kohei Nakajima
Harnessing disordered quantum dynamics for machine learning. CoRR (2016)
Qian Zhao, Hidenobu Sumioka, Kohei Nakajima, Xiaoxiang Yu, Rolf Pfeifer
Spine as an engine: effect of spine morphology on spine-driven quadruped locomotion. Adv. Robotics 28 (6) (2014)
Kohei Nakajima, Tao Li, Helmut Hauser, Rolf Pfeifer
Exploiting short-term memory in soft body dynamics as a computational resource. CoRR (2014)
Kohei Nakajima, Nico M. Schmidt, Rolf Pfeifer
Measuring information transfer in a soft robotic arm. CoRR (2014)
Kohei Nakajima, Taichi Haruna
Symbolic local information transfer. CoRR (2014)
Kohei Nakajima
Dynamics Underneath Symbols: A Case Study in Autonomous Agents. CoRR (2014)
Nico M. Schmidt, Matej Hoffmann, Kohei Nakajima, Rolf Pfeifer
Bootstrapping Perception using Information Theory: Case Studies in a quadruped Robot Running on Different grounds. Adv. Complex Syst. 16 (2-3) (2013)
Taichi Haruna, Kohei Nakajima
Permutation Complexity and Coupling Measures in Hidden Markov Models. Entropy 15 (9) (2013)
Shuhei Miyashita, Kohei Nakajima, Zoltán Nagy, Rolf Pfeifer
Self-Organized Translational Wheeling Motion in Stochastic Self-Assembling Modules. Artif. Life 19 (1) (2013)
Qian Zhao, Kohei Nakajima, Hidenobu Sumioka, Helmut Hauser, Rolf Pfeifer
Spine dynamics as a computational resource in spine-driven quadruped locomotion. IROS (2013)
Kohei Nakajima, Helmut Hauser, Rongjie Kang, Emanuele Guglielmino, Darwin G. Caldwell, Rolf Pfeifer
A soft body as a reservoir: case studies in a dynamic model of octopus-inspired soft robotic arm. Frontiers Comput. Neurosci. 7 (2013)
Kohei Nakajima, Helmut Hauser, Rongjie Kang, Emanuele Guglielmino, Darwin G. Caldwell, Rolf Pfeifer
Computing with a muscular-hydrostat system. ICRA (2013)
Tao Li, Kohei Nakajima, Rolf Pfeifer
Online learning for behavior switching in a soft robotic arm. ICRA (2013)
Tao Li, Kohei Nakajima, Matteo Cianchetti, Cecilia Laschi, Rolf Pfeifer
Behavior switching using reservoir computing for a soft robotic arm. ICRA (2012)
Kohei Nakajima, Tao Li, Rongjie Kang, Emanuele Guglielmino, Darwin G. Caldwell, Rolf Pfeifer
Local information transfer in soft robotic arm. ROBIO (2012)
Junichi Kuwabara, Kohei Nakajima, Rongjie Kang, David T. Branson, Emanuele Guglielmino, Darwin G. Caldwell, Rolf Pfeifer
Timing-based control via echo state network for soft robotic arm. IJCNN (2012)
Taichi Haruna, Kohei Nakajima
Permutation Complexity and Coupling Measures in Hidden Markov Models CoRR (2012)
Qian Zhao, Kohei Nakajima, Hidenobu Sumioka, Xiaoxiang Yu, Rolf Pfeifer
Embodiment enables the spinal engine in quadruped robot locomotion. IROS (2012)
Qian Zhao, Hidenobu Sumioka, Xiaoxiang Yu, Kohei Nakajima, Zhimin Wang, Rolf Pfeifer
The function of the spine and its morphological effect in quadruped robot locomotion. ROBIO (2012)
Kohei Nakajima, Tao Li, Naveen Kuppuswamy, Rolf Pfeifer
Biologically inspired control of a simulated octopus ARM via recurrent neural networks. GECCO (Companion) (2011)
Kohei Nakajima, Tao Li, Naveen Kuppuswamy, Rolf Pfeifer
How to Harness the Dynamics of Soft Body: Timing Based Control of a Simulated Octopus Arm via Recurrent Neural Networks. FET (2011)
Kohei Nakajima, Taichi Haruna
Self-organized perturbations enhance class IV behavior and 1/f power spectrum in elementary cellular automata. Biosyst. 105 (3) (2011)
Taichi Haruna, Kohei Nakajima
Permutation Complexity via Duality between Values and Orderings CoRR (2011)
Kohei Nakajima, Tao Li, Hidenobu Sumioka, Matteo Cianchetti, Rolf Pfeifer
Information theoretic analysis on a soft robotic arm inspired by the octopus. ROBIO (2011)
Kohei Nakajima, Tao Li, Naveen Kuppuswamy, Rolf Pfeifer
Harnessing the dynamics of a soft body with "timing": Octopus inspired control via recurrent neural networks. ICAR (2011)
Taichi Haruna, Kohei Nakajima
Permutation Excess Entropy and Mutual Information between the Past and Future CoRR (2011)
Taichi Haruna, Kohei Nakajima
Symbolic transfer entropy rate is CoRR (2011)
Aubery Marchel Tientcheu Ngouabeu, Shuhei Miyashita, Rudolf M. Füchslin, Kohei Nakajima, Maurice Göldi, Rolf Pfeifer
Self-organized Segregation Effect on Water Based Self-Assembling Robots. ALIFE (2010)
Kohei Nakajima, Takashi Ikegami
Dynamical Systems Interpretation of Reversal of Subjective Temporal Order Due to Arm Crossing. Adapt. Behav. 18 (3-4) (2010)
Kohei Nakajima, Taichi Haruna
Embodiment of the Game of Life. ECAL (1) (2009)
Kohei Nakajima, Takashi Ikegami
Considering the reconfiguration process of subjective temporal order by using recurrent neural networks. ALIFE (2008)
Kohei Nakajima, Soya Shinkai
The Construction of Observational Heterarchy on One-Dimensional Map System. BIOCOMP (2007)
Kohei Nakajima, Soya Shinkai, Takashi Ikegami
Formal Model of Embodiment on Abstract Systems: From Hierarchy to Heterarchy. ECAL (2007)