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OHKUBO Jun
| Mathematics, Electronics and Informatics Division | Professor |
| Department of Information and Computer Sciences |
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Researcher information
■ Degree■ Research Keyword
■ Field Of Study
- Informatics, Soft computing
- Natural sciences, Bio-, chemical, and soft-matter physics
- Natural sciences, Mathematical physics and basic theory
- Informatics, Information theory
- Apr. 2022 - Present, Saitama University, Graduate School of Science and Engineering, Professor
- Oct. 2018 - Mar. 2022
- May 2015 - Mar. 2022, Saitama University, Graduate School of Science and Engineering, Associate Professor
- May 2010 - Apr. 2015, Kyoto University, Graduate School of Informatics, Lecturer
- Apr. 2007 - Apr. 2010, The university of Tokyo, The Institute for Solid State Physics, Research Associate
- Apr. 2005 - Mar. 2007, Tohoku University, Graduate School of Information Sciences, (Ph.D. course) Dept. of System Information Sciences, Japan
- Apr. 2004 - Mar. 2005, Tohoku University, Graduate School of Information Sciences, (Master course) Dept. of Computer and Mathematical Sciences, Japan
- Apr. 2000 - Mar. 2004, Tohoku University, College of Sciences, Dept. of Chemistry, Japan
Performance information
■ Paper- Koopman Analysis of Combinatorial Optimization Problems with Replica Exchange Monte Carlo Method
Tatsuya Naoi; Tatsuya Kishimoto; Jun Ohkubo
Journal of the Physical Society of Japan, Volume：94, Number：2, First page：024801-1, Last page：024801-8, Feb. 2025, [Reviewed], [Last, Corresponding]
Physical Society of Japan, English, Scientific journal
DOI：https://doi.org/10.7566/jpsj.94.024801
DOI ID：10.7566/jpsj.94.024801, ISSN：0031-9015, eISSN：1347-4073, 共同研究・競争的資金等ID：36619934 - Aspects of Importance Sampling in Parameter Selection for Neural Networks Using Ridgelet Transform
Hikaru Homma; Jun Ohkubo
Journal of the Physical Society of Japan, Volume：93, Number：12, First page：124001-1, Last page：124001-6, Dec. 2024, [Reviewed], [Last, Corresponding]
Physical Society of Japan, English, Scientific journal
DOI：https://doi.org/10.7566/jpsj.93.124001
DOI ID：10.7566/jpsj.93.124001, ISSN：0031-9015, eISSN：1347-4073, 共同研究・競争的資金等ID：35825151 - Compression of the Koopman matrix for nonlinear physical models via hierarchical clustering
Tomoya Nishikata; Jun Ohkubo
Nonlinear Theory and Its Applications, IEICE, Volume：15, Number：4, First page：938, Last page：953, Oct. 2024, [Reviewed], [Last, Corresponding]
Institute of Electronics, Information and Communications Engineers (IEICE), English, Scientific journal
DOI：https://doi.org/10.1587/nolta.15.938
DOI ID：10.1587/nolta.15.938, eISSN：2185-4106, 共同研究・競争的資金等ID：36619934 - Attention-enhanced reservoir computing
Felix Köster; Kazutaka Kanno; Jun Ohkubo; Atsushi Uchida
Physical Review Applied, Volume：22, Number：1, First page：014039-1, Last page：014039-12, Jul. 2024, [Reviewed]
American Physical Society (APS), English, Scientific journal
DOI：https://doi.org/10.1103/physrevapplied.22.014039
DOI ID：10.1103/physrevapplied.22.014039, eISSN：2331-7019, 共同研究・競争的資金等ID：43806931 - Improvement of System Identification of Stochastic Systems via Koopman Generator and Locally Weighted Expectation
Yuki Tahara; Kakutaro Fukushi; Shunta Takahashi; Kayo Kinjo; Jun Ohkubo
Journal of the Physical Society of Japan, Volume：93, Number：7, First page：073401-1, Last page：073401-9, Jul. 2024, [Reviewed], [Last, Corresponding]
Physical Society of Japan, English, Scientific journal
DOI：https://doi.org/10.7566/jpsj.93.074006
DOI ID：10.7566/jpsj.93.074006, ISSN：0031-9015, eISSN：1347-4073, 共同研究・競争的資金等ID：43806931 - Extraction of nonlinearity in neural networks with Koopman operator
Naoki Sugishita; Kayo Kinjo; Jun Ohkubo
Journal of Statistical Mechanics: Theory and Experiment, Volume：2024, Number：7, First page：073401-1, Last page：073401-22, Jul. 2024, [Reviewed], [Last, Corresponding]
IOP Publishing, English, Scientific journal
DOI：https://doi.org/10.1088/1742-5468/ad5713
DOI ID：10.1088/1742-5468/ad5713, eISSN：1742-5468, 共同研究・競争的資金等ID：36619934 - Characterization of Locality in Spin States and Forced Moves for Optimizations
Yoshiki Sato; Makiko Konoshima; Hirotaka Tamura; Jun Ohkubo
Journal of the Physical Society of Japan, Volume：93, Number：4, First page：044802-1, Last page：044802-7, Apr. 2024, [Reviewed], [Last, Corresponding]
Physical Society of Japan, English, Scientific journal
DOI：https://doi.org/10.7566/jpsj.93.044802
DOI ID：10.7566/jpsj.93.044802, ISSN：0031-9015, eISSN：1347-4073 - Redundant basis interpretation of Doi-Peliti method and an application
Shunta Takahashi; Jun Ohkubo
J. Stat. Phys., Volume：190, Number：10, First page：159-1, Last page：159-18, Oct. 2023, [Reviewed], [Last, Corresponding]
English, Scientific journal
DOI：https://doi.org/10.1007/s10955-023-03180-w
DOI ID：10.1007/s10955-023-03180-w, 共同研究・競争的資金等ID：36619934 - Embedding stochastic differential equations into neural networks via dual processes
Naoki Sugishita; Jun Ohkubo
Journal of Statistical Mechanics: Theory and Experiment, Volume：2023, Number：9, First page：093201-1, Last page：093201-15, Sep. 2023, [Reviewed], [Last, Corresponding]
Abstract
We propose a new approach to constructing a neural network for predicting expectations of stochastic differential equations. The proposed method does not need data sets of inputs and outputs; instead, the information obtained from the time-evolution equations, i.e. the corresponding dual process, is directly compared with the weights in the neural network. As a demonstration, we construct neural networks for the Ornstein–Uhlenbeck process and the noisy van der Pol system. The remarkable feature of learned networks with the proposed method is the accuracy of inputs near the origin. Hence, it would be possible to avoid the overfitting problem because the learned network does not depend on training data sets.
IOP Publishing, English, Scientific journal
DOI：https://doi.org/10.1088/1742-5468/acf126
DOI ID：10.1088/1742-5468/acf126, eISSN：1742-5468, 共同研究・競争的資金等ID：35825151 - Statistics for Stochastic Differential Equations and Approximations of Resolvent
Jun Ohkubo
Journal of the Physical Society of Japan, Volume：92, Number：7, First page：074006-1, Last page：074006-10, Jul. 2023, [Reviewed], [Lead, Corresponding]
Physical Society of Japan, English, Scientific journal
DOI：https://doi.org/10.7566/jpsj.92.074006
DOI ID：10.7566/jpsj.92.074006, ISSN：0031-9015, eISSN：1347-4073, 共同研究・競争的資金等ID：36619934 - Efficient Correlation-based Discretization of Continuous Variables for Annealing Machines
Yuki Furue; Makiko Konoshima; Hirotaka Tamura; Jun Ohkubo
Journal of the Physical Society of Japan, Volume：92, Number：4, First page：044802-1, Last page：044802-7, Apr. 2023, [Reviewed], [Last, Corresponding]
Physical Society of Japan, English, Scientific journal
DOI：https://doi.org/10.7566/jpsj.92.044802
DOI ID：10.7566/jpsj.92.044802, ISSN：0031-9015, eISSN：1347-4073 - Numerical methods to evaluate Koopman matrix from system equations
Jun Ohkubo
Journal of Physics A: Mathematical and Theoretical, Volume：55, Number：22, First page：224007-1, Last page：224007-20, May 2022, [Reviewed], [Lead, Corresponding]
Abstract
The Koopman operator is beneficial for analyzing nonlinear and stochastic dynamics; it is linear but infinite-dimensional, and it governs the evolution of observables. The extended dynamic mode decomposition (EDMD) is one of the famous methods in the Koopman operator approach. The EDMD employs a data set of snapshot pairs and a specific dictionary to evaluate an approximation for the Koopman operator, i.e., the Koopman matrix. In this study, we focus on stochastic differential equations, and a method to obtain the Koopman matrix is proposed. The proposed method does not need any data set, which employs the original system equations to evaluate some of the targeted elements of the Koopman matrix. The proposed method comprises combinatorics, an approximation of the resolvent, and extrapolations. Comparisons with the EDMD are performed for a noisy van der Pol system. The proposed method yields reasonable results even in cases wherein the EDMD exhibits a slow convergence behavior.
IOP Publishing, English, Scientific journal
DOI：https://doi.org/10.1088/1751-8121/ac663b
DOI ID：10.1088/1751-8121/ac663b, ISSN：1751-8113, eISSN：1751-8121, 共同研究・競争的資金等ID：35825151;24613319 - Connection among Stochastic Hamilton–Jacobi–Bellman Equation, Path-Integral, and Koopman Operator on Nonlinear Stochastic Optimal Control
Jun Ohkubo
Journal of the Physical Society of Japan, Volume：90, Number：10, First page：104802, Last page：104802, Oct. 2021, [Reviewed], [Lead, Corresponding]
Physical Society of Japan, Scientific journal
DOI：https://doi.org/10.7566/jpsj.90.104802
DOI ID：10.7566/jpsj.90.104802, ISSN：0031-9015, eISSN：1347-4073 - Semi-Supervised Learning Combining Backpropagation and STDP: STDP Enhances Learning by Backpropagation with a Small Amount of Labeled Data in a Spiking Neural Network
Kotaro Furuya; Jun Ohkubo
Journal of the Physical Society of Japan, Volume：90, Number：7, First page：074802, Last page：074802, Jul. 2021, [Reviewed], [Last]
Physical Society of Japan, Scientific journal
DOI：https://doi.org/10.7566/jpsj.90.074802
DOI ID：10.7566/jpsj.90.074802, ISSN：0031-9015, eISSN：1347-4073 - Water storage and drainage in perlite in container cultivation
Yuka Hasama; Yoshiaki Saito; Jun Ohkubo
SICE Journal of Control, Measurement, and System Integration, Volume：14, Number：2, First page：104, Last page：110, Jun. 2021, [Reviewed], [Last]
Informa UK Limited, Scientific journal
DOI：https://doi.org/10.1080/18824889.2021.1896642
DOI ID：10.1080/18824889.2021.1896642, ISSN：1882-4889, eISSN：1884-9970 - Combinatorics for calculating expectation values of functions in systems with evolution governed by stochastic differential equations
Jun Ohkubo
Journal of Statistical Mechanics: Theory and Experiment, Volume：2021, Number：1, First page：013401, Last page：013401, Jan. 2021, [Reviewed], [Lead, Corresponding]
IOP Publishing, English, Scientific journal
DOI：https://doi.org/10.1088/1742-5468/abd029
DOI ID：10.1088/1742-5468/abd029, eISSN：1742-5468, 共同研究・競争的資金等ID：24613319 - Making Birth–Death Processes from Backward Fokker–Planck Equations for Computing Expectations in Langevin Systems
Jun Ohkubo
J. Phys. Soc. Jpn., Volume：89, Number：4, First page：044004-1, Last page：044004-6, Apr. 2020, [Reviewed], [Lead, Corresponding]
English, Scientific journal
共同研究・競争的資金等ID：24613319 - Derivation of QUBO Formulations for Sparse Estimation
Tomohiro Yokota; Makiko Konoshima; Hirotaka Tamura; Jun Ohkubo
J. Phys. Soc. Jpn., Volume：89, Number：3, First page：034801-1, Last page：034801-5, Mar. 2020, [Reviewed], [Last, Corresponding]
English, Scientific journal - Duality in stochastic processes from the viewpoint of basis expansions
Jun Ohkubo; Yuuki Arai
Volume：2019, First page：063202-1, Last page：063202-13, Jun. 2019, [Reviewed], [Lead, Corresponding]
English, Scientific journal
DOI：https://doi.org/10.1088/1742-5468/ab1dd9
DOI ID：10.1088/1742-5468/ab1dd9 - Quadratic unconstrained binary optimization formulation for rectified-linear-unit-type functions
Go Sato; Makiko Konoshima; Takuya Ohwa; Hirotaka Tamura; Jun Ohkubo
Phys. Rev. E, Volume：99, Number：4, First page：042106-1, Last page：042106-5, Apr. 2019, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevE.99.042106
DOI ID：10.1103/PhysRevE.99.042106 - On dualities for SSEP and ASEP with open boundary conditions
J. Ohkubo
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Volume：50, Number：9, First page：095004-1, Last page：095004-21, Mar. 2017, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1088/1751-8121/aa56f8
DOI ID：10.1088/1751-8121/aa56f8, ISSN：1751-8113, eISSN：1751-8121, Web of Science ID：WOS:000395504300003 - Duality-based calculations for transition probabilities in stochastic chemical reactions
Jun Ohkubo
PHYSICAL REVIEW E, Volume：95, Number：2, First page：023304-1, Last page：023304-7, Feb. 2017, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevE.95.023304
DOI ID：10.1103/PhysRevE.95.023304, ISSN：2470-0045, eISSN：2470-0053, Web of Science ID：WOS:000402251400004 - Nonlinear Kalman filter based on duality relations between continuous and discrete-state stochastic processes
Jun Ohkubo
PHYSICAL REVIEW E, Volume：92, Number：4, First page：043302-1, Last page：043302-9, Oct. 2015, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevE.92.043302
DOI ID：10.1103/PhysRevE.92.043302, ISSN：2470-0045, eISSN：2470-0053, Web of Science ID：WOS:000362445700015 - Karlin-McGregor-like formula in a simple time-inhomogeneous birth-death process
Jun Ohkubo
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Volume：47, Number：40, First page：405001-1, Last page：405001-11, Oct. 2014, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1088/1751-8113/47/40/405001
DOI ID：10.1088/1751-8113/47/40/405001, ISSN：1751-8113, eISSN：1751-8121, Web of Science ID：WOS:000343240400003 - Lie Algebraic Discussions for Time-Inhomogeneous Linear Birth-Death Processes with Immigration
Jun Ohkubo
JOURNAL OF STATISTICAL PHYSICS, Volume：157, Number：2, First page：380, Last page：391, Oct. 2014, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1007/s10955-014-1068-x
DOI ID：10.1007/s10955-014-1068-x, ISSN：0022-4715, eISSN：1572-9613, Web of Science ID：WOS:000341710800010 - Basics of Counting Statistics
Jun Ohkubo
IEICE TRANSACTIONS ON COMMUNICATIONS, Volume：E96B, Number：11, First page：2733, Last page：2740, Nov. 2013, [Reviewed], [Invited]
English, Scientific journal
DOI：https://doi.org/10.1587/transcom.E96.B.2733
DOI ID：10.1587/transcom.E96.B.2733, ISSN：0916-8516, eISSN：1745-1345, CiNii Articles ID：130003385116, Web of Science ID：WOS:000327168100004 - Extended duality relations between birth-death processes and partial differential equations
Jun Ohkubo
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Volume：46, Number：37, First page：375004-1, Last page：375004-11, Sep. 2013, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1088/1751-8113/46/37/375004
DOI ID：10.1088/1751-8113/46/37/375004, ISSN：1751-8113, Web of Science ID：WOS:000324071400005 - Algebraic Probability, Classical Stochastic Processes, and Counting Statistics
Jun Ohkubo
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：82, Number：8, First page：084001-1, Last page：084001-7, Aug. 2013, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.7566/JPSJ.82.084001
DOI ID：10.7566/JPSJ.82.084001, ISSN：0031-9015, Web of Science ID：WOS:000322374300017 - Noncyclic geometric phase in counting statistics and its role as an excess contribution
Jun Ohkubo
Journal of Physics A: Mathematical and Theoretical, Volume：46, Number：28, First page：285001-1, Last page：285001-12, Jul. 2013, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1088/1751-8113/46/28/285001
DOI ID：10.1088/1751-8113/46/28/285001, ISSN：1751-8113, J-Global ID：201302225888380171, CiNii Articles ID：120005307059, SCOPUS ID：84879896789 - One-parameter extension of the Doi-Peliti formalism and its relation with orthogonal polynomials
Jun Ohkubo
PHYSICAL REVIEW E, Volume：86, Number：4, First page：042102-1, Last page：042102-4, Oct. 2012, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevE.86.042102
DOI ID：10.1103/PhysRevE.86.042102, ISSN：1539-3755, CiNii Articles ID：120004945140, PubMed ID：23214630, Web of Science ID：WOS:000310196800003 - Counting statistics for genetic switches based on effective interaction approximation
Jun Ohkubo
JOURNAL OF CHEMICAL PHYSICS, Volume：137, Number：12, First page：125102-1, Last page：125102-6, Sep. 2012, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1063/1.4754537
DOI ID：10.1063/1.4754537, ISSN：0021-9606, CiNii Articles ID：120004873983, PubMed ID：23020350, Web of Science ID：WOS:000309428500034 - Nonparametric model reconstruction for stochastic differential equations from discretely observed time-series data
Jun Ohkubo
PHYSICAL REVIEW E, Volume：84, Number：6, First page：066702-1, Last page：066702-9, Dec. 2011, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevE.84.066702
DOI ID：10.1103/PhysRevE.84.066702, ISSN：1539-3755, CiNii Articles ID：120003779166, PubMed ID：22304215, Web of Science ID：WOS:000298139000008 - Approximation scheme based on effective interactions for stochastic gene regulation
Jun Ohkubo
PHYSICAL REVIEW E, Volume：83, Number：4, First page：041915-1, Last page：041915-9, Apr. 2011, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevE.83.041915
DOI ID：10.1103/PhysRevE.83.041915, ISSN：1539-3755, CiNii Articles ID：120003338851, PubMed ID：21599208, Web of Science ID：WOS:000290116100008 - Long-tail behavior in locomotion of Caenorhabditis elegans
Jun Ohkubo; Kazushi Yoshida; Yuichi Iino; Naoki Masuda
JOURNAL OF THEORETICAL BIOLOGY, Volume：267, Number：2, First page：213, Last page：222, Nov. 2010, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1016/j.jtbi.2010.08.020
DOI ID：10.1016/j.jtbi.2010.08.020, ISSN：0022-5193, eISSN：1095-8541, Web of Science ID：WOS:000283334100009 - Noncyclic and nonadiabatic geometric phase for counting statistics
Jun Ohkubo; Thomas Eggel
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Volume：43, Number：42, First page：425001-1, Last page：425001-11, Oct. 2010, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1088/1751-8113/43/42/425001
DOI ID：10.1088/1751-8113/43/42/425001, ISSN：1751-8113, Web of Science ID：WOS:000282518000001 - A direct numerical method for obtaining the counting statistics for stochastic processes
Jun Ohkubo; Thomas Eggel
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT, Volume：2010, Number：6, First page：P06013-1, Last page：P06013-9, Jun. 2010, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1088/1742-5468/2010/06/P06013
DOI ID：10.1088/1742-5468/2010/06/P06013, ISSN：1742-5468, Web of Science ID：WOS:000281744100018 - Duality in Interacting Particle Systems and Boson Representation
Jun Ohkubo
JOURNAL OF STATISTICAL PHYSICS, Volume：139, Number：3, First page：454, Last page：465, May 2010, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1007/s10955-009-9910-2
DOI ID：10.1007/s10955-009-9910-2, ISSN：0022-4715, Web of Science ID：WOS:000276511500006 - Two Langevin equations in the Doi-Peliti formalism
Kazunori Itakura; Jun Ohkubo; Shin-ichi Sasa
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Volume：43, Number：12, First page：125001-1, Last page：125001-12, Mar. 2010, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1088/1751-8113/43/12/125001
DOI ID：10.1088/1751-8113/43/12/125001, ISSN：1751-8113, Web of Science ID：WOS:000275302300003 - Posterior Probability and Fluctuation Theorem in Stochastic Processes
Jun Ohkubo
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：78, Number：12, First page：123001-1, Last page：123001-4, Dec. 2009, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1143/JPSJ.78.123001
DOI ID：10.1143/JPSJ.78.123001, ISSN：0031-9015, Web of Science ID：WOS:000272985600001 - Variational principle of counting statistics in master equations
Jun Ohkubo
PHYSICAL REVIEW E, Volume：80, Number：1, First page：012101-1, Last page：012101-4, Jul. 2009, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevE.80.012101
DOI ID：10.1103/PhysRevE.80.012101, ISSN：1539-3755, Web of Science ID：WOS:000268616300115 - Current and fluctuation in a two-state stochastic system under nonadiabatic periodic perturbation
Jun Ohkubo
JOURNAL OF CHEMICAL PHYSICS, Volume：129, Number：20, First page：205102-1, Last page：205102-6, Nov. 2008, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1063/1.3026510
DOI ID：10.1063/1.3026510, ISSN：0021-9606, Web of Science ID：WOS:000262607100038 - Power-law behavior and condensation phenomena in disordered urn models
Jun-ichi Inoue; Jun Ohkubo
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Volume：41, Number：32, First page：324020-1, Last page：324020-14, Aug. 2008, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1088/1751-8113/41/32/324020
DOI ID：10.1088/1751-8113/41/32/324020, ISSN：1751-8113, eISSN：1751-8121, Web of Science ID：WOS:000258023900022 - Approximation scheme for master equations: Variational approach to multivariate case
Jun Ohkubo
JOURNAL OF CHEMICAL PHYSICS, Volume：129, Number：4, First page：044108-1, Last page：044108-8, Jul. 2008, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1063/1.2957462
DOI ID：10.1063/1.2957462, ISSN：0021-9606, Web of Science ID：WOS:000258171500013 - Hannay angle and geometric phase shifts under adiabatic parameter changes in classical dissipative systems
N. A. Sinitsyn; J. Ohkubo
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Volume：41, Number：26, First page：262002-1, Last page：262002-4, Jul. 2008, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1088/1751-8113/41/26/262002
DOI ID：10.1088/1751-8113/41/26/262002, ISSN：1751-8113, Web of Science ID：WOS:000256694000002 - Transition phenomena induced by internal noise and quasi-absorbing state
Jun Ohkubo; Nadav Shnerb; David A. Kessler
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：77, Number：4, First page：044002-1, Last page：044002-5, Apr. 2008, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1143/JPSJ.77.044002
DOI ID：10.1143/JPSJ.77.044002, ISSN：0031-9015, Web of Science ID：WOS:000255110900012 - The stochastic pump current and the non-adiabatic geometrical phase
Jun Ohkubo
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT, Volume：2008, Number：2, First page：P02011-1, Last page：P02011-12, Feb. 2008, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1088/1742-5468/2008/02/P02011
DOI ID：10.1088/1742-5468/2008/02/P02011, ISSN：1742-5468, Web of Science ID：WOS:000254376400008 - Condensation phenomena with distinguishable particles
Jun Ohkubo
PHYSICAL REVIEW E, Volume：76, Number：5, First page：051108-1, Last page：051108-6, Nov. 2007, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevE.76.051108
DOI ID：10.1103/PhysRevE.76.051108, ISSN：1539-3755, Web of Science ID：WOS:000251326100015 - A field theoretic approach to master equations and a variational method beyond the Poisson ansatz
Jun Ohkubo
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT, Volume：2007, Number：9, First page：P09017-1, Last page：P09017-13, Sep. 2007, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1088/1742-5468/2007/09/P09017
DOI ID：10.1088/1742-5468/2007/09/P09017, ISSN：1742-5468, Web of Science ID：WOS:000249982200019 - Free energy of disordered urn models in the canonical ensemble
Jun Ohkubo
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：76, Number：9, First page：095002-1, Last page：095002-2, Sep. 2007, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1143/JPSJ.76.095002
DOI ID：10.1143/JPSJ.76.095002, ISSN：0031-9015, Web of Science ID：WOS:000249723300035 - Nonadditive volume and community detection problem in complex networks
Jun Ohkubo; Kazuyuki Tanaka
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：75, Number：11, First page：115001-1, Last page：115001-2, Nov. 2006, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1143/JPSJ.75.115001
DOI ID：10.1143/JPSJ.75.115001, ISSN：0031-9015, Web of Science ID：WOS:000242210200050 - Replica analysis of preferential urn model
Jun Ohkubo; Muneki Yasuda; Kazuyuki Tanaka
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：75, Number：7, First page：074802-1, Last page：074802-6, Jul. 2006, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1143/JPSJ.75.074802
DOI ID：10.1143/JPSJ.75.074802, ISSN：0031-9015, Web of Science ID：WOS:000240212900041 - Preferential urn model and nongrowing complex networks
J Ohkubo; M Yasuda; K Tanaka
PHYSICAL REVIEW E, Volume：72, Number：6, First page：065104(R)-1, Last page：065104(R)-4, Dec. 2005, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevE.72.065104
DOI ID：10.1103/PhysRevE.72.065104, ISSN：1539-3755, Web of Science ID：WOS:000235065000004 - Statistical-mechanical iterative algorithms on complex networks
J Ohkubo; M Yasuda; K Tanaka
PHYSICAL REVIEW E, Volume：72, Number：4, First page：046135-1, Last page：046135-8, Oct. 2005, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevE.72.046135
DOI ID：10.1103/PhysRevE.72.046135, ISSN：2470-0045, eISSN：2470-0053, Web of Science ID：WOS:000232931200047 - Generation of complex bipartite graphs by using a preferential rewiring process
J Ohkubo; K Tanaka; T Horiguchi
PHYSICAL REVIEW E, Volume：72, Number：3, First page：036120-1, Last page：036120-10, Sep. 2005, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevE.72.036120
DOI ID：10.1103/PhysRevE.72.036120, ISSN：2470-0045, eISSN：2470-0053, Web of Science ID：WOS:000232227800028 - Scale-free property of optimal network for packet flow by a packet routing control
J Ohkubo; T Horiguchi
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, Volume：353, Number：1-4, First page：649, Last page：660, Aug. 2005, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1016/j.physa.2005.01.020
DOI ID：10.1016/j.physa.2005.01.020, ISSN：0378-4371, eISSN：1873-2119, Web of Science ID：WOS:000229915200045 - Complex networks by non-growing model with preferential rewiring process
J Ohkubo; T Horiguchi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：74, Number：4, First page：1334, Last page：1340, Apr. 2005, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1143/JPSJ.74.1334
DOI ID：10.1143/JPSJ.74.1334, ISSN：0031-9015, CiNii Articles ID：150000092053, Web of Science ID：WOS:000228562900038 - Molecular alignment in a liquid induced by a nonresonant laser field: Molecular dynamics simulation
J Ohkubo; T Kato; H Kono; Y Fujimura
JOURNAL OF CHEMICAL PHYSICS, Volume：120, Number：19, First page：9123, Last page：9132, May 2004, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1063/1.1704631
DOI ID：10.1063/1.1704631, ISSN：0021-9606, Web of Science ID：WOS:000221146400026
- 線形代数の半歩先 データサイエンス・機械学習に挑む前の30話
大久保 潤, [Single work]
Mar. 2025
ISBN：9784065386477, 共同研究・競争的資金等ID：36619934 - 確率的シミュレーション
大久保 潤, [Single work]
Dec. 2023
ISBN：9784627097216, 共同研究・競争的資金等ID：36619934 - ネットワーク科学の道具箱
林, 幸雄; 大久保, 潤; 藤原, 義久; 上林, 憲行; 小野, 直亮; 湯田, 聴夫; 相馬, 亘; 佐藤, 一憲, [Contributor]
Dec. 2007
Japanese, Total pages：viii, 212p
CiNii Books：http://ci.nii.ac.jp/ncid/BA84306856
ISBN：9784764903463, CiNii Books ID：BA84306856
- 組合せ最適化問題を高速に解くイジングマシンへのデータ解析手法の応用
直井 達也; 岸本 龍弥; 大久保 潤
Mar. 2025
Mar. 2025 - Mar. 2025, Japanese, Oral presentation
共同研究・競争的資金等ID：36619934 - 確率微分方程式の期待値計算における簡潔な表現に関する研究
岸本 龍弥; 大久保 潤
Mar. 2025
Mar. 2025 - Mar. 2025, Japanese, Oral presentation
共同研究・競争的資金等ID：36619934 - Koopman作用素によるデータと方程式情報の統合的な利用
太田 一郎; 小柳 尚太; 金城 佳世; 大久保 潤
Mar. 2025
Mar. 2025 - Mar. 2025, Japanese, Oral presentation
共同研究・競争的資金等ID：36619934 - Sliding Window を用いたカーネル拡張動的モード分解のオンライン化
櫻井 大和; 金城 佳世; 大久保 潤
Mar. 2025
Mar. 2025 - Mar. 2025, Japanese, Oral presentation
共同研究・競争的資金等ID：36619934 - 確率微分方程式を対象としたニューラルネットワーク中間層の可視化とKoopman解析
濱 晴矢; 大久保 潤
Sep. 2024
Japanese, Poster presentation
共同研究・競争的資金等ID：36619934 - オンライン拡張動的モード分解を用いた既知のKoopnan行列の更新
小柳 尚太; 大久保 潤
Sep. 2024
Japanese, Poster presentation
共同研究・競争的資金等ID：36619934 - オンラインEDMDにおける方程式の情報の利用
太田 一郎; 小柳 尚太; 金城 佳世; 大久保 潤
Sep. 2024
Japanese, Poster presentation
共同研究・競争的資金等ID：36619934 - アニーリングマシンにおける制約式を扱う2つの手法のレプリカ交換モンテカルロ法による比較
岸本 龍弥; 大久保 潤
Sep. 2024
Japanese, Poster presentation
共同研究・競争的資金等ID：36619934 - 双対過程における微分方程式系の解法としてのテンソル・トレイン形式
金城 佳世; 大久保 潤
Sep. 2024
Japanese, Oral presentation
共同研究・競争的資金等ID：36619934 - 生成子拡張動的モード分解を用いた決定論的レーザカオスの確率モデル化
福士 鶴太郎; 大久保 潤
Sep. 2024
Japanese, Oral presentation
共同研究・競争的資金等ID：43806931 - リッジレット変換によるニューラルネットワークのパラメータ初期化手法の改良
本間 輝; 大久保 潤
Sep. 2024
Japanese, Oral presentation
共同研究・競争的資金等ID：35825151 - Sliding Windowを用いたカーネル拡張動的モード分解のオンライン化
櫻井 大和; 大久保 潤
Sep. 2024
Japanese, Oral presentation
共同研究・競争的資金等ID：36619934 - レプリカ交換モンテカルロ法による組合せ最適化問題の解探索に対するKoopman解析
直井 達也; 大久保 潤
Sep. 2024
Japanese, Oral presentation
共同研究・競争的資金等ID：36619934 - Koopman作用素とテンソル・トレイン形式をニューラルネットワークに使う
大久保潤
Jul. 2024, [Invited]
Japanese, Invited oral presentation
共同研究・競争的資金等ID：36619934 - Computing Statistics of Stochastic Differential Equations Via Tensor-Train Format
Kayo Kinjo; Jun Ohkubo
2024 SIAM Conference on Nonlinear Waves and Coherent Structures, Jun. 2024
Jun. 2024 - Jun. 2024, English, Poster presentation
共同研究・競争的資金等ID：36619934 - Reservoir computing with attention mechanism;Improving chaotic time-series forecasting
Felix Koster; Kazutaka Kanno; Jun Ohkubo; Atsushi Uchida
The First International Symposium on Photonic Computing, Mar. 2024
Mar. 2024 - Mar. 2024, English, Poster presentation - Probabilistic interpretation for leader-laggard relationship in mutually coupled synchronized semiconductor lasers
Jun Ohkubo; Kakutaro Fukushi; Yuuki Tahara; Kayo Kinjo
The First International Symposium on Photonic Computing, Mar. 2024
Mar. 2024 - Mar. 2024, English, Poster presentation
共同研究・競争的資金等ID：43806931 - 方程式とデータの融合へ向けて: 確率過程の双対性とKoopman作用素
大久保潤
Oct. 2023, [Invited]
Japanese, Invited oral presentation
共同研究・競争的資金等ID：36619934 - 最適化問題におけるスピン状態の特徴付けとその応用
佐藤 芳樹; 此島 真喜子; 田村 泰孝; 大久保 潤
Sep. 2023
Japanese, Oral presentation - モンテカルロサンプリングを用いない統計量の計算:双対過程における微分方程式系のテンソル・トレイン形式
金城 佳世; 大久保 潤
Sep. 2023
Japanese, Oral presentation
共同研究・競争的資金等ID：36619934 - カーネル法を用いた拡張動的モード分解へのオンライン学習の適用
櫻井 大和; 大久保 潤
Sep. 2023
Japanese, Poster presentation
共同研究・競争的資金等ID：36619934 - gEDMDを用いた相互結合レーザによる遅延カオス同期の確率モデル化
田原 悠暉; 大久保 潤
Sep. 2023
Japanese, Poster presentation
共同研究・競争的資金等ID：43806931 - スパイク性を用いた回帰問題の性能向上に向けた正規化手法の提案
王子 周; 大久保 潤
Sep. 2023
Japanese, Poster presentation - 量子的でない確率過程と量子的な手法の接点と応用
大久保潤
Sep. 2023, [Invited]
Japanese, Invited oral presentation - 階層型クラスタリングを用いたKoopman作用素の低次元化による計算量削減
西方 智也; 大久保 潤
Sep. 2023
Japanese, Oral presentation
共同研究・競争的資金等ID：36619934 - 双対性を用いた確率微分方程式の統計量計算における基底関数の拡張
高橋 駿太; 大久保 潤
Mar. 2023
Japanese, Poster presentation
共同研究・競争的資金等ID：36619934 - 確率微分方程式の統計量計算へのフロンティア法の利用と工夫
濱 晴矢; 大久保 潤
Mar. 2023
Japanese, Oral presentation
共同研究・競争的資金等ID：35825269 - 双対性を利用した確率微分方程式のニューラルネットワークへの埋め込み
杉下 直輝; 大久保 潤
Dec. 2022
Japanese, Oral presentation
共同研究・競争的資金等ID：35825151 - 記憶ユニットの初期化方法による関数近似性能への影響
寺澤 悠翔; 大久保 潤
Dec. 2022
Japanese, Oral presentation
共同研究・競争的資金等ID：35825151 - アニーリングマシンにおける相関に基づく連続変数の離散化手法
古江 友樹; 此島 真喜子; 田村 泰孝; 大久保 潤
Dec. 2022
Japanese, Oral presentation - 確率モデルにおけるポンプカレント現象の最適化と幾何学的描像
佐野 隆二; 大久保 潤
Dec. 2022
Japanese, Oral presentation - スパイキングニューラルネットワークへの AdaBoost の適用と工夫
川口 雅也; 大久保 潤
Sep. 2022
Japanese, Oral presentation - ホロノミック勾配法を用いた状態推定の連続時間系への適用
山本 陸; 大久保 潤
Sep. 2022
Japanese, Oral presentation
共同研究・競争的資金等ID：36619934 - 確率微分方程式における組合せ論的な統計量計算手法と計算コスト
大久保 潤
Sep. 2022
Japanese, Oral presentation
共同研究・競争的資金等ID：35825269 - 確率微分方程式に対する組合せ論的計算と Crank-Nicolson 法
大久保 潤
Sep. 2022
Japanese, Oral presentation
共同研究・競争的資金等ID：36619934 - Deep Learning Hybrid Models for Sentiment Analysis
Yunpeng Rong; Jun Ohkubo
Nov. 2021
English, Oral presentation - スパイキングニューラルネットワークにおけるマルコフ情報源の符号化手法の検討
関根 清貴; 大久保 潤
Oct. 2021
Oral presentation - 常微分方程式に基づくニューラルネットワークの複雑さと精度の数値的研究
江刺家 郁; 大久保 潤
Oct. 2021 - イジング形式を用いた組み合わせ最適化問題の難しさの可視化と定量化
副島 圭市; 此島 真喜子; 田村 泰孝; 大久保 潤
Oct. 2021
Oral presentation - 双対過程に基づくコンピューティングの展開
大久保 潤
Aug. 2021, [Invited]
Nominated symposium - 誤差逆伝播法を用いたSNNにおける量子化の影響評価
渡辺 裕美; 大久保 潤
Oct. 2020
Japanese, Oral presentation - Numerical experiments for iterative path-integral method under compound Poisson process
Hongrui Zhai; Jun Ohkubo
Oct. 2020
English, Oral presentation - Estimation of Water Storage and Drainage of Perlite As Soil for Automated Planter Cultivation
Yuka Hasama; Yoshiaki Saito; Jun Ohkubo
Sep. 2020 - Sep. 2020, English, Oral presentation - 確率微分方程式における双対性を用いた期待値の計算
大久保 潤
Mar. 2020 - Mar. 2020, Japanese, Oral presentation - イジング計算機での利用に向けたl1ノルムのQUBO形式について
横田 知大; 此島 真喜子; 田村 泰孝; 大久保 潤
Mar. 2020 - Mar. 2020, Japanese, Oral presentation - プランタ栽培における含水状態および排水の計測
挾間 優佳; 齋藤 芳明; 大久保 潤
Mar. 2020 - Mar. 2020, Japanese, Oral presentation - ベイズ統計を用いた神経細胞軸索輸送の自動粒子追跡に関する研究
稗田 康洋; 大久保 潤; 林 久美子
Mar. 2020 - Mar. 2020, Japanese, Oral presentation - 双対を用いた計算について
大久保 潤
Nov. 2019, [Invited]
Japanese, Invited oral presentation
共同研究・競争的資金等ID：24613319 - CEMアルゴリズムを用いたマルウェアのクラスタリング
レーナン トゥアンアン; 大久保 潤
Oct. 2019 - Oct. 2019, Japanese, Oral presentation - word2visualvec を応用したマルウェア亜種推定の枠組みの提案
横瀬 謙信; 大久保 潤
Oct. 2019 - Oct. 2019, Japanese, Oral presentation - 確率過程の双対性を利用したコンピューティング
大久保 潤
Mar. 2019, [Invited], [Domestic conference]
Japanese, Invited oral presentation - イベント駆動型シミュレーションのサンプリング効率化について
大久保 潤
Mar. 2019
Japanese, Poster presentation - 土壌の含水状態モデリング
挾間 優佳; 齋藤 芳明; 大久保 潤
Mar. 2019 - Mar. 2019, Japanese, Oral presentation - 強化学習における相互情報量を用いた探索行動の調整
小山 凱史; 大久保 潤
Mar. 2019, Japanese, Oral presentation - ReLU型関数のQUBO形式に関する数値的検証
佐藤 豪; 此島 真喜子; 大輪 拓也; 田村 泰孝; 大久保 潤
Mar. 2019
Japanese, Oral presentation - 機械学習を利用するための考え方のポイント
大久保 潤
Sep. 2018, [Invited], [Domestic conference]
Japanese, Invited oral presentation - fastTextを用いたマルウェア亜種判別
岩元 遼太; 大久保 潤
Sep. 2018 - Sep. 2018, Japanese, Oral presentation - 双対性と経路積分を用いた最適制御における補間法の利用
武田 雄介; 大久保 潤
Sep. 2018 - Sep. 2018, Japanese, Oral presentation - Computation based on Duality in Stochastic Processes and Its Application
Jun Ohkubo
2018 International Symposium for Advanced Computing and Information Technology (ISACIT 2018), Aug. 2018, [Invited], [International conference]
English, Keynote oral presentation - 分割演算子法を用いた確率的勾配法の検討
鈴木 和磨; 大久保 潤
Sep. 2017 - Sep. 2017, Japanese, Oral presentation - ガウシアングラフィカルモデルを用いた動画補修の提案
藤田 涼世; 大久保 潤
Sep. 2017 - Sep. 2017, Japanese, Oral presentation - 二値行列分解のためのイジングモデルの定式化
中村 崇人; 大久保 潤; 此島 真喜子; 田村 泰孝
Sep. 2017 - Sep. 2017, Japanese, Oral presentation - 確率微分方程式のモデル推定の双対性に基づいた数値計算法の提案
荒井 祐樹; 大久保 潤
Sep. 2017 - Sep. 2017, Japanese, Oral presentation - 機械学習を利用するための考え方のポイント
大久保 潤
Oct. 2016, [Invited], [Domestic conference]
Japanese, Invited oral presentation - 非可換代数と双対確率過程 -- 量子系の手法で古典確率過程を扱う
大久保 潤
May 2015, [Invited], [Domestic conference]
Japanese, Invited oral presentation - Toward useful and concise descriptions for dynamics in small systems
Jun Ohkubo
Minisymposium "Stochastic processes on biological fluctuations" in the joint annual meeting of the Japanese society for mathematical biology and the society for mathematical biology (JSMB/SMB OSAKA 2014), Jul. 2014, [Invited], [International conference]
English, Invited oral presentation - Geometric phase discussions for counting statistics
2013 Taiwan International Workshop on Biological Physics and Complex Systems (BioComplex-Taiwan-2013), Jul. 2013, [Invited], [International conference]
English, Invited oral presentation - Application of quantum mechanical formulation to classical stochastic processes
Kyoto University-Durham University Joint International Symposium 2012: Emergence and Feedback in Physical and Social Systems, Nov. 2012, Various instutites and departments in Kyoto University and Durham University, [Invited], [International conference]
English, Invited oral presentation - Applications of concepts and methods in physics to stochasticity in networks
International Conference on Towards Mathematical Foundations of Complex Network Theory, Sep. 2012, [Invited], [International conference]
English, Invited oral presentation - 離散的に観測された時系列データからのモデル再構成
Jun. 2012, [Invited]
Japanese, Invited oral presentation - 計数統計とその周辺
Sep. 2011
Japanese, Invited oral presentation - 非平衡統計力学から見たナノデバイスの情報処理機能
Mar. 2011, [Invited]
Japanese, Invited oral presentation
- THE SOCIETY OF INSTRUMENT AND CONTROL ENGINEERS
- THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS
- THE PHYSICAL SOCIETY OF JAPAN
- Koopman作用素を用いたニューラルネットワークの構築とその応用
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Apr. 2021 - Mar. 2026
Saitama University
Grant amount(Total)：4160000, Direct funding：3200000, Indirect funding：960000
Grant number：21K12045
論文ID：48941158, 講演・口頭発表等ID：48233904 - Koopman作用素を用いたレーザダイナミクスの確率的挙動のモデル化
Apr. 2023 - Mar. 2025
Grant amount(Total)：6500000, Direct funding：5000000, Indirect funding：1500000
Grant number：23H04800
論文ID：47171278, 講演・口頭発表等ID：48233912 - 方程式と双対性でつなぐ革新的データ処理技術の創出
Apr. 2022 - Mar. 2025
Principal investigator
論文ID：48941162, 書籍等出版物ID：49401649, 講演・口頭発表等ID：49544108 - 双対過程に基づくサンプリング不要な統計量計算手法のアルゴリズム論的解析と効率化
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A), Grant-in-Aid for Transformative Research Areas (A), Sep. 2021 - Mar. 2023
Saitama University, Principal investigator
Grant amount(Total)：5200000, Direct funding：4000000, Indirect funding：1200000
Grant number：21H05843
講演・口頭発表等ID：42312298 - 双対過程に基づくコンピューティングの展開
Oct. 2018 - Mar. 2022
Principal investigator
論文ID：40648210, 講演・口頭発表等ID：26885217 - 双対関係を利用した時系列データモデリング手法の構築
Apr. 2016 - Mar. 2020
Principal investigator
Competitive research funding - 代数的確率論に基づく細胞内反応時系列データ解析手法の開発
2013 - 2015
Principal investigator
Competitive research funding - Computational study of locomotion, learning, and memory using stochastic analysis methods
Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(新学術領域研究(研究領域提案型)), 新学術領域研究(研究領域提案型), 2008 - 2012
Naoki MASUDA; 大久保 潤, 東京大学, Coinvestigator not use grants
Grant amount(Total)：33930000, Direct funding：26100000, Indirect funding：7830000
(抄録なし)
Competitive research funding, Grant number：20115009 - Development and applications of analytical methods for classical stochastic processes based on condensed matter physics
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Young Scientists (B), 2009 - 2011
OHKUBO Jun, Principal investigator
Grant amount(Total)：3380000, Direct funding：2600000, Indirect funding：780000
Inthisstudy, analyticalmethodsforclassicalstochasticprocesseswerestudied. Basedonformalanalogieswithmethodsincondensedmatterphysics, thefollowingtwopointsweremainlyinvestigated, i. e.,(1) arelationshipbetweenquantummechanicalformalismandstochasticprocessesforchemicalreactionsandecosystems, and(2) basicsforcountingstatistics(itsrelationtogeometricphases, andproposalofanumericalmethod). Inaddition, anewapProximationschemeforgeneregulatorysystemswasproposed. Thesestudiesareexpectedtobeusefulnotonlyforphysics, butalsoforlifesciences.
Competitive research funding, Grant number：21740283 - 確率的情報処理としての複雑ネットワークにおけるコミュニティ検出・制御理論の構築
2006 - 2006
Principal investigator
Competitive research funding, Grant number：06J05140