Kazuyuki Aihara

J-GLOBAL         Last updated: Nov 29, 2018 at 13:31
 
Avatar
Name
Kazuyuki Aihara
URL
http://www.sat.t.u-tokyo.ac.jp/index.html
Job title
Professor
Degree
Ph.D.(The University of Tokyo), M. Eng.(The University of Tokyo)
Research funding number
40167218

Research Interests

 
 

Research Areas

 
 

Awards & Honors

 
Sep 2013
Associative Dynamics with Structured Relations Among Memories in a Chaotic Neural Network, NOLTA Best Paper Award, IEICE
Winner: Makito Oku and Kazuyuki Aihara
 
Dec 2010
Daiwa Adrian Prize 2010
 

Published Papers

 
Tanaka Gouhei, Dominguez-Huttinger Elisa, Christodoulides Panayiotis, Aihara Kazuyuki, Tanaka Reiko J.
JOURNAL OF THEORETICAL BIOLOGY   448 66-79   Jul 2018   [Refereed]
Ito Daisuke, Ueta Tetsushi, Aihara Kazuyuki
PHYSICA D-NONLINEAR PHENOMENA   372 22-30   Jun 2018   [Refereed]
Timothée Levi,Takuya Nanami,Atsuya Tange,Kazuyuki Aihara,Takashi Kohno
IEEE Trans. on Circuits and Systems-II   65(5) 577-581   May 2018   [Refereed]
Yamamoto Yoshihisa, Aihara Kazuyuki, Leleu Timothee, Kawarabayashi Ken-ichi, Kako Satoshi, Fejer Martin, Inoue Kyo, Takesue Hiroki
NPJ QUANTUM INFORMATION   4    Feb 2018   [Refereed]
Sugahara Hideo, Kamata Naoki, Toda Yusuke, Kato Masakazu, Aihara Kazuyuki
ELECTRICAL ENGINEERING IN JAPAN   202(1) 11-28   Jan 2018   [Refereed]
Timothée Levi,Yanchen Guo,Kazuyuki Aihara,Takashi Kohno
JRNAL   4(4) 299-302   2018   [Refereed]
Hirata Yoshito, Aihara Kazuyuki
SOLAR ENERGY   149 294-301   Jun 2017   [Refereed]
Li Yang, Oku Makito, He Guoguang, Aihara Kazuyuki
NEURAL NETWORKS   88 9-21   Apr 2017   [Refereed]
Iwayama Koji, Hirata Yoshito, Aihara Kazuyuki
PHYSICS LETTERS A   381(4) 257-262   Jan 2017   [Refereed]
Takumi Sase,Yuichi Katori,Motomasa Komuro,Kazuyuki Aihara
Front. Comput. Neurosci.   2017    2017   [Refereed]
Hao San,Rompei Sugawara,Masao Hotta,Tatsuji Matsuura,Kazuyuki Aihara
IEICE Transactions   100-A(2) 534-540   2017   [Refereed]
Kyohei Kamiyama,Motomasa Komuro,Kazuyuki Aihara
I. J. Bifurcation and Chaos   27(3) 1-11   2017   [Refereed]
Muyuan Xu,Yuichi Katori,Kazuyuki Aihara
I. J. Bifurcation and Chaos   27(10) 1-18   2017   [Refereed]
Xiaoping Liu 0002,Xiao Chang,Rui Liu,Xiangtian Yu,Luonan Chen,Kazuyuki Aihara
PLoS Computational Biology   13(7)    2017   [Refereed]
Hiromasa Sakaguchi,Koji Ogata,Tetsu Isomura,Shoko Utsunomiya,Yoshihisa Yamamoto,Kazuyuki Aihara
Entropy   18(10) 365   Oct 2016   [Refereed]
Sase Takumi, Pena Ramirez Jonatan, Kitajo Keiichi, Aihara Kazuyuki, Hirata Yoshito
PHYSICS LETTERS A   380(11-12) 1151-1163   Mar 2016   [Refereed]
Fukino Miwa, Hirata Yoshito, Aihara Kazuyuki
CHAOS   26(2)    Feb 2016   [Refereed]
Tomoshi Otsuki,Kazuyuki Aihara
J. Heuristics   22(4) 567-585   2016   [Refereed]
Motomasa Komuro,Kyohei Kamiyama,Tetsuro Endo,Kazuyuki Aihara
I. J. Bifurcation and Chaos   26(7) 1-40   2016   [Refereed]
Ryota Mori,Gouhei Tanaka,Ryosho Nakane,Akira Hirose,Kazuyuki Aihara
Neural Information Processing - 23rd International Conference, ICONIP 2016, Kyoto, Japan, October 16-21, 2016, Proceedings, Part I   264-271   2016   [Refereed]
Zhiqiang Tong,Kazuyuki Aihara,Gouhei Tanaka
Neural Information Processing - 23rd International Conference, ICONIP 2016, Kyoto, Japan, October 16-21, 2016, Proceedings, Part II   454-461   2016   [Refereed]
Takahashi Nozomu, Hirata Yoshito, Aihara Kazuyuki, Mas Paloma
CELL   163(7) 1807   Dec 2015   [Refereed]
Hirata Yoshito, Aihara Kazuyuki
CHAOS   25(12)    Dec 2015   [Refereed]
Hirata Yoshito, Aihara Kazuyuki
JOURNAL OF THEORETICAL BIOLOGY   384 147-152   Nov 2015   [Refereed]
Array,Motomasa Komuro,Array,Kazuyuki Aihara
I. J. Bifurcation and Chaos   25(12) 1550168   Nov 2015   [Refereed]
Ikeda Hiroki, Godinho-Santos Ana, Rato Sylvie, Vanwalscappel Benedicte, Clavel Francois, Aihara Kazuyuki, Iwami Shingo, Mammano Fabrizio
SCIENTIFIC REPORTS   5    Oct 2015   [Refereed]
Zou Hai-Lin, Katori Yuichi, Deng Zi-Chen, Aihara Kazuyuki, Lai Ying-Cheng
CHAOS   25(10)    Oct 2015   [Refereed]
Ohtaki Megu, Tonda Tetsuji, Aihara Kazuyuki
MATHEMATICAL BIOSCIENCES   268 31-37   Oct 2015   [Refereed]
Ishizaki Takayuki, Kashima Kenji, Girard Antoine, Imura Jun-ichi, Chen Luonan, Aihara Kazuyuki
AUTOMATICA   59 238-247   Sep 2015   [Refereed]
Mitsui Takahito, Crucifix Michel, Aihara Kazuyuki
PHYSICA D-NONLINEAR PHENOMENA   306 25-33   Jun 2015   [Refereed]
Ben-Gong Zhang,Gouhei Tanaka,Kazuyuki Aihara,Masao Honda,Shuichi Kaneko,Luonan Chen
I. J. Bifurcation and Chaos   25(7) 1540011   Jun 2015   [Refereed]
Sughiyama Y, Kobayashi TJ, Tsumura K, Aihara K
Physical review. E, Statistical, nonlinear, and soft matter physics   91(3-1) 032120   Mar 2015   [Refereed]
Hiromichi Tsukada,Hiroshi Fujii,Kazuyuki Aihara,Ichiro Tsuda
Neural Networks   62 73-82   Feb 2015   [Refereed]
Ryosuke Hosaka,Toshi Nakajima,Kazuyuki Aihara,Yoko Yamaguchi,Hajime Mushiake
Neural Networks   62 62-66   Feb 2015   [Refereed]
Leleu T, Aihara K
Physical review. E, Statistical, nonlinear, and soft matter physics   91(2) 022804   Feb 2015   [Refereed]
Hatano T, Hirata Y, Suzuki H, Aihara K
Journal of theoretical biology   366 33-45   Feb 2015   [Refereed]
Speidel L, Lambiotte R, Aihara K, Masuda N
Physical review. E, Statistical, nonlinear, and soft matter physics   91(1) 012806   Jan 2015   [Refereed]
Hirata Y, Shiro M, Takahashi N, Aihara K, Suzuki H, Mas P
Chaos (Woodbury, N.Y.)   25(1) 013114   Jan 2015   [Refereed]
Takayuki Ishizaki,Henrik Sandberg,Kenji Kashima,Jun-ichi Imura,Kazuyuki Aihara
IEEE Trans. Automat. Contr.   60(4) 1023-1037   2015   [Refereed]
Sasai T, Morino K, Tanaka G, Almendral JA, Aihara K
PloS one   10(4) e0123722   2015   [Refereed]
Taichi Kiwaki,Kazuyuki Aihara
Artif. Intell. Research   4(1) 53-59   2015   [Refereed]
Masaki Inoue,Hikaru Ikuta,Shuichi Adachi,Jun-ichi Imura,Kazuyuki Aihara
I. J. Bifurcation and Chaos   25(7)    2015   [Refereed]
Ma H, Aihara K, Chen L
Scientific reports   4 7464   Dec 2014   [Refereed]
Sato YD, Aihara K
Neural computation   26(11) 2395-2418   Nov 2014   [Refereed]
Sato K, Takeuchi JS, Misawa N, Izumi T, Kobayashi T, Kimura Y, Iwami S, Takaori-Kondo A, Hu WS, Aihara K, Ito M, An DS, Pathak VK, Koyanagi Y
PLoS pathogens   10(10) e1004453   Oct 2014   [Refereed]
Wang B, Tanaka G, Suzuki H, Aihara K
Physical review. E, Statistical, nonlinear, and soft matter physics   90(3) 032806   Sep 2014   [Refereed]
Dahlem MA, Kurths J, Ferrari MD, Aihara K, Scheffer M, May A
Cephalalgia : an international journal of headache   35(7) 627-630   Sep 2014   [Refereed]
Liu B, Yuan Z, Aihara K, Chen L
Journal of the Royal Society, Interface / the Royal Society   11(97) 20140326   Aug 2014   [Refereed]
Leo Speidel, Renaud Lambiotte, Kazuyuki Aihara, Naoki Masuda
Physical Review E, 91, 012806 (2015)      Jul 2014
Random walks are basic diffusion processes on networks and have applications
in, for example, searching, navigation, ranking, and community detection.
Recent recognition of the importance of temporal aspects on networks spurred
studies of random w...
Yoshito Hirata, Taiji Yamada, Jun Takahashi, Kazuyuki Aihara, and Hideyuki Suzuki
Renewable Energy   67 35-39   Jul 2014   [Refereed]
Tanaka G, Urabe C, Aihara K
Scientific reports   4 5522   Jul 2014   [Refereed]
Rui Liu,Xiangtian Yu,Xiaoping Liu,Dong Xu,Kazuyuki Aihara,Luonan Chen
Bioinformatics   30(11) 1579-1586   Jun 2014   [Refereed]
Hirata Y, Azuma S, Aihara K
Methods (San Diego, Calif.)   67(3) 278-281   Jun 2014   [Refereed]
Suzuki Y, Sakai D, Nomura T, Hirata Y, Aihara K
Journal of theoretical biology   350 1-16   Jun 2014   [Refereed]
Tanaka G, Morino K, Daido H, Aihara K
Physical review. E, Statistical, nonlinear, and soft matter physics   89(5) 052906   May 2014   [Refereed]
Ikeda H, de Boer RJ, Sato K, Morita S, Misawa N, Koyanagi Y, Aihara K, Iwami S
Theoretical biology & medical modelling   11 22   May 2014   [Refereed]
Kobayashi T, Koizumi Y, Takeuchi JS, Misawa N, Kimura Y, Morita S, Aihara K, Koyanagi Y, Iwami S, Sato K
Journal of virology   88(10) 5881-5887   May 2014   [Refereed]
Liu R, Wang X, Aihara K, Chen L
Medicinal research reviews   34(3) 455-478   May 2014   [Refereed]
Duan F, Watanabe K, Yoshimura Y, Kikuchi M, Minabe Y, Aihara K
Brain and cognition   86 10-16   Apr 2014   [Refereed]
Ejima K, Aihara K, Nishiura H
Journal of theoretical biology   346 47-53   Apr 2014   [Refereed]
Sasamori J, Hasegawa T, Takaya A, Watanabe Y, Tanaka M, Ogino Y, Chiba T, Aihara K
Journal of cardiovascular pharmacology   63(4) 351-359   Apr 2014   [Refereed]
Sekikawa M, Inaba N, Kamiyama K, Aihara K
Chaos (Woodbury, N.Y.)   24(1) 013137   Mar 2014   [Refereed]
Yokota R, Aihara K, Kanzaki R, Takahashi H
Brain topography   28(3) 401-410   Mar 2014   [Refereed]
Aihara I, Mizumoto T, Otsuka T, Awano H, Nagira K, Okuno HG, Aihara K
Scientific reports   4 3891   Jan 2014   [Refereed]
Leo Speidel,Renaud Lambiotte,Kazuyuki Aihara,Naoki Masuda
CoRR   abs/1407.4582    2014   [Refereed]
Tohru Kohda,Yutaka Jitsumatsu,Kazuyuki Aihara
IEEE Wireless Communications and Networking Conference, WCNC 2014, Istanbul, Turkey, April 6-9, 2014   457-462   2014   [Refereed]
Takashi Kohno,Kazuyuki Aihara
21st IEEE International Conference on Electronics, Circuits and Systems, ICECS 2014, Marseille, France, December 7-10, 2014   199-202   2014   [Refereed]
Hao San,Rompei Sugawara,Masao Hotta,Tatsuji Matsuura,Kazuyuki Aihara
Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014, San Jose, CA, USA, September 15-17, 2014   1-4   2014   [Refereed]
Masaki Inoue,Jun-ichi Imura,Takayuki Arai,Kenji Kashima,Kazuyuki Aihara
53rd IEEE Conference on Decision and Control, CDC 2014, Los Angeles, CA, USA, December 15-17, 2014   5973-5978   2014   [Refereed]
Md. Abdus Samad Kamal,Jun-ichi Imura,Tomohisa Hayakawa,Akira Ohata,Kazuyuki Aihara
IEEE Transactions on Intelligent Transportation Systems   15(2) 878-888   2014   [Refereed]
Takayuki Ishizaki,Kenji Kashima,Jun-ichi Imura,Kazuyuki Aihara
IEEE Trans. Automat. Contr.   59(1) 48-63   2014   [Refereed]
Kazuyuki Aihara,Mikio Hasegawa
Proceedings of the IEEE   102(3) 585   2014   [Refereed]
Mikio Hasegawa,Hiroshi Hirai,Kiyohito Nagano,Hiroshi Harada,Kazuyuki Aihara
Proceedings of the IEEE   102(3) 574-584   2014   [Refereed]
Huanfei Ma,Tianshou Zhou,Kazuyuki Aihara,Luonan Chen
I. J. Bifurcation and Chaos   24(12)    2014   [Refereed]
Kyohei Kamiyama,Motomasa Komuro,Tetsuro Endo,Kazuyuki Aihara
I. J. Bifurcation and Chaos   24(12)    2014   [Refereed]
Daisuke Ito,Tetsushi Ueta,Takuji Kousaka,Jun-ichi Imura,Kazuyuki Aihara
I. J. Bifurcation and Chaos   24(10)    2014   [Refereed]
Rompei Sugawara,Hao San,Kazuyuki Aihara,Masao Hotta
IEICE Transactions   97-C(4) 308-315   2014   [Refereed]
Guo Q, Lu Z, Hirata Y, Aihara K
Chaos (Woodbury, N.Y.)   23(4) 043125   Dec 2013   [Refereed]
Paucar Bravo E, Aihara K, Hirata Y
Chaos (Woodbury, N.Y.)   23(4) 043104   Dec 2013   [Refereed]
Leleu T, Aihara K
Neural computation   25(12) 3131-3182   Dec 2013   [Refereed]
Miho Onizuka,Huu Hoang,Mitsuo Kawato,Isao T. Tokuda,Nicolas Schweighofer,Yuichi Katori,Kazuyuki Aihara,Eric J. Lang,Keisuke Toyama
Neural Networks   47 51-63   Nov 2013   [Refereed]
Oku M, Makino T, Aihara K
IEEE transactions on neural networks and learning systems   24(11) 1877-1887   Nov 2013   [Refereed]
Dahlem MA, Rode S, May A, Fujiwara N, Hirata Y, Aihara K, Kurths J
Translational neuroscience   4(3)    Sep 2013   [Refereed]
Morino K, Tanaka G, Aihara K
Physical review. E, Statistical, nonlinear, and soft matter physics   88(3) 032909   Sep 2013   [Refereed]
Suzuki T, Aihara K
Mathematical biosciences   245(1) 40-48   Sep 2013   [Refereed]
Nishikawa I, Tanaka G, Aihara K
Physical review. E, Statistical, nonlinear, and soft matter physics   88(2) 024102   Aug 2013   [Refereed]
Takashi Kohno,Kazuyuki Aihara
Biosystems   112(3) 276-283   Jun 2013   [Refereed]
Yoshito Hirata and Kazuyuki Aihara
European Physical Journal Special Topics   222(2) 303-315   Jun 2013   [Refereed]
Uenohara S, Mitsui T, Hirata Y, Morie T, Horio Y, Aihara K
Chaos (Woodbury, N.Y.)   23(2) 023110   Jun 2013   [Refereed]
Hideyuki Suzuki, Jun-ichi Imura, Yoshihiko Horio, and Kazuyuki Aihara
Scientific Reports   3 1610-1-5   Apr 2013   [Refereed]
Ejima K, Aihara K, Nishiura H
Theoretical biology & medical modelling   10 17   Mar 2013   [Refereed]
Nakaoka S, Aihara K
Journal of mathematical biology   66(4-5) 807-835   Mar 2013   [Refereed]
Fukuhara M, Iwami S, Sato K, Nishimura Y, Shimizu H, Aihara K, Koyanagi Y
Journal of virology   87(1) 701-705   Jan 2013   [Refereed]
Tanaka G, Aihara K
Journal of theoretical biology   317 87-95   Jan 2013   [Refereed]
Taichi Kiwaki,Takaki Makino,Kazuyuki Aihara
CoRR   abs/1312.5412    2013   [Refereed]
Sainbayar Sukhbaatar,Takaki Makino,Kazuyuki Aihara
CoRR   abs/1301.3323    2013   [Refereed]

Misc

 
伊藤 大赳, 村田 侑雄, 武居 弘樹, 合原 一幸, 長谷川 幹雄
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   118(75) 63-68   Jun 2018
伊藤 大赳, 村田 侑雄, 武居 弘樹, 合原 一幸, 長谷川 幹雄
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   118(76) 63-68   Jun 2018
TAMURA Hiroto, KOHNO Takashi, AIHARA Kazuyuki
Bimonthly Journal of Institute of Industrial Science, University of Tokyo   70(3) 183-185   May 2018
<p>A deep neural network (DNN) has been in the center of attention in the field of machine learning, and the chaotic neuron and chaotic neural network (ChNN) models have been in the spotlight in computational neuroscience and nonlinear science. Ho...
OMI Takahiro, AIHARA Kazuyuki
Bimonthly Journal of Institute of Industrial Science, University of Tokyo   70(3) 139-139   May 2018
HARA Akane, NAKAOKA Shinji, AIHARA Kazuyuki
Bimonthly Journal of Institute of Industrial Science, University of Tokyo   70(3) 141-144   May 2018
<p>Close association between intestinal microbiota and the immune system suggests possibility of developing a novel treatment method for allergy by modulating intestinal microbiota. Although time-series data with sufficient length are required for...
原 朱音, 中岡 慎治, 合原 一幸
生産研究   70(3) 141-144   May 2018
田村 浩人, 河野 崇, 合原 一幸
生産研究   70(3) 183-185   May 2018
村田 侑雄, 大薮 悠平, 黒田 佳織, 合原 一幸, 長谷川 幹雄
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   117(520) 7-12   Mar 2018
村田 侑雄, 安田 裕之, 黒田 佳織, 合原 一幸, 長谷川 幹雄
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   116(514) 7-12   Mar 2017
NAGATA Motoki, AIHARA Kazuyuki
SEISAN KENKYU   69(3) 165-170   2017
<p>Since crashes of financial bubbles cause damage to our society, it is important to predict the crashes and take necessary actions. The dynamical network marker can be applied to such real-time precursor detection in multivariate time series dat...
OKAJIMA Hiroaki, AIHARA Kazuyuki
SEISAN KENKYU   69(3) 159-163   2017
<p>In this paper, we propose a new mathematical model of ordinary differential equations using four variables in an attempt to reproduce the growth of prostate cancer that shows a special phenomenon of antiandrogen withdrawal syndrome. In addition...
FUJII Fumiyuki, AIHARA Kazuyuki
SEISAN KENKYU   69(3) 155-158   2017
<p>Lightning causes damage of our infrastructures, such as power grids and communication systems. In order to protect such damage, knowledge on characteristics of lightning is essentially important. Therefore observation data of LLS (Lightning Loc...
KITAGAWA Kousaku, NAKAOKA Shinji, ASAI Yusuke, AIHARA Kazuyuki, IWAMI Shingo
SEISAN KENKYU   69(3) 151-153   2017
<p>A mathematical model of Hepatitis C Virus (HCV) dynamics with RNA replication under antiviral therapy was constructed by a set of partial differential equations (PDEs). In previous works, they solved the model as ordinary differential equations...
SHIRO Masanori, AIHARA Kazuyuki
SEISAN KENKYU   69(3) 147-150   2017
<p>In the family of 1-dimensional maps with the power parameter p and the bifurcation parameter a, which extend the Logistic map, we estimated the Feigenbaum points of a for different values of p, using the compression ...
KOHNO Takashi, AIHARA Kazuyuki
SEISAN KENKYU   69(3) 145-145   2017
Morino Kai, Tanaka Gouhei, Aihara Kazuyuki
Meeting Abstracts of the Physical Society of Japan   72(0) 3035-3035   2017
<p>今回の発表では,興奮性を示す位相振動子を結合した系において,結合強度を強化することで起こる自発的振動現象の解析結果について報告する.今回の系では結合強度を上げることで安定平衡点がサドルノード分岐により消失して自発的な振動が生じるが,全ての素子が振動を開始する場合と一部の素子のみが振動を開始する場合がパラメータにより分かれる.この振動開始のメカニズムを分岐解析によって詳細に解析した結果を報告する.</p>
Okamoto Yuji, Aihara Kazuyuki
Proceedings of the Japan Joint Automatic Control Conference   60(0) 1051-1056   2017
Kajita Masashi, Aihara Kazuyuki, Kobayashi Tetsuya
Proceedings of the Japan Joint Automatic Control Conference   60(0) 1003-1004   2017
林 航平, 安田 裕之, Huynh Thong, 黒田 佳織, 合原 一幸, 長谷川 幹雄
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   116(285) 67-70   Nov 2016
辻 祥太朗, 合原 一幸
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   116(151) 17-20   Jul 2016
安田 裕之, 長谷川 幹雄, 合原 一幸
回路とシステムワークショップ論文集 Workshop on Circuits and Systems   29 120-123   May 2016
Kanamaru Keisuke, Yasuda Hiroyuki, Kuroda Kaori, Aihara Kazuyuki, Hasegawa Mikio
Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference   2016 "S-107"-"S-108"   Mar 2016
Fujiwara N., Sonawane Abhijeet R., Iwayama K., Aihara K.
Meeting Abstracts of the Physical Society of Japan   71(0)    2016
NAKAMARU Tomoki, AIHARA Kazuyuki, OKU Makito
SEISAN KENKYU   68(3) 261-264   2016
Deep neural networks and their learning methods( deep learning) are attracting attentions of many people in late years with many successful results. Although error backpropagation is generally used for training multilayer neural networks, its perf...
MURAI Kazuma, AIHARA Kazuyuki, SUZUKI Hideyuki
SEISAN KENKYU   68(3) 257-260   2016
Influenza is an infectious disease that has been a serious threat to human beings. In this paper, we propose an influenza prediction model by introducing geographic information into a previously proposed model. Using sequence data of observed viru...
NAKAGAWA Takuma, OKU Makito, AIHARA Kazuyuki
SEISAN KENKYU   68(3) 271-274   2016
Recently, the dynamical network marker (DNM) method has been developed for providing early warning signals that predict abrupt changes of complex systems accompanying bifurcations. In our study, we constructed a generic mathematical model for syst...
OKAJIMA Hiroaki, AIHARA Kazuyuki
SEISAN KENKYU   68(3) 265-269   2016
Natural phenomena can be expressed by numerous mathematical equations. Among such equations, partial differential equations are known to be used to describe phenomena that are especially complex. Analysis by using the method of mathematical modell...
KOHNO Takashi, AIHARA Kazuyuki
SEISAN KENKYU   68(3) 231-231   2016
SHIRO Masanori, AIHARA Kazuyuki
SEISAN KENKYU   68(3) 233-234   2016
In this report, we show the result of numerical calculation about the beta-expansion of real number a. As a result, we found that the ratio of each integer would change self-similarly depending on a change of β regardless of number <...
MIZUHARA Yuu, AIHARA Kazuyuki
SEISAN KENKYU   68(3) 241-243   2016
We propose a new rating method for board games with handicaps. This method is based on combination of the Prestige Score and the Elo Rating System. Using this mtehod, we can calculate ratings from match data including handicap games.
MIKI Shota, SAITO Yohei, SUGHIYAMA Yuki, AIHARA Kazuyuki, J. KOBAYASHI Tetsuya
SEISAN KENKYU   68(3) 245-246   2016
The total number of cells and the distribution of phenotypes are both robustly and spontaneously regulated in multicellular organisms. Cell-to-cell interactions are relevant for this regulation since their defects have been shown to result in irre...
OSHIMA Yuki, FUJIWARA Naoya, AIHARA Kazuyuki, ANDO Hiroyasu
SEISAN KENKYU   68(3) 247-250   2016
A mobile oscillator network, which is a kind of temporal networks, is of interest due to a variety of its applications such as mobile communication. In this study, we investigate the time required for synchronization of all the nodes in a mobile o...
ISHIYAMA Kazuki, AIHARA Kazuyuki, SUZUKI Hideyuki
SEISAN KENKYU   68(3) 251-255   2016
If power providers introduce more renewable energy power plants in the future, they may control the electricity price in order to fit demand to fluctuating supply. However, it was recently indicated using a mathematical model that price changes ma...
Aihara Kazuyuki
Transactions of Japanese Society for Medical and Biological Engineering   54(27) S142-S142   2016
<p>In this talk, I will review bases of theory of DNB (Dynamical Network Biomarkers) analysis and its application to detection of predisease states. The DNB analysis is based on bifurcation theory for a complex biological network that triggers a d...
合原 一幸
電子情報通信学会誌 = The journal of the Institute of Electronics, Information and Communication Engineers   98(11) 972-976   Nov 2015
Uenohara Seiji, Morie Takashi, Tamukoh Hakaru, Aihara Kazuyuki
Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference   2015    Aug 2015
Morino Kai, Tanaka Gouhei, Aihara Kazuyuki
Meeting Abstracts of the Physical Society of Japan   70(0)    2015
Fujiwara N., Sonawane A.R., Iwayama K., Aihara K.
Meeting Abstracts of the Physical Society of Japan   70(0)    2015
Morino Kai, Tanaka Gouhei, Aihara Kazuyuki
Meeting Abstracts of the Physical Society of Japan   70(0)    2015
Haribara Y., Leleu T., Yamamoto Y., Utsunomiya S., Aihara K.
Meeting Abstracts of the Physical Society of Japan   70(0)    2015
Sugahara Hideo, Kamata Naoki, Toda Yusuke, Kato Masakazu, Aihara Kazuyuki
IEEJ Transactions on Power and Energy   135(4) 213-223   2015
FIT (Feed-In Tariff) has been enforced to promote utilization of renewable energy since 2012 in Japan. Considering FIT, we propose an integration plan of incinerator plants (IPs) with high efficiency power generation for the whole area of prefectu...
AIHARA Kazuyuki, IMURA Jun-ichi, HORIO Yoshihiko, SUZUKI Hideyuki, HORAI Shunsuke
IEICE ESS Fundamentals Review   8(4) 218-228   2015
SUZUKI Hideyuki, AIHARA Kazuyuki
SEISAN KENKYU   67(3) 273-273   2015
MORI Ryota, KATORI Yuichi, AIHARA Kazuyuki
SEISAN KENKYU   67(3) 293-296   2015
The dynamic synapses are known to have short-term synaptic plasticity which can store past neuronal activity's history for about one second as changes of the synaptic transmission efficiency. Therefore, dynamic synapses may play an important funct...
AOI Noriyuki, AIHARA Kazuyuki
SEISAN KENKYU   67(3) 287-292   2015
Recently, learning algorithms of multi-layer models, or deep learning, are intensively studied. On the other hand, there is a method of data analysis called the kernel method which is used for analyzing high dimensional data by calculating the "in...
SHIRO Masanori, MORITA Mizuki, KAMISHIMA Toshihiro, HASHIDA Kouichi, AKAHO Shotaro, ASOH Hideki, ARAMAKI Eiji, KOHRO Takahide, AIHARA Kazuyuki, KOMURO Issei, NAGAI Ryozo
SEISAN KENKYU   67(3) 281-285   2015
We tried to get knowledge about the treatment process by using the reinforcement learning based on the MDP environment model as well as medical records of cardiovascular internal medicine especially two kinds of biochemical values (BNP and creatin...
KAKIZOE Yusuke, NAKAOKA Shinji, AIHARA Kazuyuki, IWAMI Shingo
SEISAN KENKYU   67(3) 275-279   2015
Mathematical modeling has contributed to quantitative understanding of viral infections. The basic model, T'(t)=βT(t)V(t), I'(t)=βT(t)V(t)-δI...
AIHARA Kazuyuki
IEICE ESS Fundamentals Review   9(2) 82-83   2015
OTSU Tomohiro, FUJIMOTO Ken'ichi, UETA Tetsushi, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   114(348) 69-74   Dec 2014
We previously proposed a parametric control method to avoid bifurcations of stable fixed and periodic points in discrete-time dynamical systems. The parameter regulation to avoid bifurcations is derived from an optimization problem on the maximum ...
Otsu Tomohiro, Fujimoto Ken'ichi, Ueta Tetsushi, Aihara Kazuyuki, Yoshinaga Tetsuya
Proceedings of the IEICE General Conference   2014 "SS-49"-"SS-50"   Mar 2014
Inoue Masaki, Imura Jun-ichi, Kashima Kenji, Arai Takayuki, Aihara Kazuyuki
Proceedings of the IEICE General Conference   2014 "SS-51"-"SS-52"   Mar 2014
TOYODA Akihito, Tanaka SYU, HORIO Yosihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   113(383) 63-66   Jan 2014
An exponential chaotic tabu search, in which the tabu search is driven by chaotic neurodynamics, has been proposed and applied to combinatorial optimization problems. However, the hardware cost of the synchronous updating exponential chaotic tabu ...
OZAWA Masato, TOYODA Akihito, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   113(383) 77-81   Jan 2014
The analog/digital hybrid hardware system for the synchronous updating exponential chaotic tabu search has been proposed to quickly solve the quadratic assignment problems. However, the synchronous updating algorithm requires to calculate the impr...
TONE Yusuke, ASAHARA Hiroyuki, AIHARA Kazuyuki, KOUSAKA Takuji
IEICE technical report. Nonlinear problems   113(383) 141-144   Jan 2014
In this paper, we propose a solving algorithm for period-1 local bifurcation point in a (2+2)-dimensional linear impact oscillator. First, we define the dynamical system of a (2+2)-dimensional linear impact oscillator. Next, we assume that the exa...
Urabe Chiyori, Fujiwara Naoya, Suzuki Shin'ichiro, Akita Junichi, Iwayama Koji, Fujii Fumiyuki, Aihara Kazuyuki
Meeting Abstracts of the Physical Society of Japan   69(0)    2014
Tokuda Keita, Katori Yuichi, Kawahara Shigenori, Aihara Kazuyuki
Meeting Abstracts of the Physical Society of Japan   69(0)    2014
Fujiwara N., Sonawane Abhijeet R., Iwayama K., Aihara K.
Meeting Abstracts of the Physical Society of Japan   69(0)    2014
SUZUKI Masayasu, TAKATSUKI Nobuki, IMURA Jun-ichi, AIHARA Kazuyuki
Transactions of the Society of Instrument and Control Engineers   50(2) 118-124   2014
In this paper, for an undirected network consisting of identical multi-dimensional linear subsystems in which the network structure is unknown and the number of input/output ports is less than that of subsystems, we propose a novel method to ident...
ARAI Takayuki, INOUE Masaki, IMURA Jun-Ichi, KASHIMA Kenji, AIHARA Kazuyuki
Transactions of the Society of Instrument and Control Engineers   50(5) 387-394   2014
In this paper, we propose a new approach to the robust stability and instability analysis for uncertain nonlinear systems. In our previous work, several criteria for the stability, instability, and robustness are given under the assumptions that t...
XU Muyuan, KATORI Yuichi, AIHARA Kazuyuki
SEISAN KENKYU   66(3) 295-298   2014
We studied the dynamics in a sparse coding-based associative memory network with dynamic synapses. The network exhibits oscillation among sparsely coded memory patterns in the depression-dominated region, while the mean activity in the network is ...
SASE Takumi, KITAJO Keiichi, AIHARA Kazuyuki, HIRATA Yoshito
SEISAN KENKYU   66(3) 299-303   2014
Dynamical noise in electroencephalographic (EEG) dynamical systems can be useful information to understand the dynamical behavior of neural networks. In this study, we analyzed temporal changes of the levels of dynamical noise in EEG dynamical sys...
TAKAHASHI Yuto, SUZUKI Hideyuki, AIHARA Kazuyuki
SEISAN KENKYU   66(3) 309-313   2014
Recently, electricity markets have been organized in many countries. Due to the complex structure, the mechanisms of markets have been studied mathematically from various points of view. Meanwhile, many countries promote use of renewable energy so...
Suzuki Yasuyuki, Sakai Daichi, Hirata Yoshito, Aihara Kazuyuki, Nomura Taishin
Transactions of Japanese Society for Medical and Biological Engineering   52(0) O-424-O-425   2014
The number of patients of prostate cancer is rapidly increasing. It is known that androgen enhances the growth of prostate cancer. Thus, continuous androgen suppression therapy, e.g. surgical castration and continuous medication, is used as the ma...
Tone Yusuke, Asahara Hiroyuki, Ito Daisuke, Ueta Tetsushi, Aihara Kazuyuki, Kousaka Takuji
IEEJ Transactions on Electronics, Information and Systems   134(5) 729-736   2014
This paper proposes a calculation method of local bifurcation points for discrete-time dynamical systems with piecewise nonlinear characteristic (PNDDS). First, an n-dimensional PNDDS, which has two piecewise nonlinear maps, is shown and it...
牧野 貴樹, 城 真範, 合原 一幸
人工知能学会全国大会論文集   28 1-3   2014
平田 祥人, 加藤 政一, 合原 一幸
電気学会研究会資料. MES   2013(1) 129-132   Nov 2013
MAKINO Takaki, IWATA Yukiko, JITSUMATSU Yutaka, HOTTA Masao, SAN Hao, AIHARA Kazuyuki
IEICE technical report. Circuits and systems   113(224) 41-44   Sep 2013
Theoretical evaluation of last{the quantization} error of the β-encoder, that is a non-binary analog-to-digital converter (ADC) based on β-expansion, is given. Although a β-encoder is considered to be robust against large process variation and wid...
MAKINO Takaki, IWATA Yukiko, JITSUMATSU Yutaka, HOTTA Masao, SAN Hao, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   113(225) 41-44   Sep 2013
Theoretical evaluation of last{the quantization} error of the β-encoder, that is a non-binary analog-to-digital converter (ADC) based on β-expansion, is given. Although a β-encoder is considered to be robust against large process variation and wid...
JITSUMATSU Yutaka, KOHDA Tohru, AIHARA Kazuyuki
IEICE technical report. SRW, Short range wireless communications   113(180) 27-31   Aug 2013
Synchronization of time and frequency is necessary for any communication system, and determination of delay and Doppler of a channel is a fundamental problem in radar. The authors have recently proposed a delay and Doppler determination method whi...
TANAKA Daiki, ASAHARA Hiroyuki, AIHARA Kazuyuki, KOUSAKA Takuji
IEEJ Transactions on Electronics, Information and Systems   133(7) 1402-1409   Jul 2013
Bifurcation phenomena in the composite dynamical system are studied for understanding basic properties of the systems. Recently, it has been reported that the unavoidable non-ideal switching action, e.g., the spike noise or the time delay, occurs ...
HOSAKA Ryosuke, NAKAJIMA Toshi, AIHARA Kazuyuki, YAMAGUCHI Yoko, MUSHIAKE Hajime
IEICE technical report. Nonlinear problems   113(69) 1-5   May 2013
While the medial motor areas are crucially involved in temporal organization of multiple movements in a flexible manner, it is poorly understood the contribution of the oscillatory local field potentials (LFPs) to the renewal process of multiple m...
YOROZUYA Tomoaki, HASEGAWA Mikio, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   113(69) 47-52   May 2013
A frequency division/spread spectrum system (FD/S^3) has been recently proposed. A robust frequency synchronization against frequency shifts can be achieved in FD/S^3 with frequency domain spread spectrum (SS) codes. On the other hand, in an async...
INOUE Masaki, SUZUKI Masayasu, KASHIMA Kenji, IMURA Jun-ichi, AIHARA Kazuyuki
Transactions of the Society of Instrument and Control Engineers   49(3) 402-407   Mar 2013
This paper is concerned with instability analysis of Lur'e systems. First, a definition of absolute instability is introduced. Then, linear matrix inequalities and equivalent frequency domain inequalities are derived for absolute instability. They...
OZAWA Masato, TOYODA Akihito, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   112(487) 109-114   Mar 2013
In order to solve the quadratic assignment problem with a parallel hardware system, an exponential chaotic tabu search, which synchronously updates the states of all neurons, has been proposed. In this paper, the effect of saturated internal state...
KOMA Takumi, HORIO Yoshihiko, TOYODA Akihito, AIHARA Kazuyuki
Proceedings of the IEICE General Conference   2013    Mar 2013
Fujiwara Naoya, Aihara Kazuyuki
Proceedings of the IEICE General Conference   2013 "S-1"-"S-2"   Mar 2013
Kitajima Hiroyuki, Fujimoto Ken'ichi, Yoshinaga Tetsuya, Aihara Kazuyuki
Proceedings of the IEICE General Conference   2013 "SS-46"-"SS-47"   Mar 2013
Fujimoto Kenichi, Yoshinaga Tetsuya, Ueta Tetsushi, Kitajima Hiroyuki, Aihara Kazuyuki
Proceedings of the IEICE General Conference   2013 "SS-50"-"SS-51"   Mar 2013
Inoue Masaki, Imura Jun-ichi, Kashima Kenji, Aihara Kazuyuki
Proceedings of the IEICE General Conference   2013 "SS-54"-"SS-55"   Mar 2013
Ito Daisuke, Ueta Tetsushi, Imura Junichi, Aihara Kazuyuki
Proceedings of the IEICE General Conference   2013 "SS-56"-"SS-57"   Mar 2013
UENOHARA Seiji, ATUTI Daisuke, MATSUZAKA Kenji, MORIE Takashi, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   112(389) 105-110   Jan 2013
In order to develop large-scale coupled nonlinear dynamical systems using CMOS integrated circuits, we propose a threshold-coupled map array circuit that is robust to CMOS device mismatch. We have already proposed a voltage- and a current-sampling...
MAEDA Michitaka, MALDONADO H. Frank, MATSUO Takayuki, TANAKA Hideki, LIANG Haichao, MATSUZAKA Kenji, MORIE Takashi, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   112(389) 181-186   Jan 2013
Spiking neuron models, in which analog information is expressed by the timing of neuronal spike firing events, attract a great deal of attention. We have already proposed an analog CMOS circuit of the integrate-and-fire spiking neuron model with s...
UENOHARA Seiji, ATUTI Daisuke, MATSUZAKA Kenji, MORIE Takashi, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   112(390) 105-110   Jan 2013
In order to develop large-scale coupled nonlinear dynamical systems using CMOS integrated circuits, we propose a threshold-coupled map array circuit that is robust to CMOS device mismatch. We have already proposed a voltage- and a current-sampling...
MAEDA Michitaka, MALDONADO H. Frank, MATSUO Takayuki, TANAKA Hideki, LIANG Haichao, MATSUZAKA Kenji, MORIE Takashi, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   112(390) 181-186   Jan 2013
Spiking neuron models, in which analog information is expressed by the timing of neuronal spike firing events, attract a great deal of attention. We have already proposed an analog CMOS circuit of the integrate-and-fire spiking neuron model with s...
Sasahara K., Hirata Y., Toyoda M., Kitsuregawa Y., Aihara K.
Meeting Abstracts of the Physical Society of Japan   68(0)    2013
Mitsui Takahito, Aihara Kazuyuki
Meeting Abstracts of the Physical Society of Japan   68(0)    2013
Nishikawa I.
Meeting Abstracts of the Physical Society of Japan   68(0)    2013
Fujiwara N., Kobayashi M. U., Aihara K.
Meeting Abstracts of the Physical Society of Japan   68(0)    2013
Urabe Chiyori, Tanaka Gouhei, Mitsudo Tetsuya, Misaki Takako, Maruyama Aya, Oshima Takahiro, Okabe Nobuhiko, Aihara Kazuyuki
Meeting Abstracts of the Physical Society of Japan   68(0)    2013
Morino Kai, Tanaka Gouhei, Aihara Kazuyuki
Meeting Abstracts of the Physical Society of Japan   68(0)    2013
Mitsudo Tetsuya, Aihara Kazuyuki
Meeting Abstracts of the Physical Society of Japan   68(0)    2013
NAKAOKA Shinji, AIHARA Kazuyuki
SEISAN KENKYU   65(3) 273-280   2013
Helper T cells emerge from naive T cells via lineage commitment. Helper T cells play a pivotal role in adaptive immune response to remove antigen. Most of previous mathematical studies only consider either population dynamics of T cell clonal expa...
SUZUKI Hideyuki, AIHARA Kazuyuki
SEISAN KENKYU   65(3) 285-285   2013
NAGATA Motoki, FUJIWARA Naoya, NISHIKAWA Isao, TANAKA Gouhei, SUZUKI Hideyuki, AIHARA Kazuyuki
SEISAN KENKYU   65(3) 295-299   2013
After the Tohoku earthquake, it is becoming very important to ensure a stable energy supply because of the recent developments in renewable and decentralized energy. In order to stabilize the supply of power grids, it is useful to analyze mathemat...
SHIRO Masanori, AKAHO Shotaro, AIHARA Kazuyuki
SEISAN KENKYU   65(3) 307-308   2013
In order to establish a mathematical model on a given time series, we propose to minimize sum of prediction errors by LASSO (least absolute shrinkage and selection operator). In LASSO, the optimization problem can be solved efficiently due to its ...
MAKINO Takaki, ODA Yasushi, AIHARA Kazuyuki
SEISAN KENKYU   65(3) 315-318   2013
One difficulty of model designing problems on the partially observable Markov decision process (POMDP), such as apprenticeship learning, was its high calculation cost for solving the optimal policy of many POMDP problems. In this paper, we propose...
OKU Makito, AIHARA Kazuyuki
SEISAN KENKYU   65(3) 319-323   2013
In this paper, we explain the Bayesian inference framework for understanding the computational principles underlying the brain's functions. We show that this framework possibly gives a unified theory for two types of information processing: input-...
SASE Takumi, KITAJO Keiichi, AIHARA Kazuyuki
SEISAN KENKYU   65(3) 325-328   2013
It is not clear what kind of features the fractal analysis of electroencephalography (EEG) signals reveals. This study aims to understand the feature of fractal structure in detail by analyzing EEGs carefully from the viewpoint of fractal. We divi...
WATANABE Hiroki, AIHARA Kazuyuki
SEISAN KENKYU   65(3) 329-335   2013
There are a variety of approaches to brain research. The numerical simulation of neural network using mathematical model is one of them, and it has been extensively studied until now. However, to comprehend the brain, it is necessary to take in fo...

Conference Activities & Talks

 
Taichi Kiwaki, Takaki Makino, Kazuyuki Aihara
19 Dec 2013   
We pursue an early stopping technique that helps Gaussian Restricted
Boltzmann Machines (GRBMs) to gain good natural image representations in terms
of overcompleteness and data fitting. GRBMs are widely considered as an
unsuitable model for natura...
Fujiwara N., Sonawane Abhijeet R., Iwayama K., Aihara K.
Meeting abstracts of the Physical Society of Japan   22 Aug 2014   
Tokuda Keita, Katori Yuichi, Kawahara Shigenori, Aihara Kazuyuki
Meeting abstracts of the Physical Society of Japan   5 Mar 2014   
Urabe Chiyori, Fujiwara Naoya, Suzuki Shin'ichiro, Akita Junichi, Iwayama Koji, Fujii Fumiyuki, Aihara Kazuyuki
Meeting abstracts of the Physical Society of Japan   5 Mar 2014   
Inoue Masaki, Imura Jun-ichi, Kashima Kenji, Arai Takayuki, Aihara Kazuyuki
Proceedings of the IEICE General Conference   4 Mar 2014   
Otsu Tomohiro, Fujimoto Ken'ichi, Ueta Tetsushi, Aihara Kazuyuki, Yoshinaga Tetsuya
Proceedings of the IEICE General Conference   4 Mar 2014   
TONE Yusuke, ASAHARA Hiroyuki, AIHARA Kazuyuki, KOUSAKA Takuji
IEICE technical report. Nonlinear problems   14 Jan 2014   
In this paper, we propose a solving algorithm for period-1 local bifurcation point in a (2+2)-dimensional linear impact oscillator. First, we define the dynamical system of a (2+2)-dimensional linear impact oscillator. Next, we assume that the exa...
OZAWA Masato, TOYODA Akihito, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   14 Jan 2014   
The analog/digital hybrid hardware system for the synchronous updating exponential chaotic tabu search has been proposed to quickly solve the quadratic assignment problems. However, the synchronous updating algorithm requires to calculate the impr...
OTSU TOMOHIRO, FUJIMOTO KEN'ICHI, UETA TETSUSHI, AIHARA KAZUYUKI
電子情報通信学会技術研究報告   26 Nov 2014   
近江崇宏, 尾形良彦, 汐見勝彦, 澤崎郁, 合原一幸, ENESCU Bogdan
日本地震学会秋季大会講演予稿集   1 Nov 2014   
大瀧慈, 冨田哲治, 大谷敬子, 佐藤裕哉, 原憲行, 伊森晋平, 川上秀史, 田代聡, 星正治, 合原一幸, 佐藤健一
原子爆弾後障害研究会特集号   25 Sep 2014   
辻明典, 藤岡慧明, 伊藤大輔, 木本圭子, 合原一究, 関川宗久, 上田哲史, 合原一幸, 川上博
電気関係学会四国支部連合大会講演論文集(CD-ROM)   12 Sep 2014   
近江崇宏, 尾形良彦, 平田祥人, 合原一幸
統計関連学会連合大会講演報告集   Sep 2014   
藤原直哉, SONAWANE Abhijeet R., 岩山幸治, 合原一幸
日本物理学会講演概要集   22 Aug 2014   
ARAI TAKAYUKI, INOUE MASAKI, IMURA JUN'ICHI, KASHIMA KENJI, AIHARA KAZUYUKI
計測自動制御学会論文集   31 May 2014   
大瀧慈, 冨田哲治, 大谷敬子, 佐藤裕哉, 原憲行, 川上秀史, 田代聡, 星正治, 合原一幸, 佐藤健一
原子爆弾後障害研究会特集号   28 Apr 2014   
占部千曲, 藤原直哉, 鈴木真一朗, 秋田純一, 岩山幸治, 藤居文行, 合原一幸
日本物理学会講演概要集   5 Mar 2014   
OZAWA Masato, TOYODA Akihito, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   7 Mar 2013   
In order to solve the quadratic assignment problem with a parallel hardware system, an exponential chaotic tabu search, which synchronously updates the states of all neurons, has been proposed. In this paper, the effect of saturated internal state...
MAEDA Michitaka, MALDONADO H. Frank, MATSUO Takayuki, TANAKA Hideki, LIANG Haichao, MATSUZAKA Kenji, MORIE Takashi, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   17 Jan 2013   
Spiking neuron models, in which analog information is expressed by the timing of neuronal spike firing events, attract a great deal of attention. We have already proposed an analog CMOS circuit of the integrate-and-fire spiking neuron model with s...
UENOHARA Seiji, ATUTI Daisuke, MATSUZAKA Kenji, MORIE Takashi, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   17 Jan 2013   
In order to develop large-scale coupled nonlinear dynamical systems using CMOS integrated circuits, we propose a threshold-coupled map array circuit that is robust to CMOS device mismatch. We have already proposed a voltage- and a current-sampling...
MAEDA Michitaka, MALDONADO H. Frank, MATSUO Takayuki, TANAKA Hideki, LIANG Haichao, MATSUZAKA Kenji, MORIE Takashi, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   17 Jan 2013   
Spiking neuron models, in which analog information is expressed by the timing of neuronal spike firing events, attract a great deal of attention. We have already proposed an analog CMOS circuit of the integrate-and-fire spiking neuron model with s...
UENOHARA Seiji, ATUTI Daisuke, MATSUZAKA Kenji, MORIE Takashi, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   17 Jan 2013   
In order to develop large-scale coupled nonlinear dynamical systems using CMOS integrated circuits, we propose a threshold-coupled map array circuit that is robust to CMOS device mismatch. We have already proposed a voltage- and a current-sampling...
TOYODA Akihito, HORIO Yosihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   12 Nov 2012   
β-encoders based on β-maps, including scale-adjusted ordinary and negative β-maps, have robustness against deviations in circuit parameters, low-accuracy and poor characteristics of circuit elements, and noise. Switched-capacitor (SC) circuit tech...
NAKAMURA Mitsuhiro, HORIO Yoshihiko, KOHDA Tohru, AIHARA Kazuyuki
Proceedings of the Society Conference of IEICE   28 Aug 2012   
KATORI Yuichi, IGARASHI Yasuhiko, OKADA Masato, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   23 Jul 2012   
We investigate dynamical properties of a stochastic neural network model in which neurons are connected by dynamic synapses that undergo short-term depression and facilitation. Here, we focus on a neural network with uniform connections and with t...
FUSHIKI Kenji, KATO Tomohiro, HASEGAWA Mikio, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   20 Mar 2012   
Effectiveness of the chaotic dynamics for combinatorial optimization problems has been shown by many researches. The chaotic sequences with negative autocorrelation improve the performance of asynchronous searching methods in a chaotic noise metho...
FUKUSHIMA Hirotaka, HORIO Yosihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   20 Mar 2012   
Recently, a golden-ratio-encoder (GRE) was proposed for A/D conversion based on the β-encoder with a radix equal to the golden ratio, φ. GRE is an A/D converter with an exponential bit-rate accuracy with respect to the bit length L, and robustness...
NAKAMURA Mitsuhiro, HORIO Yoshihiko, KOHDA Tohru, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   20 Mar 2012   
A β-encoder has exponential bit-rate accuracy, and robustness for circuit parameter deviations and noise. Then, the β-map was extended to a scale-adjusted β-map which yeilds more freedom in circuit designs than the β-map. Furthermore, a chaotic ge...
FUSHIKI Kenji, KATO Tomohiro, HASEGAWA Mikio, AIHARA Kazuyuki
20 Mar 2012   
Matsui Takumi, Hasegawa Mikio, Hirai Hiroshi, Nagano Kiyohito, Abe Rikiya, Aihara Kazuyuki
Proceedings of the IEICE General Conference   6 Mar 2012   
Hara Takumi, Horio Yoshihiko, Aihara Kazuyuki
Proceedings of the IEICE General Conference   6 Mar 2012   
Fukushima Hirotaka, Horio Yoshihiko, Aihara Kazuyuki
Proceedings of the IEICE General Conference   6 Mar 2012   
FUKUSHIMA Hirotaka, HORIO Yosihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   16 Jan 2012   
The β-encoder is an A/D converter with an exponential bit-rate accuracy with respect to the bit length L, and robustness for circuit parameter deviations. Recently, a golden-ratio-encoder (GRE) was proposed. GRE is a data conversion method with a ...
IKEDA Masanori, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   8 Dec 2011   
Recently, the various researches on novel computation have been done. The dynamical logic element with a chaotic transition region was proposed by applying the chaotic neuron model. The proposed dynamic logic element was implemented with a switche...
ARAI Masaki, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   2 Nov 2011   
A neuron model with the internal state given by the extended Duffing equation was proposed. In this model, additional the external force to the Duffing equation controls the neuron activities. Moreover, it was shown through numerical simulations t...
ISHIMURA Kazuyoshi, TAKAHASHI Jun, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   17 Jan 2011   
Complex responses including chaotic responses were observed through physiological experiments with biological neurons. To include these complex responses, the chaotic neuron model was proposed. By the way, chaotic dynamical systems have been appli...
ISHIMURA Kazuyoshi, TAKAHASHI Jun, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   17 Jan 2011   
Complex responses including chaotic responses were observed through physiological experiments with biological neurons. To include these complex responses, the chaotic neuron model was proposed. By the way, chaotic dynamical systems have been appli...
HORIO Yosihiko, KOHDA Tohru, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   26 Jul 2010   
The β-converters are robust against errors in the quantizer threshold value like the ΣΔ-type converters, and at the same time, show the optimal rate-distortion characeristic like the PCM-type converters. We propose a circuit technique to implement...
HORIO Yosihiko, KOHDA Tohru, AIHARA Kazuyuki
IEICE technical report. Circuits and systems   26 Jul 2010   
The β-converters are robust against errors in the quantizer threshold value like the ΣΔ-type converters, and at the same time, show the optimal rate-distortion characeristic like the PCM-type converters. We propose a circuit technique to implement...
NAKAMURA Mitsuhiro, HORIO Yoshihiko, KOHDA Tohru, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   11 Jun 2010   
A β-encoder was proposed based on the β-expansion, which is an expansion of a real number with radix of β. The β-encoder has exponential bit-rate accuracy, and robustness for circuit parameter deviations and noise. Furthermore, the β-map was exten...
NAKAMURA Mitsuhiro, HORIO Yoshihiko, KOHDA Tohru, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   11 Jun 2010   
A β-encoder was proposed based on the β-expansion, which is an expansion of a real number with radix of β. The β-encoder has exponential bit-rate accuracy, and robustness for circuit parameter deviations and noise. Furthermore, the β-map was exten...
IFUKU Kazuki, ATUTI Daisuke, MORIE Takashi, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   14 Jan 2010   
Threshold Coupled Map, which has been proposed by S. Sinha, is a model in which plural processing elements that can generate chaos are connected each other via thresholding operation. In spite of using such a simple operation, this model can gener...
NAGAMATSU Yuji, KOHNO Takashi, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   4 Nov 2009   
Izhikevich model is a 2 variable differential equations that express neuron dynamics. In spite of simple form of equations, it can express variety kinds of output spike patterns because of nonlinearity that is jump of state in equation. We aim to ...
JIN'NO Kenya, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   21 Feb 2009   
Particle Swarm Optimization (PSO) is one of the powerful algorithm for solving global optimization problems. The PSO algorithm can search an optimal value of given evaluation function quickly compared with the other proposed meta-heuristics algori...
ATUTI Daisuke, MORIE Takashi, AIHARA Kazuyuki
21 Jan 2009   
DOMAE Ryosuke, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   15 Jan 2009   
Measurement results from a fully-differential hysteresis 2P-VCCS chaotic integrated circuit are presented. The prototype chip was fabricated with TSMC 0.35μm CMOS process. First, experimental results for the fully-differential hysteresis VCCS circ...
DOMAE Ryosuke, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Circuits and systems   15 Jan 2009   
Measurement results from a fully-differential hysteresis 2P-VCCS chaotic integrated circuit are presented. The prototype chip was fabricated with TSMC 0.35μm CMOS process. First, experimental results for the fully-differential hysteresis VCCS circ...
Nishikawa I., Aihara K.
Meeting abstracts of the Physical Society of Japan   25 Aug 2008   
NAKANO Aki, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   20 Jun 2008   
In this study, we apply inedex that exhibit small world nature and scale free nature to citcuit network. This index is used in complex network. Even verterx number incerase, if network behavior not change, these indexes remain in a constant value....
MIYAGI Yasushi, OKAMOTO Tsuyoshi, MORIOKA Takato, YOSHIDA Fumiaki, HASHIGUCHI Kimiaki, NAGATA Shinji, SASAKI Tomio, TOBIMATSU Shozo, AIHARA Kazuyuki
10 Jun 2008   
HAMADA Takuya, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   21 Mar 2008   
We propose a fully-differential hysteresis two-port VCCS chaotic oscillator. The fully-differential circuit structure has some advantages over the single-ended counterpart such as cancellation of even-order harmonic distortions. In particular, the...
YOKOTA Naoto, HORIO Yoshihiko, AIHARA Kazuyuki, HASEGAWA Mikio
IEICE technical report. Nonlinear problems   21 Mar 2008   
A tabu search was implemented on a chaotic neural network showing great performance in solving a quadratic assignment problem (QAP). We have implemented the exponential chaotic tabu search into a hardware system for size-10 QAPs. Experimental resu...
TAKAZAWA Chihiro, TOKUDA Isao, AIHARA Kazuki, SCHWEIGHOFER Nicolas
IEICE technical report. Neurocomputing   5 Mar 2008   
The feedback error learning has been proposed by Kawato et al. (1987, 1992) as a learning scheme of cerebellum in the framework of internal model hypothesis. In this cerebellar learning, the inferior olive (IO) plays a key role in transmitting the...
HORIO Yoshihiko, AIHARA Kazuyuki
8 Dec 2007   
TANAKA Hideki, MORIE Takashi, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   11 Nov 2007   
In some spiking neuron models, analog information is expressed by the timing of neuronal spike firing events, and synaptic weights change depending on the relative timing between asynchronous spikes, which is called spike-timing dependent synaptic...
HIROBE Kenya, O'HASHI Yuya, OGAWA Naoki, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   18 Apr 2007   
Systematic experimental measurements of an exponential chaotic tabu search hardware system are carried out for quadratic assignment problems (QAPs). The system mainly consists of 100 analog switched-current chaotic neuron circuits, which physicall...
Tajima Yuuta, Horio Yoshihiko, Aihara Kazuyuki
Proceedings of the IEICE General Conference   7 Mar 2007   
Hamada Takuya, Horio Yoshihiko, Aihara Kazuyuki
Proceedings of the IEICE General Conference   7 Mar 2007   
Shirakuma Akihiko, Horio Yoshihiko, Aihara Kazuyuki
Proceedings of the IEICE General Conference   7 Mar 2007   
Okada Atsushi, Horio Yoshihiko, Aihara Kazuyuki
Proceedings of the IEICE General Conference   7 Mar 2007   
SAWAI Ken'ichi, KUROKI Yusuke, MATSUI Tomomi, AIHARA Kazuyuki
IPSJ SIG Notes   15 Dec 2006   
This paper describes an optimization method of flute fingerings and parameter tuning. Our optimization method uses a shortest path problem of a directed graph generated by an objective passage. The vertices are the probable fingerings of the tones...
YOKOTA Naoto, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   6 Dec 2006   
It is well known that the Hop field-type neural network does not always satisfy the constraints such as one neuron in each row and column, so that the network does not always give a feasible solution for a combinatorial optimization problem. To ov...
O'HASHI Yuya, OGAWA Naoki, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   27 Sep 2006   
We improve the switched-current chaotic neuron circuit. First, we make the damping parameter for the tabu effect, k_r, externally controllable. Second, the size of the circuit is reduced by careful choice of the circuit parameters. Third, the spee...
O'HASHI Yuya, OGAWA Naoki, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Circuits and systems   27 Sep 2006   
We improve the switched-current chaotic neuron circuit. First, we make the damping parameter for the tabu effect, k_r, externally controllable. Second, the size of the circuit is reduced by careful choice of the circuit parameters. Third, the spee...
SEKIKAWA Munehisa, HAMADA Takuya, HORIO Yosihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   27 Jun 2006   
Chaotic phenomena observed in electronic circuits have been investigated extensively. Recently, researchers attempt to use chaos for applications such as chaotic communications, chaotic encryptions, combinatorial optimization problems, and so on. ...
FUJIWARA Kantaro, FUJIWARA Hiroki, TSUKADA Minoru, AIHARA Kazuyuki
IPSJ SIG technical reports   15 Jun 2006   
We statisticaly analyzed the characteristic features of interspike intervals of bursting spike sequences that are obtained from the rat gustatory cortex. In the aim of reproducing their statistical features, we constructed an alternative neuron mo...
FUJIWARA Kantaro, FUJIWARA Hiroki, TSUKADA Minoru, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   8 Jun 2006   
We statisticaly analyzed the characteristic features of interspike intervals of bursting spike sequences that are obtained from the rat gustatory cortex. In the aim of reproducing their statistical features, we constructed an alternative neuron mo...
KUROKI Tatsuya, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   13 Mar 2006   
We propose a CMOS fully-differential multi-scroll circuit. The differential circuit structure has many advantages over the single-ended counterpart. In general, a differential circuit occupies almost twice as much area as its single-ended version....
Kubota Shigeru, Okamoto Tsuyoshi, Hamaguchi Kosuke, Aihara Kazuyuki, Kitajima Tatsuo
IEICE technical report. Nonlinear problems   10 May 2005   
Electrophysiological experiments of working memory task in the presence of intervening stimuli has shown that the delay activity in the prefrontal cortex (PFC) is preserved even after the intervening stimulus presentations, while that in the infer...
Kubota Shigeru, Hamaguchi Kosuke, Aihara Kazuyuki
IEICE technical report. Neurocomputing   22 Mar 2005   
Pattern formation in a neural field model is theoretically analyzed. We show the conditions for existence and stability of local excitation solutions with arbitrary stationary input conditions to develop a graphic analysis method. The method is us...
TOKUDA Isao, MIYANO Takaya, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   18 Mar 2005   
It has been known that fluctuations observed in fundamental frequencies (FF) of normal phonation of sustained vowels are indispensable for human speech to be perceived as a natural sound. In order to synthesize a speech that well preserves the ori...
HAMAGUCHI K, OKADA M, AIHARA K
Meeting abstracts of the Physical Society of Japan   25 Aug 2004   
HAMAGUCHI K, OKADA M, AIHARA K
Meeting abstracts of the Physical Society of Japan   25 Aug 2004   
Kubota Shigeru, Aihara Kazuyuki
IEICE technical report. Nonlinear problems   9 Jul 2004   
We study global dynamics in neural fields by using Lyapunov functional. We prove that the attractor of network must be a steady state when the field length is finite and that the network cannot have limit cycle attractor when the field length is i...
HAMAGUCHI Kosuke, OKADA Masato, KUBOTA Sigeru, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   17 Jun 2004   
Stochastic resonance (SR) is the phenomena that the response of a non-linear system to a weak signal can be maximized by the presence of an appropriate level of noise. In the excitable system like a neuron, SR has been studied in single neuron, ar...
HORIO Yoshihiko, TANIGUCHI Takuya, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   15 Nov 2003   
We integrate an asynchronous spiking chaotic neuron circuit for temporal coding networks based on coincidence detection and spatio-temporal chaotic dynamics. In the proposed circuit, we take into account the coincidence detection among input spike...
HORIO Yoshihiko, TANIGUCHI Takuya, AIHARA Kazuyuki
15 Nov 2003   
ICHINOSE Natsuhiro, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   14 Oct 2003   
It is necessary for expression of a gene that it is controlled by proteins, such as transcriptional factors, corresponding to the other genes. It is important for understanding the function of the gene to reveal such relation between genes. The ex...
Hamaguchi Kosuke, Okada Masato, Yamana Michiko, Aihara Kazuyuki
Meeting abstracts of the Physical Society of Japan   15 Aug 2003   
HAMAGUCHI Kosuke, OKADA Masato, YAMANA Michiko, AIHARA Kazuyuki
IEICE technical report. Neurocomputing   20 Jun 2003   
It has been suggested for decades that information is encoded not only the mean firing rate of one neuron but also on the synchrony of neural spikes among the neuron population. Synfire chain is a model of homogeneous propagation of neuronal activ...
OKUNO Takahide, OZAWA Hirokazu, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   1 May 2003   
We have proposed a system architecture for a large-scale chaotic neuro-computer. The system has a hierarchy including "board," "unit," and "system" levels. In this paper, we implement these hierarchy onto a mixed analog/digital circuit system. The...
KOYAMA Takehiko, KOBAYASHI Yukihiro, MATSUI Satoshi, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   10 Mar 2003   
A quadratic assignment problem (QAP) is one of the difficult NP-hard combinatorial optimization problems. Heuristic methods, which obtain near optimum solutions in a realistic time, are important for solving the combinatorial optimization problems...
SATO Keiichi, IKEGUCHI Tohru, HASEGAWA Mikio, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   10 Mar 2003   
We have already proposed a new coding technique for deciding output values of the chaotic neural network (CNN) for solving quadratic assignment problems. According to the coding method, we can obtain good solutions, since the method always offers ...
Sato K., Ikeguchi T., Hasegawa M., Aihara K.
Proceedings of the IEICE General Conference   3 Mar 2003   
Iguchi Taiki, Horio Yoshihiko, Aihara Kazuyuki, Jin Kyung Ryeu
Proceedings of the IEICE General Conference   3 Mar 2003   
TANIGUCHI Takuya, HORIO Yoshihiko, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   28 Jan 2003   
An asynchronous pulse neural network model has been proposed. The model uses a dynamical spacio-temporal pattern in a network to process information. In such a network, precise timing of each action potential is important. Therefore, an analog cir...
Horio Yoshihiko, Aihara Kazuyuki
IEICE technical report. Neurocomputing   4 Nov 2002   
We propose a neuron-synapse IC chip-set for large-scale chaotic neural networks. We use switched-capacitor (SC) circuit techniques to implement a three-internal-state transiently-chaotic neural network model. The SC chaotic neuron chip faithfully ...
MIYANO T., IKUNAI Y., TOKUDA I., AIHARA K.
28 Aug 2002   
Shinozaki Jumpei, Horio Yoshihiko, Aihara Kazuyuki
IEICE technical report. Nonlinear problems   27 Aug 2002   
An asynchronous coding scheme for the inter-neuron pulse communication is proposed. The proposed scheme preserves the timing information of each pulse while small number of wires is required. Here, the firing time and the source of an action poten...
Fujiwara Tetsuya, Horio Yoshihiko, Aihara Kazuyuki
IEICE technical report. Nonlinear problems   27 Aug 2002   
This paper proposes a multi-scroll circuit that has more than two scroll structures in its chaotic attractor. The circuit is an extention of the previously proposed double-scroll circuit with floating-gate MOSFETs. In the proposed circuit, the hig...
Shinozaki Jumpei, Horio Yoshihiko, Aihara Kazuyuki
IEICE technical report. Circuits and systems   27 Aug 2002   
An asynchronous coding scheme for the inter-neuron pulse communication is proposed. The proposed scheme preserves the timing information of each pulse while small number of wires is required. Here, the firing time and the source of an action poten...
Fujiwara Tetsuya, Horio Yoshihiko, Aihara Kazuyuki
IEICE technical report. Circuits and systems   27 Aug 2002   
This paper proposes a multi-scroll circuit that has more than two scroll structures in its chaotic at tractor. The circuit is an extention of the previously proposed double-scroll circuit with floating-gate MOSFETs. In the proposed circuit, the hi...
Matsuda Kinya, Horio Yoshihiko, Aihara Kazuyuki
IEICE technical report. Nonlinear problems   9 Mar 2002   
A passive inductor is hard to be integrated by a standard CMOS semiconductor process became its large area and low Q value. In this case, it is very attractive to substitute the passive inductor by an active inductor. We have proposed the active i...
KUBOTA Shigeru, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   8 Mar 2002   
Obsessive-compulsive disorder (OCD) is characterized by compulsions such as recurrent hand washing or checking. Behavior therapy and neurosurgical treatment are used to improve the symptoms. In behavior therapy, patients are exposed to the cues wh...
Tanaka Kentaro, Horio Yoshihiko, Aihara Kazuyuki
IEICE technical report. Nonlinear problems   8 Mar 2002   
A quadratic assignment problem (QAP) is one of the NP-hard combinatorial optimization problems, which is very difficult to solve. Various heuristic methods to solve the QAP such as tabu search have been proposed. The tabu search technique has been...
SATO Keiichi, IKEGUCHI Tohru, HASEGAWA Mikio, AIHARA Kazuyuki
IEICE technical report. Nonlinear problems   8 Mar 2002   
We have already proposed a new coding technique for deciding output values in an optimization method for quadratic assignment problems (QAP) by the chaotic neural network (CNN). According to its coding method, we reported that we can obtain good s...
IKUNAI Y., MIYANO T., TOKUDA I., AIHARA K.
IEICE technical report. Nonlinear problems   8 Mar 2002