{"title":"Analysis on responses of chaotic Izhikevich neurons to periodic forcing","authors":"Yota Tsukamoto, Honami Tsushima, Tohru Ikeguchi","doi":"10.1587/nolta.14.677","DOIUrl":"https://doi.org/10.1587/nolta.14.677","url":null,"abstract":"The Izhikevich neuron model can reproduce various types of neurons, including chaotic neurons, by utilizing appropriate parameter sets. This study analyzes the responses of a periodically forced Izhikevich neuron with chaotic parameters using three measures—the diversity index, the coefficient of variation, and the local variation—to quantify interspike intervals (ISIs). The evaluation of ISIs combining these three measures clarifies the differences in neuronal activities, but evaluation using an individual measure cannot. In addition, we analyzed the change in the stability of the equilibrium points caused by a periodic input on a phase plane. The results indicate that in electrophysiologically feasible parameter sets, the stability of equilibrium points plays a crucial role in determining the critical amplitude around which irregular activities transition to regular ones. Thus, the relationship between neural behavior and the period and amplitude of the input current is contingent upon the existence and stability of equilibrium points.","PeriodicalId":54110,"journal":{"name":"IEICE Nonlinear Theory and Its Applications","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135843311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Seiichi Bun, T. I. Shiramatsu, Hirokazu Takahashi, T. Asai
{"title":"Active charge balancer for CMOS integration of an array of neural stimulators","authors":"Seiichi Bun, T. I. Shiramatsu, Hirokazu Takahashi, T. Asai","doi":"10.1587/nolta.14.319","DOIUrl":"https://doi.org/10.1587/nolta.14.319","url":null,"abstract":"","PeriodicalId":54110,"journal":{"name":"IEICE Nonlinear Theory and Its Applications","volume":"2015 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87808890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
So Hasegawa, Kazuki Kuwata, Aohan Li, Yoshito Watanabe, Y. Shoji, M. Hasegawa
{"title":"UAV data delivery and routing optimization in Piggyback Network","authors":"So Hasegawa, Kazuki Kuwata, Aohan Li, Yoshito Watanabe, Y. Shoji, M. Hasegawa","doi":"10.1587/nolta.14.66","DOIUrl":"https://doi.org/10.1587/nolta.14.66","url":null,"abstract":"","PeriodicalId":54110,"journal":{"name":"IEICE Nonlinear Theory and Its Applications","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84579861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Nonlinear trend of COVID-19 infection time series","authors":"F. Ishiyama","doi":"10.1587/nolta.14.165","DOIUrl":"https://doi.org/10.1587/nolta.14.165","url":null,"abstract":"","PeriodicalId":54110,"journal":{"name":"IEICE Nonlinear Theory and Its Applications","volume":"5 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85620871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tomo Hasegawa, H. Matsushita, T. Kousaka, H. Kurokawa
{"title":"Modified parallel nested-layer particle swarm optimization algorithm for fast bifurcation point detection and its software implementation","authors":"Tomo Hasegawa, H. Matsushita, T. Kousaka, H. Kurokawa","doi":"10.1587/nolta.14.308","DOIUrl":"https://doi.org/10.1587/nolta.14.308","url":null,"abstract":"","PeriodicalId":54110,"journal":{"name":"IEICE Nonlinear Theory and Its Applications","volume":"111 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73304078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Backdoor poisoning attacks against few-shot classifiers based on meta-learning","authors":"Ganma Kato, Chako Takahashi, Koutarou Suzuki","doi":"10.1587/nolta.14.491","DOIUrl":"https://doi.org/10.1587/nolta.14.491","url":null,"abstract":"","PeriodicalId":54110,"journal":{"name":"IEICE Nonlinear Theory and Its Applications","volume":"8 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84088166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ensemble kalman variational objective: a variational inference framework for sequential variational auto-encoders","authors":"Tsuyoshi Ishizone, Tomoyuki Higuchi, Kazuyuki Nakamura","doi":"10.1587/nolta.14.691","DOIUrl":"https://doi.org/10.1587/nolta.14.691","url":null,"abstract":"Time series model inference can be divided into modeling and optimization. Sequential VAEs have been studied as a modeling technique. As an optimization technique, methods combining variational inference (VI) and sequential Monte Carlo (SMC) have been proposed; however, they have two drawbacks: less particle diversity and biased gradient estimators. This paper proposes Ensemble Kalman Variational Objective (EnKO), a VI framework with the ensemble Kalman filter, to infer latent time-series models. Our proposed method efficiently learns the time-series models because of its particle diversity and unbiased gradient estimators. We demonstrate that our EnKO outperforms previous SMC-based VI methods in the predictive ability for several synthetic and real-world data sets.","PeriodicalId":54110,"journal":{"name":"IEICE Nonlinear Theory and Its Applications","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135843319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Special issue on recent advances in nonlinear problems","authors":"A. Tsuneda","doi":"10.1587/nolta.14.569","DOIUrl":"https://doi.org/10.1587/nolta.14.569","url":null,"abstract":"","PeriodicalId":54110,"journal":{"name":"IEICE Nonlinear Theory and Its Applications","volume":"52 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84689083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Special section on topological data analysis","authors":"I. Obayashi","doi":"10.1587/nolta.14.78","DOIUrl":"https://doi.org/10.1587/nolta.14.78","url":null,"abstract":"","PeriodicalId":54110,"journal":{"name":"IEICE Nonlinear Theory and Its Applications","volume":"17 2 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82777728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Bucolo, A. Buscarino, Luigi Fortuna, S. Gagliano
{"title":"Design of multivalued frequency response filters by using nonlinear feedback","authors":"M. Bucolo, A. Buscarino, Luigi Fortuna, S. Gagliano","doi":"10.1587/nolta.14.520","DOIUrl":"https://doi.org/10.1587/nolta.14.520","url":null,"abstract":"","PeriodicalId":54110,"journal":{"name":"IEICE Nonlinear Theory and Its Applications","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83397469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}