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Many natural and physical processes display long memory and extreme events. In these systems, the measured time series is invariably contaminated by noise. As the extreme events display large deviation from the mean behaviour, the noise…

元胞自动机与格子气 · 物理学 2021-11-23 Dayal Singh , M. S. Santhanam

What is the physiological basis of long-term memory? The prevailing view in neuroscience attributes changes in synaptic efficacy to memory acquisition. This view implies that stable memories correspond to stable connectivity patterns.…

神经元与认知 · 定量生物学 2019-10-09 Lee Susman , Naama Brenner , Omri Barak

The lifetime of a metastable state in the transient dynamics of an overdamped Brownian particle is analyzed, both in terms of the mean first passage time and by means of the mean growth rate coefficient. Both quantities feature non…

统计力学 · 物理学 2009-11-11 A. Fiasconaro , B. Spagnolo , S. Boccaletti

Despite much research targeted at enabling conventional machine learning models to continually learn tasks and data distributions sequentially without forgetting the knowledge acquired, little effort has been devoted to account for more…

机器学习 · 计算机科学 2021-06-11 Sandra Servia-Rodriguez , Cecilia Mascolo , Young D. Kwon

We provide a simple and realistic model to study memory effects in a lossy bosonic quantum channel over arbitrary number of uses. The noise correlation among different uses is introduced by contiguous modes interactions which results in an…

量子物理 · 物理学 2009-11-13 O. V. Pilyavets , V. G. Zborovskii , S. Mancini

The steady state of a Langevin equation with short ranged memory and coloured noise is analyzed. When the fluctuation-dissipation theorem of second kind is not satisfied, the dynamics is irreversible, i.e. detailed balance is violated. We…

统计力学 · 物理学 2015-05-13 Andrea Puglisi , Dario Villamaina

This work proposes a general framework for capturing noise-driven transitions in spatially extended non-equilibrium systems and explains the emergence of coherent patterns beyond the instability onset. The framework relies on stochastic…

动力系统 · 数学 2024-12-16 Mickaël D. Chekroun , Honghu Liu , James C. McWilliams

We consider the stabilization of an unstable discrete-time linear system that is observed over a channel corrupted by continuous multiplicative noise. Our main result shows that if the system growth is large enough, then the system cannot…

系统与控制 · 计算机科学 2016-12-22 Jian Ding , Yuval Peres , Gireeja Ranade , Alex Zhai

We propose that memory effects in the conductivity of metallic systems can be produced by the same two levels systems that are responsible for the 1/f noise. Memory effects are extremely long-lived responses of the conductivity to changes…

介观与纳米尺度物理 · 物理学 2015-06-18 Yonah Lemonik , Igor Aleiner

Linear arrays of trapped and laser cooled atomic ions are a versatile platform for studying emergent phenomena in strongly-interacting many-body systems. Effective spins are encoded in long-lived electronic levels of each ion and made to…

Lexically constrained decoding for machine translation has shown to be beneficial in previous studies. Unfortunately, constraints provided by users may contain mistakes in real-world situations. It is still an open question that how to…

计算与语言 · 计算机科学 2021-01-27 Huayang Li , Guoping Huang , Deng Cai , Lemao Liu

Using Brownian dynamics simulations we perform a systematic investigation of the shear-induced migration of colloidal particles subject to Poiseuille flow in both cylindrical and planar geometry. We find that adding an attractive component…

软凝聚态物质 · 物理学 2017-12-27 P. Marmet , A. Scacchi , J. M. Brader

Natural spatiotemporal processes can be highly non-stationary in many ways, e.g. the low-level non-stationarity such as spatial correlations or temporal dependencies of local pixel values; and the high-level variations such as the…

机器学习 · 计算机科学 2019-04-23 Yunbo Wang , Jianjin Zhang , Hongyu Zhu , Mingsheng Long , Jianmin Wang , Philip S Yu

Repeated/cyclic shearing can drive amorphous solids to a steady-state encoding a memory of the applied strain amplitude. However, recent experiments find that the effect of such memory formation on the mechanical properties of the bulk…

软凝聚态物质 · 物理学 2022-06-28 Sebanti Chattopadhyay , Sayantan Majumdar

The hyperbolic dependence of catalytic rate on substrate concentration is a classical result in enzyme kinetics, quantified by the celebrated Michaelis-Menten equation. The ubiquity of this relation in diverse chemical and biological…

分子网络 · 定量生物学 2021-02-24 Ashutosh Kumar , R. Adhikari , Arti Dua

The interplay between nonlinear dynamic systems and noise has proved to be of great relevance in several application areas. In this presentation, we focus on the areas of information transmission and storage. We review some recent results…

其他凝聚态物理 · 物理学 2017-11-22 P. I. Fierens , G. A. Patterson , A. A. García , D. F. Grosz

The brain is a noisy system subject to energy constraints. These facts are rarely taken into account when modelling artificial neural networks. In this paper, we are interested in demonstrating that those factors can actually lead to the…

神经与进化计算 · 计算机科学 2017-09-26 Eliott Coyac , Vincent Gripon , Charlotte Langlais , Claude Berrou

A noise source model, consisting of a pulse sequence at random times with memory, is presented. By varying the memory we can obtain variable randomness of the stochastic process. The delay time between pulses, i. e. the noise memory,…

统计力学 · 物理学 2009-09-29 O. Chichigina , D. Valenti , B. Spagnolo

In this paper we extend our investigations on noise-assisted storage devices through the experimental study of a loop composed of a single Schmitt trigger and an element that introduces a finite delay. We show that such a system allows the…

适应与自组织系统 · 物理学 2015-05-27 G. Bellomo , G. A. Patterson , P. I. Fierens , D. F. Grosz

We study the learning of an external signal by a neural network and the time to forget it when this network is submitted to noise. The presentation of an external stimulus to the recurrent network of binary neurons may change the state of…

概率论 · 数学 2020-06-11 Pascal Helson