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Brownian motion of an array of harmonically coupled particles subject to a periodic substrate potential and driven by an external bias is investigated. In the linear response limit (small bias), the coupling between particles may enhance…

统计力学 · 物理学 2009-10-31 Zhigang Zheng , Bambi Hu , Gang Hu

The logarithmic correction for the order of the maximum of a two-type reducible branching Brownian motion on the real line exhibits a double jump when the parameters (the ratio of the diffusion coefficients of the two types of particles,…

概率论 · 数学 2024-09-05 Heng Ma , Yan-Xia Ren

We consider a general d-dimensional Levy-type process with killing. Combining the classical Dyson series approach with a novel polynomial expansion of the generator A(t) of the Levy-type process, we derive a family of asymptotic…

计算金融 · 定量金融 2014-12-01 Matthew Lorig , Stefano Pagliarani , Andrea Pascucci

Consider continuous-time linear switched systems on R^n associated with compact convex sets of matrices. When the system is irreducible and the largest Lyapunov exponent is equal to zero, there always exists a Barabanov norm (i.e. a norm…

最优化与控制 · 数学 2014-09-17 Yacine Chitour , Moussa Gaye , Paolo Mason

Less than 10 meters deep, shallow landslides are rapidly moving and strongly dangerous slides. In the present work, the probabilistic distribution of the landslide detachment points within a valley is modelled as a spatial Poisson point…

We consider a Markov jump process on a general state space to which we apply a time-dependent weak perturbation over a finite time interval. By martingale-based stochastic calculus, under a suitable exponential moment bound for the…

概率论 · 数学 2024-05-14 Alessandra Faggionato , Vittoria Silvestri

We consider a stochastic process driven by a diffusion and jumps. We devise a technique, which is based on a discrete record of observations, for identifying the times when jumps larger than a suitably defined threshold occurred. The…

统计理论 · 数学 2007-06-13 Cecilia Mancini

We deal with a planar random flight $\{(X(t),Y(t)),0<t\leq T\}$ observed at $n+1$ equidistant times $t_i=i\Delta_n,i=0,1,...,n$. The aim of this paper is to estimate the unknown value of the parameter $\lambda$, the underlying rate of the…

统计理论 · 数学 2007-06-13 Alessandro De Gregorio

This work aims to estimate the drift and diffusion functions in stochastic differential equations (SDEs) driven by a particular class of L\'evy processes with finite jump intensity, using neural networks. We propose a framework that…

机器学习 · 统计学 2025-07-10 Jose-Hermenegildo Ramirez-Gonzalez , Ying Sun

In this paper we consider Poisson loglinear models with linear constraints (LMLC) on the expected table counts. Multinomial and product multinomial loglinear models can be obtained by considering that some marginal totals (linear…

统计理论 · 数学 2014-03-26 Nirian Martin , Leandro Pardo

We prove a boundary Harnack inequality for jump-type Markov processes on metric measure state spaces, under comparability estimates of the jump kernel and Urysohn-type property of the domain of the generator of the process. The result holds…

概率论 · 数学 2017-02-15 Krzysztof Bogdan , Takashi Kumagai , Mateusz Kwaśnicki

We develop dependent hierarchical normalized random measures and apply them to dynamic topic modeling. The dependency arises via superposition, subsampling and point transition on the underlying Poisson processes of these measures. The…

机器学习 · 计算机科学 2012-06-22 Changyou Chen , Nan Ding , Wray Buntine

In this paper we study the Poisson Hypothesis, which is a device to analyze approximately the behavior of large queueing networks. We prove it in some simple limiting cases. We show in particular that the corresponding dynamical system,…

概率论 · 数学 2007-05-23 A. Rybko , S. Shlosman

Consider semiparametric models that display local asymptotic exponentiality (Ibragimov and Has'minskii (1981)), an asymptotic property of the likelihood associated with discontinuities of densities. Our interest goes to estimation of the…

统计理论 · 数学 2013-12-19 Bas Kleijn , Bartek Knapik

We study the quenched invariance principle for random conductance models with long range jumps on $\Z^d$, where the transition probability from $x$ to $y$ is, on average, comparable to $|x-y|^{-(d+\alpha)}$ with $\alpha\in (0,2)$ but is…

概率论 · 数学 2020-05-01 Xin Chen , Takashi Kumagai , Jian Wang

Piecewise-deterministic Markov processes form a general class of non-diffusion stochastic models that involve both deterministic trajectories and random jumps at random times. In this paper, we state a new characterization of the jump rate…

统计方法学 · 统计学 2017-05-03 Romain Azaïs , Alexandre Genadot

Uniform large deviation principles for positive functionals of all equivalent types of infinite dimensional Brownian motions acting together with a Poisson random measure are established. The core of our approach is a variational…

概率论 · 数学 2014-03-13 Vasileios Maroulas

We consider stability analysis of constrained switching linear systems in which the dynamics is unknown and whose switching signal is constrained by an automaton. We propose a data-driven Lyapunov framework for providing probabilistic…

系统与控制 · 电气工程与系统科学 2022-07-15 Adrien Banse , Zheming Wang , Raphaël M. Jungers

In this paper, we consider a type of continuous time random walk model where the jump length is correlated with the waiting time. The asymptotic behaviors of the coupled jump probability density function in the Fourier-Laplace domain are…

统计力学 · 物理学 2015-06-16 Long Shi , Zuguo Yu , Zhi Mao , Aiguo Xiao , Hailan Huang

We study the statistical properties of jump processes in a bounded domain that are driven by Poisson white noise. We derive the corresponding Kolmogorov-Feller equation and provide a general representation for its stationary solutions.…

统计力学 · 物理学 2018-10-16 S. I. Denisov , Yu. S. Bystrik