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This paper develops an asymptotic distribution theory for an endogenous instrumentation approach in quantile predictive regressions when both generated covariates and persistent predictors are used. The generated covariates are obtained…

计量经济学 · 经济学 2024-04-23 Christis Katsouris

Supervised learning by extreme learning machines resp. neural networks with random weights is studied under a non-stationary spatial-temporal sampling design which especially addresses settings where an autonomous object moving in a…

机器学习 · 统计学 2021-09-02 Ansgar Steland

Vector autoregressive (VAR) models have become a staple in the analysis of multivariate time series and are formulated in the time domain as difference equations, with an implied covariance structure. In many contexts, it is desirable to…

统计方法学 · 统计学 2014-06-04 Scott H. Holan , Tucker S. McElroy , Guohui Wu

The paper considers simultaneous nonparametric inference for a wide class of M-regression models with time-varying coefficients. The covariates and errors of the regression model are tackled as a general class of nonstationary time series…

统计方法学 · 统计学 2024-09-10 Miaoshiqi Liu , Zhou Zhou

We propose and study M-estimation to estimate the parameters in the censored regression model in the presence of endogeneity, i.e., the Tobit model. In the course of this study, we follow two-stage procedures: the first stage consists of…

统计方法学 · 统计学 2025-05-13 Swati Shukla , Subhra Sankar Dhar , Shalabh

Stochastic processes have found numerous applications in science, as they are broadly used to model a variety of natural phenomena. Due to their intrinsic randomness and uncertainty, they are, however, difficult to characterize. Here, we…

Autoregressive exogenous (ARX) systems are the general class of input-output dynamical systems used for modeling stochastic linear dynamical systems (LDS) including partially observable LDS such as LQG systems. In this work, we study the…

机器学习 · 计算机科学 2021-08-30 Sahin Lale , Kamyar Azizzadenesheli , Babak Hassibi , Anima Anandkumar

This note studies the exponential convergence of input-output signals of discrete-time nonlinear systems composed of a feedback interconnection of a linear time-invariant system and a nonlinear uncertainty. Both the open-loop subsystems are…

系统与控制 · 电气工程与系统科学 2024-06-13 Lanlan Su , Di Zhao , Sei Zhen Khong

It has been recently observed that synthetic materials subjected to an external elastic stress give rise to scaling phenomena in the acoustic emission signal. Motivated by this experimental finding we develop a mesoscopic model in order to…

材料科学 · 物理学 2008-02-03 Stefano Zapperi , Alessandro Vespignani , H. Eugene Stanley

In this paper, we present a maximum likelihood method for estimating the parameters of a univariate Hawkes process with self-excitation or inhibition. Our work generalizes techniques and results that were restricted to the self-exciting…

统计理论 · 数学 2021-08-23 Anna Bonnet , Miguel Martinez Herrera , Maxime Sangnier

We study the asymptotic properties of the GLS estimator in multivariate regression with heteroskedastic and autocorrelated errors. We derive Wald statistics for linear restrictions and assess their performance. The statistics remains robust…

计量经济学 · 经济学 2025-03-19 Koichiro Moriya , Akihiko Noda

This work deals with the problem of simultaneous regulation and model parameter estimation in adaptive model predictive control. We propose an adaptive model predictive control and conditions which guarantee a persistently exciting closed…

系统与控制 · 电气工程与系统科学 2021-11-22 Sven Brüggemann , Robert R. Bitmead

We report a nonlinear acoustic system displaying excitability. The considered system is a magnetostrictive material where acoustic waves are parametrically generated. For a set of parameters, the system presents homoclinic and heteroclinic…

适应与自组织系统 · 物理学 2009-11-11 Victor J. Sanchez-Morcillo , J. Redondo , J. Martinez-Mora

We consider the problem of predicting several response variables using the same set of explanatory variables. This setting naturally induces a group structure over the coefficient matrix, in which every explanatory variable corresponds to a…

统计方法学 · 统计学 2019-10-03 Aviv Navon , Saharon Rosset

This paper proposes a novel low-rank approximation to the multivariate State-Space Model. The Stochastic Partial Differential Equation (SPDE) approach is applied component-wise to the independent-in-time Mat\'ern Gaussian innovation term in…

统计方法学 · 统计学 2025-09-17 Jacopo Rodeschini , Lorenzo Tedesco , Francesco Finazzi , Philipp Otto , Alessandro Fassò

In this paper, we propose a self-triggered formulation of Model Predictive Control for continuous-time nonlinear input-affine networked control systems. Our control method specifies not only when to execute control tasks but also provides a…

最优化与控制 · 数学 2016-11-17 Kazumune Hashimoto , Shuichi Adachi , Dimos. V. Dimarogonas

In this paper, a self-triggered adaptive model predictive control (MPC) algorithm is proposed for constrained discrete-time nonlinear systems subject to parametric uncertainties and additive disturbances. To bound the parametric…

最优化与控制 · 数学 2019-12-17 Kunwu Zhang , Changxin Liu , Yang Shi

The estimation law of unknown parameters vector ${\theta}$ is proposed for one class of nonlinearly parametrized regression equations $y\left( t \right) = \Omega \left( t \right)\Theta \left( \theta \right)$. We restrict our attention to…

系统与控制 · 电气工程与系统科学 2023-08-22 Anton Glushchenko , Konstantin Lastochkin

The analysis of spatial extremes requires the joint modeling of a spatial process at a large number of stations and max-stable processes have been developed as a class of stochastic processes suitable for studying spatial extremes. Spatial…

统计方法学 · 统计学 2012-09-28 Soyoung Jeon , Richard L. Smith

A new multivariate density estimator for stationary sequences is obtained by Fourier inversion of the thresholded empirical characteristic function. This estimator does not depend on the choice of parameters related to the smoothness of the…

统计理论 · 数学 2023-05-24 Sinda Ammous , Jérôme Dedecker , Céline Duval