Results 21 to 30 of about 1,701,850 (325)
Regularized Zero-Variance Control Variates
Bayesian Analysis, 2023 Zero-variance control variates (ZV-CV) are a post-processing method to reduce the variance of Monte Carlo estimators of expectations using the derivatives of the log target. Once the derivatives are available, the only additional computational effort lies in solving a linear regression problem.
South, LF +3 more
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Proceedings of the American Mathematical Society, 1981 A function U : R + → R + U:{R^ + } \to {R^ + } is said to be Π \Pi -regularly varying with exponent α \alpha if U ( x )
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A Note on Second Order Conditions in Extreme Value Theory: Linking General and Heavy Tail Conditions
Revstat Statistical Journal, 2007 Second order conditions ruling the rate of convergence in any first order condition involving regular variation and assuring a unified extreme value limiting distribution function for the sequence of maximum values, linearly normalized, have appeared in
M. Isabel Fraga Alves +3 more
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Electronic Journal of Qualitative Theory of Differential Equations, 2016 In this paper we consider the rate of convergence of solutions of a scalar ordinary differential equation which is a perturbed version of an autonomous equation with a globally stable equilibrium.
John Appleby, Denis Patterson
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Limit laws for random vectors with an extreme component [PDF]
, 2007 Models based on assumptions of multivariate regular variation and hidden regular variation provide ways to describe a broad range of extremal dependence structures when marginal distributions are heavy tailed.
Heffernan, Janet E., Resnick, Sidney I.
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Large noise in variational regularization [PDF]
Transactions of Mathematics and Its Applications, 2018 Abstract In this paper we consider variational regularization methods for inverse problems with large noise that is in general unbounded in the image space of the forward operator. We introduce a Banach space setting that allows to define a reasonable notion of solutions for more general noise in a larger space provided that one has ...
Burger, Martin +2 more
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Electronic Journal of Qualitative Theory of Differential Equations, 2012 In this paper we consider the global and local stability and instability of solutions of a scalar nonlinear differential equation with non-negative solutions.
John Appleby, Jian Cheng
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A note on asymptotics and nonoscillation of linear $q$-difference equations
Electronic Journal of Qualitative Theory of Differential Equations, 2012 We study the linear second order $q$-difference equation $y(q^2t)+a(t)y(qt)+b(t)y(t)=0$ on the $q$-uniform lattice $\{q^k:k\in\mathbb{N}_0\}$ with $q>1$, where $b(t)\ne0$. We establish various conditions guaranteeing the existence of solutions satisfying
Pavel Řehák
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Sentiment analysis of consumer reviews – a comparison of organic and regular food products usage [PDF]
Rajagiri Management Journal, 2020 Purpose – This study aims to compare online review characteristics, review length and review sentiment score between “organic” and “regular” food products.
B. Rajeswari +3 more
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Topological regular variation: I. Slow variation
Topology and its Applications, 2010 The authors extend and unify the multivariate regular variation literature by a reformulation in the language of topological dynamics. They use metric groups and study convergence and divergence of self-homeomorphisms in a normed topological group. The authors define a general form of slow variation on a metric space \(S\) that includes and extends ...
Bingham, N.H., Ostaszewski, A.J.
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