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We consider the problem of optimizing a real-valued continuous function $f$ using a Bayesian approach, where the evaluations of $f$ are chosen sequentially by combining prior information about $f$, which is described by a random process…

最优化与控制 · 数学 2011-11-22 Romain Benassi , Julien Bect , Emmanuel Vazquez

In this paper we consider fully Bayesian inference in general state space models. Existing particle Markov chain Monte Carlo (MCMC) algorithms use an augmented model that takes into account all the variable sampled in a sequential Monte…

统计方法学 · 统计学 2014-07-31 Christopher K. Carter , Eduardo F. Mendes , Robert Kohn

SMC (Sequential Monte Carlo) is a class of Monte Carlo algorithms for filtering and related sequential problems. Gerber and Chopin (2015) introduced SQMC (Sequential quasi-Monte Carlo), a QMC version of SMC. This paper has two objectives:…

统计计算 · 统计学 2017-06-19 Nicolas Chopin , Mathieu Gerber

We propose a Monte Carlo algorithm to sample from high dimensional probability distributions that combines Markov chain Monte Carlo and importance sampling. We provide a careful theoretical analysis, including guarantees on robustness to…

统计计算 · 统计学 2019-09-18 Giacomo Zanella , Gareth Roberts

This paper studies multi-level stochastic approximation algorithms. Our aim is to extend the scope of the multilevel Monte Carlo method recently introduced by Giles (Giles 2008) to the framework of stochastic optimization by means of…

概率论 · 数学 2014-08-12 Noufel Frikha

We consider the problem of estimating expectations with respect to a target distribution with an unknown normalizing constant, and where even the unnormalized target needs to be approximated at finite resolution. This setting is ubiquitous…

数值分析 · 数学 2023-03-23 Kody J. H. Law , Neil Walton , Shangda Yang , Ajay Jasra

We present simple conditions under which the limiting genealogical process associated with a class of interacting particle systems with non-neutral selection mechanisms, as the number of particles grows, is a time-rescaled Kingman…

统计计算 · 统计学 2020-12-08 Suzie Brown , Paul A. Jenkins , Adam M. Johansen , Jere Koskela

We introduce a framework for inference in general state-space hidden Markov models (HMMs) under likelihood misspecification. In particular, we leverage the loss-theoretic perspective of Generalized Bayesian Inference (GBI) to define…

统计方法学 · 统计学 2020-10-22 Ayman Boustati , Ömer Deniz Akyildiz , Theodoros Damoulas , Adam M. Johansen

We introduce a general form of sequential Monte Carlo algorithm defined in terms of a parameterized resampling mechanism. We find that a suitably generalized notion of the Effective Sample Size (ESS), widely used to monitor algorithm…

统计计算 · 统计学 2016-01-08 Nick Whiteley , Anthony Lee , Kari Heine

Markov Chain Monte Carlo (MCMC) methods have become a cornerstone of many modern scientific analyses by providing a straightforward approach to numerically estimate uncertainties in the parameters of a model using a sequence of random…

其他统计学 · 统计学 2020-03-10 Joshua S. Speagle

Particle filtering is a standard Monte-Carlo approach for a wide range of sequential inference tasks. The key component of a particle filter is a set of particles with importance weights that serve as a proxy of the true posterior…

机器学习 · 计算机科学 2022-09-02 Ruizhi Deng , Greg Mori , Andreas M. Lehrmann

The particle filter (PF), also known as sequential Monte Carlo (SMC), approximates high-dimensional probability distributions and their normalizing constants in the discrete-time setting. To reduce the variance of the Monte Carlo…

统计计算 · 统计学 2026-05-05 Jianfeng Lu , Yuliang Wang

This paper extends the Multilevel Monte Carlo variance reduction technique to nonlinear filtering. In particular, Multilevel Monte Carlo is applied to a certain variant of the particle filter, the Ensemble Transform Particle Filter. A key…

数值分析 · 数学 2016-02-24 Alastair Gregory , Colin Cotter , Sebastian Reich

A change in the number of motor units that operate a particular muscle is an important indicator for the progress of a neuromuscular disease and the efficacy of a therapy. Inference for realistic statistical models of the typical data…

统计方法学 · 统计学 2018-04-12 Simon Taylor , Chris Sherlock , Gareth Ridall , Paul Fearnhead

It is often necessary to make sampling-based statistical inference about many probability distributions in parallel. Given a finite computational resource, this article addresses how to optimally divide sampling effort between the samplers…

统计方法学 · 统计学 2015-02-18 Nicholas Heard , Melissa Turcotte

We consider a statistical test whose p-value can only be approximated using Monte Carlo simulations. We are interested in deciding whether the p-value for an observed data set lies above or below a given threshold such as 5%. We want to…

统计方法学 · 统计学 2019-10-10 Dong Ding , Axel Gandy , Georg Hahn

The paper is devoted to the numerical solutions of fractional PDEs based on its probabilistic interpretation, that is, we construct approximate solutions via certain Monte Carlo simulations. The main results represent the upper bound of…

概率论 · 数学 2020-12-29 Vassili Kolokoltsov , Feng Lin , Aleksandar Mijatovic

This paper proposes a family of weighted batch means variance estimators, which are computationally efficient and can be conveniently applied in practice. The focus is on Markov chain Monte Carlo simulations and estimation of the asymptotic…

统计理论 · 数学 2018-05-23 Ying Liu , James M. Flegal

Statistical inference for discretely observed jump-diffusion processes is a complex problem which motivates new methodological challenges. Thus existing approaches invariably resort to time-discretisations which inevitably lead to…

统计方法学 · 统计学 2023-03-02 Flávio B. Gonçalves , Krzysztof G. Łatuszyński , Gareth O. Roberts

Most Markov chain Monte Carlo methods operate in discrete time and are reversible with respect to the target probability. Nevertheless, it is now understood that the use of non-reversible Markov chains can be beneficial in many contexts. In…

统计方法学 · 统计学 2021-02-23 Chris Sherlock , Alexandre H. Thiery