Sequential Monte Carlo Methods in Practice

Sequential Monte Carlo Methods in Practice
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DOI:
10.1198/tech.2003.s23
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发表时间:
2003-02
期刊:
影响因子:
2.5
通讯作者:
Pradipta Sarkar
Pradipta Sarkar
中科院分区:
工程技术3区
文献类型:
--
作者:
Pradipta Sarkar

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序贯重要抽样(cid:2)SIS(cid:3)(cid:4)rst开发于(cid:5)(cid:6)(cid:7)(cid:8)分子模拟虽然半个世纪过去了,(cid:10)SIS方法仍然是最通用和最强大的方法之一,(cid:11)模拟和优化链状聚合物的有效手段(cid:9)In(cid:5)(cid:6)(cid:6)(cid:8)s(cid:10)统计学家重新发明了同样的方法,(cid:11)eral form(cid:10)提出了一些改进意见(cid:10)并将其应用于更广泛的问题(cid:9)在本文中(cid:10)沿着对方法的历史说明(cid:10)我们提出了一个理论框架(cid:11)工作的SIS与rescue(cid:9)我们强调加权样本的基本概念(cid:10)顺序构建的基本思想(cid:2)up(cid:10)重新加权和重新加权的重要技术(cid:10)和各种其他方法(cid:10)e(cid:9)g(cid:9)(cid:10)部分排斥控制和边缘化(cid:10)对于im(cid:11)证明一个序贯重要性抽样器(cid:9)为了说明(cid:10)我们展示如何分析一个状态(cid:11)空间模型与SIS和如何处理的conc(cid:11)具有边缘化(cid:10)响应(cid:10)和拒绝控制技术(cid:9)的动态线性模型我们报告了两个(cid:11)杂波中的三维目标跟踪(cid:9)
Sequential importance sampling (cid:2)SIS(cid:3) was (cid:4)rst developed in (cid:5)(cid:6)(cid:7)(cid:8)s for molecular simulation(cid:9) Although half a century has passed by(cid:10) the SIS methodology remains one of the most versatile and power(cid:11) ful means for the simulation and optimization of chain polymers(cid:9) In (cid:5)(cid:6)(cid:6)(cid:8)s(cid:10) statisticians reinvented the same methodology in a more gen(cid:11) eral form(cid:10) brought forth a number of enhancements(cid:10) and applied it to a much broader spectrum of problems(cid:9) In this article(cid:10) along with a historical account of the methodology(cid:10) we present a theoretical frame(cid:11) work for the SIS with resampling(cid:9) We emphasize the basic concept of a weighted sample(cid:10) the fundamental idea of sequential build(cid:2)up(cid:10) the important technique of reweighting and resampling(cid:10) and various other methods(cid:10) e(cid:9)g(cid:9)(cid:10) the partial rejection control and marginalization(cid:10) for im(cid:11) proving a sequential importance sampler(cid:9) To illustrate(cid:10) we show how to analyze a state(cid:11)space model with SIS and how to treat the con(cid:11) ditional dynamic linear model with marginalization(cid:10) resampling(cid:10) and rejection control techniques(cid:9) We report some simulation results for two(cid:11)dimensional target tracking in clutter(cid:9)