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关注这篇论文的作者
Bradley P. Carlin
Alan E. Gelfand

破纪录数据问题的参数似然推断

研究问题
当仅记录刷新极值或越过阈值的观测时,如何处理隐含缺失数据带来的高维积分,并允许观测依赖与均值变化?
方法与思路
作者迭代使用蒙特卡洛积分近似似然,必要时以 Gibbs 抽样处理多元积分,并用奥运跳高纪录说明估计与预测。
材料陈述的贡献
摘要称该方法可处理比既有纪录与阈值模型更复杂的参数模型,包括依赖观测和时变均值,并讨论模型选择与预测。
阅读关注点
应核对记录机制如何进入似然、蒙特卡洛近似精度与收敛要求,以及依赖结构、均值变化和预测如何具体建模。
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所给材料为稿件版本未注明的 OpenAlex 索引摘要;未说明计算代价、收敛条件或数值效果,不能推断实际精度。

原文摘要

In this paper we consider the analysis of record breaking data sets, where only observations that exceed, or only those that fall below, the current extreme value are recorded. Example application areas include industrial stress testing, meteorological analysis, sporting and athletic events, and oil and mining surveys. A closely related area is that of threshold modelling, where the observations are those that cross a certain threshold value. The inherent missing data structure present in these problems leads to likelihood functions that contain possibly high-dimensional integrals, rendering traditional maximum likelihood methods difficult or not feasible. Fortunately, we may obtain arbitrarily accurate approximations to the likelihood function by iteratively applying Monte Carlo integration methods (Geyer & Thompson, 1992). Subiteration using the Gibbs sampler may help to evaluate any multivariate integrals encountered during this process. This approach can handle far more sophisticated parametric models than have been used previously in record breaking and threshold data contexts. In particular, the methodology allows for observations that are dependent and subject to mean shifts over time. We present a numerical example involving records in Olympic high jump competition, where besides estimation we also address related issues in model selection and prediction.

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