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AI 根据所提供的论文材料归类:摘要明确允许观测依赖及均值随时间变化,并讨论纪录序列预测,具有时间序列建模依据。

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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
当仅记录突破当前极值或跨越阈值的观测时,如何处理隐含缺失数据导致的高维似然积分,并容纳观测依赖与随时间的均值变化?
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 抽样子迭代计算多元积分,并用奥运跳高纪录展示估计、模型选择和预测。
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结构,包括相关观测和随时间的均值位移,并可获得任意精确的似然近似。
阅读关注点
应核对纪录或阈值观测的生成机制、积分与迭代算法、近似精度和收敛条件,以及依赖和均值位移如何建模并用于预测。
阅读边界
仅据 OpenAlex 索引摘要,稿件版本未注明,不能推断刊本变化;任意精确近似的条件与计算成本未说明,例子也不足以证明复杂模型必然可识别或预测更好。

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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