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arXiv 2310.04774math.STstat.TH
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响应缺失的广义线性模型中的可更新估计

Updatable Estimation in Generalized Linear Models with Missing Response

Xianhua Zhang, Lu lin, Qihua Wang

AI总结:

本文针对流数据下响应随机缺失的广义线性模型,提出可更新逆概率加权估计及两步在线算法,证明其具备神谕性质,数值实验显示其性能与批量学习器相当。

摘要:

本文针对流数据集中响应随机缺失的广义线性模型,提出了一种可更新逆概率加权(UIPW)估计方法,并给出了对应的两步在线更新算法。第一步构建倾向函数参数的可更新估计量,进而得到倾向函数的可更新估计;第二步提出UIPW估计量,以每次观测处更新后的倾向函数值的倒数作为权重,估计目标参数。该UIPW估计放宽了对数据批次数量的约束,具有普适性。理论证明,所提估计量具有相合性与渐近正态性,且渐近方差与神谕估计量(oracle estimator)相同,具备神谕性质。通过模拟研究与真实数据分析验证了估计量的有限样本性能,所有数值研究均表明UIPW估计量的表现与批量学习器相当。

英文摘要:

This paper develops an updatable inverse probability weighting (UIPW) estimation for the generalized linear models with response missing at random in streaming data sets. A two-step online updating algorithm is provided for the proposed method. In the first step we construct an updatable estimator for the parameter in propensity function and hence obtain an updatable estimator of the propensity function; in the second step we propose an UIPW estimator with the inverse of the updating propensity function value at each observation as the weight for estimating the parameter of interest. The UIPW estimation is universally applicable due to its relaxation on the constraint on the number of data batches. It is shown that the proposed estimator is consistent and asymptotically normal with the same asymptotic variance as that of the oracle estimator, and hence the oracle property is obtained. The finite sample performance of the proposed estimator is illustrated by the simulation and real data analysis. All numerical studies confirm that the UIPW estimator performs as well as the batch learner.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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