跳到正文
← 返回论文列表与筛选
阅读说明

本页整理公开书目信息,不生成学术质量评分。AI 解读根据题名及所注明的摘要或原文片段生成,未完成全文核验,可能有误;具体假设、证明与结论请核对原文。摘要保留来源文本,未经模型改写。

DOI 首次登记不等于接收或发表日期。部分更正、评论等条目没有独立摘要;缺少可靠材料时保留待补状态。

本页为预印本版本;arXiv 收录、作者填写的期刊信息以及作者既有发表经历,都不单独证明本篇已接收。作者发表记录按 OpenAlex 身份与完整姓名、本站覆盖期刊 ISSN 及正式卷期核对,只展示已核实例,档案仍可能误合并。

引用量采用 OpenAlex 单条关联记录,不合计多个记录;关联记录可能包含正式发表版本,不等于此版本单独引用。缺失不视为零,引用指标不代表论文质量。

关注作者按书目中的完整姓名匹配,同名和姓名变体需人工辨别。相关论文先按共享细分方向和具体方法排列,再参考通用方法与发表日期。

分类依据与纠错

AI 根据所提供的论文材料归类:摘要以随机实验的长期与短期处理效应为核心,研究因果实验中的代理指标构造。

反馈分类问题

正在核对关联版本…

代码、数据与补充材料

正在核对对应版本的资源…

关注这篇论文的作者
Nilesh Tripuraneni
Lee Richardson
Alexander D'Amour
Jacopo Soriano
Steve Yadlowsky

利用历史实验选择代理指标

研究问题
长期结果难以在短期随机实验中准确测量时,如何利用历史实验构造短期代理指标,使其有效支持当前实验的决策?
方法与思路
作者将代理指标构造转化为依赖潜在处理效应和噪声水平的组合优化问题,再对历史实验的观测效应去噪以估计所需输入。
材料陈述的贡献
摘要称,最优代理指标应随当前实验样本量或有效噪声水平变化,并在工业推荐系统的实验集合中相较若干基准取得良好表现。
阅读关注点
应核对最优性的目标函数、实验总体同质性的含义、历史效应去噪方法,以及历史实验向新实验迁移所需的稳定性条件。
阅读边界
这是 arXiv 预印本,同行评审及期刊接收未核实;摘要未说明长期效应代理的识别条件,也未提供样本外评估的具体数值。

原文摘要

In many randomized experiments, the treatment effect of the long-term metric (i.e. the primary outcome of interest) is often difficult or infeasible to measure. Such long-term metrics are often slow to react to changes and sufficiently noisy they are challenging to faithfully estimate in short-horizon experiments. A common alternative is to measure several short-term proxy metrics in the hope they closely track the long-term metric -- so they can be used to effectively guide decision-making in the near-term. We introduce a new statistical framework to both define and construct an optimal proxy metric for use in a homogeneous population of randomized experiments. Our procedure first reduces the construction of an optimal proxy metric in a given experiment to a portfolio optimization problem which depends on the true latent treatment effects and noise level of experiment under consideration. We then denoise the observed treatment effects of the long-term metric and a set of proxies in a historical corpus of randomized experiments to extract estimates of the latent treatment effects for use in the optimization problem. One key insight derived from our approach is that the optimal proxy metric for a given experiment is not apriori fixed; rather it should depend on the sample size (or effective noise level) of the randomized experiment for which it is deployed. To instantiate and evaluate our framework, we employ our methodology in a large corpus of randomized experiments from an industrial recommendation system and construct proxy metrics that perform favorably relative to several baselines.

笔记与分组
相关领域论文