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AI 根据所提供的论文材料归类:摘要明确以结构化潜在结果、处理效应和尖锐零假设下的随机化检验为研究对象。

反馈分类问题

Causal inference for group-contaminated structured outcomes: observable quotients, lossless reduction and exact randomization inference

群变换污染下结构化结果的因果推断:可观测商空间、无损约化与精确随机化检验

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
Usef Faghihi
Amir Saki

群变换污染下结构化结果的因果推断:可观测商空间、无损约化与精确随机化检验

研究问题
结构化潜在结果可能受到个体特定且与处理有关的未知变换。论文研究哪些目标仍可观测,以及商空间约化何时保留完整统计信息。
方法与思路
作者用群轨道和最大不变量刻画可恢复目标,以条件分布判定约化充分性,并为格点图像构造不变量、核距离和配对交换检验。
材料陈述的贡献
摘要称给出可恢复性与无损约化的刻画,区分独立和共享群作用,并建立近似污染误差界及图像数据的随机化检验。
阅读关注点
应核对群作用的可测性、参数无关条件分布的要求、共享作用保留的相对信息,以及配对交换检验的随机化依据和尖锐零假设。
阅读边界
这是 arXiv 预印本,同行评审或期刊接收未经核实;摘要中的模拟拒绝率、功效和应用 p 值不能直接推广到其他污染机制。

原文摘要

Structured potential outcomes such as microscopy images may be recorded after an unknown, unit-specific transformation. If that transformation can depend on treatment, covariates or the intrinsic outcome, raw-coordinate analyses may mix biological effects with acquisition geometry. We study the unrestricted observation model X = Γ . Y(A) and characterize its observable information: a target is uniformly recoverable exactly when it is constant on group orbits, while a Borel maximal invariant retains every measurable invariant target. We then distinguish observability from statistical losslessness. A quotient-faithful reconstruction theorem shows that quotient reduction is sufficient for the full transformed experiment exactly when the conditional law of the raw observation given treatment, covariates and the quotient has a parameter-free version. Conditional Haar contamination on a compact group yields Blackwell equivalence as a special case; it is not imposed in the main model. We also separate independent site-specific product actions from shared diagonal actions and show why componentwise canonicalization can discard relative cross-site information. Under explicit metric and kernel regularity, an approximate-contamination theorem bounds quotient-law Wasserstein error and the induced perturbation of population maximum mean discrepancy. For finite-support multichannel lattice images, we construct a maximal invariant under integer translations and quarter turns, combine its characteristic Gaussian kernel with a complete paired-swap test, and retain the original simulations and RxRx1 HUVEC study. Under the sharp null, the quotient test rejected in 0.052 of simulation replicates; at unit effect strength its power was 0.992. The primary RxRx1 contrast had an enumerated paired-swap p-value of 0.0078.

笔记与分组
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