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arXiv 1908.07193cs.LGstat.APstat.MEstat.ML
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结构化推理的反事实分布回归

Counterfactual Distribution Regression for Structured Inference

Royal Holloway University London(伦敦大学皇家霍洛威学院);University College London(伦敦大学学院);Gatsby Computational Neuroscience Unit(盖茨比计算神经科学组)

Nicolo Colombo, Ricardo Silva, Soong M Kang, Arthur Gretton

摘要:

我们考虑的问题,其中系统接收外部\emph{perturbations}不时。例如,该系统可以是训练网络,其中特定线路在没有警告的情况下反复中断,从而对乘客行为产生影响。目标是预测系统在特定兴趣点的行为变化,例如受影响铁路车站周围的乘客流量。我们假设可用的数据提供了系统在其“自然状态”下运行的记录(例如,没有中断的训练网络)和关于发生扰动的情况的数据。推理问题是如何与特定的协变量,如位置和时间的扰动有关的信息,可以概括为预测新的扰动的影响。我们从映射的角度来处理这个问题,从没有中断的系统行为的反事实分布到被中断的系统的分布。为此设置开发了\emph{distribution regression}的变体。

英文摘要:

We consider problems in which a system receives external \emph{perturbations} from time to time. For instance, the system can be a train network in which particular lines are repeatedly disrupted without warning, having an effect on passenger behavior. The goal is to predict changes in the behavior of the system at particular points of interest, such as passenger traffic around stations at the affected rails. We assume that the data available provides records of the system functioning at its "natural regime" (e.g., the train network without disruptions) and data on cases where perturbations took place. The inference problem is how information concerning perturbations, with particular covariates such as location and time, can be generalized to predict the effect of novel perturbations. We approach this problem from the point of view of a mapping from the counterfactual distribution of the system behavior without disruptions to the distribution of the disrupted system. A variant on \emph{distribution regression} is developed for this setup.

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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