SELECTIVE INFERENCE WITH A RANDOMIZED RESPONSE

Inspired by sample splitting and the reusable holdout introduced in the field of differential privacy, we consider selective inference with a randomized response. We discuss two major advantages of using a randomized response for model selection. First, the selectively valid tests are more powerful...

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Veröffentlicht in:The Annals of statistics 2018-04, Vol.46 (2), p.679-710
Hauptverfasser: Tian, Xiaoying, Taylor, Jonathan
Format: Artikel
Sprache:eng
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Zusammenfassung:Inspired by sample splitting and the reusable holdout introduced in the field of differential privacy, we consider selective inference with a randomized response. We discuss two major advantages of using a randomized response for model selection. First, the selectively valid tests are more powerful after randomized selection. Second, it allows consistent estimation and weak convergence of selective inference procedures. Under independent sampling, we prove a selective (or privatized) central limit theorem that transfers procedures valid under asymptotic normality without selection to their corresponding selective counterparts. This allows selective inference in nonparametric settings. Finally, we propose a framework of inference after combining multiple randomized selection procedures. We focus on the classical asymptotic setting, leaving the interesting high-dimensional asymptotic questions for future work.
ISSN:0090-5364
2168-8966
DOI:10.1214/17-AOS1564