2019
DOI: 10.48550/arxiv.1910.05701
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Five Shades of Grey: Phase Transitions in High-dimensional Multiple Testing

Abstract: We are motivated by marginal screenings of categorical variables, and study high-dimensional multiple testing problems where test statistics have approximate chi-square distributions. We characterize four new phase transitions in high-dimensional chi-square models, and derive the signal sizes necessary and sufficient for statistical procedures to simultaneously control false discovery (in terms of family-wise error rate or false discovery rate) and missed detection (in terms of family-wise non-discovery rate o… Show more

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“…The existence of a subtle phase transition in an apparently simple detection problem sparked subsequent research interest in sparse mixture detection. Phase transitions have been discovered in a variety of other sparse mixture detection problems beyond the sparse normal mixture setting [22,3,13,7,15,20]. In investigating the asymptotic consequences of signal rarity and strength on various statistical tasks, a theoretical framework called the Asymptotic Rare/Weak (ARW) model has been introduced [31,14].…”
Section: Introductionmentioning
confidence: 99%
“…The existence of a subtle phase transition in an apparently simple detection problem sparked subsequent research interest in sparse mixture detection. Phase transitions have been discovered in a variety of other sparse mixture detection problems beyond the sparse normal mixture setting [22,3,13,7,15,20]. In investigating the asymptotic consequences of signal rarity and strength on various statistical tasks, a theoretical framework called the Asymptotic Rare/Weak (ARW) model has been introduced [31,14].…”
Section: Introductionmentioning
confidence: 99%