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Adaptive Confidence Sets for Binary Regression without Design Smoothness

P. M. Aronow, Patrick Lopatto

math.STarXiv:2608.01309

Abstract

We study honest adaptive confidence sets for the regression function in random-design binary regression under L2(dx) loss. Assuming only known bounds 0<c≤ g≤ C<∞ on the unknown design density, we construct asymptotically honest, rate-adaptive confidence sets without requiring g to be smooth. Full adaptation is possible when the range of regression-function smoothness spans at most a factor of two. Over wider smoothness ranges, adaptation is achieved on the usual separated classes at the corresponding testing rates n-2s/(4s+d). A lower bound under the uniform design shows that these separation rates are rate-optimal. This answers a question raised by Mukherjee and Sen (2018).

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