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Rectified Linear Unit Regression

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  • Tatsushi Oka

Abstract

This paper develops a regression framework for the direct estimation of integrated functionals of conditional outcome distributions. The proposed method, termed rectified linear unit (ReLU) regression, projects the ReLU-transformed outcome onto covariates and admits a closed-form estimator. Its population regression function coincides with the integrated conditional distribution function of the outcome, and its convex conjugate, obtained via the Legendre-Fenchel transformation, recovers the integrated conditional quantile function. Both the regression and its conjugate require only mild distributional assumptions and accommodate non-continuous outcomes. We establish the uniform asymptotic distribution of the estimator and develop inference for the conjugate functional via the delta method for Hadamard directionally differentiable maps. Building on these results, we establish identification and inference for average quantile treatment effects over arbitrary subintervals of probability levels. This broadens the set of distributional parameters available to empirical work.

Suggested Citation

  • Tatsushi Oka, 2026. "Rectified Linear Unit Regression," Papers 2605.30609, arXiv.org.
    • Handle: RePEc:arx:papers:2605.30609
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    File URL: http://arxiv.org/pdf/2605.30609
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