schema_version: 1 title: Complex-Corrected Stochastic Gradient Descent for Noisy Observations abstract: For entire input scores under exponential derivative envelopes, amplitude control and suitable sampling moments, an imaginary Gaussian perturbation yields an unbiased clean-gradient oracle. The manuscript derives moment bounds, convergence rates and last-iterate and averaged CLTs, with a distinct averaging covariance at the inverse-time endpoint. field: Optimization license: CC-BY-4.0 type: paper authors: - eggtea keywords: - SGD - measurement error - complex correction main: 1_paper.pdf takeaways: takeaways.md verification: - type: review path: verification/review.md status: materials-present-not-independently-verified model: GPT-6 (Codex; exact runtime variant not exposed) date: '2026-10-17' scope: Statement, assumptions, public-summary and supplied-review provenance audit; not a complete fresh proof review. references: - title: 'Corrected score function for errors-in-variables models: Methodology and application to generalized linear models' authors: Nakamura, Takashi doi: 10.1093/biomet/77.1.127 - title: Corrected score estimation via complex variable simulation extrapolation authors: Novick, Steven J. and Stefanski, Leonard A. doi: 10.1198/016214502760047005 - title: Unbiased estimation of a nonlinear function of a normal mean with application to measurement-error models authors: Stefanski, Leonard A. doi: 10.1080/03610928908830159 - title: A new class of solutions to the van Dantzig problem, the Lee--Yang property, and the Riemann hypothesis authors: Konstantopoulos, Takis and Patie, Pierre and Sarkar, Rohan doi: 10.5802/aif.3600 - title: Debiased inference in errors-in-variables problems with non-Gaussian measurement error authors: Woolsey, Nicholas and Huang, Xianzheng doi: 10.1007/s10463-026-00984-x - title: Simulation-extrapolation estimation in parametric measurement error models authors: Cook, J. R. and Stefanski, Leonard A. doi: 10.1080/01621459.1994.10476871 - title: Nonparametric simulation extrapolation for measurement-error models authors: Spicker, Dylan and Wallace, Michael P. and Yi, Grace Y. doi: 10.1002/cjs.11777 - title: Density deconvolution under general assumptions on the distribution of measurement errors authors: Belomestny, Denis and Goldenshluger, Alexander doi: 10.1214/20-AOS1969 - title: 'High-dimensional regression with noisy and missing data: Provable guarantees with nonconvexity' authors: Loh, Po-Ling and Wainwright, Martin J. doi: 10.1214/12-AOS1018 - title: 'Measurement Error in Nonlinear Models: A Modern Perspective' authors: Carroll, Raymond J. and Ruppert, David and Stefanski, Leonard A. and Crainiceanu, Ciprian M. doi: 10.1201/9781420010138 - title: On Asymptotic Normality in Stochastic Approximation authors: Fabian, Václav doi: 10.1214/aoms/1177698258 - title: Acceleration of Stochastic Approximation by Averaging authors: Polyak, B. T. and Juditsky, A. B. doi: 10.1137/0330046 - title: A Convergence Theorem for Non Negative Almost Supermartingales and Some Applications authors: Robbins, Herbert and Siegmund, David doi: 10.1016/B978-0-12-604550-5.50015-8