Search Results for author: Arnab Auddy

Found 5 papers, 0 papers with code

Theoretical Analysis of Leave-one-out Cross Validation for Non-differentiable Penalties under High-dimensional Settings

no code implementations13 Feb 2024 Haolin Zou, Arnab Auddy, Kamiar Rahnama Rad, Arian Maleki

Despite a large and significant body of recent work focused on estimating the out-of-sample risk of regularized models in the high dimensional regime, a theoretical understanding of this problem for non-differentiable penalties such as generalized LASSO and nuclear norm is missing.

Approximate Leave-one-out Cross Validation for Regression with $\ell_1$ Regularizers (extended version)

no code implementations26 Oct 2023 Arnab Auddy, Haolin Zou, Kamiar Rahnama Rad, Arian Maleki

Recent theoretical work showed that approximate leave-one-out cross validation (ALO) is a computationally efficient and statistically reliable estimate of LO (and OO) for generalized linear models with differentiable regularizers.

Model Selection regression

Large Dimensional Independent Component Analysis: Statistical Optimality and Computational Tractability

no code implementations31 Mar 2023 Arnab Auddy, Ming Yuan

Our method is fairly easy to implement and numerical experiments are presented to further demonstrate its practical merits.

On Estimating Rank-One Spiked Tensors in the Presence of Heavy Tailed Errors

no code implementations20 Jul 2021 Arnab Auddy, Ming Yuan

In this paper, we study the estimation of a rank-one spiked tensor in the presence of heavy tailed noise.

Perturbation Bounds for (Nearly) Orthogonally Decomposable Tensors

no code implementations17 Jul 2020 Arnab Auddy, Ming Yuan

We develop deterministic perturbation bounds for singular values and vectors of orthogonally decomposable tensors, in a spirit similar to classical results for matrices such as those due to Weyl, Davis, Kahan and Wedin.

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