Search Results for author: Zeeshan Akhtar

Found 3 papers, 0 papers with code

Projection-Free Algorithm for Stochastic Bi-level Optimization

no code implementations22 Oct 2021 Zeeshan Akhtar, Amrit Singh Bedi, Srujan Teja Thomdapu, Ketan Rajawat

The proposed $\textbf{S}$tochastic $\textbf{C}$ompositional $\textbf{F}$rank-$\textbf{W}$olfe ($\textbf{SCFW}$) is shown to achieve a sample complexity of $\mathcal{O}(\epsilon^{-2})$ for convex objectives and $\mathcal{O}(\epsilon^{-3})$ for non-convex objectives, at par with the state-of-the-art sample complexities for projection-free algorithms solving single-level problems.

Denoising Matrix Completion +1

Zeroth and First Order Stochastic Frank-Wolfe Algorithms for Constrained Optimization

no code implementations14 Jul 2021 Zeeshan Akhtar, Ketan Rajawat

This paper considers stochastic convex optimization problems with two sets of constraints: (a) deterministic constraints on the domain of the optimization variable, which are difficult to project onto; and (b) deterministic or stochastic constraints that admit efficient projection.

Conservative Stochastic Optimization with Expectation Constraints

no code implementations13 Aug 2020 Zeeshan Akhtar, Amrit Singh Bedi, Ketan Rajawat

In this work, we propose the FW-CSOA algorithm that is not only projection-free but also achieves zero constraint violation with $\O\left(T^{-\frac{1}{4}}\right)$ decay of the optimality gap.

Matrix Completion Stochastic Optimization

Cannot find the paper you are looking for? You can Submit a new open access paper.