no code implementations • 23 Apr 2023 • Vasileios Charisopoulos, Hossein Esfandiari, Vahab Mirrokni
In this paper, we study the stochastic linear bandit problem under the additional requirements of differential privacy, robustness and batched observations.
no code implementations • 20 Apr 2023 • Polina Alexeenko, Vasileios Charisopoulos
More precisely, we consider the problem of minimizing aggregate battery capacity in settings with and without a shared resource subject to the requirement that driver commuting needs are met with high reliability.
no code implementations • 31 May 2022 • Vasileios Charisopoulos, Anil Damle
We develop an eigenspace estimation algorithm for distributed environments with arbitrary node failures, where a subset of computing nodes can return structurally valid but otherwise arbitrarily chosen responses.
1 code implementation • 5 Sep 2020 • Vasileios Charisopoulos, Austin R. Benson, Anil Damle
Spectral methods are a collection of such problems, where solutions are orthonormal bases of the leading invariant subspace of an associated data matrix, which are only unique up to rotation and reflections.
1 code implementation • NeurIPS 2020 • Vasileios Charisopoulos, Austin R. Benson, Anil Damle
Several problems in machine learning, statistics, and other fields rely on computing eigenvectors.
1 code implementation • 22 Jul 2019 • Damek Davis, Dmitriy Drusvyatskiy, Vasileios Charisopoulos
In this work, we ask whether geometric step decay similarly improves stochastic algorithms for the class of sharp nonconvex problems.
no code implementations • 22 Apr 2019 • Vasileios Charisopoulos, Yudong Chen, Damek Davis, Mateo Díaz, Lijun Ding, Dmitriy Drusvyatskiy
The task of recovering a low-rank matrix from its noisy linear measurements plays a central role in computational science.
1 code implementation • 6 Jan 2019 • Vasileios Charisopoulos, Damek Davis, Mateo Díaz, Dmitriy Drusvyatskiy
The blind deconvolution problem seeks to recover a pair of vectors from a set of rank one bilinear measurements.
no code implementations • 22 May 2018 • Vasileios Charisopoulos, Petros Maragos
We present a new, unifying approach following some recent developments on the complexity of neural networks with piecewise linear activations.