Search Results for author: Romain Cosson

Found 5 papers, 0 papers with code

Ariadne and Theseus: Exploration and Rendezvous with Two Mobile Agents in an Unknown Graph

no code implementations12 Mar 2024 Romain Cosson

We show that a simple variant of depth-first search achieves collective exploration in $m$ synchronous time-steps, where $m$ is the number of edges of the graph.

Gradient Descent for Low-Rank Functions

no code implementations16 Jun 2022 Romain Cosson, Ali Jadbabaie, Anuran Makur, Amirhossein Reisizadeh, Devavrat Shah

When $r \ll p$, these complexities are smaller than the known complexities of $\mathcal{O}(p \log(1/\epsilon))$ and $\mathcal{O}(p/\epsilon^2)$ of {\gd} in the strongly convex and non-convex settings, respectively.

Universal Online Learning with Unbounded Losses: Memory Is All You Need

no code implementations21 Jan 2022 Moise Blanchard, Romain Cosson, Steve Hanneke

We resolve an open problem of Hanneke on the subject of universally consistent online learning with non-i. i. d.

Learning Theory Memorization

Universal Online Learning with Bounded Loss: Reduction to Binary Classification

no code implementations29 Dec 2021 Moïse Blanchard, Romain Cosson

However, when the loss function is bounded, the class of processes admitting strong universal consistency is much richer and its characterization could be dependent on the response setting (Hanneke).

Binary Classification Classification +1

Quantifying Variational Approximation for the Log-Partition Function

no code implementations19 Feb 2021 Romain Cosson, Devavrat Shah

Specifically, we argue that (a variant of) TRW produces an estimate that is within factor $\frac{1}{\sqrt{\kappa(G)}}$ of the true log-partition function for any discrete pairwise graphical model over graph $G$, where $\kappa(G) \in (0, 1]$ captures how far $G$ is from tree structure with $\kappa(G) = 1$ for trees and $2/N$ for the complete graph over $N$ vertices.

Variational Inference

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