Search Results for author: Marcelo Hartmann

Found 5 papers, 4 papers with code

Warped geometric information on the optimisation of Euclidean functions

no code implementations16 Aug 2023 Marcelo Hartmann, Bernardo Williams, Hanlin Yu, Mark Girolami, Alessandro Barp, Arto Klami

We use Riemannian geometry notions to redefine the optimisation problem of a function on the Euclidean space to a Riemannian manifold with a warped metric, and then find the function's optimum along this manifold.

Scalable Stochastic Gradient Riemannian Langevin Dynamics in Non-Diagonal Metrics

1 code implementation9 Mar 2023 Hanlin Yu, Marcelo Hartmann, Bernardo Williams, Arto Klami

Stochastic-gradient sampling methods are often used to perform Bayesian inference on neural networks.

Bayesian Inference

Lagrangian Manifold Monte Carlo on Monge Patches

1 code implementation1 Feb 2022 Marcelo Hartmann, Mark Girolami, Arto Klami

The efficiency of Markov Chain Monte Carlo (MCMC) depends on how the underlying geometry of the problem is taken into account.

Efficient Exploration

Prior Specification for Bayesian Matrix Factorization via Prior Predictive Matching

2 code implementations27 Oct 2019 Eliezer de Souza da Silva, Tomasz Kuśmierczyk, Marcelo Hartmann, Arto Klami

The behavior of many Bayesian models used in machine learning critically depends on the choice of prior distributions, controlled by some hyperparameters that are typically selected by Bayesian optimization or cross-validation.

Bayesian Optimization Hyperparameter Optimization +1

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