← Search

Dimitrios Milios

4 accepted papers

2022

Revisiting the Effects of Stochasticity for Hamiltonian Samplers

ICML 2022spotlight

We revisit the theoretical properties of Hamiltonian stochastic differential equations (SDES) for Bayesian posterior sampling, and we study the two types of errors that arise from numerical SDE simulation: the discretization error and the error due to noisy gradient estimates in the context of data…

Cited by 4SourcePDFScholar
2021

Model Selection for Bayesian Autoencoders

NeurIPS 2021poster

We develop a novel method for carrying out model selection for Bayesian autoencoders (BAEs) by means of prior hyper-parameter optimization. Inspired by the common practice of type-II maximum likelihood optimization and its equivalence to Kullback-Leibler divergence minimization, we propose to optimi…

2021

Sparse within Sparse Gaussian Processes using Neighbor Information

ICML 2021spotlight

Approximations to Gaussian processes (GPs) based on inducing variables, combined with variational inference techniques, enable state-of-the-art sparse approaches to infer GPs at scale through mini-batch based learning. In this work, we further push the limits of scalability of sparse GPs by allowing…

Cited by 21SourcePDFScholar
2018

Dirichlet-based Gaussian Processes for Large-scale Calibrated Classification

NeurIPS 2018poster

This paper studies the problem of deriving fast and accurate classification algorithms with uncertainty quantification. Gaussian process classification provides a principled approach, but the corresponding computational burden is hardly sustainable in large-scale problems and devising efficient alte…