Ensemble Distributionally Robust Bayesian Optimisation

Fuente: arXiv
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Main Authors: Ramazyan, Tigran, Derkach, Denis
Format: Preprint
Published: 2026
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author Ramazyan, Tigran
Derkach, Denis
author_facet Ramazyan, Tigran
Derkach, Denis
contents We study zeroth-order optimisation under context distributional uncertainty, a setting commonly tackled using Bayesian optimisation (BO). A prevailing strategy to make BO more robust to the complex and noisy nature of data is to employ an ensemble as the surrogate model, thereby mitigating the weaknesses of any single model. In this study, we propose a novel algorithm for Ensemble Distributionally Robust Bayesian Optimisation that remains computationally tractable while managing continuous context. We obtain theoretical sublinear regret bounds, improving current state-of-the-art results. We show that our method's empirical behaviour aligns with its theoretical guarantees.
format Preprint
id arxiv_https___arxiv_org_abs_2605_07565
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Ensemble Distributionally Robust Bayesian Optimisation
Ramazyan, Tigran
Derkach, Denis
Machine Learning
Artificial Intelligence
We study zeroth-order optimisation under context distributional uncertainty, a setting commonly tackled using Bayesian optimisation (BO). A prevailing strategy to make BO more robust to the complex and noisy nature of data is to employ an ensemble as the surrogate model, thereby mitigating the weaknesses of any single model. In this study, we propose a novel algorithm for Ensemble Distributionally Robust Bayesian Optimisation that remains computationally tractable while managing continuous context. We obtain theoretical sublinear regret bounds, improving current state-of-the-art results. We show that our method's empirical behaviour aligns with its theoretical guarantees.
title Ensemble Distributionally Robust Bayesian Optimisation
topic Machine Learning
Artificial Intelligence
url https://arxiv.org/abs/2605.07565