activity
20242026
collaborators

5 papers

math.NA2026

Multilevel randomized quasi-Monte Carlo estimator for nested integration

Arved Bartuska, André Gustavo Carlon, Luis Espath +2

Nested integration problems arise in various scientific and engineering applications, including Bayesian experimental design, financial risk assessment, and uncertainty quantificat…

math.OC2026

Multi-Iteration Stochastic Optimizers

Andre Carlon, Luis Espath, Rafael Lopez +1

We introduce Multi-Iteration Stochastic Optimizers, a novel class of first-order stochastic methods that control the relative error using successive control variates along th…

math.NA2026

Double-loop randomized quasi-Monte Carlo estimator for nested integration

Arved Bartuska, André Gustavo Carlon, Luis Espath +2

Nested integration of the form $\int f\left(\int g(\bs{y},\bs{x})\di{}\bs{x}\right)\di{}\bs{y}$, characterized by an outer integral connected to an inner integral through a nonline…

math.OC2025

Efficient Stochastic BFGS methods Inspired by Bayesian Principles

André Carlon, Luis Espath, Raúl Tempone

Quasi-Newton methods are ubiquitous in deterministic local search due to their efficiency and low computational cost. This class of methods uses the history of gradient evaluations…

math.NA2024

Laplace-based strategies for Bayesian optimal experimental design with nuisance uncertainty

Arved Bartuska, Luis Espath, Raúl Tempone

Finding the optimal design of experiments in the Bayesian setting typically requires estimation and optimization of the expected information gain functional. This functional consis…