3 papers
stat.ME2026
Active Pilot Sampling for Multi-fidelity Estimation in Stochastic Optimization
Thomas E. Coons, Aniket Jivani, Xun Huan
Stochastic optimization with high-fidelity nonlinear models is often computationally prohibitive because each objective evaluation requires sampling-based uncertainty quantificatio…
stat.ML2025
Bifidelity Karhunen-Loève Expansion Surrogate with Active Learning for Random Fields
Aniket Jivani, Cosmin Safta, Beckett Y. Zhou +1
We present a bifidelity Karhunen--Loève expansion (KLE) surrogate model for field-valued quantities of interest (QoIs) under uncertain inputs. The QoIs considered here are scalar f…
stat.ME2025
Bayesian Covariance Uncertainty for Adaptive Pilot-Sampling Termination in Multi-fidelity Uncertainty Quantification
Thomas E. Coons, Aniket Jivani, Xun Huan
Monte Carlo integration becomes prohibitively expensive when each sample requires a high-fidelity model evaluation. Multi-fidelity uncertainty quantification methods mitigate this…