Blackbox Simulation Optimization

H Cao, JQ Hu, T Lian - Journal of the Operations Research Society of …, 2024 - Springer
Simulation optimization is a widely used tool in the analysis and optimization of complex
stochastic systems. The majority of the previous works on simulation optimization rely …

Monte Carlo and quasi–Monte Carlo density estimation via conditioning

P L'Ecuyer, F Puchhammer… - INFORMS Journal on …, 2022 - pubsonline.informs.org
Estimating the unknown density from which a given independent sample originates is more
difficult than estimating the mean in the sense that, for the best popular nonparametric …

Maximum likelihood estimation by Monte Carlo simulation: Toward data-driven stochastic modeling

Y Peng, MC Fu, B Heidergott, H Lam - Operations Research, 2020 - pubsonline.informs.org
We propose a gradient-based simulated maximum likelihood estimation to estimate
unknown parameters in a stochastic model without assuming that the likelihood function of …

A stochastic approximation method for simulation-based quantile optimization

J Hu, Y Peng, G Zhang… - INFORMS Journal on …, 2022 - pubsonline.informs.org
We present a gradient-based algorithm for solving a class of simulation optimization
problems in which the objective function is the quantile of a simulation output random …

Computing sensitivities for distortion risk measures

PW Glynn, Y Peng, MC Fu… - INFORMS Journal on …, 2021 - pubsonline.informs.org
Distortion risk measure, defined by an integral of a distorted tail probability, has been widely
used in behavioral economics and risk management as an alternative to expected utility …

On the asymptotic analysis of quantile sensitivity estimation by Monte Carlo simulation

Y Peng, MC Fu, PW Glynn, J Hu - 2017 Winter Simulation …, 2017 - ieeexplore.ieee.org
We provide a unified framework to treat the asymptotic analysis for the non-batched quantile
sensitivity estimators of Fu et al.(2009), Liu and Hong (2009), and Lei et al.(2017). With only …

Efficient sampling allocation procedures for optimal quantile selection

Y Peng, CH Chen, MC Fu, JQ Hu… - INFORMS Journal on …, 2021 - pubsonline.informs.org
We propose a dynamic sampling allocation and selection paradigm for finding the
alternative with the optimal quantile in a Bayesian framework. Myopic allocation policies …

Input uncertainty quantification for quantiles

D Parmar, LE Morgan, AC Titman… - 2022 Winter …, 2022 - ieeexplore.ieee.org
Input models that drive stochastic simulations are often estimated from real-world samples of
data. This leads to uncertainty in the input models that propagates through to the simulation …

Generalized likelihood ratio method for stochastic models with uniform random numbers as inputs

Y Peng, MC Fu, J Hu, P L'Ecuyer, B Tuffin - European Journal of …, 2025 - Elsevier
We propose a new unbiased stochastic gradient estimator for a family of stochastic models
driven by uniform random numbers as inputs. Dropping the requirement that the tails of the …

Distortion Risk Measure-Based Deep Reinforcement Learning

J Jiang, B Heidergott, J Hu… - 2024 Winter Simulation …, 2024 - ieeexplore.ieee.org
Mainstream reinforcement learning (RL) typically focuses on maximizing expected
cumulative rewards. In this paper, we explore a risk-sensitive RL setting where the objective …