Risk-adaptive approaches to stochastic optimization: A survey

JO Royset - SIAM Review, 2025 - SIAM
Uncertainty is prevalent in engineering design and data-driven problems and, more broadly,
in decision making. Due to inherent risk-averseness and ambiguity about assumptions, it is …

[PDF][PDF] Concentration bounds for CVaR estimation: The cases of light-tailed and heavy-tailed distributions

LA Prashanth, K Jagannathan… - Proceedings of the 37th …, 2020 - proceedings.mlr.press
Abstract Conditional Value-at-Risk (CVaR) is a widely used risk metric in applications such
as finance. We derive concentration bounds for CVaR estimates, considering separately the …

Supervised learning with general risk functionals

L Leqi, A Huang, Z Lipton… - … on Machine Learning, 2022 - proceedings.mlr.press
Standard uniform convergence results bound the generalization gap of the expected loss
over a hypothesis class. The emergence of risk-sensitive learning requires generalization …

Stochastic optimization for spectral risk measures

R Mehta, V Roulet, K Pillutla, L Liu… - International …, 2023 - proceedings.mlr.press
Spectral risk objectives–also called L-risks–allow for learning systems to interpolate
between optimizing average-case performance (as in empirical risk minimization) and worst …

Sum of ranked range loss for supervised learning

S Hu, Y Ying, X Wang, S Lyu - Journal of Machine Learning Research, 2022 - jmlr.org
In forming learning objectives, one oftentimes needs to aggregate a set of individual values
to a single output. Such cases occur in the aggregate loss, which combines individual losses …

Learning by minimizing the sum of ranked range

S Hu, Y Ying, S Lyu - Advances in Neural Information …, 2020 - proceedings.neurips.cc
In forming learning objectives, one oftentimes needs to aggregate a set of individual values
to a single output. Such cases occur in the aggregate loss, which combines individual losses …

Pac-bayesian bound for the conditional value at risk

Z Mhammedi, B Guedj… - Advances in Neural …, 2020 - proceedings.neurips.cc
Abstract Conditional Value at Risk ($\textsc {CVaR} $) is a``coherent risk measure''which
generalizes expectation (reduced to a boundary parameter setting). Widely used in …

Risk-adaptive approaches to learning and decision making: A survey

JO Royset - arxiv preprint arxiv:2212.00856, 2022 - arxiv.org
Uncertainty is prevalent in engineering design, statistical learning, and decision making
broadly. Due to inherent risk-averseness and ambiguity about assumptions, it is common to …

Regret bounds for risk-sensitive reinforcement learning with lipschitz dynamic risk measures

H Liang, Z Luo - International Conference on Artificial …, 2024 - proceedings.mlr.press
We study finite episodic Markov decision processes incorporating dynamic risk measures to
capture risk sensitivity. To this end, we present two model-based algorithms applied to\emph …

STL robustness risk over discrete-time stochastic processes

L Lindemann, N Matni… - 2021 60th IEEE …, 2021 - ieeexplore.ieee.org
We present a framework to interpret signal temporal logic (STL) formulas over discrete-time
stochastic processes in terms of the induced risk. Each realization of a stochastic process …