Tilted empirical risk minimization

T Li, A Beirami, M Sanjabi, V Smith - arXiv preprint arXiv:2007.01162, 2020 - arxiv.org
Empirical risk minimization (ERM) is typically designed to perform well on the average loss,
which can result in estimators that are sensitive to outliers, generalize poorly, or treat …

Convex optimization algorithms in medical image reconstruction—in the age of AI

J Xu, F Noo - Physics in Medicine & Biology, 2022 - iopscience.iop.org
The past decade has seen the rapid growth of model based image reconstruction (MBIR)
algorithms, which are often applications or adaptations of convex optimization algorithms …

[图书][B] Modern nonconvex nondifferentiable optimization

Y Cui, JS Pang - 2021 - SIAM
Mathematical optimization has always been at the heart of engineering, statistics, and
economics. In these applied domains, optimization concepts and methods have often been …

Understanding notions of stationarity in nonsmooth optimization: A guided tour of various constructions of subdifferential for nonsmooth functions

J Li, AMC So, WK Ma - IEEE Signal Processing Magazine, 2020 - ieeexplore.ieee.org
Many contemporary applications in signal processing and machine learning give rise to
structured nonconvex nonsmooth optimization problems that can often be tackled by simple …

Extremum information transfer over networks for remote estimation and distributed learning

MM Vasconcelos, U Mitra - Frontiers in Complex Systems, 2024 - frontiersin.org
Most modern large-scale multi-agent systems operate by taking actions based on local data
and cooperate by exchanging information over communication networks. Due to the …

Nonconvex and nonsmooth approaches for affine chance-constrained stochastic programs

Y Cui, J Liu, JS Pang - Set-Valued and Variational Analysis, 2022 - Springer
Chance-constrained programs (CCPs) constitute a difficult class of stochastic programs due
to its possible nondifferentiability and nonconvexity even with simple linear random …

Risk-based robust statistical learning by stochastic difference-of-convex value-function optimization

J Liu, JS Pang - Operations Research, 2023 - pubsonline.informs.org
This paper proposes the use of a variant of the conditional value-at-risk (CVaR) risk
measure, called the interval conditional value-at-risk (In-CVaR), for the treatment of outliers …

Two-stage stochastic programming with linearly bi-parameterized quadratic recourse

J Liu, Y Cui, JS Pang, S Sen - SIAM Journal on Optimization, 2020 - SIAM
This paper studies the class of two-stage stochastic programs with a linearly bi-
parameterized recourse function defined by a convex quadratic program. A distinguishing …

A three-operator splitting algorithm with deviations for generalized DC programming

Z Hu, QL Dong - Applied Numerical Mathematics, 2023 - Elsevier
In this paper, we introduce a three-operator splitting algorithm with deviations for solving the
minimization problem composed of the sum of two convex functions minus a convex and …

Solving nonsmooth and nonconvex compound stochastic programs with applications to risk measure minimization

J Liu, Y Cui, JS Pang - Mathematics of Operations Research, 2022 - pubsonline.informs.org
This paper studies a structured compound stochastic program (SP) involving multiple
expectations coupled by nonconvex and nonsmooth functions. We present a successive …