Set optimization—a rather short introduction

AH Hamel, F Heyde, A Löhne, B Rudloff… - … The State of the Art: From …, 2015 - Springer
Recent developments in set optimization are surveyed and extended including various set
relations as well as fundamental constructions of a convex analysis for set-and vector …

Primal and dual approximation algorithms for convex vector optimization problems

A Löhne, B Rudloff, F Ulus - Journal of Global Optimization, 2014 - Springer
Two approximation algorithms for solving convex vector optimization problems (CVOPs) are
provided. Both algorithms solve the CVOP and its geometric dual problem simultaneously …

[PDF][PDF] Risk-aware reinforcement learning with coherent risk measures and non-linear function approximation

T Lam, A Verma, BKH Low, P Jaillet - The Eleventh International …, 2022 - drive.google.com
We study the risk-aware reinforcement learning (RL) problem in the episodic finite-horizon
Markov decision process with unknown transition and reward functions. In contrast to the risk …

Set-valued average value at risk and its computation

AH Hamel, B Rudloff, M Yankova - Mathematics and Financial Economics, 2013 - Springer
New versions of the set-valued average value at risk for multivariate risks are introduced by
generalizing the well-known certainty equivalent representation to the set-valued case. The …

Multi-portfolio time consistency for set-valued convex and coherent risk measures

Z Feinstein, B Rudloff - Finance and Stochastics, 2015 - Springer
Equivalent characterizations of multi-portfolio time consistency are deduced for closed
convex and coherent set-valued risk measures on L^p(\varOmega,F,P;R^d) with image …

Time consistency of dynamic risk measures in markets with transaction costs

Z Feinstein, B Rudloff - Quantitative Finance, 2013 - Taylor & Francis
Set-valued dynamic risk measures are defined on with and with an image space in the
power set of. Primal and dual representations of dynamic risk measures are deduced …

A recursive algorithm for multivariate risk measures and a set-valued Bellman's principle

Z Feinstein, B Rudloff - Journal of Global Optimization, 2017 - Springer
A method for calculating multi-portfolio time consistent multivariate risk measures in discrete
time is presented. Market models for d assets with transaction costs or illiquidity and …

Set-valued shortfall and divergence risk measures

Ç Ararat, AH Hamel, B Rudloff - International Journal of Theoretical …, 2017 - World Scientific
Risk measures for multivariate financial positions are studied in a utility-based framework.
Under a certain incomplete preference relation, shortfall and divergence risk measures are …

Convergence analysis of a norm minimization-based convex vector optimization algorithm

Ç Ararat, F Ulus, M Umer - SIAM Journal on Optimization, 2024 - SIAM
In this work, we propose an outer approximation algorithm for solving bounded convex
vector optimization problems (CVOPs). The scalarization model solved iteratively within the …

Essential supremum with respect to a random partial order

Y Kabanov, E Lépinette - Journal of Mathematical Economics, 2013 - Elsevier
Inspired by the theory of financial markets with transaction costs, we study a concept of
essential supremum in the framework where a random partial order in R d is lifted to the …