Two approximation algorithms for solving convex vector optimization problems (CVOPs) are provided. Both algorithms solve the CVOP and its geometric dual problem simultaneously …
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 …
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 …
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 …
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 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 …
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 …
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 …
In this paper we present results on dynamic multivariate scalar risk measures, which arise in markets with transaction costs and systemic risk. Dual representations of such risk measures …