no code implementations • 19 Mar 2024 • Christopher Chambers, Alan Miller, Ruodu Wang, Qinyu Wu
Max-stability is the property that taking a maximum between two inputs results in a maximum between two outputs.
no code implementations • 2 Dec 2023 • Xia Han, Ruodu Wang, Qinyu Wu
The form is a combination of the deviation-related functional and the expectation, and such measures belong to the class of consistent risk measures.
no code implementations • 13 Oct 2023 • Fabio Maccheroni, Massimo Marinacci, Ruodu Wang, Qinyu Wu
We then extend the analysis to comparative risk aversion by showing that the notion of Yaari (1969) corresponds to comparative propension to full insurance, while the stronger notion of Ross (1981) corresponds to comparative propension to partial insurance.
no code implementations • 29 Jan 2023 • Qinyu Wu, Fan Yang, Ping Zhang
As a counterpart to the (static) risk measures of generalized quantiles and motivated by Bellini et al. (2018), we propose a new kind of conditional risk measure called conditional generalized quantiles.
no code implementations • 12 Dec 2022 • Qinyu Wu, Jonathan Yu-Meng Li, Tiantian Mao
Two compelling explanations for the success are the generalization bounds derived from Wasserstein DRO and the equivalency between Wasserstein DRO and the regularization scheme commonly applied in machine learning.
no code implementations • 7 Sep 2022 • Ruodu Wang, Qinyu Wu
Quasi-convexity in probabilistic mixtures is a common and useful property in decision analysis.
no code implementations • 17 Jan 2022 • Tiantian Mao, Ruodu Wang, Qinyu Wu
The MA risk evaluation can be computed through explicit formulas in the lattice theory of stochastic dominance, and under some standard assumptions, the MA robust optimization admits a convex-program reformulation.
no code implementations • 11 Aug 2021 • Xia Han, Bin Wang, Ruodu Wang, Qinyu Wu
Recently, Wang and Zitikis (2021) put forward four economic axioms for portfolio risk assessment and provide the first economic axiomatic foundation for the family of ES.