Search Results for author: Qinyu Wu

Found 8 papers, 0 papers with code

Max-stability under first-order stochastic dominance

no code implementations19 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.

Monotonic mean-deviation risk measures

no code implementations2 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.

Risk Aversion and Insurance Propensity

no code implementations13 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.

Conditional generalized quantiles based on expected utility model and equivalent characterization of properties

no code implementations29 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.

On Generalization and Regularization via Wasserstein Distributionally Robust Optimization

no code implementations12 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.

Generalization Bounds

Quasi-convexity in mixtures for generalized rank-dependent functions

no code implementations7 Sep 2022 Ruodu Wang, Qinyu Wu

Quasi-convexity in probabilistic mixtures is a common and useful property in decision analysis.

Management

Model Aggregation for Risk Evaluation and Robust Optimization

no code implementations17 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.

Portfolio Optimization

Risk Concentration and the Mean-Expected Shortfall Criterion

no code implementations11 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.

Management Translation

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