Search Results for author: Alessandro Doldi

Found 8 papers, 0 papers with code

On continuity of state-dependent utilities

no code implementations17 Jan 2024 Edoardo Berton, Alessandro Doldi, Marco Maggis

State-dependent preferences for a general Savage's state space were shown in Wakker and Zank (1999) to admit a numerical representation in the form of the integral of a state-dependent utility, as soon as pointwise continuity of the preference ordering is assumed.

Collective Arbitrage and the Value of Cooperation

no code implementations20 Jun 2023 Francesca Biagini, Alessandro Doldi, Jean-Pierre Fouque, Marco Frittelli, Thilo Meyer-Brandis

We introduce the notions of Collective Arbitrage and of Collective Super-replication in a setting where agents are investing in their markets and are allowed to cooperate through exchanges.

Are Shortfall Systemic Risk Measures One Dimensional?

no code implementations19 Jun 2023 Alessandro Doldi, Marco Frittelli, Emanuela Rosazza Gianin

Shortfall systemic (multivariate) risk measures $\rho$ defined through an $N$-dimensional multivariate utility function $U$ and random allocations can be represented as classical (one dimensional) shortfall risk measures associated to an explicitly determined $1$-dimensional function constructed from $U$.

Multivariate Systemic Risk Measures and Computation by Deep Learning Algorithms

no code implementations2 Feb 2023 Alessandro Doldi, Yichen Feng, Jean-Pierre Fouque, Marco Frittelli

In this work we propose deep learning-based algorithms for the computation of systemic shortfall risk measures defined via multivariate utility functions.

Fairness

Risk Sharing with Deep Neural Networks

no code implementations22 Dec 2022 Matteo Burzoni, Alessandro Doldi, Enea Monzio Compagnoni

We consider the problem of optimally sharing a financial position among agents with potentially different reference risk measures.

Position

Conditional Systemic Risk Measures

no code implementations22 Oct 2020 Alessandro Doldi, Marco Frittelli

We investigate to which extent the relevant features of (static) Systemic Risk Measures can be extended to a conditional setting.

Entropy Martingale Optimal Transport and Nonlinear Pricing-Hedging Duality

no code implementations26 May 2020 Alessandro Doldi, Marco Frittelli

The objective of this paper is to develop a duality between a novel Entropy Martingale Optimal Transport problem (A) and an associated optimization problem (B).

Math

Multivariate Systemic Optimal Risk Transfer Equilibrium

no code implementations27 Dec 2019 Alessandro Doldi, Marco Frittelli

We prove existence, uniqueness, and the Nash Equilibrium property of the newly defined Multivariate Systemic Optimal Risk Transfer Equilibrium.

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