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Frédéric Koessler, Marie Laclau, Jérôme Renault, and Tristan Tomala
vol. 203, n. 1-2, January 2024, p. 477–498
This paper studies zero-sum splitting games with finite sets of states. Players dynamically choose a pair of martingales {pt,qt}t, in order to control a terminal payoff u(p∞,q∞). A first part introduces the notion of “Mertens–Zamir transform" of a real-valued matrix and use it to approximate the...
Jérôme Bolte, Edouard Pauwels, and Samuel Vaiter
A. Oh, T. Naumann, A. Globerson, K. Saenko, M. Hardt, and Sydney Levine (eds.), 2023, pp. 77089–77103
In appropriate frameworks, automatic differentiation is transparent to the user, at the cost of being a significant computational burden when the number of operations is large. For iterative algorithms, implicit differentiation alleviates this issue but requires custom implementation of Jacobian...
Christine Thomas-Agnan, and Lukas Dargel
vol. 184, n. 4, 2023, p. 143– 151
Rachael Colley, Umberto Grandi, César Hidalgo, Mariana Macedo, and Carlos Navarrete
Edith Elkind (ed.), 2023
In rank aggregation, members of a population rank issues to decide which are collectively preferred. We focus instead on identifying divisive issues that express disagreements among the preferences of individuals. We analyse the properties of our divisiveness measures and their relation to existing...
A. Oh, S. Koyejo, S. Mohamed, A. Agarwal, D. Belgrave, and K. Cho (eds.), 2023, pp. 77089–77103
Differentiation along algorithms, i.e., piggyback propagation of derivatives, is now routinely used to differentiate iterative solvers in differentiable programming. Asymptotics is well understood for many smooth problems but the nondifferentiable case is hardly considered. Is there a limiting...
Jérôme Bolte, Lilian Glaudin, Edouard Pauwels, and Matthieu Serrurier
vol. 4, n. 8, 2023, 17 pages
We present a new algorithm to solve min-max or min-min problems out of the convex world. We use rigidity assumptions, ubiquitous in learning, making our method – the backtrack Hölder algorithm applicable to many optimization problems. Our approach takes advantage of hidden regularity properties and...
Pierre Pestieau
vol. 152, n. 4, 2023, pp. 15–26
Le vieillissement démographique entraîne une forte augmentation des besoins liés à la dépendance et à la perte d'autonomie partout en Europe. Cet article traite des questions de financement de la dépendance et de la fourniture des services qu'elle réclame. Il discute du rôle respectif du marché, de...
Salvatore Di Falco, Carl-Johan Lagerkvist, Céline Nauges, and Timothy J. Richards
vol. 50, n. 4, 2023, p. 1233–1255
In this article, we celebrate the first 50 years of the European Review of Agricultural Economics. We intend to convey some understanding of how the interests of European Review of Agricultural Economics (ERAE) readers change over time as a reflection of how shifting interests show up in our...
Catherine Cazals, Thierry Magnac, Jonathan Pope, and Soterios Soteri
Pier Luigi Parcu, Timothy J. Brennan, and Victor Glass (eds.), Springer Nature Switzerland AG, 2023
Michele Bisceglia, and Jorge Padilla
vol. 32, n. 1, 2023, pp. 207–222
Hybrid marketplaces, such as Amazon's and Zalando's stores or Apple's and Google's app stores, which distribute their own products and services in competition with those of third-party sellers, play a significant and growing role in the internet economy. This paper shows that such platforms react...
