Recherche avancée

Jean-Paul Azam

n° 26-1698, janvier 2026

This chapter tries to bridge the gap between peace and conflict theory, on the one hand, and the practice of professional Peacebuilders in post-conflicts settings, on the other hand. It first highlights some of the main insights brought about by the theorists, linking the latter to standard...

Nhat-Thang Le et Laurent Miclo

vol. 191, n° 104780, janvier 2026

Consider the global optimisation of a function defined on a finite set endowed with an irreducible and reversible Markov generator. By integration, we extend to the set of probability distributions on and we penalize it with a time-dependent generalized entropy functional. Endowing with a Maas’...

Aurore Archimbaud

vol. 211, n° 105520, janvier 2026

Invariant coordinate selection is an unsupervised multivariate data transformation useful in many contexts such as outlier detection or clustering. It is based on the simultaneous diagonalization of two affine equivariant and positive definite scatter matrices. Its classical implementation relies...

Marie-Françoise Calmette

n° 449, janvier 2026

Frédéric Cherbonnier, Christian Gollier et Aude Pommeret

n° 26-1697, janvier 2026

Standard evaluations of public policies involve discounting the flow of expected net benefits at a unique discount rate. Consequently, they systematically ignore the insurance benefits of policies that hedge the aggregate risk, and the social cost of projects that raise the aggregate risk....

Jacopo Bregolin, Astrid Hopfensitz et Elena Panova

n° 26-1696, janvier 2026

We experimentally test how the content of advice, namely, its alignment with common priors, influences beliefs about its quality and future demand for it. We reject the theoretical hypothesis that demand for advice can be increased by giving advice in alignment with common priors. We find,...

Camille Mondon, Thi-Huong Trinh, Anne M. Ruiz et Christine Thomas-Agnan

vol. 211, n° 105522, janvier 2026

Invariant coordinate selection (ICS) is a dimension reduction method, used as a preliminary step for clustering and outlier detection. It has been primarily applied to multivariate data. This work introduces a coordinate-free definition of ICS in an abstract Euclidean space and extends the method...

Colombe Becquart, Aurore Archimbaud, Anne M. Ruiz, Luka Prilc et Klaus Nordhausen

vol. 211, n° 105521, janvier 2026

Invariant Coordinate Selection (ICS) is a multivariate technique that relies on the simultaneous diagonalization of two scatter matrices. It serves various purposes, including its use as a dimension reduction tool prior to clustering or outlier detection. ICS’s theoretical foundation establishes...

Doh-Shin Jeon, Jay Pil Choi et Michael Whinston

vol. 116, n° 1, janvier 2026, p. 332–374

We develop a leverage theory of tying in markets with network effects. When a monopolist in one market cannot perfectly extract surplus from consumers, tying can be a mechanism through which unexploited consumer surplus is used as a demand-side leverage to create a “quasi-installed base” advantage...

Mengchen Dong, Jane Conway, Jean-François Bonnefon, Azim Shariff et Iyad Rahwan

vol. 81, n° 1, janvier 2026, p. 53–67

The frontier of artificial intelligence (AI) is constantly moving, raising fears and concerns whenever AI is deployed in a new occupation. Some of these fears are legitimate and should be addressed by AI developers-but others may result from psychological barriers, suppressing the uptake of a...