Centre d'Économie de la Sorbonne

Experimental impact study on a micro-grid project in rural Madagascar: The Café Lumière project

This paper evaluates the impact of a pilot innovative project aiming at promoting a replicable model to create access to distributed electricity in rural areas where grid extension is economically infeasible. The project proposes building solar-powered micro-grids to provide affo...

Foreign aid and power play: Political cycles in world bank’s procurement allocation

This paper examines the existence of political cycles in the awarding of World Bank procurement contracts around elections. We analyze elections in the home country of firms winning these contracts, distinguishing between firms based in the aid recipient country (i.e., domestic f...

Adaptive multilevel stochastic approximation of the value-at-risk

Crépey, Frikha and Louzi (Finance Stoch. (2025) 1015–1074) introduced a multilevel stochastic approximation scheme to compute the value-at-risk of a financial loss that is only simulatable by Monte Carlo. The best complexity of the scheme is in O(ε−52), ε>0 being a prescribed acc...

Recommendation in the era of GenAI: from an attention economy to a trust economy

The article examines the shift in the digital cultural ecosystem triggered by the widespread adoption of Generative AI. Historically, the platformization of cultural industries established an attention economy, where recommendation algorithms were essential for guiding users thro...