Sub areas


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The statistics department has active research programs in high-dimensional statistics, machine learning, bayesian analysis, statistical computation and simulation, statistical analysis of networks, dimension reduction, statistics of random processes, and other topics. It hosts the chair « Optimal Transport and Applications to Statistics » of the IDEX Paris-Saclay. We participate in the Center for Data Science of the University Paris-Saclay. Our faculty teach in the Master programs « Mathématiques, vision, apprentissage » (MVA), Data Science, Statistics and Finance, « Mathématiques de l’aléatoire » of the University Paris-Saclay. The department is a member of the PhD program in Mathematics “Ecole Doctorale de Mathématiques Hadamard” (EDMH).


Sociologists at CREST use empirical data and quantitative methods to study questions of stratification and social inequality. We have a strong expertise in statistical methodology and a rich practice with national and international datasets. Our current work addresses questions of social mobility and inequality; demography, gender and the family; consumption and spending; lifestyles and cultural practices; environmental attitudes and actions; social networks; economic sociology; migration and immigration; health inequalities. Our monthly research seminar brings together French and international scholars and we have a proactive visiting scholar policy. Our faculty is also invested in the training of future quantitative sociologists. We teach courses in the ENSAE curriculum and in the Master program in Quantitative Sociology and Demography. We have a dynamic group of doctoral students who participate actively in the daily life and research activities of the department.


The financial department is specialized in the quantitative analysis of finance and insurance problems. The topics studied in the Laboratory are diverse, but are characterized by the need to use both theory and applications. Without being exhaustive, the following list gives an idea of the themes studied in the laboratory:

  • dynamic models in finance, credit risk, multivariate volatility models, estimation of risk measures, conditional and systemic risks,
  • bubble models and noncausal processes, stochastic models for energy, Lévy processes, granularity adjustments, longetivity risk, portfolio optimization.

Research programs


LabEDS: Laboratory for Economics and Decision science is a facility within the CREST and Department of Economics of École polytechnique where we conduct experiments to study economics decision making and to provide a hands-on and interactive teaching experience for our students. We cover the Paris-Saclay campus touching a variety of subjects and scholars.
Experimental Economics has developed into one of the most productive and empirically relevant research fields in Economics since the mid-1990s. Experimental methods can be applied to empirically analzye and validate theories in all fields of economics and beyond.
Research by faculty members has focused in particular, but not exclusively, on ethical, rationality, and competition aspects. The experimental method also lends itself to interdisciplinary work between economists and, among others, political scientists, psychologists, sociologists, biologists, and mathematicians.
We also tend to develop our research interest around the behavioral economics using novel technics from neuro and cognitive sciences to capture information’s during the decision making process.



Labex ECODEC is a government-financed research initiative dedicated the study of Economics and Decision Making, merging academics in economics and statistics from Ecole Polytechnique and ENSAE (and their joint research center CREST) as well as HEC Paris. ECODEC is aimed at promoting research work undertaken by researchers of participating entities, implementing high-level training programs (PhD, training for top-level civil servants…), building partnerships with private companies, especially in sectors such as marketing, data analysis, strategic management, HR, or corporate decision evaluation.



The Secure Data Access Centre (CASD) is an equipment that allows users (researchers, datascientists, consultants…) to access and work with individual and highly-detailed microdata, which are therefore subject to confidentiality measures, in the most secure conditions. Today, over 1000 users are working with such data through CASD.



Led by Isabelle Méjean, the ERC Starting Grant TRADENET (2016-2020) studies international trade relationships using a firm-to-firm perspective. It first asks what determines the structure of firm-to-firm trade networks and its heterogeneity across firms. Second, it studies how the form of these networks affects the propagation of shocks within and across countries. It analyzes the consequences for various macroeconomic outcomes such as the volatility of aggregate trade, comovements across countries or deviations from the law of one price.


Led by Pierre Picard, WINnERS seeks to build weather and climate resilient agricultural supply chains by modelling weather and climate risk exposure through state-of-the-art technology, investing in smallholder farmers to improve farming practices and credit worthiness, sharing risk across supply chain actors with weather and climate index-based insurance services, and promoting supportive regulatory environments for insurance products in developing countries.
By bringing together academics from Imperial College London, the University of Reading, École polytechnique, and the University of Hamburg, climate scientists are partnering with insurance industry experts and global food buyers to build products and services that protect both food buyers and producers from weather and climate driven risks.




In January 2003, the Ecole Polytechnique and the Ecole Polytechnique Foundation created a teaching and research chair on the theme of sustainable development. Entirely financed by EDF, and currently let by Dominique Bureau (Ecole Polytechnique and CEDD), the research undertaken within this chair is carried out in an interdisciplinary spirit where the economic and social sciences cooperate with the biological sciences and the physical sciences.



Currently led by Patricia Crifo (Ecole Polytechnique) and Sébastien Pouget (Toulouse School of Economics), The research chair “Finance Durable et Investissement Responsible” was created in 2007 at the initiative of Association Française de Gestion Financière (AFG) and gathers academic experts from Ecole Polytechnique and Toulouse School of Economics on the themes of responsible investment. It is sponsored by a dozen of asset management companies and other institutions involved in such investments. It finances various research activities and PhD students and and holds regular conferences and meeting.



Led by Pierre Cahuc (CREST and Ecole Polytechnique) and Yann Algan (Sciences Po), the Secure Career research chair promotes research on the workings of the labor market and the effectiveness of labor market regulation, with a particular focus on the French labor market. The chair follows a multidisciplinary approach and uses the most recent research in economics, management, political science, law, and psychology. Its sponsors are the Ministry of Labour, Groupe ALPHA, Randstad, UNEDIC and Pôle Emploi.



Led by Jean-Pierre Ponssard (Ecole Polytechnique) and Gaël Giraud (AFD), the Energy and Prosperity academic Chair was created in 2015 to inform decisions of public and private actors in managing the energy transition. The Chair’s research deals with the impacts of energy transition on national economies (growth, employment, debt), on specific sectors (transportation, construction, energy, finance) and with the associated financing issues. Hosted by the Risk Foundation, the chair has the support of ADEME, Air Liquide, the French Development Agency, the Caisse des Dépôts, Mirova , Schneider Electric and SNCF .



Led by Christian Gourrieroux (CREST) and Christophe Pérignon (HEC Paris), the Regulation and Systemic Risks Chair (also known as “Chaire ACPR”) aims at organizing research activities, facilitating contacts between the academic community and the ACPR, and developing a center of reflection and proposals, open internationally, with regard to the management of systemic risk. It is sponsored by Autorité de Contrôle Prudentiel et de Regulation (ACPR).