Welcome to the Challenge Data website!!

Each year, we organize machine learning challenges from data provided by public services, companies and laboratories: general documentation and FAQ. Seasons begin in January; the challenges are introduced in the context of Stéphane Mallat's lesson at the Collège de France.
A prize ceremony for the best participants of the preceding season will be held in February at the College de France (03/02/2022).

For participants

Guide to create an account, choose your challenges and submit solutions.

For professors

Guide to create a course project from selected challenges and to follow student progresses.

For Challenge providers

If you are interested in organizing a challenge with us, do not hesitate to contact us!
Each year, we organize a call for projects during the summer. Projects are selected and beta-tested between september and december, and launched in january. Relevant information can be found in the providers guide.

About us

Challenge Data is managed by  the Data team (ENS Paris), in partnership with the Collège de France and the DataLab at Institut Louis Bachelier.
It is supported by the CFM chair, the PRAIRIE Institute and IDRIS from CNRS.



🕹 Challenges of the 2025 season 🕹


Real-time forecast of platform waiting time
Competitive challenge
Industrial
Regression
Anatomic structures segmentation with missing labels
Competitive challenge
Biology
Health
Segmentation
Behavioral Job Recommendation with Online Machine Learning and Collaborative Filtering
Competitive challenge
Economic sciences
Industrial
Classification
Predict parking violations!
Competitive challenge
Humanities
Industrial
Regression
InsurPrime: Can You Guess the Insurance Premium?
Competitive challenge
Economic sciences
Insurance
Regression
Parkinson's Disease: Predicting and Correcting Bias in Motor Score Evaluation
Competitive challenge
Biology
Neuroscience
Health
Regression
Improving Industrial Quality Control with Computer Vision
Competitive challenge
Industrial
Classification
Toxic gas identification
Competitive challenge
Chemistry
Industrial
Regression
EchoCem: Third Interface Echo Segmentation for Cement Quality Assessment
Competitive challenge
Physics
Industrial
Segmentation