Dear colleagues, We are thrilled to announce that the
ROADEF/EURO 2026 Challenge is officially open!
https://roadef.org/challenge/
This year's edition, titled "Keep the Flow!", focuses on the optimization problem of T-Adaptive Segment Routing (T-ASR). Proposed by Orange Research, the challenge invites participants to design efficient optimization algorithms for routing in large-scale telecommunication networks, taking into account scheduled maintenance interventions and reconfiguration budgets. Watch the official teaser for a quick overview of the problem: https://youtu.be/D1jubmosffI?si=tHLxgXFQkhauTjok Key resources already available:
Prizes & Participation: The competition is endowed with a total prize pool of €35,000, with categories for best teams, junior researchers (students), and scientific contributions. Find all information regarding rules, organization, and the roadmap (Sprint, Qualification, and Final phases) at https://roadef.org/challenge/
| February, 25th 2026 | ROADEF 2026 : Challenge begins. Subject available. | |
| March, 06th 2026 | Checker and Set A of instances available. Registration starts. | |
| June, 01st 2026 | (Optional) Sprint on set A instances. Deadline for submitting computational results table, and solutions files. | |
| June, 15th 2026 | Sprint results. Set B of instances available. | |
| July, XXth 2026 | IFORS 2026 : Special Session | |
| September, 14th 2026 | Deadline for submission on qualification phase on set B of instances. | |
| October, 05th 2026 | Qualification results. Set of C instances available | |
| January, 15th 2027 | Deadline for submitting final program | |
| February, XXth 2027 | ROADEF 2027 : Final phase results. Set of X instances available | |
| November, XXth 2027 | Deadline for submitting paper to scientific prize. | |
| February, XXth 2028 | ROADEF 2028 : Scientific Prize results. |
We look forward to your innovative solutions and wish you the best of luck! Sincerely, The ROADEF challenge team: Zacharie Ales, Ronan Bocquillon, Eric Bourreau, Safia Kedad-Sidhoum, David Savourey. The Orange Research challenge team: Amal Benhamiche, Yannick Carlinet, Morgan Chopin, Éric Gourdin, Nancy Perrot.