Welcome to the website of the BOS!
The Bilevel Optimization Society since 2025.
The bilevel optimization society (BOS) is a technical section of the Mathematical Optimization Society (MOS). The goal of the BOS is to create and maintain a community of researchers that recognize their work as related to bilevel optimization, while at the same time expanding its basis and promoting its outreach within and outside academia. This is achieved through the organization of:
- the International Conference on Bilevel Optimization (ICBO) series;
- the organization of the bi-weekly BOS Webinar; and,
- the dissemination and promotion of research and information related to bilevel optimization.
Upcoming Events
This is a (non-comprehensive) list with upcoming conferences with bilevel optimization sessions:
- Jul 08 - Jul 10, 2026: EUROPT 2026 – Bilevel Optimization Stream
- Aug 02 - Aug 05, 2026: International Conference on Bilevel Optimization – ICBO 2026
Oct 06 - Oct 10, 2025: Kaiserslautern Applied and Industrial Mathematics Days – KLAIM 2025
If you want to promote your bilevel session in a conference, please email us.
News
| Jun 02, 2026 | BOS Webinar recordings availableCheck the recordings of our webinar! |
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| Apr 17, 2026 | ICBO Registration is now open!Check the conference webpage to register! |
| Feb 07, 2026 | BOS WebinarStay tuned! On April 14th we will start our BOS webinar with great invitees and talks! Check out the BOS Webinar webpage to see the schedule. |
| Feb 07, 2026 | EUROPT 2026 – Bilevel Optimization StreamThe 23rd EUROPT Conference on Advances in Continuous Optimization (EUROPT 2026) will be held in Linz, Austria, on July 8–10, 2026, focusing on recent advances in continuous optimization, including theory, algorithms, software, and applications. A dedicated stream on Bilevel Optimization is being planned. Researchers interested in organizing an invited session or presenting a talk within this stream are invited to get in touch.
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| Aug 01, 2025 | We are happy to announce the place of our next ICBO 2026!The International Conference on Bilevel Optimization 2026 will be hosted jointly by the University of Pittsburgh and Carnegie Mellon University in August 2026. |
| May 01, 2025 | We have the second edition of our newsletter!Now we talk about our Chair-elect, Ted Ralphs, and how the ICBO 2026 is taking form. You can download it here. |
| May 01, 2025 | We have the first edition of our newsletter!You can download our first newsletter. You can download it here. |
| Mar 21, 2025 | Call for nominations of Chair-Elect !Call for Nominations for the position of Chair-Elect of the Committee of the Bilevel Optimization Society (COBOS) |
| Mar 09, 2025 | Open Call for the next ICBO 2026!Check the ICBO tab for the details of the open call to host the next International Conference on Bilevel Optimization in 2026. |
| Mar 05, 2025 | We have a new webpage! |
Blog
| Jan 01, 2025 | The BOS and its first COBOS! |
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