Get your abstracts ready, the submission platform for #ISMP2027 is opening soon!

ISMP 2027 – Amsterdam@ismp2027.bsky.social · 3w ago

📢 #ISMP2027 — Submissions opening soon! Submissions for the 26th International Symposium on Mathematical Programming will open on September 1, we look forward to your contributions! 🗓️ July 25–30, 2027 📍Amsterdam 🔗 ismp2027.mathopt.nl #MathematicalProgramming #OperationsResearch #Optimization #MOS

Season 1 of the #BOS #Webinar Series is in the books! Thanks to all speakers and everyone who joined! 🎥 All recordings will be available on YouTube: www.youtube.com/@BOSWebinar 🗓️ Season 2 starts on September 1, stay tuned for the program! 🔗 More information: bileveloptimization.org/bos_webinar

The recording and the slides of our latest #BOSWebinar with Didier Aussel are available! 🎥 Recording: youtu.be/TSelremyljc?... 📄 Slides: bileveloptimization.org/bos_webinar/... 🔗 More information on the #BOS Webinar Series: bileveloptimization.org/bos_webinar/ #Bilevel #BilevelOptimization

Multi-Leader-Follower games without Nash equilibrium interactions

YouTube video by Bilevel Optimization Society Webinar

youtu.be

Join us for the last session of the #BOSWebinar before the summer break! The session on June 23 at 4 PM CEST will feature two 20-minute talks by Sebastian Vasquez and Noah Weninger. 🔗 More information on the #BOS #Webinar series can be found at: bileveloptimization.org/bos_webinar #Bilevel

📢 Travel discount for #ISMP2027 participants Benefit from a 10% discount on Air France and KLM flights: ismp2027.mathopt.nl/img/travel/f... ✈️ Reservations: July 25, 2026 – July 30, 2027 ✈️ Departures: July 18–30, 2027 ✈️ Returns: July 25, 2027 – August 6, 2027 🔗 ismp2027.mathopt.nl #MOS

Join us today at 4 PM CEST for the next #BOSWebinar with Didier Aussel! 🔗 More information on the #BOS Webinar Series and upcoming talks can be found at: bileveloptimization.org/bos_webinar #MathematicalProgramming #SLMF #MLMF #BilevelOptimization #MOS

Yasmine Beck@yasminebeck.bsky.social · 2mo ago

Don't miss the next #BOSWebinar on June 9 at 4 PM CEST, featuring a 40-minute presentation by Didier Aussel. 🔗 bileveloptimization.org/bos_webinar 📩 Details will be shared via the BOS mailing list. Not a #BOS member? Register for free at bileveloptimization.org/membership! #BilevelOptimization

Don't miss the next #BOSWebinar on June 9 at 4 PM CEST, featuring a 40-minute presentation by Didier Aussel. 🔗 bileveloptimization.org/bos_webinar 📩 Details will be shared via the BOS mailing list. Not a #BOS member? Register for free at bileveloptimization.org/membership! #BilevelOptimization

🎥 The recordings of our last #BOSWebinar with Bo and Sadegh are now available to rewatch on our YouTube channel: 🎙️ Bo Lin: youtu.be/U75v_IkLxd4?... 🎙️Mohammad Sadegh Salehi: youtu.be/G1LUtJd8FDU?... #MOS #MathematicalProgramming #Bilevel #BilevelOptimization #BOS

Join us today at 4 PM CEST for the #BOS Webinar with Bo and Sadegh! 📩 If you are not yet a (free) BOS member and have not received the meeting details, text me if you would still like to join. 🔗 bileveloptimization.org/bos_webinar #MachineLearning #Bilevel #Optimization #BilevelOptimization #MOS

Yasmine Beck@yasminebeck.bsky.social · 3mo ago

The next #BOSWebinar takes place on May 26 at 4 PM CEST, featuring two 20-minute talks by Bo Lin and Mohammad Sadegh Salehi. 📩 Details will be shared via the #BOS mailing list. Not yet a BOS member? Register for free at bileveloptimization.org/membership. 🔗 bileveloptimization.org/bos_webinar

The next #BOSWebinar takes place on May 26 at 4 PM CEST, featuring two 20-minute talks by Bo Lin and Mohammad Sadegh Salehi. 📩 Details will be shared via the #BOS mailing list. Not yet a BOS member? Register for free at bileveloptimization.org/membership. 🔗 bileveloptimization.org/bos_webinar

📚 Excited to share the pre-publication PDF of our book Linear and Mixed-Integer Bilevel Optimization: Theory and Algorithms (with Ivana Ljubić and @schmaidt.bsky.social), which is now in production with CUP. 🔗 You can access it at yasminebeck.github.io/files/bileve... #BilevelOptimization #BOS

🎥 The recording of our latest #BOS Webinar with Miguel Anjos is now available on YouTube! You can rewatch his talk here: www.youtube.com/watch?v=dg8e... 🔗 More information on the BOS Webinar Series: bileveloptimization.org/bos_webinar/ #Bilevel #Optimization #BilevelOptimization #MOS

📢 Streams for #ISMP2027 Working on a paper? With 25 streams spanning theory, algorithms, and applications, ISMP 2027 offers a place to present and discuss your latest research in mathematical programming. 📄 Submissions open on September 1, 2026! 🗓️ July 25–30, 2027 📍Amsterdam 🔗 ismp2027.mathopt.nl

Join us today at 4 PM CEST for the #BOS Webinar with Miguel Anjos! Looking forward to another exciting session and discussion. 📩 If you are not yet a (free) BOS member and have not received the meeting invitation, text me if you would still like to join. 🔗 bileveloptimization.org/bos_webinar

Yasmine Beck@yasminebeck.bsky.social · 3mo ago

Don’t miss the next #BOS Webinar on May 12 at 4 PM CEST, featuring a 40-minute presentation by Miguel Anjos. 🔗 bileveloptimization.org/bos_webinar 📩 Details will be shared via the BOS mailing list. Not yet a BOS member? Register for free at bileveloptimization.org/membership! #BilevelOptimization

🎥 Our latest #BOS Webinar with Martina Cerulli and Kübra Tanınmış is now online! You can now rewatch both talks on our YouTube channel: 🎙️ Martina Cerulli: youtu.be/pNeY-EOhRvM?... 🎙️Kübra Tanınmış: youtu.be/OR9JElQ7DWE?... #BilevelOptimization #Bilevel #Optimization #MOS #MathematicalProgramming

Pairwise Interdiction Problems

YouTube video by Bilevel Optimization Society Webinar

youtu.be

📢 New #ORMS preprint! Our paper on exact solution methods for k-delete recoverable robust combinatorial optimization problems (with Christina Büsing and Ivana Ljubic) is now online! 🔗 Interested? You can access it here: optimization-online.org?p=34703 #RobustOptimization #BranchandCut #MILP #CCG

Don’t miss the next #BOS Webinar on May 12 at 4 PM CEST, featuring a 40-minute presentation by Miguel Anjos. 🔗 bileveloptimization.org/bos_webinar 📩 Details will be shared via the BOS mailing list. Not yet a BOS member? Register for free at bileveloptimization.org/membership! #BilevelOptimization

Don't miss the #BOS Webinar today with Martina Cerulli and Kübra Tanınmış! Join us at 4:00 PM CEST for two exciting talks and discussion. 🎥 You can now also watch the recording of our previous session with Stephan Dempe at www.youtube.com/watch?v=JI42...

Transformation of Bilevel Optimization Problems into Single Level Ones

YouTube video by Bilevel Optimization Society Webinar

youtube.com

Yasmine Beck@yasminebeck.bsky.social · 4mo ago

The next #BOS Webinar takes place on April 28 at 4 PM CEST, featuring two 20-minute talks by Martina Cerulli and Kübra Tanınmış. 🔗 bileveloptimization.org/bos_webinar 📩 Details will be shared via the BOS mailing list. Not yet a BOS member? Register for free at bileveloptimization.org/membership!

Interested in #bilevel #optimization but unsure how to dive in? We've got you covered: take a look at our new book! 📚 In 18 chapters, we take you through a clear, self-contained journey into linear and mixed-integer #BilevelOptimization, bridging theory with state-of-the-art algorithms. #BOS

Martin Schmidt@schmaidt.bsky.social · 4mo ago

Our book "Linear and Mixed-Integer Bilevel Optimization: Theory and Algorithms" (w @yasminebeck.bsky.social & I. Ljubic) will be published soon but you can use the freely available pre-publication version from now on. This is the direct link to the PDF: tinyurl.com/34m8yrfu. Spread the word! 1/3

The next #BOS Webinar takes place on April 28 at 4 PM CEST, featuring two 20-minute talks by Martina Cerulli and Kübra Tanınmış. 🔗 bileveloptimization.org/bos_webinar 📩 Details will be shared via the BOS mailing list. Not yet a BOS member? Register for free at bileveloptimization.org/membership!

Book news 📚 A major milestone for us, the book is finally done, looking forward to sharing it with you soon! #Bilevel #Optimization #BOS

Martin Schmidt@schmaidt.bsky.social · 4mo ago

It's done! Our book "Linear and Mixed-Integer Bilevel Optimization: Theory and Algorithms" (jointly with @yasminebeck.bsky.social and Ivana Ljbuic) is sent to the publisher! 353 pages 18 chapters 223 references > 40 figures > 50 examples > 60 exercises

Over 60 participants joined for the kickoff of the #Bilevel #Optimization Webinar Series—what a great start! 🚀 The session featured an opening by Alain Zemkoho, followed by a talk by Stephan Dempe and a very lively discussion with the audience. Join us on April 28 for the next edition. Stay tuned!

Don't miss this opportunity to connect with leading experts and fellow young OR researchers! The abstract submission deadline for the next #EUROYoung Workshop has been extended until 24 April! Looking forward to see you in Lugano 🇨🇭, 14–16 October, 2026! #EUROYoung2026 #Lugano #ORMS

Gentle #bilevel #optimization reminder: Today and tomorrow is your last chance to submit an abstract to the "International Conference on Bilevel Optimization" ... Let's meet in Pittsburgh! bileveloptimization.org/icbo/2026/su...

🚀 Join us next Tuesday, April 14, 2026, at 4 PM CEST for the kickoff of the new #BOS Webinar Series! 🎙️ BOS President Alain Zemkoho will kickoff this new initiative, followed by Stephan Dempe who will speak about single-level reformulations of bilevel problems. Abstract👇 #BilevelOptimization #MOS

🚀 The #BilevelOptimization Webinar Series kicks off next Tuesday! Join us for the inaugural session with an opening by #BOS President Alain Zemkoho, followed by a 40-minute talk by Stephan Dempe. We hope to see many of you there! Not on the BOS mailing list yet? Send me a DM for the meeting link.

Yasmine Beck@yasminebeck.bsky.social · 6mo ago

Free Tuesday afternoon? Then I have something for you! 🚀 We're launching the #BOS Webinar Series—a bi-weekly seminar on theoretical, computational, and applied #BilevelOptimization 📆 Tuesdays at 4 pm CET via MS Teams
 🎙️ 40- or 2x20-minute talks + discussion
 🔗 bileveloptimization.org/bos_webinar

It's done! Our paper BOBILib: Bilevel Optimization (Benchmark) Instance Library (with Johannes Thürauf, Thomas Kleinert, Ivana Ljubic, and Ted Ralphs) is finally published in MPC! It’s open access. And just a reminder: The website of the library is this one: bobilib.org Use it and spread the word!

The #ICBO2026 abstract submission deadline is coming soon: bileveloptimization.org/icbo/2026/in... I hope we meet later this year in Pittsburgh! #orms #conference #bilevel #optimization

📢 Semi-Plenary Speakers for #ISMP2027! We are pleased to announce the semi-plenaries for the 26th International Symposium on Mathematical Programming. Join them to explore advances, challenges, and opportunities in mathematical optimization. 🗓️ July 25–30, 2027 📍Amsterdam 🔗 ismp2027.mathopt.nl #MOS

“MIP approaches are a dead end.” That‘s a reviewer comment I recently received on a paper about traffic modeling. So, naturally, I teamed up to write another MIP paper on traffic networks. Here’s our new #ORMS preprint: optimization-online.org?p=34014 Dead end? Judge for yourselves 😉