Proof-reading our new book on bilevel optimization. The content is almost finalized … Most likely, you will find it online in 2026! By the way: our = @yasminebeck.bsky.social, Ivana Ljubic, and myself! Follow here for more updates during the next weeks and months!

It took quite some time, but our paper "Column Generation in Column-and-Constraint Generation for Adjustable Robust Optimization with Interdiction-Type Linking Constraints" (jointly with @hlefebvr.bsky.social & J. Thürauf) has now been accepted for publication in MPC: tinyurl.com/37mjskha

Today, we had the last EURO WISDOM YW4OR Webinar of 2025! 🙏 Dr Beck @yasminebeck.bsky.social, Dr Monaci, Dr Ramirez Ayerbe @jasoneramirez.bsky.social for the presentations! 🙏 Prof Vidal @vidalthi.bsky.social for the questions! Recording soon in YouTube! @euro-wisdom.bsky.social #WomenInSTEM

A long time #NEIPA experiment and a new #wine #beer hybrid on tap in my private #brewpub! Cheers 🍻

Save the date! The International Conference on Bilevel Optimization will take place from August 2-5, 2026, at the CMU and the University of Pittsburgh, USA! Here's all what you need to know right now: bileveloptimization.org/icbo/2026/in...

The game-theory weeks go on 😀 Today: How to solve a GNEP by solving a NEP? Here is the answer in our new paper "A One-Extra Player Reduction of GNEPs to NEPs" (jointly with David Salas from Chile and @hlefebvr.bsky.social from @unitrier.bsky.social): tinyurl.com/3mytcvwn #GameTheory #Mathematics

Still searching for remedies in case no exact equilibria exist? Here is our answer for #Walras equilibrium problems: Just try to minimize the regret! All the details can be found in our new preprint: tinyurl.com/2nwkb6pa. @unitrier.bsky.social #GameTheory #Mathematics #Optimization

What do you do if your mixed-integer Nash game does not have an equilibrium? You compute an approximate one! Here‘s how you can do this via branch-and-cut: optimization-online.org/wp-content/u...

Once upon a time in Stockholm, Sweden! A classic photo during a classic photo time during the day taking from a classic photo spot of the city. Anyways, I like it! #travelphoto #travelphotographer #bluehour #stockholm #sweden #sea #sky #cityscape #nightphotography #longtime #exposure #photography

Once upon a time in #Stockholm, #Sweden Let's move on with my little metro station series from Stockholm. Today, Part 3: #Rinkeby #travel #travelphoto #swedenphotography #metro #underground #travelphotographer

This was hard work but now we are happy! The #BOBILib paper has today been accepted for publication in Mathematical Programming Computation! Here's the final version of the preprint: optimization-online.org/wp-content/u...! And here's the website bobilib.org! Spread the word and use it! :-)

The 5th EUROYoung Workshop started yesterday! We were amazed by the incredible talk given by our first plenary speaker, @schmaidt.bsky.social #EUROYoung2025 #orms

German News Wrap-Up: „Wir verschieben die Debatte, weil wir uns nicht einig sind!“ Es grüßt der demokratische 💀 oh boy …

SCHMAIDT'S NERD BREWING presents ... VIENNA CALLING (Beer Festival Trier 2025 Edition) A bit more than a week to go!

Once upon a time in Stockholm‘s underground. Let’s continue this series of metro station #photos from #sweden with Solna Centrum Station!

You want to learn about Equilibrium Problems à la Nash, Stackelberg, Arrow & Debreu, ...? Then join us at the TRR 154 AUTUMN SCHOOL ON EQUILIBRIUM PROBLEMS www.trr154.fau.de/autumn-schoo...

Once upon a time in Stockholm‘s underground! A series about the #Stockholm metro stations was on my #photography todo list since 2022 when I was in this wonderful capital of #Sweden for the first time! This year, I finally found the time and here‘s the #photo of the first stop: #Akalla!

@yasminebeck.bsky.social is continuing her PhD-prize-collecting conference tour! This time the PhD prize of the German OR society! Congratulations! 💪

Once upon a time in #Stockholm, #Sweden Why not posting some old but unpublished shots from Stockholm while being in Stockholm again? #travel #travelphotos #blue #hour #bluehour #cityscape #gamlastan #wideformat #night #photography #nightphotography #travelphotography #travelphoto #scandinavia

You want to use the BOBILib (bobilib.org) instances to test your new bilevel optimization solver? And you don't want to code your own parser? No problem, use this one: gitlab.uni-trier.de/nlopt/mps-au...!

Once upon a time in Lausanne, Switzerland! #travel #blackwhite #blackwhitephotography #blackandwhite #lausanne #suisse🇨🇭 #suisse #schweiz #switzerland

Final deadline extension for the International Workshop on Algorithmic Optimization at @unitrier.bsky.social, Germany, which takes place September 23-26. Registration is open until Friday, August 15! Don't miss it! alop.uni-trier.de/event/intern...

SCHMAIDT'S NERD BREWING ... proudly presents ... HOLLE'S SUMMER JUICE 2025 I am slowly getting to where I want my New England IPA journey to head to. A bright-yellow-milky-hazy appearance, a stable and super-white head. #homebrew #brewing #brew #craft #beer #craftbeer #IPA #neipa #hazyipa #hazy

Once upon a time in Zurich! I don’t know why but I ignored the country for far too long. But this year, I had the chance to visit Switzerland 🇨🇭 twice and Zurich once.

Once upon a time at Lac Leman, #switzerland🇨🇭 ... A beautiful #lake with beautiful light. #Photo taken in March 2025. #lake #light #clouds #blackwhite #blackandwhite #blackandwhitephoto #blackwhitephotography #landscape #seascape #mountains #switzerland #schweiz #travel #travelphoto #roadtrip

Once upon a time in #Annecy For sure one of the most positive surprises in our #travel life so far — a beauty with a nice old town, #mountains, a beautiful #lake, good restaurants, and even some nice #craftbeer pubs 😉 #france #france🇫🇷 #travel #travelphoto #street #photography #streetphotography

Once upon a time in Zurich, Switzerland The Negrellisteg was on my #photography todo list since quite some time. This year, I was finally able to capture it! More of such stuff you'll find at www.schmaidt.de. #photo #traveling #travel #Zurich #Zürich #Switzerland #Schweiz #architecture

Yet another paper alert: Our paper "Mixed-Integer #Bilevel Optimization with Nonconvex Quadratic Lower-Level Problems: #Complexity and a Solution Method" (jointly with Immanuel Bomze and Andreas Horländer) is published in the Journal of Global #Optimization. link.springer.com/article/10.1...

Schmaidt's Nerd Brewing proudly presents ... SOL Y SAL #beer #craftbeer #craft #homebrew #homebrewing #mexican #lager #mexicanlager #Motueka #Gose #lime #lemon #kegerator #salt

The biggest publishing nightmare of my life came to an end this morning. Our paper "On a Tractable Single-Level Reformulation of a Multilevel Model of the European Entry-Exit Gas Market with Market Power" has now been published in its “publisher correction” version: link.springer.com/article/10.1...

That one has the potential to get a really nice juice! Let’s cold crash it now … #craftbeer #homebrew #beer #homebrewing #IPA #NEIPA #Hazy

What a happy yeast … #craftbeer #beer #homebrewing #homebrew #fermentation #NEIPA #NewEngland #IPA

Benjamin Netanjahu (aka known as a corrupt war lord) suggest Donald Trump (aka known as an idiot) for the Nobel prize for … P E A C E … O M G … when you think it cannot get more ridiculous, it happens!

Let the #baking never stop! This is one of my favorite recipes. A classic wheat-rye mix #sourdough #bread. Very easy to make, not much effort, but a really good and tasty result ... and, of course, with the rustic #crust that I personally love so much.

Once upon a time in the smallest micro #bakery of Germany 😉 As I said already yesterday: Let me try to use this nasty home office time as good I can: So yet another baking product! #baking #artisanbaking #doityourself #dough #recipe #lutzgeisslerrezept #lutzgeisslerhatdiebestenrezepte

Once upon a time in the former capital of the roman empire: #Trier! It's #pizza time again - because time is not scarce right now 🤪 I again used my favorite #dough #recipe by @antoniocapone92 (on #Insta) #artisanbaking #pizzafromthehomeoven #italylove #pizzalove #food #foodporn #doityourself

I accidentally ran into a time machine: COVID again. Shit. But I feel rather well, just a little cold. So let's use the time as I did during the pandemic shut-down weeks and months: Finally, I have some time to try a few new #baking #recipes that I had and have on my todo-list for quite some time.

Fermentation is done. All according to the masterplan. Sol y Sal is kegged. Let it rest and have a great light and fruity #beer for the summer! #homebrew #homebrewing #craftbeer #doityourself

Pizza time …

🟦 EURO Doctoral Dissertation Award 2025 – Winner! 🏆 Yasmine Beck (ESSEC) 𝗠𝗶𝘅𝗲𝗱-𝗜𝗻𝘁𝗲𝗴𝗲𝗿 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝗧𝗲𝗰𝗵𝗻𝗶𝗾𝘂𝗲𝘀 𝗳𝗼𝗿 𝗥𝗼𝗯𝘂𝘀𝘁 𝗕𝗶𝗹𝗲𝘃𝗲𝗹 𝗣𝗿𝗼𝗯𝗹𝗲𝗺𝘀 𝘄𝗶𝘁𝗵 𝗛𝗲𝗿𝗲-𝗮𝗻𝗱-𝗡𝗼𝘄 𝗙𝗼𝗹𝗹𝗼𝘄𝗲𝗿𝘀 🔗 Abstract: lnkd.in/d3i_9Smw #EDDA2025 #EURO2025

🟧 EURO Best EJOR Paper Award 2025 – Review Category #EABEP2025 | Sponsored by Elsevier 🏆 A Survey on Bilevel Optimization Under Uncertainty 👥 Yasmine Beck | Ivana Ljubic | Martin Schmidt 📍 Trier Univ. & ESSEC Business School 🔗 buff.ly/h8qemcB #EJOR #Elsevier

Thanks a lot for this wonderful collaboration, @yasminebeck.bsky.social and Ivana! I enjoyed it a lot and I learned a lot as well!

My Mexican Lager is waiting for kegging … #beer #craftbeer #brewing #homebrewing

After a long debate with reviewer #2, it's done now 😅 Our paper "Mixed-Integer Bilevel Optimization with Nonconvex Quadratic Lower-Level Problems: Complexity & a Solution Method" (with I. Bomze & A. Horländer) has been accepted for publication in Journal of Global Optimization tinyurl.com/3r4awzy3

A new version of the #BOBILib is online: bobilib.org! Moreover, the paper is also completely updated: optimization-online.org/wp-content/u... More instances! More and more tailored benchmark sets ... GO FOR IT and SPREAD THE WORD!

It is real. I really have a paper now with the words “Dantzig-Wolfe” in the title 😱 Here it is: "A Dantzig-Wolfe Single-Level Reformulation for Mixed-Integer Linear Bilevel Optimization: Exact & Heuristic Approaches" (jointly with @hlefebvr.bsky.social) All the details: tinyurl.com/mryecnr2

Registration for the International Workshop on Algorithmic Optimization at Trier University, Germany, is still open: alop.uni-trier.de/event/intern... The line-up of invited speakers is great: C. Costa, M. Heinkenschloss, M. Hintermüller, M. Labbé, M. Leal, M. de Santis, J. Thürauf, K. Welker!

New preprint for your weekend reading: „Branch-and-Cut for Mixed-Integer Generalized Nash Equilibrium Problems“ jointly with Alois Duguet, Tobias Harks, and Julian Schwarz. Here it is: tinyurl.com/3t3dzvr5!

Finally, a new paper is born: "On Multidimensional Disjunctive Inequalities for Chance-Constrained Stochastic Problems with Finite Support" (jointly w. Diego Cattaruzza, Martine Labbé, Matteo Petris, and @mariusroland.bsky.social). Here are all the details ... tinyurl.com/rkr53tss