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Martin Schmidt

@schmaidt.bsky.social
178 followers 127 following 277 posts

This is about craftbeer & homebrewing, sourdough bread baking, mathematical optimization, OR, photography, cooking, and random rant!

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Martin Schmidt @schmaidt.bsky.social · 24/09/2026
I spent two and a half weeks travelling through Croatia, and did some beer history research along the way. Explore the entries and their sources on Beer Chronicles: beer-chronicles.org?tags=Croatia...
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Yasmine Beck @yasminebeck.bsky.social · 22/09/2026
Join us for the next #BOSWebinar on September 29 at 4 PM CEST with two 20-minute talks! 📩 Meeting details will be shared via the #BOS mailing list. Not yet a BOS member? You can register for free at: bileveloptimization.org/membership 🔗 bileveloptimization.org/bos_webinar #Bilevel
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Yasmine Beck @yasminebeck.bsky.social · 21/09/2026
🎥 The recording of our last #BOSWebinar with Fernando Camacho is now online! You can rewatch it at youtu.be/VaKYSoochAI?... 🔗 More information on the #BOS #Webinar Series and upcoming talks: bileveloptimization.org/bos_webinar #Bilevel #Optimization #BilevelOptimization #MOS
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Martin Schmidt @schmaidt.bsky.social · 18/09/2026
On our way to Croatia, we stopped in Slovenia—so I did some beer history research. From Laško and Union to hop fields and craft beer, here’s the result: Slovenia on Beer Chronicles. beer-chronicles.org?tags=Slovenia
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Yasmine Beck @yasminebeck.bsky.social · 15/09/2026
Join us today at 4 PM CEST for the next #BOSWebinar with Fernando! #Bilevel #Optimization #BOS #MOS
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Martin Schmidt @schmaidt.bsky.social · 14/09/2026
Beer history isn’t just about WHEN. It’s also about WHERE. 🗺️🍺 Explore the places behind the stories with the new Beer Map on Beer Chronicles. Where will you start? beer-chronicles.org/map #BeerHistory #BeerChronicles
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Martin Schmidt @schmaidt.bsky.social · 06/09/2026
Smoke-free kilns changed brewing. Bamberg kept its Rauchbier tradition alive—and smoked beer found new expressions, including Alaskan Smoked Porter in 1988. Explore the story: beer-chronicles.org?tags=Smoked+... #BeerChronicles #BeerHistory #Timeline #BeerCulture #CraftBeerHistory #CraftBeer
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Martin Schmidt @schmaidt.bsky.social · 05/09/2026
Where to start with beer history? Explore the Milestone tag on Beer Chronicles for a curated selection of timeline events. Pick an entry, follow its sources, and keep exploring. beer-chronicles.org?tags=Milestone
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Martin Schmidt @schmaidt.bsky.social · 03/09/2026
From beer engines and crown corks to cans, nitrogen dispense, and one-way kegs: explore how innovation changed beer’s journey from brewery to glass. beer-chronicles.org?tags=Packagi... #BeerHistory #BeerTechnology #beer #craftbeer #history #timeline
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Martin Schmidt @schmaidt.bsky.social · 31/08/2026
Belgian beer is far bigger than Trappists and lambic. Follow the history of saison, witbier, Spéciale Belie, Duvel, and Belgium’s remarkable beer diversity in our Storyline. beer-chronicles.org/storylines/b... #BeerHistory #Craftbeer #Belgium #Trappists #Lambic #Gueuze #BeerChronicles #History
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Martin Schmidt @schmaidt.bsky.social · 25/08/2026
Altbier’s story is Düsseldorf’s story: a top-fermenting tradition preserved through lager’s rise, shaped by historic house breweries, and later carried nationwide by Diebels. Explore all seven connected entries: beer-chronicles.org?tags=Altbier... #BeerHistory
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Yasmine Beck @yasminebeck.bsky.social · 25/08/2026
Season 2 of the #BOSWebinar starts on September 1 at 4 PM CEST with two 20-minute talks! 📩 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 #Bilevel #MachineLearning #MOS
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Martin Schmidt @schmaidt.bsky.social · 24/08/2026
Brewing became a science when brewers learned to measure it. From thermometers and saccharometers to pure yeast cultures, pH, and standardized analysis: 🔬 beer-chronicles.org?tags=Quality... #BeerHistory #BeerScience
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Martin Schmidt @schmaidt.bsky.social · 21/08/2026
From Cologne’s top-fermented brewing tradition to the Kölsch Convention and European protection, Kölsch is beer with a strong sense of place. 🍺 beer-chronicles.org?tags=K%C3%B6... #BeerHistory #Kölsch #BeerChronicles
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Martin Schmidt @schmaidt.bsky.social · 19/08/2026
British ale is much more than IPA. From pale ale and bitter to mild, cask beer, and CAMRA, this storyline traces a defining tradition of British pub culture. 🍺 beer-chronicles.org/?tags=Bitter%2CPale+Ale%2CCask+Beer&tagMode=any #BeerHistory #BeerChronicles #UK #BritishBeer #CAMRA #CraftBeer
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Martin Schmidt @schmaidt.bsky.social · 17/08/2026
From London porter to Guinness Draught, this storyline traces the history of porter and stout through brewing, trade, and technology. 🍺 beer-chronicles.org/?tags=Porter%2CStout%2CGuinness%2CImperial+Stout%2CRussian+Imperial+Stout&tagMode=any #BeerHistory #Porter #Guinness #Stout #London #Beer
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Martin Schmidt @schmaidt.bsky.social · 16/08/2026
Water shaped beer history — from Burton-on-Trent and Munich Helles to brewing science and Sarajevo. Explore the **Water** storyline on Beer Chronicles: beer-chronicles.org/?tags=Water #BeerHistory #BeerChronicles
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Martin Schmidt @schmaidt.bsky.social · 14/08/2026
🍓🍰🍺 **When sour beer became dessert.** Mango lassi, blueberry muffins, huge amounts of fruit: explore the rise of **Smoothie and Pastry Sours** and the breweries that pushed sour beer in extravagant new directions. beer-chronicles.org?tags=Smoothi...
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Martin Schmidt @schmaidt.bsky.social · 14/08/2026
Paper Alarm! Our paper "Computational Methods for the Household Assignment Problem" (jointly with Lucas Moschen, Ralf Münnich, and Ulf Friedrich) is now published online in MMOR. It's open access - go for it! link.springer.com/article/10.1...
link.springer.com
Computational Methods for the Household Assignment Problem - Mathematical Methods of Operations Research
We consider the problem of assigning the entries of a household data set to real-world address data. This household assignment problem occurs in the geo-referencing step of spatial microsimulation mod...
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Martin Schmidt @schmaidt.bsky.social · 13/08/2026
🔎🍺 **Beer history is never finished.** Found a mistake or a better source? Every Beer Chronicles entry now has a **“Suggest a correction or additional source”** option. Help make the timeline better. 🍻 beer-chronicles.org
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Martin Schmidt @schmaidt.bsky.social · 12/08/2026
🧫🍺 The invisible force behind every great beer. From Pasteur and pure yeast cultures to genomics and the discovery of lager yeast’s missing parent: explore the **Yeast** storyline on Beer Chronicles. 🔬 beer-chronicles.org?tags=Yeast
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Martin Schmidt @schmaidt.bsky.social · 08/08/2026
🧂🍺 Salty. Sour. Centuries old. From medieval Goslar to Leipzig, near disappearance and revival: explore almost 700 years of **Gose** history on Beer Chronicles. 🔗 beer-chronicles.org?tags=Gose #BeerChronicles #BeerHistory #Timeline #BeerCulture #HistoryNerd
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Martin Schmidt @schmaidt.bsky.social · 06/08/2026
🌾🍺 Behind every great beer is great malt. The **Malt** storyline on Beer Chronicles traces the innovations that transformed brewing—from smoke-free kilns to modern specialty malts. 🔗 beer-chronicles.org?tags=Malt #BeerChronicles #BeerHistory #Timeline #BeerCulture #HistoryNerd #CraftBeerHistory
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Martin Schmidt @schmaidt.bsky.social · 29/07/2026
🌿🍺 A small flower. A huge impact. For over 1000 years, #hops have transformed #beer - adding bitterness, aroma, stability, and helping shape many of the world's most influential beer styles. Explore the **Hops** storyline on Beer Chronicles: 🔗 beer-chronicles.org?tags=Hops
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Martin Schmidt @schmaidt.bsky.social · 28/07/2026
🏺🍺 Beer history is far older than most people think. The **Early Beer History** storyline on Beer Chronicles traces brewing from some of the earliest archaeological evidence to medieval monasteries—connecting thousands of years of brewing history. 🔗 beer-chronicles.org?tags=Early+B...
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Martin Schmidt @schmaidt.bsky.social · 22/07/2026
🍺 Beer Chronicles has grown to **430+ entries**. More importantly, it has become a network of connected beer histories. Explore the stories of IPA, wheat beer, Trappists, homebrewing, porter, hops, yeast, and much more—all connected in one interactive timeline. 🔗 beer-chronicles.org
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Martin Schmidt @schmaidt.bsky.social · 13/07/2026
That's a nice start into the new week: Our paper "On Coupling Constraints in Pessimistic Linear Bilevel Optimization" (with D. Henke, @hlefebvr.bsky.social & J. Thürauf) is now published in JOTA. It's open access; go for it: link.springer.com/article/10.1...
link.springer.com
On Coupling Constraints in Pessimistic Linear Bilevel Optimization - Journal of Optimization Theory and Applications
The literature on pessimistic linear bilevel optimization with coupling constraints is rather scarce and it has been common sense that these problems are harder to tackle than pessimistic bilevel prob...
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Martin Schmidt @schmaidt.bsky.social · 12/07/2026
🍺 New Trappist entries are now live on Beer Chronicles. Abbeys, brewing traditions, protected names, iconic beers — and a story where beer, place, faith, discipline, and identity are deeply connected. Explore the Trappist beer-history rabbit hole at beer-chronicles.org?tags=Trappists.
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Martin Schmidt @schmaidt.bsky.social · 11/07/2026
🍺 35 IPA entries are now live on Beer Chronicles. From pale malt and Burton-on-Trent to American craft beer, Double IPA, NEIPA, and Cold IPA. One style. Many chapters. A very deep beer-history rabbit hole. Explore it at beer-chronicles.org?tags=IPA.
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ISMP 2027 – Amsterdam @ismp2027.bsky.social · 08/07/2026
Centrum Wiskunde & Informatica (CWI) joins #ISMP2027 as a diamond sponsor! We are grateful for CWI's support of the 26th International Symposium on Mathematical Programming. 🗓️ July 25–30, 2027 📍Amsterdam 🔗 ismp2027.mathopt.nl #MathematicalProgramming #OperationsResearch #Optimization #MOS
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Yasmine Beck @yasminebeck.bsky.social · 09/07/2026
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
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Martin Schmidt @schmaidt.bsky.social · 05/07/2026
🇦🇹🍺 On my way to Vienna — perfect timing: The new Vienna Lager entry is now live on Beer Chronicles. 19th-century brewing history, Anton Dreher, lager technology, and one of Europe’s great amber beer traditions. Explore it at beer-chronicles.org?tags=Vienna+...
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Martin Schmidt @schmaidt.bsky.social · 29/06/2026
🍺 New on Beer Chronicles: You can now share direct links to filtered views. Filter by category, tags, years, or search terms — and the link remembers exactly what you selected. Perfect for sending someone into your favorite beer-history rabbit hole. Example: beer-chronicles.org?from=1600&ta...
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Martin Schmidt @schmaidt.bsky.social · 25/06/2026
Tiny UX update on beer-chronicles.org 🍺 You can now switch the timeline order more clearly: ↓ Newest first ↑ Oldest first Want to jump straight into the latest additions? Go newest first. Want to travel through beer history from the beginning? Go oldest first. #BeerChronicles #BeerHistory
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Martin Schmidt @schmaidt.bsky.social · 24/06/2026
My tiny side project got a new UX update: Search beer history. Instantly. New on Beer Chronicles: full-text search across all event titles and descriptions. Find what you're looking for in seconds. 👉 beer-chronicles.org #beerchronicles #beer #history #timeline #beerfacts #craftbeer #UXUpdate
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Yasmine Beck @yasminebeck.bsky.social · 22/06/2026
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
youtu.be
Multi-Leader-Follower games without Nash equilibrium interactions
YouTube video by Bilevel Optimization Society Webinar
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Martin Schmidt @schmaidt.bsky.social · 22/06/2026
Great start into the new week! Our paper "Computational Methods for the Household Assignment Problem" (w Ulf Friedrich, Lucas Moschen & Ralf Münnich) has today been accepted for publication in MMOR. The final version of the preprint is still available at Optimization Online: tinyurl.com/y2p2r6t5
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Yasmine Beck @yasminebeck.bsky.social · 20/06/2026
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
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Martin Schmidt @schmaidt.bsky.social · 19/06/2026
🍻 Beer Chronicles now has a Community category. Local festivals, their winners, rating apps, etc. – events and tools that celebrate the people behind beer culture. 👉 beer-chronicles.org #BeerHistory #Community #CraftBeer #BeerChronicles
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Martin Schmidt @schmaidt.bsky.social · 16/06/2026
🍻 I'm excited to announce that my Beer Chronicles is now live! An interactive timeline of beer history from 1000 to today – with filters for styles, breweries, laws, & more. 👉 beer-chronicles.org 130+ events & counting. Feedback very welcome. #beerhistory #craftbeer #beertimeline #brewinghistory
beer-chronicles.org
Beer Chronicles | Interactive Beer History Timeline
An interactive timeline of beer history from 1000 to present day
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Martin Schmidt @schmaidt.bsky.social · 12/06/2026
As usual - there are good and bad news: When do Mixed-Integer Games Admit Rational Equilibria? (jointly with Aloïs Duguet, Tobias Harks, and Julian Schwarz). Ready for reading at tinyurl.com/473t27ea!
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Martin Schmidt @schmaidt.bsky.social · 10/06/2026
Rügen. Kap Arkona. Germany. Summer 2020. Long exposure, dramatic sky, the Baltic sea pulling itself flat. Chaos turning into stillness — that's why I love this kind of photography. Same COVID summer. Same tripod. Different sea. 📷 #longexposure #seascape #balticsea #rügen
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Yasmine Beck @yasminebeck.bsky.social · 09/06/2026
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
bileveloptimization.org
BOS Webinar
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Yasmine Beck @yasminebeck.bsky.social · 02/06/2026
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
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Yasmine Beck @yasminebeck.bsky.social · 01/06/2026
🎥 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
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Martin Schmidt @schmaidt.bsky.social · 01/06/2026
Some more theoretical food for thought on #bilevel #optimization: Calmness of the Solution-Set Mapping for Linear Bilevel and Pricing Problems Jointly with @hlefebvr.bsky.social, Anton Svensson, and Johannes Thürauf) is now available at tinyurl.com/39p9mcd8! #orms @unitrier.bsky.social
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Yasmine Beck @yasminebeck.bsky.social · 19/05/2026
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
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Yasmine Beck @yasminebeck.bsky.social · 18/05/2026
The material will be published by Cambridge University Press as "Linear and Mixed-Integer Bilevel Optimization: Theory and Algorithms" by Yasmine Beck, Ivana Ljubić, and Martin Schmidt. This pre-publication version is free to view and download for personal use only.
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Yasmine Beck @yasminebeck.bsky.social · 18/05/2026
This book brings together years of work on bilevel optimization, covering theoretical foundations and algorithmic developments, with a focus on linear and mixed-integer settings. In 18 chapters, we provide a self-contained introduction to the field, bridging theory with modern algorithmic methods.
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Yasmine Beck @yasminebeck.bsky.social · 18/05/2026
📚 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
lnkd.in
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