Marco Lübbecke
@mluebbecke
professor of operations research at RWTH Aachen university, I like mathematical optimization in theory and practice; #orms, posts/likes mine
met Tamás Terlaky yesterday; he was the session chair of my very first conference presentation in 1996, almost 30 years ago...
iterative refinement algorithms is a recurring topic these days, in particular in column generation - Bart van Rossum presents recent work on problems where paths have a dedicated subpath structure (like refueling resets a resource) #ifors2026 #orms
under difficult light conditions: happy to meet Jialin from @springernature.com who has our book on (very central!) display - thank you, Jialin, for all your support! #ifors2026 link.springer.com/book/10.1007...
everyone, if this was not on your agenda, please do reconsider: tonight, in the main building courtyard, at 6pm: connect and mingle. support this important initiative! #ifors2026
Georgios Paschos of Amazon talked about their fulfillment optimization problems where they apply a lot of #orms check out lesson 2, you MIP lovers! #ifors2026
Harald Ponweiser from Austrian Railways ÖBB enthusiastically reports on the company's vision and service for a better society -- and it is heartwarming to see how they believe in and productively use operations research to accomplish this and move forward #ifors2026 #orms
three more pioneers were inducted to the IFORS hall of fame this morning, Hans-Jürgen Zimmermann, Andrès Weintraub, and Judith Liebman #ifors2026 Brigitte Werners accepted the award on Hans' behalf #orms
I would like to suggest this to my own university @rwth.bsky.social as well: apparently, at the University of Vienna, they remember "forgotten" women in science, and dedicate room names to their memory
Gründung der Fakultät für Informatik an der @rwth.bsky.social im Aachener Krönungssaal: dass Leif Kobbelt vorne nicht in T-Shirt und kurzer Hose steht, ist jetzt schon der Stilbruch des Jahres :)
this week, we laid Hans Jürgen Zimmermann to rest, a pioneer of operations research, who combined theory with practice, and disciplines with one another - he will be missed! #orms
Die Aktionswoche "Wissenschaft gegen Faschismus" (1.-7.6.) zielt auf die wissenschaftliche Auseinandersetzung mit der Gefahr autoritärer gesellschaftlicher Tendenzen, mit den Hochschulen als zentralem Ort der Debatte - ist Deine Uni schon dabei? wissenschaft-gegen-faschismus.de
it is rare that we four meet - but we had something to celebrate #orms link.springer.com/book/10.1007...
hey Aachen, der Frühling kommt; Zeit, die braunen Sachen einzumotten und der farbenfrohen Vielfalt zu frönen @afdverbotjetzt.bsky.social @aachenomas.bsky.social
Ich habe Studierende, die verdienen eine 1,0 und andere sind eher so im Dreierbereich; weil sich die Dreier aber nicht so gut damit fühlen, binde ich den sehr guten die Hände zusammen und bringe ihnen nur Unsinn bei. Ich versteh's einfach nicht. share.google/YKu3N334FBdW...
our #openaccess book on "branch-and-price" is finally published; you can download it here link.springer.com/book/10.1007... #orms @springernature.com
in the morning, Eduardo Uchoa presented the development of branch-and-price for vehicle routing in our column generation class; in the afternoon, together with Marc Pfetsch, we discussed future developments in SCIP -- a happy and productive day for us computational optimizers #orms
Emiliano Traversi and co-authors produced new lower bounds on several Ramsey numbers using integer programming #aussois2026 #orms
one of the non-scientific highlights of the #aussois2026 conference #orms
jetzt ist es offiziell: Malte Brettel gewinnt den Landeslehrpreis NRW in der Kategorie "Lehre zur Gründung innovativer Start-Ups" Herzlichen Glückwunsch, Malte! @rwth.bsky.social
Wahlbeteiligung in #Aachen angewachsen via www.aachener-zeitung.de/lokales/regi...