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Research Campus MODAL

@fc-modal.bsky.social

Forschungscampus MODAL - Mathematical Optimization and Data Analysis Laboratories -- Smart solutions for the digital society https://forschungscampus-modal.de/?lang=en

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Research Campus MODAL @fc-modal.bsky.social · 4w ago

MODAL meets KI Park for discussing Optimization, Data, and AI Adoption. #FUBIC kipark.de. Kick-off for AI challenges at #FUBIC organized by Pia Gildein and Tim Conrad. @zuseinstitute.bsky.social

KI Park e.V. visits Research Campus MODAL.

JCMwave @jcmwave.bsky.social · 2mo ago

HOTSTEEL: Collaborative R&D of TU Berlin, HTW Berlin, OTH Regensburg, & JCMwave. Goal: Numerical optimization of steel production for reduction of energy losses and for reduction of CO2 emissions. Funded by the Senate of Berlin within ProFIT, co-financed by the European Regional Development Fund.

Computational Nano Optics @cnoatzib.bsky.social · 3mo ago

Just accepted: Roadmap on 5D Photonics - See our section on numerical methods in design optimization for resonant devices doi.org/10.1088/2399... @zuseinstitute.bsky.social @jcmwave.bsky.social @mathplusberlin.bsky.social @fc-modal.bsky.social‬

Roadmap on 5D Photonics for nano and beyond

Roadmap on 5D Photonics for nano and beyond , Demircan, Ayhan, Evlyukhin, Andrey B., Morgner, Uwe, Melchert, Oliver, Babushkin, Ihar, Zhang, Shihao, Biancalana, Fabio, Mei, Chao, Fan, Jintao, Yang, Pe...

doi.org

Research Campus MODAL @fc-modal.bsky.social · 4mo ago

ZIB team of Gioni Mexi and Coauthors wins the Land-Doig MIP Competition at #mip2026 @zuseinstitute.bsky.social @mathplusberlin.bsky.social www.zib.de/news/zib-tea...

Research Campus MODAL @fc-modal.bsky.social · 5mo ago

12th Workshop of the “Forschungscampus” Funding Initiative at #FUHUB: Representatives of the research campi presented their visions for flagship clusters and innovation transfer – engaging discussions, MODAL lab presentations, and networking included. #BMFTR #Forschungscampus #ScienceInnovation

12th Workshop of the “Research Campus” Funding Initiative
The Research Campus Community visits FUHUB

On May 11–12, 2026, the annual strategy workshop of the BMFTR’s “Research Campus” funding initiative took place in the MODAL rooms at FUHUB. Under the guidance of PtJ, representatives from the participating research campi engaged in in-depth discussions about the prospects for sustaining their projects. They presented their individual concepts and visions for transferring their respective flagship clusters into the national and international innovation landscape.

The workshop, along with the subsequent campus tour and presentations of the six MODAL labs, offered numerous opportunities for networking, exchanging experiences, and gaining new inspiration within the research campus community. With fresh ideas and motivating perspectives, the workshop concluded as an inspiring event that actively shapes the future development of this forward-looking innovation concept.

Sebastian Pokutta @spokutta.bsky.social · 11mo ago

SCIP Optimization Suite 10.0 is out 🎉 → Numerically exact solving mode for rational MILPs → 9-20% faster on hard MINLPs → IIS detection for debugging infeasible models → Better symmetry handling ... and many more For full details see: www.pokutta.com/blog/resear... #optimization

SCIP Optimization Suite 10.0: Exact Solving, Better Decompositions, and a More Productive Ecosystem

TL;DR: SCIP Optimization Suite 10.0 brings a numerically exact solving mode for rational MILPs, noticeable performance gains for MILP/MINLP, stronger presolving and symmetry handling, better heuristics and conflict analysis, IIS detection, and major updates to GCG, PaPILO, PySCIPOpt, and MIP-DD.

pokutta.com

Computational Nano Optics @cnoatzib.bsky.social · 10mo ago

All-TMDC nanobeam resonator designs for nanolasers: article published in @physrevb.bsky.social dx.doi.org/10.1103/nxh9... #NumericalOptimization #photonics #numerics @zuseinstitute.bsky.social @felixbinkowski.bsky.social @mathplusberlin.bsky.social @fc-modal.bsky.social

High Purcell enhancement in all-TMDC nanobeam resonator designs with active monolayers for nanolasers

We propose a nanobeam resonator incorporating an active monolayer, designed to achieve a high Purcell enhancement. The resonator is fully composed of transition-metal-dichalcogenide materials and inte...

dx.doi.org

Research Campus MODAL @fc-modal.bsky.social · 11mo ago

The #SCIP Optimization Suite 10.0.0 has been released! Many new features, including exact MILP solving. Release report: optimization-online.org/2025/11/the-... Download this new major release at www.scipopt.org #Optimization mixed integer programming #MIP mixed integer nonlinear programming #MINLP

By default, SCIP comes with a bouquet of different plugins for solving MIPs and MINLPs. SCIP is currently one of the fastest non-commercial solvers for mixed integer programming (MIP) and mixed integer nonlinear programming (MINLP).
If you are new to SCIP, want to dive in and don't know where to begin, then have a look at the documentation at https://www.scipopt.org

Computational Nano Optics @cnoatzib.bsky.social · 11mo ago

Physics-informed Bayesian optimization of expensive-to-evaluate black-box functions - just accepted in @ioppublishing.bsky.social MACHINE LEARNING SCIENCE AND TECHNOLOGY dx.doi.org/10.1088/2632... @jcmwave.bsky.social, @zuseinstitute.bsky.social @mathplusberlin.bsky.social @fc-modal.bsky.social‬

Physics-informed Bayesian optimization of expensive-to-evaluate black-box functions - IOPscience

Physics-informed Bayesian optimization of expensive-to-evaluate black-box functions, Sekulic, Ivan, Schaible, Jonas, Müller, Gabriel, Plock, Matthias, Burger, Sven, Martínez-Lahuerta, Víctor José, Gaa...

dx.doi.org

Research Campus MODAL @fc-modal.bsky.social · 11mo ago

Prof Tim Conrad on Mathematical Algorithms for Health Care Applications: Article (in German) @ WISTA-Magazin www.wista.de/aktuelles/ne... . Focus on mathematical methods for the analysis of large amounts of biomedical data at @zuseinstitute.bsky.social and within Research Campus MODAL #BMFTR #FUHUB

wista.de

Research Campus MODAL @fc-modal.bsky.social · 11mo ago

General assembly of Forschungscampus MODAL at #FUHUB Inspiring ideas, lively discussions, and shared visions. Thank you to all participants, both on-site and online, for your contributions and commitment! We look forward to the next steps—working together for practical research and innovation!

General assembly of Forschungscampus MODAL at FUHUB Berlin, November 2025

Research Campus MODAL @fc-modal.bsky.social · last yr.

Luka Stärk and Carolin Scholl win the DISPLIB 2025 Competition for real-time train dispatching! #branch-and-bound algorithm for difficult #scheduling problems. #MODAL #MobilityLab @zuseinstitute.bsky.social @mathplusberlin.bsky.social, @ Internat. Conf. Optim. & Decision Science, Milan 4 Sept 2025.

Luka Stärk and Carolin Scholl win the DISPLIB 2025 Competition for real-time train dispatching. Their custom branch-and-bound algorithm solved the difficult scheduling problems, many of them even to proven optimality. The innovative method has a parameterized complexity of O(4^k poly(n)), where k is the number of conflicts and n is the number of operations. The international competition was held in two phases, with problem instances published in October 2024 and February 2025, respectively. The winners were announced at the International Conference on Optimization and Decision Science (ODS 2025), which took place from September 1 to 4 in Milan. Luka Stärk will be researching train dispatching in the MobilityLab at the MODAL research campus starting in November. The photo shows Luka Stärk receiving the award, with the chairs of the Scientific and Organizing Committees of the Competition, Giorgio Sartor and Bjørnar Luteberget, on his left and right, respectively. Congratulations to Carolin and Luka!

Research Campus MODAL @fc-modal.bsky.social · last yr.

16 Sept 2025, HTW Berlin: „Mathematical Optimization for the Energy Transition“ & „Introduction to Methods of Explainable AI" #XAI Workshop Wirtschaftsmathematik meets Informatics at HTW with MODAL contributions by Janina Zittel and Ambros Gleixner fg-ibbb.gi.de/veranstaltun...

Detail - FG IBBB

fg-ibbb.gi.de

Research Campus MODAL @fc-modal.bsky.social · last yr.

MODAL - Smart Solutions for the Digital Society - BMFTR, German Federal Ministry of Research, Technology, and Space highlights MODAL's third funding period: www.forschungscampus.bmbf.de/aktuelles/st...

Dr. Ina Czyborra, Senatorin für Wissenschaft, Gesundheit und Pflege des Landes Berlin, Prof. Dr. Günter Ziegler, Präsident der Freien Universität Berlin, Dr. Karsten Hess, Referatsleiter Universum und Materie im BMFTR, Bundesministerium für Forschung, Technologie und Raumfahrt at the opening of MODAL's third funding period,
@freieuniversitaet.bsky.social
@gmziegler.bsky.social‬
@zuseinstitute.bsky.social
@mathplusberlin.bsky.social
@senbjf.bsky.social‬
( c ) ZIB

Research Campus MODAL @fc-modal.bsky.social · last yr.

Martin Hammerschmidt, CEO @JCMwave.bsky.social, presents MODAL-#NanoLab results at the 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2025, Malaga, Spain, 23 July 2025. #MachineLearning #BayesianOptimization @cnoatzib.bsky.social‬, Inv Talk in Session 2A10.

Image: M.H. at META2025, Malaga,
upcoming presentation: "Physics Informed Bayesian Optimization For Efficient Solution Of Inverse Problems In Nanophotonics"
Abstract: We introduce physics-informed multi-channel Bayesian optimization for inverse design problems in nanophotonics and nanometrology. By learning vector-valued physical properties of numerically simulated systems, from which the final cost is constructed, our approach achieves faster convergence compared to other optimization methods, enhancing efficiency in solving inverse problems across engineering and physics.

Zuse Institute Berlin @zuseinstitute.bsky.social · last yr.

Enrico Bortoletto successfully defended his PhD dissertation “Geometric Advances and Infrastructure Awareness in Periodic Timetabling” at the Institute of Mathematics at Freie Universität Berlin on July 14, 2025, @zuseinstitute.bsky.social @mathplusberlin.bsky.social @fc-modal.bsky.social‬

$Enrico Bortoletto introduced two novel geometric perspectives on the periodic event scheduling problem, that was hitherto studied in terms of periodic tensions. In the periodic timetabling space, the set of feasible solutions turns out to be a collection of polytropes, i.e., tropical polytopes that are also polytopes in the Euclidean sense. These polytropes have a neighborhood structure that arises from flips in periodic tensions, and that in turn gives rise to a new tropical neighborhood search algorithm. This method effectively complements existing methods and fueled the discovery of new best solutions to five of the twenty-two instances of the PESPLIB, a collection notoriously difficult benchmark testset for periodic timetabling. In the cycle offset space, the fractional solutions produce a cographic zonotope feature a fine tiling, in which the maximal tiles correspond in a duality relation with the feasible timetables. Furthermore, the volume of the cographic zonotope equals the number of spanning trees, and a scaled version provides a lower bound for the width of a cycle basis, two result that are interesting in their own right. Cycles are also the key to deal with constraints on the occupation of infrastructure elements that ensure, e.g., that at any time only one train is scheduled to be at any platform; these inability to deal with such constraints has been a major problem in practical applications, in particular, in the timetabling for construction sites. By a canonical extension of the standard periodic timetabling formulation, such constraints can now be dealt with efficiently, as the thesis demonstrates at the example of scenarios at the S-Bahn Berlin. Photo (l to r) P. Schiewe, C Haase, E Bortoletto, R Borndörfer, A Freyer. https://www.zib.de/research/projects/modal-mobilitylab https://www.zib.de/research/projects/algebraic-and-tropical-methods-periodic-timetabling https://mathplus.de/research-2/application-areas/aa3-next-generation-networks/aa3-8/$

JCMwave @jcmwave.bsky.social · last yr.

Solar TAP Online Workshop on Digital Twins for Emerging #Photovoltaics, 30.06.-01.07.2025: solartap.de/events/ features a session on Optical Simulations with #JCMsuite by #JCMwave #SolarTAP @fc-modal.bsky.social‬ @kit.edu‬ @crockstuhl.bsky.social

Image: Solar TAP Online Workshop on Digital Twins for Emerging Photovoltaics, https://solartap.de/events/solar-tap-online-workshop-on-digital-twins-for-emerging-photovoltaics/

Research Campus MODAL @fc-modal.bsky.social · last yr.

Opening of MODAL / Phase3 on 16 June 2025 & Inauguration party of new #FUHUB labs and offices at #FUBIC @zuseinstitute.bsky.social @freieuniversitaet.bsky.social @mathplusberlin.bsky.social @htwberlin.bsky.social‬

Zuse Institute Berlin @zuseinstitute.bsky.social · last yr.

ZIB team of Gioni Mexi and Coauthors wins the Land-Doig MIP Competition at #mip2025 @fc-modal.bsky.social‬ @mathplusberlin.bsky.social www.zib.de/news/team-wi...

Gioni Mexi, Deborah Hendrych, Sébastien Designolle, Mathieu Besançon, and Sebastian Pokutta were awarded the Land-Doig Competition Prize 2025 at the Mixed-Integer Programming Workshop 2025 for the best contribution to the heuristic solution of Mixed-Integer Quadratic Optimization Problems (MIQP and MIQCQP).

The competition focused on the development of innovative primal heuristics that can quickly generate high-quality feasible solutions. The awarded contribution extended Boscia.jl - developed at the Zuse Institute Berlin - with novel Frank-Wolfe-based large neighborhood search heuristics, as well as gradient- and decomposition-based heuristics, specifically designed for quadratic optimization problems.

The method found feasible solutions for 88 out of 95 benchmark instances, on average in just 12.8 seconds, and achieved a mean optimality gap of 5.1%. In addition, it improved eight best-known solutions in the QPLIB benchmark library.

The photo shows, from left to right: Jan Kronqvist, Assistant Professor at KTH Royal Institute of Technology in Stockholm and member of the competition's organizing team, and Gioni Mexi.

Computational Nano Optics @cnoatzib.bsky.social · last yr.

@spie.org‬ Digital Optical Technologies 2025 #LaserMunich: Visit Talk by Ivan Sekulic on Physics informed Bayesian optimization for inverse design of diffractive optical elements! @jcmwave.bsky.social @zuseinstitute.bsky.social @fc-modal.bsky.social‬ #NumericalOptimization #Photonics

Research Campus MODAL @fc-modal.bsky.social · last yr.

Google DeepMind’s #AlphaEvolve recently set records on 13 notoriously difficult math problems. At MODAL we were curious: Could we tackle those with mathematical optimization instead of AI heuristics? Read the FICO blog to learn how we improved on DeepMind’s results: www.fico.com/blogs/best-g...

Research Campus MODAL @fc-modal.bsky.social · last yr.

MODALs new industrial partner Stryker Berlin GmbH visited MODAL at ZIB together with their Freiburg colleagues from Stryker Leibinger GmbH & Co KG, Patient Specific Solutions. Research in #Medicine #LifeSciences #3Dvisualizations.

Research Campus MODAL @fc-modal.bsky.social · last yr.

The opening of Phase 3 of the MODAL research campus will take place on June 16, 2025 at the FUHUB in Berlin.

Research Campus MODAL @fc-modal.bsky.social · last yr.

MODAL is a partnership project of research partners @zuseinstitute.bsky.social & @freieuniversitaet.bsky.social‬ with >30 industrial partners, funded by the Federal Ministry of Research, Technology and Space within the “Research Campus – Public-Private Partnership for Innovation” funding initiative.