Zuse Institute Berlin

@zuseinstitute

Interdisciplinary research institute: applied mathematics & data-intensive high-performance computing

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Zuse Institute Berlin@zuseinstitute· May 13

Long Night of Sciences at ZIB www.zib.de/lndw 06 June 2026 #LangeNachtDerWissenschaften

Zuse Institute Berlin@zuseinstitute· Aug 7

#MasterThesis opportunity "3D Shape Completion for Individualized Implant Design" @ ZIB research group "Computational Diagnosis and Therapy Planning" #MedicalImaging #3DReconstruction #DeepLearning #NumericalMathematics www.zib.de/thesis/3d-sh...

Zuse Institute Berlin@zuseinstitute· Jul 21

KOBV @kobv-zt.openbiblio.social.ap.brid.gy‬ at ZIB receives new funding agreement Sarah Wedl-Wilson (Berlin Senator for Culture and Social Cohesion), Dr Ina Czyborra (Berlin Senator for Science, Care and Health) & Manja Schüle (Brandenburg Minister for Science, Research &Culture) sign the agreement.

With the signatures of Sarah Wedl-Wilson (Berlin Senator for Culture and Social Cohesion), Dr Ina Czyborra (Berlin Senator for Science, Care and Health) and Manja Schüle (Brandenburg Minister for Science, Research and Culture), the two federal states are once again committing themselves to the Cooperative Library Network Berlin-Brandenburg
(KOBV) and its network headquarters at the Zuse Institute Berlin.
The new agreement simplifies the financing of the centre and clarifies its future tasks. In addition to basic library services, these also include research and the handling of consortium negotiations.

See also the press release: https://www.berlin.de/sen/kultgz/aktuelles/pressemitteilungen/2025/pressemitteilung.1580050.php

The image shows the extended KOBV team at ZIB.

Zuse Institute Berlin@zuseinstitute· Jul 21

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

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

Zuse Institute Berlin@zuseinstitute· Jul 9

Summer party and BBQ at ZIB on yesterday's perfect summer evening! Thanks a lot to all organizers and helping hands!

Zuse Institute Berlin@zuseinstitute· Jun 21

Inauguration party for new office spaces at #FUHUB #FUBIC, Fabeckstraße! Concurrently with the Opening of @fc-modal.bsky.social‬ / Phase3 on 16 June 2025! Speeches by I Czyborra, Senator for Research, K Hess of BMFTR, @gmziegler.bsky.social‬ president of @freieuniversitaet.bsky.social, and others

Zuse Institute Berlin@zuseinstitute· Jun 19

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.

Zuse Institute Berlin@zuseinstitute· Jun 11

Long Night of Sciences - Lange Nacht der Wissenschaften 28 June 2025 - at Zuse Institute Berlin. Check out the ZIB #LNDW2025 program including more than 25 presentation events! www.zib.de/lndw #LangeNachtDerWissenschaften

Flyer for Long Night of Sciences 2025 at ZIB, 28 June 2025

Zuse Institute Berlin@zuseinstitute· Jun 11

AI4Forest: Advancing AI-Driven Forest Monitoring, International workshop on #ForestMonitoring & #ClimateResearch at ZIB. #DataProcessing #SatelliteImages. Preparations for #AI4Forest Conference and Summer school, 8-12 Sept 2025 ai4forest-conference.zib.de

Participants at the AI4Forest Workshop at Zuse Institute Berlin, spring 2025

Zuse Institute Berlin@zuseinstitute· Jun 11

Open call for proposals: "Funding Programme for the Digitalisation of Cultural Heritage Objects of the State of Berlin" of the Berlin Senate Department for Culture & Social Cohesion, for 2026. Deadline: 25 July 2025 FAQ: www.digis-berlin.de/foerderprogr... @digisberlin.openbiblio.social.ap.brid.gy‬

Zuse Institute Berlin@zuseinstitute· May 22

Congratulations to MATH+ on the positive result in the 2nd round of the DFG Excellence Strategy! Proud to be part of the MATH+ team! @mathplusberlin.bsky.social @weierstrassinst.bsky.social‬ @humboldtuni.bsky.social‬ @freieuniversitaet.bsky.social‬ @tuberlin.bsky.social‬ @zuseinstitute.bsky.social

Zuse Institute Berlin@zuseinstitute· Jan 30

On June 28, the upcoming Long Night of the Sciences 2025 takes place. Has it been 25 years already?!? Save the Date. We look forward to seeing you!

Zuse Institute Berlin@zuseinstitute· Jan 24

On January 10, 2025, an important working meeting with our partners took place at ZIB, attended in person by Senator for Science, Health, and Care Dr. Ina Czyborra and BVG CEO Dr. Henrik Falk. The focus of the meeting was on exchanging ideas and planning potential future collaborations.

Zuse Institute Berlin@zuseinstitute· Jan 14

What a view! Towards new Challenges in 2025.

Zuse Institute Berlin@zuseinstitute· Dec 17

Wir hoffen ihr hattet einen besinnlichen 3. Advent, lange ist es nicht mehr bis Weihnachten.🎄

Zuse Institute Berlin@zuseinstitute· Dec 2

Wir vom Zib hoffen ihr hattet einen schönen ersten Advent und wünschen euch da draußen eine frohe Weihnachtszeit!

Zuse Institute Berlin@zuseinstitute· Nov 27

Sie bringen fundierte Kenntnisse im Reisekostenrecht mit und können idealerweise mit Erfahrungen im Vergaberecht und in der öffentlichen Verwaltung punkten? Dann schaut auf unser Webseite vorbei und bewerbt euch!

Zuse Institute Berlin@zuseinstitute· Nov 15

Interesse? Schaut auf unser Webseite vorbei und bewerbt euch!

Zuse Institute Berlin@zuseinstitute· Nov 13

Gleich doppelte Glückwünsche im ZIB gab es im Oktober! Britta Weber und Hans-Christian Hege erhalten IEEE VIS Test of Time Award und Hans-Christian Hege erhält seperat den Lifetime Achievement Award 2024 Glückwunsch!

Zuse Institute Berlin@zuseinstitute· Oct 30

Wir suchen einen Kaufmännischen Angestellten (w/m/d), zunächst als Schwangerschafts- und Elternzeitvertretung befristet bis zum 31.12.2025. Im Anschluss wird eine unbefristete Weiterbeschäftigung im Rahmen einer rentenbedingten Nachfolge angestrebt. Schaut vorbei!

Zuse Institute Berlin@zuseinstitute· Oct 11

The summer school CO@Work 2024 took place from Sep 16-27, 2024, at ZIB and was organized jointly by TU, HTW, FU, and ZIB 142 on-site, plus 408 online participants took part in 43 lectures on the latest progress in computational optimization and mathematical programming!

Zuse Institute Berlin@zuseinstitute· Oct 4

Joel Witzke and Florian Schintke from ZIB together with their co-authors received the Best Poster Award at the 20th IEEE International conference on e-Science in Osaka, Japan for their work "I/O of scientific workflows monitored in detail". Congrats!

Zuse Institute Berlin@zuseinstitute· Sep 13

Heute feiert das ZIB sein 40-jähriges Bestehen. Zur Feierstunde erwartet werden zahlreiche Persönlichkeiten aus Wissenschaft und Politik, darunter Wissenschaftssenatorin Dr. Ina Czyborra. Das Thema des Festakts lautet „Zukunft in Berlin“ Wir freuen uns auf euch! 🎉✨ #jubiläum

Zuse Institute Berlin@zuseinstitute· Aug 23

A collaboration between the SynLab of the Research Campus MODAL, ZIB, & i2damo GmbH, introduces the QuBowl solver. This tool marks a significant advancement in solving the MaxCut problem and the equivalent quadratic unconstrained binary optimization (QUBO) problem.

Zuse Institute Berlin@zuseinstitute· Jul 23

This month marks the start of the 8th edition of the Graduate-Level Research in Industrial Projects for Students (G-RIPS) summer program at the Zuse Institute Berlin (ZIB). This year, we are delighted to welcome twelve outstanding international students from the USA & Europe.

Zuse Institute Berlin@zuseinstitute· Jun 4

The recent IO500 lists were announced which rank computer systems by their storage performance. Lise, the HPC system operated by us, and its DAOS storage system achieved rank 3 on the 10 node production list just behind the exascale system Aurora(ANL, USA) & SuperMUC-NG-Phase2!

Zuse Institute Berlin@zuseinstitute· May 24

The 16th Annual Meeting Photonic Devices has been successfully held at ZIB this month. 14 invited talks, 23 contributed talks and 23 postes related to numerical methods, simulation and physical properties of novel photonic devices. Big Thanks to all attendees and organizers!

Zuse Institute Berlin@zuseinstitute· Apr 9

The Kick-off event for the MATH+ Thematic Einstein Semester on "Mathematics for Quantum Technologies" will take place on April 16, 2024, 14:00-18:00 at TU Berlin.

Zuse Institute Berlin@zuseinstitute· Apr 4

From March 2024 on, ZIB joins the collaboration of UniPv and USI, being partner in the ICAM. Dr. Martin Weiser will represent the ZIB in ICAM's scientific committee!

Zuse Institute Berlin@zuseinstitute· Feb 29

Jetzt auch hier zu finden! #science