Sebastian Schlag Sebastian Schlag

Dr. rer. nat. Sebastian Schlag

Activities

In April 2020, I started working at Apple.

Research Interests

  • Graph and Hypergraph Partitioning
  • Communication Efficient Algorithms
  • Distributed Processing of Large Data

Publications


Research Data
kahypar/mt-kahypar: v1.1
Gottesbüren, L.; Heuer, T.; Maas, N.; Wahl, N.; Grabowski, S.; Schlag, S.; Seemaier, D.; Hydai
2023. doi:10.5281/zenodo.7554854ShareExport/share the publication
kahypar/mt-kahypar: v1.2
Heuer, T.; Gottesbüren, L.; Maas, N.; Wahl, N.; Grabowski, S.; Schlag, S.; Seemaier, D.; Hydai
2023. doi:10.5281/zenodo.7816970ShareExport/share the publication
kahypar/mt-kahypar: v1.3
Heuer, T.; Gottesbüren, L.; Maas, N.; Wahl, N.; Grabowski, S.; Schlag, S.; Seemaier, D.; Hydai
2023. doi:10.5281/zenodo.8178577ShareExport/share the publication
kahypar/mt-kahypar: v1.3.1
Heuer, T.; Gottesbüren, L.; Maas, N.; Wahl, N.; Grabowski, S.; Schlag, S.; Seemaier, D.; Hydai
2023. doi:10.5281/zenodo.8199977ShareExport/share the publication
kahypar/mt-kahypar: v1.3.2
Heuer, T.; Gottesbüren, L.; Maas, N.; Wahl, N.; Grabowski, S.; Schlag, S.; Seemaier, D.; Hydai
2023. doi:10.5281/zenodo.8239347ShareExport/share the publication
Conference Papers
Shared-Memory n-level Hypergraph Partitioning
Gottesbüren, L.; Heuer, T.; Sanders, P.; Schlag, S.
2022. 2022 Proceedings of the Symposium on Algorithm Engineering and Experiments (ALENEX). Ed.: C. Phillips, Meeting on Algorithm Engineering and Experiments (ALENEX 2022 2022) Online, 09.01.2022–10.01.2022, 131–144, Society for Industrial and Applied Mathematics (SIAM). doi:10.1137/1.9781611977042.11ShareExport/share the publication
Multilevel Hypergraph Partitioning with Vertex Weights Revisited
Heuer, T.; Maas, N.; Schlag, S.
2021. 19th International Symposium on Experimental Algorithms (SEA 2021), 8:1–8:20, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (LZI). doi:10.4230/LIPIcs.SEA.2021.8Full textFull text of the publication as PDF documentShareExport/share the publication
Multilevel acyclic hypergraph partitioning
Popp, M.; Schlag, S.; Schulz, C.; Seemaier, D.
2021. 2021 Proceedings of the Symposium on Algorithm Engineering and Experiments (ALENEX). Ed.: M. Farach-Colton, Society for Industrial and Applied Mathematics (SIAM) ShareExport/share the publication
Scalable Shared-Memory Hypergraph Partitioning
Gottesbüren, L.; Heuer, T.; Sanders, P.; Schlag, S.
2021. ALENEX 2021 : SIAM Symposium on Algorithm Engineering and Experiments. Ed.: M. Farach-Colton, 16–30, Society for Industrial and Applied Mathematics (SIAM). doi:10.1137/1.9781611976472.2ShareExport/share the publication
Advanced Flow-Based Multilevel Hypergraph Partitioning
Gottesbüren, L.; Hamann, M.; Schlag, S.; Wagner, D.
2020. 18th International Symposium on Experimental Algorithms (SEA 2020) Hrsg.: Faro, Simone; Cantone, Domenico, 11:1–11:15, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (LZI). doi:10.4230/LIPIcs.SEA.2020.11ShareExport/share the publication
Data Distribution for Phylogenetic Inference with Site Repeats via Judicious Hypergraph Partitioning
Baar, I.; Hübner, L.; Oettig, P.; Zapletal, A.; Schlag, S.; Stamatakis, A.; Morel, B.
2019. IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW), Rio de Janeiro, Brazil, Brazil, 20-24 May 2019, 175–184, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/IPDPSW.2019.00038ShareExport/share the publication
Scalable Edge Partitioning
Schlag, S.; Schulz, C.; Seemaier, D.; Strash, D.
2019. Proceedings of the 21st Workshop on Algorithm Engineering and Experiments (ALENEX 2019), San Diego, CA, January 7-8, 2019, 211–225. doi:10.1137/1.9781611975499.17ShareExport/share the publication
Faster Support Vector Machines
Schlag, S.; Schmitt, M.; Schulz, C.
2019. 2019 Proceedings of the Twenty-First Workshop on Algorithm Engineering and Experiments (ALENEX). Ed.: S. Kobourov, 199–210, Society for Industrial and Applied Mathematics (SIAM). doi:10.1137/1.9781611975499.16ShareExport/share the publication
Network Flow-Based Refinement for Multilevel Hypergraph Partitioning
Heuer, T.; Sanders, P.; Schlag, S.
2018. 17th International Symposium on Experimental Algorithms (SEA), June 27-29, 2018, L’Aquila, Italy. Ed.: G. D’Angelo, 1:1–1:19, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (LZI). doi:10.4230/LIPIcs.SEA.2018.1ShareExport/share the publication
Memetic multilevel hypergraph partitioning
Andre, R.; Schlag, S.; Schulz, C.
2018. GECCO ’18 Proceedings of the Genetic and Evolutionary Computation Conference, Kyoto, J, July 15-19, 2018, 347–354, Association for Computing Machinery (ACM). doi:10.1145/3205455.3205475ShareExport/share the publication
Improving Coarsening Schemes for Hypergraph Partitioning by Exploiting Community Structure
Heuer, T.; Schlag, S.
2017. 16th International Symposium on Experimental Algorithms (SEA 2017), London, UK, 21th - 23rd June 2017. Ed.: C. Iliopoulos, Art. Nr. 21, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (LZI). doi:10.4230/LIPIcs.SEA.2017.21ShareExport/share the publication
Engineering a direct k-way hypergraph partitioning algorithm
Akhremtsev, Y.; Heuer, T.; Sanders, P.; Schlag, S.
2017. Proceedings of the Ninteenth Workshop on Algorithm Engineering and Experiments (ALENEX), Barcelona, E, January 17-18, 2017. Ed.: S. Fekete, 28–42, SIAM Publ. doi:10.1137/1.9781611974768.3ShareExport/share the publication
Thrill: High-performance algorithmic distributed batch data processing with C++
Bingmann, T.; Axtmann, M.; Jobstl, E.; Lamm, S.; Nguyen, H. C.; Noe, A.; Schlag, S.; Stumpp, M.; Sturm, T.; Sanders, P.
2016. IEEE International Conference on Big Data (Big Data), Washington DC, USA, 5–8 December 2016, 172–183, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/BigData.2016.7840603Full textFull text of the publication as PDF documentShareExport/share the publication
K-way hypergraph partitioning via n-level recursive bisection
Schlag, S.; Henne, V.; Heuer, T.; Meyerhenke, H.; Sanders, P.; Schulz, C.
2016. Proceedings of the 18th Workshop on Algorithm Engineering and Experiments 2016, ALENEX 2016, Arlington, United States. Ed.: M. Goodrich, 53–67. doi:10.1137/1.9781611974317.5ShareExport/share the publication
Communication efficient algorithms for fundamental big data problems
Sanders, P.; Schlag, S.; Muller, I.
2013. Proceedings of the 2013 IEEE International Conference on Big Data, Santa Clara, CA, October 6-9, 2013, 15–23, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/BigData.2013.6691549ShareExport/share the publication
Journal Articles
Scalable High-Quality Hypergraph Partitioning
Gottesbüren, L.; Heuer, T.; Maas, N.; Sanders, P.; Schlag, S.
2024. ACM Transactions on Algorithms, 20 (1), 1–54. doi:10.1145/3626527ShareExport/share the publication
More Recent Advances in (Hyper)Graph Partitioning
Çatalyürek, Ü.; Devine, K.; Faraj, M.; Gottesbüren, L.; Heuer, T.; Meyerhenke, H.; Sanders, P.; Schlag, S.; Schulz, C.; Seemaier, D.; Wagner, D.
2023. ACM Computing Surveys, 55 (12), Artkl.Nr.: 3571808. doi:10.1145/3571808ShareExport/share the publication
High-Quality Hypergraph Partitioning
Schlag, S.; Heuer, T.; Gottesbüren, L.; Akhremtsev, Y.; Schulz, C.; Sanders, P.
2022. ACM Journal of Experimental Algorithmics, 27, Art.Nr. 1.9. doi:10.1145/3529090ShareExport/share the publication
Faster Support Vector Machines
Schlag, S.; Schmitt, M.; Schulz, C.
2021. Journal of experimental algorithmics, 26, 1–21. doi:10.1145/3484730ShareExport/share the publication
Network Flow-Based Refinement for Multilevel Hypergraph Partitioning
Heuer, T.; Sanders, P.; Schlag, S.
2019. Journal of experimental algorithmics, 24 (1), Article: 2.3. doi:10.1145/3329872ShareExport/share the publication
Master's Theses
PhD Theses
High-Quality Hypergraph Partitioning. PhD dissertation
Schlag, S.
2020, February 26. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000105953Full textFull text of the publication as PDF documentShareExport/share the publication
Book Chapters
KaHIP - Karlsruhe High Quality Partitioning
Akhremtsev, Y.; Sanders, P.; Schlag, S.; Schulz, C.
2014. Large-Scale Data Management and Analysis (LSDMA) - Big Data in Science. Hrsg.: Ch. Jung, 8, Karlsruher Institut für Technologie (KIT) ShareExport/share the publication
Presentations
Title Conference Date

Dissertation Defense

11.12.2019

ICIAM'19

July 2019

Algorithms II

January 2019

ALENEX'19

January 2019

Annual SPP Meeting 2018

September 2018

GECCO'18

July 2018

SEA'18

June 2018

Bioinformatics Programming Practical

April 2018

Scientific Review: Research Field Key Technologies - Information

December 2017

The German-Israeli Workshop / Winter School on Algorithms for Big Data

November 2017

SPP 1736 Big Data

October 2017

BDAHM

October 2017

KSETA Topical Course

September 2017

SEA'17

June 2017

GP Workshop

24.02.2017

ALENEX'17

January 2017

ALENEX'16

January 2016

Teaching

Open Theses
Supervised Theses
Title Subject Supervisor Student
Hypergraph Partitioning

Christian Schulz, Peter Sanders, Sebastian Schlag

Daniel Seemaier

Hypergraph Partitioning

Peter Sanders, Sebastian Schlag, Christian Schulz

Clemens Öhl

Graph Partitioning

Peter Sanders, Sebastian Schlag, Christian Schulz

Yani Kolev

Hypergraph Partitioning

Peter Sanders, Sebastian Schlag, Christian Schulz

Charel Mercatoris

Graph Partitioning

Christian Schulz, Peter Sanders, Sebastian Schlag

Tobias Ribizel

Graph Partitioning

Peter Sanders, Sebastian Schlag, Christian Schulz

Daniel Seemaier

Hypergraph Partitioning

Peter Sanders, Sebastian Schlag

Tobias Heuer

Hypergraph Partitioning

Peter Sanders, Sebastian Schlag, Christian Schulz

Robin Andre

Hypergraph Partitioning

Peter Sanders, Sebastian Schlag

Tobias Heuer

Hypergraph Partitioning

Henning Meyerhenke, Peter Sanders, Sebastian Schlag, Christian Schulz

Vitali Henne

Hypergraph Partitioning

Peter Sanders, Sebastian Schlag

Orlin Kolev

SVMs

Peter Sanders, Sebastian Schlag, Christian Schulz

Matthias Schmitt

Database Optimization

Sebastian Schlag
Tobias Heuer

Patrick Firnkes