no code implementations • 26 May 2022 • Ümit V. Çatalyürek, Karen D. Devine, Marcelo Fonseca Faraj, Lars Gottesbüren, Tobias Heuer, Henning Meyerhenke, Peter Sanders, Sebastian Schlag, Christian Schulz, Daniel Seemaier, Dorothea Wagner
In recent years, significant advances have been made in the design and evaluation of balanced (hyper)graph partitioning algorithms.
1 code implementation • 20 Oct 2020 • Lars Gottesbüren, Tobias Heuer, Peter Sanders, Sebastian Schlag
With just four cores, Mt-KaHyPar is also slightly faster than the fastest sequential multilevel partitioner PaToH while producing better solutions on 83% of all instances.
Distributed, Parallel, and Cluster Computing
2 code implementations • 26 Mar 2020 • Lars Gottesbüren, Michael Hamann, Sebastian Schlag, Dorothea Wagner
We present an improvement to the flow-based refinement framework of KaHyPar-MF, the current state-of-the-art multilevel $k$-way hypergraph partitioning algorithm for high-quality solutions.
Data Structures and Algorithms
no code implementations • 6 Feb 2020 • Merten Popp, Sebastian Schlag, Christian Schulz, Daniel Seemaier
The acyclic hypergraph partitioning problem is to partition the hypernodes of a directed acyclic hypergraph into a given number of blocks of roughly equal size such that the corresponding quotient graph is acyclic while minimizing an objective function on the partition.
no code implementations • 20 Aug 2018 • Sebastian Schlag, Matthias Schmitt, Christian Schulz
The time complexity of support vector machines (SVMs) prohibits training on huge data sets with millions of data points.
2 code implementations • SEA 2018 2018 • Tobias Heuer, Peter Sanders, Sebastian Schlag
We present a refinement framework for multilevel hypergraph partitioning that uses max-flow computations on pairs of blocks to improve the solution quality of a $k$-way partition.
Data Structures and Algorithms G.2.2; G.2.3
2 code implementations • GECCO 2018 2018 • Robin Andre, Sebastian Schlag, Christian Schulz
Hypergraph partitioning has a wide range of important applications such as VLSI design or scientific computing.
Data Structures and Algorithms
no code implementations • ALENEX 2017 2017 • Yaroslav Akhremtsev, Tobias Heuer, Peter Sanders, Sebastian Schlag
We also remove several further bottlenecks in processing large hyperedges, develop a faster contraction algorithm, and a new adaptive stopping rule for local search.
1 code implementation • SEA 2017 2017 • Tobias Heuer, Sebastian Schlag
We present an improved coarsening process for multilevel hypergraph partitioning that incorporates global information about the community structure.
1 code implementation • ALENEX 2016 2017 • Sebastian Schlag, Vitali Henne, Tobias Heuer, Henning Meyerhenke, Peter Sanders, Christian Schulz
We develop a multilevel algorithm for hypergraph partitioning that contracts the vertices one at a time.
Data Structures and Algorithms
1 code implementation • 4 May 2015 • Vitali Henne, Henning Meyerhenke, Peter Sanders, Sebastian Schlag, Christian Schulz
Using label propagation local search is several times faster than hMetis and gives better quality than PaToH for a VLSI benchmark set.
Data Structures and Algorithms G.2.2; D.1.4