The parameterized complexity of network microaggregation

V Blažej, R Ganian, D Knop, J Pokorný… - Proceedings of the …, 2023 - ojs.aaai.org
Microaggregation is a classical statistical disclosure control technique which requires the
input data to be partitioned into clusters while adhering to specified size constraints. We …

New complexity-theoretic frontiers of tractability for neural network training

C Brand, R Ganian, M Rocton - Advances in Neural …, 2024 - proceedings.neurips.cc
In spite of the fundamental role of neural networks in contemporary machine learning
research, our understanding of the computational complexity of optimally training neural …

[HTML][HTML] The complexity of optimizing atomic congestion

C Brand, R Ganian, S Kalyanasundaram… - Artificial Intelligence, 2025 - Elsevier
Atomic congestion games are a classic topic in network design, routing, and algorithmic
game theory, and are capable of modeling congestion and flow optimization tasks in various …

The Boundaries of Tractability in Hierarchical Task Network Planning

C Brand, R Ganian, FM Inerney… - arxiv preprint arxiv …, 2024 - arxiv.org
We study the complexity-theoretic boundaries of tractability for three classical problems in
the context of Hierarchical Task Network Planning: the validation of a provided plan, whether …

The computational complexity of concise hypersphere classification

E Eiben, R Ganian, IA Kanj… - International …, 2023 - proceedings.mlr.press
Hypersphere classification is a classical and foundational method that can provide easy-to-
process explanations for the classification of real-valued as well as binary data. However …

The Parameterized Complexity Landscape of the Unsplittable Flow Problem

R Ganian, M Rocton, D Unterberger - International Workshop on Graph …, 2024 - Springer
We study the well-established problem of finding an optimal routing of unsplittable flows in a
graph. While by now there is an extensive body of work targeting the problem on graph …

From Data Completion to Problems on Hypercubes: A Parameterized Analysis of the Independent Set Problem

E Eiben, R Ganian, I Kanj, S Ordyniak… - arxiv preprint arxiv …, 2024 - arxiv.org
Several works have recently investigated the parameterized complexity of data completion
problems, motivated by their applications in machine learning, and clustering in particular …