Induced-minor-free graphs: Separator theorem, subexponential algorithms, and improved hardness of recognition

T Korhonen, D Lokshtanov - Proceedings of the 2024 Annual ACM-SIAM …, 2024 - SIAM
A graph G contains a graph H as an induced minor if H can be obtained from G by vertex
deletions and edge contractions. The class of H-induced-minor-free graphs generalizes the …

Conditional lower bounds for sparse parameterized 2-CSP: A streamlined proof

K CS, D Marx, M Pilipczuk, U Souza - 2024 Symposium on Simplicity in …, 2024 - SIAM
Abstract Assuming the Exponential Time Hypothesis (ETH), a result of Marx (ToC'10) implies
that there is no time algorithm that can solve 2-CSPs with k constraints (over a domain of …

Fixed-Parameter Tractability of Hedge Cut

FV Fomin, PA Golovach, T Korhonen… - Proceedings of the 2025 …, 2025 - SIAM
Abstract In the Hedge Cut problem, the edges of a graph are partitioned into groups called
hedges, and the question is what is the minimum number of hedges to delete to disconnect …

[PDF][PDF] Efficient Algorithms and New Characterizations for CSP Sparsification

S Khanna, AL Putterman, M Sudan - arxiv preprint arxiv:2404.06327, 2024 - cis.upenn.edu
CSP sparsification, introduced by Kogan and Krauthgamer (ITCS 2015), considers the
following question: how much can an instance of a constraint satisfaction problem be …

Parks and Recreation: Color Fault-Tolerant Spanners Made Local

M Parter, A Petruschka, S Sapir, E Tzalik - … of the 2025 Annual ACM-SIAM …, 2025 - SIAM
We provide new algorithms for constructing spanners of arbitrarily edge-or vertex-colored
graphs, that can endure up to f failures of entire color classes. The failure of even a single …

Solving the minimum labeling global cut problem by mathematical programming

VJS Koehler, T Gouveia, GF Sousa Filho… - International …, 2024 - Wiley Online Library
An edge‐labeled graph (ELG) G=(V, E, L) G=(V,E,L) is a graph such that VV is the set of
vertices, EE is the set of edges, LL is the set of labels (colors), and each edge e∈ E e∈E …

Shortest cycles with monotone submodular costs

FV Fomin, PA Golovach, T Korhonen… - ACM Transactions on …, 2023 - dl.acm.org
We introduce the following submodular generalization of the Shortest Cycle problem. For a
nonnegative monotone submodular cost function f defined on the edges (or the vertices) of …

Combining Capacity and Length: Finding Connectivity Bottleneck in a Layered Network

P Zhang - IEEE/ACM Transactions on Networking, 2024 - ieeexplore.ieee.org
Computer networks are often multi-layered. For simplicity, let us focus on two-layered
networks with logical layer and physical layer. Such a network can be modeled as a labeled …

Conditional lower bounds for sparse parameterized 2-CSP: A streamlined proof

D Marx, M Pilipczuk, U Souza - arxiv preprint arxiv:2311.05913, 2023 - arxiv.org
Assuming the Exponential Time Hypothesis (ETH), a result of Marx (ToC'10) implies that
there is no $ f (k)\cdot n^{o (k/\log k)} $ time algorithm that can solve 2-CSPs with $ k …

Combining Capacity and Length: An Approximation Algorithm for the Weighted Label ST Cut Problem

P Zhang - Available at SSRN 4369634 - papers.ssrn.com
In the weighted minimum Label st Cut problem, we are given a (directed or undirected)
graph G=(V, E), a label set L={1,2,...,q} with positive label weights {w}, a source s∈ V and a …