[HTML][HTML] A survey on approximation in parameterized complexity: Hardness and algorithms

AE Feldmann, E Lee, P Manurangsi - Algorithms, 2020 - mdpi.com
Parameterization and approximation are two popular ways of coping with NP-hard
problems. More recently, the two have also been combined to derive many interesting …

A Note on Max -Vertex Cover: Faster FPT-AS, Smaller Approximate Kernel and Improved Approximation

P Manurangsi - arXiv preprint arXiv:1810.03792, 2018 - arxiv.org
In Maximum $ k $-Vertex Cover (Max $ k $-VC), the input is an edge-weighted graph $ G $
and an integer $ k $, and the goal is to find a subset $ S $ of $ k $ vertices that maximizes …

A Parameterized Approximation Scheme for Min -Cut

D Lokshtanov, S Saurabh, V Surianarayanan - SIAM Journal on Computing, 2022 - SIAM
In the Min k-Cut problem, the input consists of an edge weighted graph G and an integer k,
and the task is to partition the vertex set into k nonempty sets, such that the total weight of the …

FPT-approximation for FPT problems

D Lokshtanov, P Misra, MS Ramanujan… - Proceedings of the 2021 …, 2021 - SIAM
Over the past decade, many results have focused on the design of parameterized
approximation algorithms for W [1]-hard problems. However, there are fundamental …

Hypergraph k-cut in randomized polynomial time

K Chandrasekaran, C Xu, X Yu - Mathematical Programming, 2021 - Springer
For a fixed integer k ≥ 2 k≥ 2, the hypergraph k-cut problem asks for a smallest subset of
hyperedges whose removal leads to at least k connected components in the remaining …

LP Relaxation and Tree Packing for Minimum -Cut

C Chekuri, K Quanrud, C Xu - SIAM Journal on Discrete Mathematics, 2020 - SIAM
Karger used spanning tree packings DR Karger, J. ACM, 47 (2000), pp. 46--76 to derive a
near linear-time randomized algorithm for the global minimum cut problem as well as a …

Maximizing coverage while ensuring fairness: A tale of conflicting objectives

A Asudeh, T Berger-Wolf, B DasGupta, A Sidiropoulos - Algorithmica, 2023 - Springer
Ensuring fairness in computational problems has emerged as a key topic during recent
years, buoyed by considerations for equitable resource distributions and social justice. It is …

The Karger-Stein algorithm is optimal for k-cut

A Gupta, E Lee, J Li - Proceedings of the 52nd Annual ACM SIGACT …, 2020 - dl.acm.org
In the k-cut problem, we are given an edge-weighted graph and want to find the least-weight
set of edges whose deletion breaks the graph into k connected components. Algorithms due …

[PDF][PDF] Parameterized Inapproximability Hypothesis under Exponential Time Hypothesis

V Guruswami, B Lin, X Ren, Y Sun, K Wu - Proceedings of the 56th …, 2024 - dl.acm.org
The Parameterized Inapproximability Hypothesis (PIH) asserts that no fixed parameter
tractable (FPT) algorithm can distinguish a satisfiable CSP instance, parameterized by the …

Minimum Cut and Minimum k-Cut in Hypergraphs via Branching Contractions

K Fox, D Panigrahi, F Zhang - Proceedings of the Thirtieth Annual ACM-SIAM …, 2019 - SIAM
On hypergraphs with m hyperedges and n vertices, where p denotes the total size of the
hyperedges, we provide the following results: We give an algorithm that runs in Õ (mn 2 k–2) …