Stepan Artamonov

dblp:117/5873 · DBLP profile ↗
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5ranked-venue papers
3as first author
2since 2021 · last 2024
—ORCID · none

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Theory of computation · 5 · 3 first-author · 2 since 2021
YearPublicationVenuePosition
2024 Faster Algorithm for Finding Maximum 1-Restricted Simple 2-Matchings
Stepan Artamonov, Maxim A. Babenko
Algorithmica1
2022 Faster Algorithm for Finding Maximum 1-Restricted Simple 2-Matchings
Stepan Artamonov, Maxim A. Babenko
IWOCA1
2017 Faster Algorithms for Half-Integral T-Path Packing
abstract
Let G = (V, E) be an undirected graph, a subset of vertices T be a set of terminals. Then a natural combinatorial problem consists in finding the maximum number of vertex-disjoint paths connecting distinct terminals. For this problem, a clever construction suggested by Gallai reduces it to computing a maximum non-bipartite matching and thus gives an O(mn^1/2 log(n^2/m)/log(n))-time algorithm (hereinafter n := |V|, m := |E|). Now let us consider the fractional relaxation, i.e. allow T-path packings with arbitrary nonnegative real weights. It is known that there always exists a half-integral solution, that is, one only needs to assign weights 0, 1/2, 1 to maximize the total weight of T-paths. It is also known that an optimum half-integral packing can be found in strongly-polynomial time but the actual time bounds are far from being satisfactory. In this paper we present a novel algorithm that solves the half-integral problem within O(mn^1/2 log(n^2/m)/log(n)) time, thus matching the complexities of integral and half-integral versions.
Maxim A. Babenko, Stepan Artamonov
ISAAC2
2015 A Fast Scaling Algorithm for the Weighted Triangle-Free 2-Matching Problem
Stepan Artamonov, Maxim A. Babenko
IWOCA1
2012 An Improved Algorithm for Packing T-Paths in Inner Eulerian Networks
Maxim A. Babenko, Kamil Salikhov, Stepan Artamonov
COCOON3