2024
Characterization of Matrices with Bounded Graver Bases and Depth Parameters and Applications to Integer Programming
BRIAŃSKI, Marcin; Martin KOUTECKÝ; Daniel KRÁĽ; Kristýna PEKÁRKOVÁ; Felix SCHRÖDER et. al.Basic information
Original name
Characterization of Matrices with Bounded Graver Bases and Depth Parameters and Applications to Integer Programming
Authors
BRIAŃSKI, Marcin (616 Poland); Martin KOUTECKÝ (203 Czech Republic); Daniel KRÁĽ (203 Czech Republic, belonging to the institution); Kristýna PEKÁRKOVÁ (203 Czech Republic, belonging to the institution) and Felix SCHRÖDER (276 Germany)
Edition
MATHEMATICAL PROGRAMMING, Berlin, Germany, SPRINGER HEIDELBERG, 2024, 0025-5610
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
10201 Computer sciences, information science, bioinformatics
Country of publisher
Germany
Confidentiality degree
is not subject to a state or trade secret
References:
Impact factor
Impact factor: 2.500
RIV identification code
RIV/00216224:14330/24:00137365
Organization unit
Faculty of Informatics
UT WoS
001145544400002
EID Scopus
2-s2.0-85182671269
Keywords in English
Integer programming; width parameters; matroids; Graver basis; tree-depth; fixed-parameter tractability
Tags
International impact, Reviewed
Changed: 4/4/2025 13:04, RNDr. Pavel Šmerk, Ph.D.
Abstract
In the original language
An intensive line of research on fixed parameter tractability of integer programming is focused on exploiting the relation between the sparsity of a constraint matrix A and the norm of the elements of its Graver basis. In particular, integer programming is fixed parameter tractable when parameterized by the primal tree-depth and the entry complexity of A, and when parameterized by the dual tree-depth and the entry complexity of A; both these parameterization imply that A is sparse, in particular, the number of its non-zero entries is linear in the number of columns or rows, respectively. We study preconditioners transforming a given matrix to a row-equivalent sparse matrix if it exists and provide structural results characterizing the existence of a sparse row-equivalent matrix in terms of the structural properties of the associated column matroid. In particular, our results imply that the l_1-norm of the Graver basis is bounded by a function of the maximum l_1-norm of a circuit of A. We use our results to design a parameterized algorithm that constructs a matrix row-equivalent to an input matrix A that has small primal/dual tree-depth and entry complexity if such a row-equivalent matrix exists. Our results yield parameterized algorithms for integer programming when parameterized by the l_1-norm of the Graver basis of the constraint matrix, when parameterized by the l_1-norm of the circuits of the constraint matrix, when parameterized by the smallest primal tree-depth and entry complexity of a matrix row-equivalent to the constraint matrix, and when parameterized by the smallest dual tree-depth and entry complexity of a matrix row-equivalent to the constraint matrix.
Links
MUNI/A/1592/2023, interní kód MU |
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MUNI/I/1677/2018, interní kód MU |
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