Search Results - "Marx, Daniel"
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Chordal Editing is Fixed-Parameter Tractable
ISSN: 0178-4617, 1432-0541Published: New York Springer US 01.05.2016Published in Algorithmica (01.05.2016)“…Graph modification problems typically ask for a small set of operations that transforms a given graph to have a certain property. The most commonly considered…”
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2
The Parameterized Hardness of the k-Center Problem in Transportation Networks
ISSN: 0178-4617, 1432-0541Published: New York Springer US 01.07.2020Published in Algorithmica (01.07.2020)“…In this paper we study the hardness of the k - Center problem on inputs that model transportation networks. For the problem, a graph G = ( V , E ) with edge…”
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3
Size Bounds and Query Plans for Relational Joins
ISSN: 0097-5397, 1095-7111Published: Philadelphia Society for Industrial and Applied Mathematics 01.01.2013Published in SIAM journal on computing (01.01.2013)“…Relational joins are at the core of relational algebra, which in turn is the core of the standard database query language SQL. As their evaluation is expensive…”
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4
Fixed-Parameter Tractability of Multicut Parameterized by the Size of the Cutset
ISSN: 0097-5397, 1095-7111Published: Philadelphia Society for Industrial and Applied Mathematics 01.01.2014Published in SIAM journal on computing (01.01.2014)“…Given an undirected graph $G$, a collection $\{(s_1,t_1), \dots, (s_{k},t_{k})\}$ of pairs of vertices, and an integer ${{p}}$, the Edge Multicut problem asks…”
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5
Chordal Deletion is Fixed-Parameter Tractable
ISSN: 0178-4617, 1432-0541Published: New York Springer-Verlag 01.08.2010Published in Algorithmica (01.08.2010)“…It is known to be NP-hard to decide whether a graph can be made chordal by the deletion of k vertices or by the deletion of k edges. Here we present a…”
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Incompressibility of H-free edge modification problems: Towards a dichotomy
ISSN: 0022-0000, 1090-2724Published: Elsevier Inc 01.05.2022Published in Journal of computer and system sciences (01.05.2022)“…Given a graph G and an integer k, the H-free Edge Editing problem is to find whether there exist at most k pairs of vertices in G such that changing the…”
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7
Anti-factor is FPT Parameterized by Treewidth and List Size (but Counting is Hard)
ISSN: 0178-4617, 1432-0541Published: New York Springer US 01.01.2025Published in Algorithmica (01.01.2025)“…In the general AntiFactor problem, a graph G and, for every vertex v of G , a set X v ⊆ N of forbidden degrees is given. The task is to find a set S of edges…”
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Signatures of hierarchical temporal processing in the mouse visual system
ISSN: 1553-7358, 1553-734X, 1553-7358Published: United States Public Library of Science 22.08.2024Published in PLoS computational biology (22.08.2024)“…A core challenge for the brain is to process information across various timescales. This could be achieved by a hierarchical organization of temporal…”
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9
Embedding optimization reveals long-lasting history dependence in neural spiking activity
ISSN: 1553-7358, 1553-734X, 1553-7358Published: United States Public Library of Science 01.06.2021Published in PLoS computational biology (01.06.2021)“…Information processing can leave distinct footprints on the statistics of neural spiking. For example, efficient coding minimizes the statistical dependencies…”
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10
A parameterized view on matroid optimization problems
ISSN: 0304-3975, 1879-2294Published: Oxford Elsevier B.V 17.10.2009Published in Theoretical computer science (17.10.2009)“…Matroid theory gives us powerful techniques for understanding combinatorial optimization problems and for designing polynomial-time algorithms. However,…”
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Social Decision Making in Autistic Adolescents: The Role of Theory of Mind, Executive Functioning and Emotion Regulation
ISSN: 0162-3257, 1573-3432, 1573-3432Published: New York Springer US 01.07.2020Published in Journal of autism and developmental disorders (01.07.2020)“…Social decision making is often challenging for autistic individuals. Twenty autistic adolescents made decisions in the socially interactive context of a…”
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12
Bin packing with fixed number of bins revisited
ISSN: 0022-0000, 1090-2724Published: Elsevier Inc 01.02.2013Published in Journal of computer and system sciences (01.02.2013)“…As Bin Packing is NP-hard already for k=2 bins, it is unlikely to be solvable in polynomial time even if the number of bins is a fixed constant. However, if…”
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13
Completely inapproximable monotone and antimonotone parameterized problems
ISSN: 0022-0000, 1090-2724Published: Elsevier Inc 01.02.2013Published in Journal of computer and system sciences (01.02.2013)“…We prove that weighted circuit satisfiability for monotone or antimonotone circuits has no fixed-parameter tractable approximation algorithm with any…”
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14
List H-Coloring a Graph by Removing Few Vertices
ISSN: 0178-4617, 1432-0541Published: New York Springer US 01.05.2017Published in Algorithmica (01.05.2017)“…In the deletion version of the list homomorphism problem, we are given graphs G and H , a list L ( v ) ⊆ V ( H ) for each vertex v ∈ V ( G ) , and an integer k…”
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15
Finding and Counting Permutations via CSPs
ISSN: 0178-4617, 1432-0541Published: New York Springer US 01.08.2021Published in Algorithmica (01.08.2021)“…Permutation patterns and pattern avoidance have been intensively studied in combinatorics and computer science, going back at least to the seminal work of…”
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Fixed-Parameter Tractability of Directed Multiway Cut Parameterized by the Size of the Cutset
ISSN: 0097-5397, 1095-7111Published: Philadelphia Society for Industrial and Applied Mathematics 01.01.2013Published in SIAM journal on computing (01.01.2013)“…Given a directed graph $G$, a set of $k$ terminals, and an integer $p$, the Directed Vertex Multiway Cut problem asks whether there is a set $S$ of at most $p$…”
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Multicut Problems in Embedded Graphs: The Dependency of Complexity on the Demand Pattern
ISSN: 0179-5376, 1432-0444Published: 22.10.2025Published in Discrete & computational geometry (22.10.2025)“…The Multicut problem asks for a minimum cut separating certain pairs of vertices: formally, given a graph G and a demand graph H on a set $$T\subseteq V(G)$$ T…”
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Domination and Cut Problems on Chordal Graphs with Bounded Leafage
ISSN: 0178-4617, 1432-0541, 1432-0541Published: New York Springer US 01.05.2024Published in Algorithmica (01.05.2024)“…The leafage of a chordal graph G is the minimum integer ℓ such that G can be realized as an intersection graph of subtrees of a tree with ℓ leaves. We consider…”
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Parameterized complexity of multicut in weighted trees
ISSN: 0304-3975Published: Elsevier B.V 02.11.2023Published in Theoretical computer science (02.11.2023)“…In the Multicut problem, given an undirected graph G, a set of pairs of vertices P, and a budget k, the goal is to determine if there is a set S of at most k…”
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Obtaining a Planar Graph by Vertex Deletion
ISSN: 0178-4617, 1432-0541Published: New York Springer-Verlag 01.04.2012Published in Algorithmica (01.04.2012)“…In the k - Apex problem the task is to find at most k vertices whose deletion makes the given graph planar. The graphs for which there exists a solution form…”
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