Open AccessBook
Parameterized complexity theory
Jörg Flum,Martin Grohe +1 more
TLDR
Fixed-Parameter Tractability.Abstract:
Fixed-Parameter Tractability.- Reductions and Parameterized Intractability.- The Class W[P].- Logic and Complexity.- Two Fundamental Hierarchies.- The First Level of the Hierarchies.- The W-Hierarchy.- The A- Hierarchy.- Kernelization and Linear Programming Techniques.- The Automata-Theoretic Approach.- Tree Width.- Planarity and Bounded Local Tree Width.- Homomorphisms and Embeddings.- Parameterized Counting Problems.- Bounded Fixed-Parameter Tractability.- Subexponential Fixed-Parameter Tractability.- Appendix, Background from Complexity Theory.- References.- Notation.- Index.read more
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Preventing Unraveling in Social Networks Gets Harder
TL;DR: Improved hardness results for the Anchored-Core problem are given, which shows that the problem is FPT on planar graphs parameterized by b for all k, even if the maximum degree of the graph is $k+2.
Proceedings ArticleDOI
A polynomial kernel for multicut in trees
TL;DR: It is shown that the Multicut In Trees problem, which consists in deciding, given a tree, a set of requests and an integer k, has a polynomial kernel.
Journal ArticleDOI
The complexity of nonrepetitive coloring
Dániel Marx,Marcus Schaefer +1 more
TL;DR: It is shown that determining whether a particular coloring of a graph is nonrepetitive is coNP-hard, even if the number of colors is limited to four, and the problem becomes fixed-parameter tractable, if the authors only exclude colorings xx up to a fixed length k of x.
Journal ArticleDOI
A selection of useful theoretical tools for the design and analysis of optimization heuristics
Gregory Gutin,Daniel Karapetyan +1 more
TL;DR: A brief description of a selection of theoretical tools that can be used for designing and analyzing various heuristics, including several examples of preprocessing procedures and probabilistic instance analysis methods are given.
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Constraint Satisfaction Problems Parameterized Above or Below Tight Bounds: A Survey
Gregory Gutin,Anders Yeo +1 more
TL;DR: This work considers constraint satisfaction problems parameterized above or below tight bounds, and discusses results, both polynomial kernels and parameterized algorithms, obtained for the problems mainly in the last few years.