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» Fixed-Parameter Intractability
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COCO
1992
Springer
96views Algorithms» more  COCO 1992»
13 years 9 months ago
Fixed-Parameter Intractability
We give a novel characterization of W[1], the most important fixed-parameter intractability class in the W-hierarchy, using Boolean circuits that consist solely of majority gates. ...
Rodney G. Downey, Michael R. Fellows
KR
2010
Springer
13 years 10 months ago
Towards Fixed-Parameter Tractable Algorithms for Argumentation
Abstract argumentation frameworks have received a lot of interest in recent years. Most computational problems in this area are intractable but several tractable fragments have be...
Wolfgang Dvorák, Reinhard Pichler, Stefan W...
ALGORITHMICA
2010
104views more  ALGORITHMICA 2010»
13 years 5 months ago
Fixed-Parameter Approximation: Conceptual Framework and Approximability Results
The notion of fixed-parameter approximation is introduced to investigate the approximability of optimization problems within the framework of fixed-parameter computation. This work...
Liming Cai, Xiuzhen Huang
ESA
2009
Springer
92views Algorithms» more  ESA 2009»
13 years 11 months ago
Minimizing Movement: Fixed-Parameter Tractability
Abstract. We study an extensive class of movement minimization problems which arise from many practical scenarios but so far have little theoretical study. In general, these proble...
Erik D. Demaine, MohammadTaghi Hajiaghayi, D&aacut...
SIAMCOMP
2010
135views more  SIAMCOMP 2010»
12 years 12 months ago
Intractability of Clique-Width Parameterizations
We show that Edge Dominating Set, Hamiltonian Cycle, and Graph Coloring are W[1]-hard parameterized by clique-width. It was an open problem, explicitly mentioned in several papers,...
Fedor V. Fomin, Petr A. Golovach, Daniel Lokshtano...