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» A Tractable Class of Abduction Problems
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AAAI
2004
14 years 10 months ago
Collapsibility and Consistency in Quantified Constraint Satisfaction
The concept of consistency has pervaded studies of the constraint satisfaction problem. We introduce two concepts, which are inspired by consistency, for the more general framewor...
Hubie Chen
FSTTCS
2009
Springer
15 years 4 months ago
Domination Problems in Nowhere-Dense Classes
We investigate the parameterized complexity of generalisations and variations of the dominating set problem on classes of graphs that are nowhere dense. In particular, we show that...
Anuj Dawar, Stephan Kreutzer
LICS
2006
IEEE
15 years 3 months ago
On Tractability and Congruence Distributivity
Constraint languages that arise from finite algebras have recently been the object of study, especially in connection with the Dichotomy Conjecture of Feder and Vardi. An importa...
Emil W. Kiss, Matthew Valeriote
SIAMCOMP
2008
84views more  SIAMCOMP 2008»
14 years 9 months ago
Resolution Is Not Automatizable Unless W[P] Is Tractable
We show that neither Resolution nor tree-like Resolution is automatizable unless the class W[P] from the hierarchy of parameterized problems is fixed-parameter tractable by randomi...
Michael Alekhnovich, Alexander A. Razborov
CSL
2007
Springer
15 years 3 months ago
Subexponential Time and Fixed-Parameter Tractability: Exploiting the Miniaturization Mapping
Recently it has been shown that the miniaturization mapping M faithfully translates subexponential parameterized complexity into (unbounded) parameterized complexity. We determine...
Yijia Chen, Jörg Flum