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CORR
2010
Springer
149views Education» more  CORR 2010»
13 years 5 months ago
Lower Bounds for the Complexity of Monadic Second-Order Logic
Courcelle's famous theorem from 1990 states that any property of graphs definable in monadic second-order logic (MSO2) can be decided in linear time on any class of graphs of ...
Stephan Kreutzer, Siamak Tazari
FSTTCS
2006
Springer
13 years 9 months ago
On Continuous Timed Automata with Input-Determined Guards
We consider a general class of timed automata parameterized by a set of "input-determined" operators, in a continuous time setting. We show that for any such set of opera...
Fabrice Chevalier, Deepak D'Souza, Pavithra Prabha...
PODS
2007
ACM
104views Database» more  PODS 2007»
14 years 5 months ago
XML transformation by tree-walking transducers with invisible pebbles
The pebble tree automaton and the pebble tree transducer are enhanced by additionally allowing an unbounded number of `invisible' pebbles (as opposed to the usual `visible�...
Joost Engelfriet, Hendrik Jan Hoogeboom, Bart Samw...
PODS
2007
ACM
171views Database» more  PODS 2007»
14 years 5 months ago
Monadic datalog over finite structures with bounded treewidth
Bounded treewidth and Monadic Second Order (MSO) logic have proved to be key concepts in establishing fixed-parameter tractability results. Indeed, by Courcelle's Theorem we ...
Georg Gottlob, Reinhard Pichler, Fang Wei
CSL
2009
Springer
13 years 12 months ago
On the Parameterised Intractability of Monadic Second-Order Logic
One of Courcelle’s celebrated results states that if C is a class of graphs of bounded tree-width, then model-checking for monadic second order logic (MSO2) is fixed-parameter t...
Stephan Kreutzer