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» Answer Set Programming and Bounded Model Checking
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FSTTCS
2010
Springer
13 years 5 months ago
The Complexity of Model Checking (Collapsible) Higher-Order Pushdown Systems
We study (collapsible) higher-order pushdown systems -- theoretically robust and well-studied models of higher-order programs -- along with their natural subclass called (collapsi...
Matthew Hague, Anthony Widjaja To
ICLP
2003
Springer
14 years 1 months ago
Uniform Equivalence of Logic Programs under the Stable Model Semantics
In recent research on nonmonotonic logic programming, repeatedly strong equivalence of logic programs P and Q has been considered, which holds if the programs P ∪ R and Q ∪ R h...
Thomas Eiter, Michael Fink
AAAI
2006
13 years 9 months ago
Characterizing Data Complexity for Conjunctive Query Answering in Expressive Description Logics
Description Logics (DLs) are the formal foundations of the standard web ontology languages OWL-DL and OWL-Lite. In the Semantic Web and other domains, ontologies are increasingly ...
Magdalena Ortiz, Diego Calvanese, Thomas Eiter
AAAI
2006
13 years 9 months ago
Weighted Constraint Satisfaction with Set Variables
Set variables are ubiquitous in modeling (soft) constraint problems, but efforts on practical consistency algorithms for Weighted Constraint Satisfaction Problems (WCSPs) have onl...
J. H. M. Lee, C. F. K. Siu
DFG
2004
Springer
13 years 11 months ago
Verification of PLC Programs Given as Sequential Function Charts
Programmable Logic Controllers (PLC) are widespread in the manufacturing and processing industries to realize sequential procedures and to avoid safety-critical states. For the spe...
Nanette Bauer, Sebastian Engell, Ralf Huuck, Sven ...