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FOIKS
2006
Springer
14 years 7 days ago
Modeling the Evolution of Objects in Temporal Information Systems
This paper presents a semantic foundation of temporal conceptual models used to design temporal information systems. We consider a modeling language able to express both timestampi...
Alessandro Artale, Christine Parent, Stefano Spacc...
SAT
2005
Springer
145views Hardware» more  SAT 2005»
14 years 2 months ago
A New Approach to Model Counting
We introduce ApproxCount, an algorithm that approximates the number of satisfying assignments or models of a formula in propositional logic. Many AI tasks, such as calculating degr...
Wei Wei, Bart Selman
AIMSA
2008
Springer
14 years 2 months ago
Nested Precedence Networks with Alternatives: Recognition, Tractability, and Models
Integrated modeling of temporal and logical constraints is important for solving real-life planning and scheduling problems. Logical constrains extend the temporal formalism by rea...
Roman Barták, Ondrej Cepek
CAV
2004
Springer
130views Hardware» more  CAV 2004»
14 years 10 days ago
Global Model-Checking of Infinite-State Systems
Abstract. We extend the automata-theoretic framework for reasoning about infinitestate sequential systems to handle also the global model-checking problem. Our framework is based o...
Nir Piterman, Moshe Y. Vardi
LPAR
2010
Springer
13 years 6 months ago
SAT Encoding of Unification in EL
Unification in Description Logics has been proposed as a novel inference service that can, for example, be used to detect redundancies in ontologies. In a recent paper, we have sho...
Franz Baader, Barbara Morawska