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ECAI
2010
Springer
13 years 4 months ago
Integrating Bipolar Fuzzy Mathematical Morphology in Description Logics for Spatial Reasoning
Bipolarity is an important feature of spatial information, involved in the expression of preferences and constraints about spatial positioning or in pairs of opposite spatial relat...
Céline Hudelot, Jamal Atif, Isabelle Bloch
CADE
2001
Springer
14 years 7 months ago
RACER System Description
RACER implements a TBox and ABox reasoner for the logic SHIQ. RACER was the first full-fledged ABox description logic system for a very expressive logic and is based on optimized s...
Ralf Möller, Volker Haarslev
LFCS
2009
Springer
14 years 1 months ago
Fuzzy Description Logic Reasoning Using a Fixpoint Algorithm
We present FixIt(ALC), a novel procedure for deciding knowledge base (KB) satisfiability in the Fuzzy Description Logic (FDL) ALC. FixIt(ALC) does not search for tree-structured m...
Uwe Keller, Stijn Heymans
DLOG
2008
13 years 9 months ago
Taming the Infinite Chase: Query Answering under Expressive Relational Constraints
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
Andrea Calì, Georg Gottlob, Michael Kifer