272 search results - page 30 / 55 » Paraconsistent Reasoning for Expressive and Tractable Descri... |
DLOG
2008
13 years 10 months ago
2008
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...
ESWS
2007
Springer
14 years 1 months ago
2007
Springer
Abstract. This work is motivated by experiences in the course of developing an ontology-based application within a real-world setting. We found out that current benchmarks are not ...
DEXAW
1999
IEEE
13 years 12 months ago
1999
IEEE
Recent efforts in the Conceptual Modelling community have been devoted to properly capturing time-varying information, and several proposals of temporally enhanced Entity-Relation...
DLOG
2003
13 years 9 months ago
2003
We present lower bounds on the computational complexity of satisfiability and subsumption in several description logics. We interpret these lower bounds as coming from different...
DLOG
2001
13 years 9 months ago
2001
Description logics have been designed and studied in a modular way. This has allowed a methodic approach to complexity evaluation. We present a way to preserve this modularity in ...