121 search results - page 24 / 25 » Semantic optimization techniques for preference queries |
DLOG
2006
13 years 7 months ago
2006
Abstract Practical description logic systems play an ever-growing role for knowledge representation and reasoning research even in distributed environments. In particular, the onto...
SIGIR
2010
ACM
13 years 10 months ago
2010
ACM
The ability of fast similarity search at large scale is of great importance to many Information Retrieval (IR) applications. A promising way to accelerate similarity search is sem...
VLDB
2005
ACM
13 years 11 months ago
2005
ACM
XML and XQuery semantics are very sensitive to the order of the produced output. Although pattern-tree based algebraic approaches are becoming more and more popular for evaluating...
DLOG
2004
13 years 7 months ago
2004
We present algorithms based on truth-prefixed tableaux to solve both Concept Abduction and Contraction in ALN DL. We also analyze the computational complexity of the problems, sho...
SIGMOD
2006
ACM
14 years 6 months ago
2006
ACM
Relational XQuery systems try to re-use mature relational data management infrastructures to create fast and scalable XML database technology. This paper describes the main featur...