Sciweavers

443 search results - page 55 / 89
» Relational Approach to Logical Query Optimization of XPath
Sort
View
DLOG
2003
13 years 9 months ago
Conceptual Modeling with Description Logics
The purpose of the chapter is to help someone familiar with DLs to understand the issues involved in developing an ontology for some universe of discourse, which is to become a co...
Alexander Borgida, Ronald J. Brachman
CORR
2011
Springer
177views Education» more  CORR 2011»
13 years 2 months ago
Tuffy: Scaling up Statistical Inference in Markov Logic Networks using an RDBMS
Markov Logic Networks (MLNs) have emerged as a powerful framework that combines statistical and logical reasoning; they have been applied to many data intensive problems including...
Feng Niu, Christopher Ré, AnHai Doan, Jude ...
DALT
2007
Springer
13 years 11 months ago
Extending Propositional Logic with Concrete Domains for Multi-issue Bilateral Negotiation
We present a novel approach to knowledge-based automated one-shot multi-issue bilateral negotiation handling, in a homogeneous setting, both numerical features and non-numerical on...
Azzurra Ragone, Tommaso Di Noia, Eugenio Di Sciasc...
RR
2010
Springer
13 years 6 months ago
Query-Based Access Control for Ontologies
Role-based access control is a standard mechanism in information systems. Based on the role a user has, certain information is kept from the user even if requested. For ontologies ...
Martin Knechtel, Heiner Stuckenschmidt
ICDT
1990
ACM
110views Database» more  ICDT 1990»
13 years 11 months ago
Beginnings of a Theory of General Database Completions
Ordinary logical implication is not enough for answering queries in a logic database, since especially negative information is only implicitly represented in the database state. M...
Stefan Brass