376 search results - page 31 / 76 » On the semantics and evaluation of top-k queries in probabil... |
SIGIR
2010
ACM
13 years 5 months ago
2010
ACM
Keyword queries over structured databases are notoriously ambiguous. No single interpretation of a keyword query can satisfy all users, and multiple interpretations may yield over...
ODBIS
2007
Springer
14 years 2 months ago
2007
Springer
Abstract. RDF Schema (RDFS) extends RDF with a schema vocabulary with a predefined semantics. Evaluating queries which involve this vocabulary is challenging, and there is not yet...
ESWS
2008
Springer
13 years 9 months ago
2008
Springer
The goal of this paper is to give an overview of the basics of the theory of RDF databases. We provide a formal definition of RDF that includes the features that distinguish this m...
IJAR
2007
13 years 7 months ago
2007
When integrating data coming from multiple different sources we are faced with the possibility of inconsistency in databases. A paraconsistent approach for knowledge base integra...
ISI
2006
Springer
13 years 7 months ago
2006
Springer
Access control mechanisms are commonly used to provide control over who may access sensitive information. However, malicious users can exploit the correlation among the data and in...