Sciweavers

3456 search results - page 397 / 692
» Semantics in Spatial Databases
Sort
View
ICDE
2003
IEEE
145views Database» more  ICDE 2003»
16 years 8 months ago
PXML: A Probabilistic Semistructured Data Model and Algebra
Despite the recent proliferation of work on semistructured data models, there has been little work to date on supporting uncertainty in these models. In this paper, we propose a m...
Edward Hung, Lise Getoor, V. S. Subrahmanian
VLDB
2007
ACM
95views Database» more  VLDB 2007»
16 years 6 months ago
Matching Twigs in Probabilistic XML
Evaluation of twig queries over probabilistic XML is investigated. Projection is allowed and, in particular, a query may be Boolean. It is shown that for a well-known model of pro...
Benny Kimelfeld, Yehoshua Sagiv
VLDB
2007
ACM
126views Database» more  VLDB 2007»
16 years 6 months ago
SOR: A Practical System for Ontology Storage, Reasoning and Search
Ontology, an explicit specification of shared conceptualization, has been increasingly used to define formal data semantics and improve data reusability and interoperability in en...
Chen Wang, Jean-Sébastien Brunner, Jing Lu,...
SIGMOD
2006
ACM
96views Database» more  SIGMOD 2006»
16 years 6 months ago
Injecting utility into anonymized datasets
Limiting disclosure in data publishing requires a careful balance between privacy and utility. Information about individuals must not be revealed, but a dataset should still be us...
Daniel Kifer, Johannes Gehrke
SIGMOD
2001
ACM
165views Database» more  SIGMOD 2001»
16 years 6 months ago
Mining System Audit Data: Opportunities and Challenges
Intrusion detection is an essential component of computer security mechanisms. It requires accurate and efficient analysis of a large amount of system and network audit data. It c...
Wenke Lee, Wei Fan