1175 search results - page 83 / 235 » Querying by examples |
DBSEC
2000
13 years 11 months ago
2000
We propose two extensions to the SQL grant/revoke security model. In SQL, grants are unconditional, so the grantor must simply trust the recipient's discretion. We allow a gr...
ICDE
2006
IEEE
14 years 4 months ago
2006
IEEE
Structured P2P systems based on distributed hash tables are a popular choice for building large-scaled data management systems. Generally, they only support exact match queries, b...
ML
2007
ACM
13 years 9 months ago
2007
ACM
We develop new algorithms for learning monadic node selection queries in unranked trees from annotated examples, and apply them to visually interactive Web information extraction. ...
JANCL
2006
13 years 10 months ago
2006
This paper describes an experimental platform for approximate knowledge databases called the Approximate Knowledge Database (AKDB), based on a semantics inspired by rough sets. The...
DL
1998
Springer
14 years 2 months ago
1998
Springer
When a digital library is decomposed into many geographically distributed repositories,searchefficiencybecomesan issue. Increasing network congestion makes this a compelling issue...