617 search results - page 24 / 124 » Semantic queries in databases: problems and challenges |
ICDCS
2005
IEEE
14 years 2 months ago
2005
IEEE
We consider the problem of handling similarity queries in peer-to-peer databases. Given a query for a data object, we propose an indexing and searching mechanism which returns the...
EDBTW
2006
Springer
14 years 13 days ago
2006
Springer
Querying live media streams is a challenging problem that becomes an essential requirement in a growing number of applications. We address the problem of evaluating continuous quer...
CORR
2010
Springer
13 years 8 months ago
2010
Springer
Very large databases are required to store massive amounts of data that are continuously inserted and queried. Analyzing huge data sets and extracting valuable pattern in many appl...
DBISP2P
2003
Springer
14 years 2 months ago
2003
Springer
In this paper we give a robust logical and computational characterisation of peer-to-peer (p2p) database systems. We first define a precise model-theoretic semantics of a p2p sys...
ISMIS
1999
Springer
14 years 1 months ago
1999
Springer
Semantic Query Optimisation makes use of the semantic knowledge of a database (rules) to perform query transformation. Rules are normally learned from former queries fired by the u...