7576 search results - page 1397 / 1516 » On Querying Ontologies and Databases |
SIGMOD
2001
ACM
14 years 9 months ago
2001
ACM
Approximating the joint data distribution of a multi-dimensional data set through a compact and accurate histogram synopsis is a fundamental problem arising in numerous practical ...
PODS
2005
ACM
14 years 9 months ago
2005
ACM
There is growing interest in algorithms for processing and querying continuous data streams (i.e., data that is seen only once in a fixed order) with limited memory resources. Pro...
EDBT
2008
ACM
14 years 9 months ago
2008
ACM
This paper studies the problem of evaluating continuous multi-way joins on top of Distributed Hash Tables (DHTs). We present a novel algorithm, called recursive join (RJoin), that...
EDBT
2008
ACM
14 years 9 months ago
2008
ACM
Due to the well-known dimensionality curse problem, search in a high-dimensional space is considered as a "hard" problem. In this paper, a novel symmetrical encoding-bas...
ICDE
2010
IEEE
14 years 3 months ago
2010
IEEE
— We demonstrate ROX, a run-time optimizer of XQueries, that focuses on finding the best execution order of XPath steps and relational joins in an XQuery. The problem of join or...