313 search results - page 39 / 63 » Cost-Based Object Query Optimization |
109
click to vote
DLOG
2008
15 years 2 months ago
2008
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
ICIP
2003
IEEE
16 years 1 months ago
2003
IEEE
In this paper, we evaluate and investigate two main types of relevance feedback algorithms; the Euclidean and the correlation?based approaches. In the first case, we examine heuri...
ICALP
1990
Springer
15 years 3 months ago
1990
Springer
We show how (now familiar) hierarchical representations of (convex) polyhedra can be used to answer various separation queries efficiently (in a number of cases, optimally). Our e...
167
click to vote
IGIS
1994
15 years 3 months ago
1994
During the last decade various spatial data structures have been designed and compared against each other, all of them re ecting a dynamic situation with ongoing object insertion a...
180
click to vote
ICDE
2000
IEEE
16 years 1 months ago
2000
IEEE
For an enterprise to take advantage of the opportunities afforded by electronic commerce it must be able to make decisions about business transactions in near-realtime. In the com...