3269 search results - page 463 / 654 » Query Optimization for XML |
246
click to vote
ICDE
2007
IEEE
16 years 7 months ago
2007
IEEE
Traditional DBMSs decouple statistics collection and query optimization both in space and time. Decoupling in time may lead to outdated statistics. Decoupling in space may cause s...
281
click to vote
ICDE
2005
IEEE
16 years 7 months ago
2005
IEEE
Index structures are designed to optimize search performance, while at the same time supporting efficient data updates. Although not explicit, existing index structures are typica...
180
click to vote
ISCSCT
2008
IEEE
16 years 26 days ago
2008
IEEE
—Relevance feedback(RF) has been proved to be an effective way to improve the precision and recall of 3D model retrieval. However, the existing RF approaches do not consider whic...
174
click to vote
COMPGEOM
2006
ACM
16 years 13 days ago
2006
ACM
This paper examines the computation of the Voronoi diagram of a set of ellipses in the Euclidean plane. We propose the first complete algorithms, under the exact computation para...
154
click to vote
VLDB
2004
ACM
15 years 11 months ago
2004
ACM
When query optimizers erroneously assume that database columns are statistically independent, they can underestimate the selectivities of conjunctive predicates by orders of magni...