565 search results - page 89 / 113 » Multiple Range Query Optimization in Spatial Databases |
89
Voted
SIGMOD
2002
ACM
15 years 9 months ago
2002
ACM
The widespread distribution and availability of smallscale sensors, actuators, and embedded processors is transforming the physical world into a computing platform. One such examp...
VLDB
1999
ACM
15 years 1 months ago
1999
ACM
This paper aims to improve the accuracy of query result-size estimations in query optimizers by leveraging the dynamic feedback obtained from observations on the executed query wo...
107
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SSDBM
1999
IEEE
15 years 1 months ago
1999
IEEE
Large scale data analysis and mining activities, such as identifying interesting trends, making unusual patterns to stand out and verifying hypotheses, require sophisticated infor...
90
Voted
SIGMOD
2002
ACM
15 years 9 months ago
2002
ACM
This paper addresses the problem of evaluating ranked top-? queries with expensive predicates. As major DBMSs now all support expensive user-defined predicates for Boolean queries...
WWW
2005
ACM
15 years 10 months ago
2005
ACM
Continuous queries are used to monitor changes to time varying data and to provide results useful for online decision making. Typically a user desires to obtain the value of some ...