2674 search results - page 331 / 535 » Data Models and Query Languages for Spatial Databases |
262
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PODS
2010
ACM
15 years 11 months ago
2010
ACM
Cardinality estimation is the problem of estimating the number of tuples returned by a query; it is a fundamentally important task in data management, used in query optimization, ...
271
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MMM
2005
Springer
16 years 4 days ago
2005
Springer
The efficient management of complex objects has become an enabling technology for modern multimedia information systems as well as for many novel database applications. Unfortunat...
195
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IJCNLP
2004
Springer
15 years 12 months ago
2004
Springer
In this paper, a series of window-based methods is proposed for information retrieval. Compared with traditional tf-idf model, our approaches are based on two new key notions. The ...
286
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ICDE
2002
IEEE
16 years 8 months ago
2002
IEEE
Spatio-temporal databases store information about the positions of individual objects over time. In many applications however, such as traffic supervision or mobile communication ...
190
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DEBU
2008
15 years 6 months ago
2008
In this paper, we describe the TIMBER XML database system implemented at University of Michigan. TIMBER was one of the first native XML database systems, designed from the ground ...