1449 search results - page 182 / 290 » Modeling and Querying Moving Objects |
176
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SIGMOD
2002
ACM
16 years 6 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...
184
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VLDB
2007
ACM
16 years 15 days ago
2007
ACM
Uncertain data are inherent in some important applications. Although a considerable amount of research has been dedicated to modeling uncertain data and answering some types of qu...
209
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TKDE
2010
15 years 1 months ago
2010
The sparse data is becoming increasingly common and available in many real-life applications. However, relative little attention has been paid to effectively model the sparse data ...
149
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RTSS
2006
IEEE
16 years 12 days ago
2006
IEEE
A real-time database is composed of real-time objects whose values remain valid only within their validity intervals. Each object in the database models a real world entity. The f...
164
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DC
2001
15 years 7 months ago
2001
This paper describes the latest version of the ABC metadata model. This model has been developed within the Harmony international digital library project to provide a common conce...