9683 search results - page 394 / 1937 » Predicting query performance |
152
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DEXAW
2010
IEEE
15 years 8 months ago
2010
IEEE
Given a set of keywords, we find a maximum Web query (containing the most keywords possible) that respects userdefined bounds on the number of returned hits. We assume a real-world...
199
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IS
2007
15 years 6 months ago
2007
Sensors are often employed to monitor continuously changing entities like locations of moving objects and temperature. The sensor readings are reported to a database system, and a...
173
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DEBU
2000
15 years 6 months ago
2000
Execution plans produced by traditional query optimizers for data integration queries may yield poor performance for several reasons. The cost estimates may be inaccurate, the mem...
186
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DEBU
2000
15 years 6 months ago
2000
As the area of data management for the Internet has gained in popularity, recent work has focused on effectively dealing with unpredictable, dynamic data volumes and transfer rate...
223
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VLDB
2011
ACM
15 years 1 months ago
2011
ACM
Uncertain data is inherent in a few important applications such as environmental surveillance and mobile object tracking. Top-k queries (also known as ranking queries) are often n...