1709 search results - page 18 / 342 » Comparing the Performance of Database Selection Algorithms |
SIGIR
2002
ACM
14 years 11 months ago
2002
ACM
We compare standard global IR searching with user-centric localized techniques to address the database selection problem. We conduct a series of experiments to compare the retriev...
110
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VLDB
2004
ACM
15 years 5 months ago
2004
ACM
It is well established that bitmap indices are efficient for read-only attributes with low attribute cardinalities. For an attribute with a high cardinality, the size of the bitma...
VLDB
1990
ACM
15 years 3 months ago
1990
ACM
In this paper, we describe a new indexing technique, the time indez, for improving the performance of certain classes of temporal queries. The time index can be used to retrieve v...
100
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TIFS
2008
14 years 11 months ago
2008
This paper presents a method for detection of double JPEG compression and a maximum likelihood estimator of the primary quality factor. These methods are essential for construction...
194
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ICDE
2009
IEEE
16 years 1 months ago
2009
IEEE
Online approaches to physical design tuning have received considerable attention in the recent literature, with a focus on the problem of online index selection. However, it is dif...