2853 search results - page 472 / 571 » On the Efficiency of Provenance Queries |
190
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ICDE
2001
IEEE
16 years 1 months ago
2001
IEEE
We consider the problems of computing aggregation queries in temporal databases, and of maintaining materialized temporal aggregate views efficiently. The latter problem is partic...
102
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WWW
2004
ACM
16 years 17 days ago
2004
ACM
This paper presents a system for efficient data transformations between XML and relational databases, called XML Data Mediator (XDM). XDM enables the transformation by externalizi...
KDD
2006
ACM
16 years 9 days ago
2006
ACM
Ordering and ranking items of different types are important tasks in various applications, such as query processing and scientific data mining. A total order for the items can be ...
STOC
2002
ACM
16 years 6 days ago
2002
ACM
Most research on nearest neighbor algorithms in the literature has been focused on the Euclidean case. In many practical search problems however, the underlying metric is non-Eucl...
ICALP
2009
Springer
16 years 5 days ago
2009
Springer
We present a range of new results for testing properties of Boolean functions that are defined in terms of the Fourier spectrum. Broadly speaking, our results show that the propert...