620 search results - page 75 / 124 » Algorithms for Rewriting Aggregate Queries Using Views |
130
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SIGMOD
1999
ACM
15 years 8 months ago
1999
ACM
In large data warehousing environments, it is often advantageous to provide fast, approximate answers to complex aggregate queries based on statistical summaries of the full data....
109
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CIKM
2009
Springer
15 years 10 months ago
2009
Springer
Leveraging information from relevance assessments has been proposed as an effective means for improving retrieval. We introduce a novel language modeling method which uses inform...
126
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BTW
2007
Springer
15 years 10 months ago
2007
Springer
: Statistics that accurately describe the distribution of data values in the columns of relational tables are essential for effective query optimization in a database management sy...
144
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IPPS
1998
IEEE
15 years 8 months ago
1998
IEEE
On-Line Analytical Processing techniques are used for data analysis and decision support systems. The multidimensionality of the underlying data is well represented by multidimens...
122
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CORR
2010
Springer
15 years 4 months ago
2010
Springer
In recent years, the significant growth of RDF data used in numerous applications has made its efficient and scalable manipulation an important issue. In this paper, we present RD...