436 search results - page 4 / 88 » Estimating the Quality of Data in Relational Databases |
158
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SIGMOD
2007
ACM
15 years 9 months ago
2007
ACM
Accurate cardinality estimation is critically important to high-quality query optimization. It is well known that conventional cardinality estimation based on histograms or simila...
KDD
2009
ACM
15 years 2 months ago
2009
ACM
1 In this article, we report our efforts in mining the information encoded as clickthrough data in the server logs to evaluate and monitor the relevance ranking quality of a commer...
ICDE
2006
IEEE
15 years 3 months ago
2006
IEEE
Data-driven scientific applications utilize workflow frameworks to execute complex dataflows, resulting in derived data products of unknown quality. We discuss our on-going resear...
165
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SIGMOD
2009
ACM
15 years 9 months ago
2009
ACM
Conditional functional dependencies (CFDs) have recently been proposed as extensions of classical functional dependencies that apply to a certain subset of the relation, as specif...
SIGMOD
1999
ACM
15 years 1 months ago
1999
ACM
Research and products for the integration of heterogeneous legacy source databases in data warehousing have addressed numerous data quality problems in or between the sources. Suc...