316 search results - page 36 / 64 » Evaluation of Conditional Preference Queries |
SIGMOD
2004
ACM
14 years 10 months ago
2004
ACM
Virtually every commercial query optimizer chooses the best plan for a query using a cost model that relies heavily on accurate cardinality estimation. Cardinality estimation erro...
VLDB
2007
ACM
14 years 10 months ago
2007
ACM
Views over probabilistic data contain correlations between tuples, and the current approach is to capture these correlations using explicit lineage. In this paper we propose an al...
HICSS
2008
IEEE
13 years 10 months ago
2008
IEEE
This study investigates how consumers evaluate a product when they read conflicting online consumer reviews of evaluations from previous consumers. If consumers are rational, as i...
ICDE
2000
IEEE
14 years 11 months ago
2000
IEEE
In high-dimensional and complex metric spaces, determining the nearest neighbor (NN) of a query object ? can be a very expensive task, because of the poor partitioning operated by...
SIGMOD
2008
ACM
14 years 10 months ago
2008
ACM
Tools for generating test queries for databases do not explicitly take into account the actual data in the database. As a consequence, such tools cannot guarantee suitable coverag...