2217 search results - page 18 / 444 » Rank-aware Query Optimization |
ICALP
2009
Springer
14 years 10 months ago
2009
Springer
We consider the following problem: given an unsorted array of n elements, and a sequence of intervals in the array, compute the median in each of the subarrays defined by the inter...
SIGMOD
2010
ACM
14 years 2 months ago
2010
ACM
The probabilistic threshold query (PTQ) is one of the most common queries in uncertain databases, where all results satisfying the query with probabilities that meet the threshold...
SIGMOD
2007
ACM
14 years 9 months ago
2007
ACM
Managing uncertain data using probabilistic frameworks has attracted much interest lately in the database literature, and a central computational challenge is probabilistic infere...
SIGMOD
2010
ACM
14 years 2 months ago
2010
ACM
Current relational databases require that a database schema exist prior to data entry and require manual optimization for best performance. We describe the query optimization tech...
CIKM
2005
Springer
14 years 3 months ago
2005
Springer
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...