9683 search results - page 236 / 1937 » Query performance prediction |
164
Voted
BTW
2003
Springer
15 years 8 months ago
2003
Springer
Abstract: Optimization of nested queries, in particular finding equivalent “flattened” queries for queries that employ the SQL sub-query construct, has been researched extensiv...
133
click to vote
SIGMOD
2010
ACM
15 years 8 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...
170
Voted
TREC
2007
15 years 4 months ago
2007
Exegy’s submission for the TREC 2007 million query track consisted of results obtained by running the queries against the raw data, i.e., the data was not indexed. The hardwarea...
160
Voted
DPD
1998
15 years 3 months ago
1998
Distributed databases operating over wide-area networks such as the Internet, must deal with the unpredictable nature of the performance of communication. The response times of acc...
151
Voted
CIKM
2010
Springer
15 years 1 months ago
2010
Springer
Dealing with verbose (or long) queries poses a new challenge for information retrieval. Selecting a subset of the original query (a "sub-query") has been shown to be an ...