8016 search results - page 1320 / 1604 » On the practical genetic algorithms |
299
click to vote
SIGMOD
2009
ACM
16 years 6 months ago
2009
ACM
A large number of online databases are hidden behind the web. Users to these systems can form queries through web forms to retrieve a small sample of the database. Sampling such h...
246
click to vote
SIGMOD
2008
ACM
16 years 6 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...
252
click to vote
SIGMOD
2007
ACM
16 years 6 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...
233
click to vote
SIGMOD
2007
ACM
16 years 6 months ago
2007
ACM
In contrast to classical databases and IR systems, real-world information systems have to deal increasingly with very vague and diverse structures for information management and s...
243
click to vote
SIGMOD
2006
ACM
16 years 6 months ago
2006
ACM
We define a match join of R and S with predicate to be a subset of the -join of R and S such that each tuple of R and S contributes to at most one result tuple. Match joins and t...