3341 search results - page 147 / 669 » On Bounded Queries and Approximation |
ADBIS
2009
Springer
14 years 8 months ago
2009
Springer
We consider the problem of selecting views and indexes that minimize the evaluation costs of the important queries under an upper bound on the disk space available for storing the ...
PODS
1992
ACM
15 years 2 months ago
1992
ACM
: We study the problem of determining whether a given recursive Datalog program is equivalent to a given nonrecursive Datalog program. Since nonrecursive Datalog programs are equiv...
DIS
1998
Springer
15 years 2 months ago
1998
Springer
We consider the exact learning in the query model. We deal with all types of queries introduced by Angluin: membership, equivalence, superset, subset, disjointness and exhaustivene...
FQAS
2006
Springer
15 years 1 months ago
2006
Springer
Searchers' difficulty in formulating effective queries for their information needs is well known. Analysis of search session logs shows that users often pose short, vague quer...
ICDE
2005
IEEE
15 years 3 months ago
2005
IEEE
In recent years, content-based image retrieval has become more and more important in many application areas. Similarity retrieval is inherently a very demanding process, in partic...