3891 search results - page 291 / 779 » Query Models |
202
click to vote
CIKM
2011
Springer
14 years 6 months ago
2011
Springer
A fundamental problem related to RDF query processing is selectivity estimation, which is crucial to query optimization for determining a join order of RDF triple patterns. In thi...
159
click to vote
WISE
2002
Springer
15 years 11 months ago
2002
Springer
A distributed search system consists of a large number of autonomous search servers logically connected in a peerto-peer network. Each search server maintains a local index of a c...
183
click to vote
CN
2002
15 years 6 months ago
2002
MSL (Model Schema Language) is an attempt to formalize some of the core idea in XML Schema. The benefits of a formal description is that it is both concise and precise. MSL has al...
278
click to vote
SIGMOD
2006
ACM
16 years 6 months ago
2006
ACM
This paper introduces the Tuple Graph (TuG) synopses, a new class of data summaries that enable accurate selectivity estimates for complex relational queries. The proposed summari...
177
click to vote
WEBDB
2005
Springer
15 years 12 months ago
2005
Springer
In the relational model it has been shown that the flat relational algebra has the same expressive power as the nested relational algebra, as far as queries over flat relations ...