481 search results - page 53 / 97 » Approximate XML Query Answers |
195
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WWW
2011
ACM
15 years 27 days ago
2011
ACM
The problem of answering SPARQL queries over virtual SPARQL views is commonly encountered in a number of settings, including while enforcing security policies to access RDF data, ...
170
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WWW
2010
ACM
15 years 11 months ago
2010
ACM
Typical approaches for querying structured Web Data collect (crawl) and pre-process (index) large amounts of data in a central data repository before allowing for query answering....
165
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SCCC
1997
IEEE
15 years 10 months ago
1997
IEEE
A cooperative database allows the user to specify approximate or vague query conditions. A vague query requires the database system to rank the retrieved answers according to thei...
181
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COMPGEOM
2004
ACM
15 years 11 months ago
2004
ACM
We present memory-efficient deterministic algorithms for constructing -nets and -approximations of streams of geometric data. Unlike probabilistic approaches, these deterministic...
164
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COMPGEOM
2009
ACM
16 years 15 days ago
2009
ACM
We present cache-oblivious solutions to two important variants of range searching: range reporting and approximate range counting. Our main contribution is a general approach for ...