8220 search results - page 1243 / 1644 » Querying XML Data |
325
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ICDE
2009
IEEE
16 years 9 months ago
2009
IEEE
Abstract-- Recent work has demonstrated that readings provided by commodity sensor nodes are often of poor quality. In order to provide a valuable sensory infrastructure for monito...
199
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VIS
2009
IEEE
16 years 9 months ago
2009
IEEE
We develop a new algorithm for isosurface extraction and view-dependent filtering from large time-varying fields, by using a novel Persistent Time-Octree (PTOT) indexing structure....
223
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WWW
2005
ACM
16 years 8 months ago
2005
ACM
We consider the problem of efficiently sampling Web search engine query results. In turn, using a small random sample instead of the full set of results leads to efficient approxi...
290
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SIGMOD
2007
ACM
16 years 7 months ago
2007
ACM
Database queries are often exploratory and users often find their queries return too many answers, many of them irrelevant. Existing work either categorizes or ranks the results t...
292
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SIGMOD
2005
ACM
16 years 7 months ago
2005
ACM
In this paper, we study the evaluation of skyline queries with partially-ordered attributes. Because such attributes lack a total ordering, traditional index-based evaluation algo...