486 search results - page 21 / 98 » Evaluating Top-k Queries over Web-Accessible Databases |
113
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WWW
2010
ACM
15 years 6 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....
WWW
2005
ACM
16 years 2 months ago
2005
ACM
Order-based queries over XML data include XPath navigation axes such as following-sibling and following. In this paper, we present holistic algorithms that evaluate such order-bas...
209
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GIS
2007
ACM
16 years 2 months ago
2007
ACM
Continuous spatial queries posted within an environment of moving objects produce as their results a time-varying set of objects. In the most ambitious case both queries and data ...
DEXA
2003
Springer
15 years 6 months ago
2003
Springer
Wireless data broadcasting is well known for its excellent scalability. Most geographical data, such as weather and traffic, is public information and has a large number of potenti...
105
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WEBDB
2004
Springer
15 years 6 months ago
2004
Springer
XML and semi-structured data is usually modeled using graph structures. Structural summaries, which have been proposed to speedup XML query processing have graph forms as well. Th...