313 search results - page 40 / 63 » Cost-Based Object Query Optimization |
SIGIR
2012
ACM
13 years 4 days ago
2012
ACM
Many techniques for improving search result quality have been proposed. Typically, these techniques increase average effectiveness by devising advanced ranking features and/or by...
170
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VLDB
2007
ACM
15 years 10 months ago
2007
ACM
Incompleteness due to missing attribute values (aka "null values") is very common in autonomous web databases, on which user accesses are usually supported through media...
PODS
1999
ACM
15 years 2 months ago
1999
ACM
One of the most important types of query processing in spatial databases and geographic information systems is the spatial join, an operation that selects, from two relations, all...
AAAI
2010
14 years 11 months ago
2010
Web search engines respond to a query by returning more results than can be reasonably reviewed. These results typically include the title, link, and snippet of content from the t...
140
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MTA
2006
14 years 9 months ago
2006
Shape of an object is an important feature for image and multimedia similarity retrievals. In our previous studies we introduced a new boundary-based technique (MBC-based) for shap...