3241 search results - page 510 / 649 » Searching for Hidden-Web Databases |
235
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SIGMOD
2008
ACM
16 years 5 months ago
2008
ACM
Mobile devices equipped with positioning capabilities (e.g., GPS) can ask location-dependent queries to Location Based Services (LBS). To protect privacy, the user location must n...
212
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SIGMOD
2007
ACM
16 years 5 months ago
2007
ACM
An important problem for many location-based applications is the continuous evaluation of proximity relations among moving objects. These relations express whether a given set of ...
230
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SIGMOD
2007
ACM
16 years 5 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...
147
Voted
EDBT
2004
ACM
16 years 5 months ago
2004
ACM
The join operation, which combines tuples from multiple relations, is the most fundamental and, typically, the most expensive operation in database queries. The standard approach t...
164
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WWW
2010
ACM
15 years 12 months ago
2010
ACM
The World-Wide Web consists not only of a huge number of unstructured texts, but also a vast amount of valuable structured data. Web tables [2] are a typical type of structured in...