486 search results - page 82 / 98 » Evaluating Top-k Queries over Web-Accessible Databases |
205
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GIS
2007
ACM
16 years 2 months ago
2007
ACM
Accurate and efficient integration of geospatial data is an important problem with applications in areas such as emergency response and urban planning. Some of the key challenges ...
170
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SIGMOD
2007
ACM
16 years 1 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 ...
118
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FOCS
2003
IEEE
15 years 6 months ago
2003
IEEE
We give a complexity theoretic classification of homomorphism problems for graphs and, more generally, relational structures obtained by restricting the left hand side structure ...
122
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ER
2006
Springer
15 years 5 months ago
2006
Springer
When web servers publish data formatted in XML, only the current state of the data is (generally) published. But data evolves over time as it is updated. Capturing that evolution i...
120
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ER
2008
Springer
15 years 3 months ago
2008
Springer
During data warehouse design, the designer frequently encounters the problem of choosing among different alternatives for the same design construct. The behavior of the chosen desi...