2867 search results - page 529 / 574 » A Context Management System for Supporting Context-Aware App... |
288
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GIS
2005
ACM
16 years 7 months ago
2005
ACM
The R*-tree, as a state-of-the-art spatial index, has already found its way into commercial systems like Oracle. In this paper, we aim at improving query performance of the R*tree...
275
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GIS
2006
ACM
16 years 7 months ago
2006
ACM
Location information gathered from a variety of sources in the form of sensor data, video streams, human observations, and so on, is often imprecise and uncertain and needs to be ...
153
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WWW
2009
ACM
16 years 6 months ago
2009
ACM
We tackle the problem of disambiguating entities on the Web. We propose a user-driven scheme where graphs of entities ? represented by globally identifiable declarative artifacts ...
153
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WWW
2008
ACM
16 years 6 months ago
2008
ACM
Typical web sessions can be hijacked easily by a network eavesdropper in attacks that have come to be designated "sidejacking." The rise of ubiquitous wireless networks,...
266
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VLDB
2001
ACM
16 years 6 months ago
2001
ACM
The problem of answering queries using views is to find efficient methods of answering a query using a set of previously materialized views over the database, rather than accessin...