549 search results - page 27 / 110 » Data Expiration and Aggregate Queries |
110
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SENSYS
2004
ACM
15 years 5 months ago
2004
ACM
Wireless sensor networks offer the potential to span and monitor large geographical areas inexpensively. Sensors, however, have significant power constraint (battery life), makin...
AMW
2009
15 years 27 days ago
2009
Abstract. A Data Warehouse (DW) is a data repository that organizes and physically integrates data from multiple sources under special kinds of schemas. A DW is composed by a set o...
116
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COMAD
2008
15 years 1 months ago
2008
Answering aggregate queries like sum, count, min, max over regions containing moving objects is often needed for virtual world applications, real-time monitoring systems, etc. Sin...
103
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MDM
2009
Springer
15 years 6 months ago
2009
Springer
— The recent advances in wireless sensor technologies (e.g., Mica, Telos motes) enable the economic deployment of lightweight sensors for capturing data from their surrounding en...
119
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TC
2011
14 years 6 months ago
2011
— Processing the gathered information efficiently is a key functionality for wireless sensor networks. In this article, we study the time complexity, message complexity (number ...