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Query Processing in Sensor Networks

Queries Data Distributed in network query processor 3 TinyDB or Cougar Wireless sensor network Query input Result collection 2 Query parsing Query optimization 1 Query result storage and display Figure 1 Architecture of a sensor network query processor Numbers indicate the sequence of steps involved in processing a query

Aggregate query processing in the presence of duplicates

In addition when the sensing areas of sensor nodes are disjoint the coordinator of each sensor becomes itself and we perform traditional aggregate query processing Thus the problem we are considering is a generalization of the traditional innetwork aggregation problem

Data Aggregation and Query Processing in WSN

Data Aggregation and Query Processing in WSN Ayoni Mukherjee Sanjit Setua Abstract A wireless sensor network WSN has a wide range of important applications such as remote environment monitoring target tracking etc This has been enabled by the availability of sensors that are smaller cheaper and intelligent

aggregate query processing in sensor networks

Aggregate Query Processing In Sensor Networks 2004 · Processing approximate aggregate queries in wireless sensor networks query processing in the evaluation ofGet Price Kyuseok Shim s Home Pageintroduce Life is full of Serendipity In Korean 인생이란 아주 먼 옛날에 신이 나를 위해서 미리 준비해 놓은 소중하고

Optimized Query Processing for Wireless Sensor Networks

7 extends and implements a query based interface for sensor networks In sensor networks nodes are always involved in processing resource and serve limited energy Since central programs that requires bigger processing and connecting are not fit for these networks For example using a central application that all nodes send

an aggregate query processing system for wireless network

Processing Approximate Aggregate Queries In WirelessLargescale wireless sensor networks Several protocols have been proposed 7 15 24 Clusters are constructed to gather data locally before the data is forwarded to a server for final processing The clusters can form a hierarchical structure In this paper we consider aggregate monitoring queries over a set of sensors in a wireless sensor network

Processing approximate aggregate queries in wireless

Innetwork data aggregation has been recently proposed as an effective means to reduce the number of messages exchanged in wireless sensor networks Nodes of the network form an aggregation tree in which parent nodes aggregate the values received

Interplay of processing and routing in aggregate query

Abstract This paper presents a novel approach to processing continuous aggregate queries in sensor networks which lifts the assumption of treebased routing Given a query workload and a specialpurpose gateway node where results are expected the query optimizer exploits query correlations in order to gen

Poster Abstract Energy›Efcient Data Organization and

Recent sensor networks research has produced a class of data storage and query processing techniques called DataCentric Storage that leverages localitypreserving distributedindexes like DIMDIFS and GHT to efciently answer multidimensional range and rangeaggregate queries These distributed indexes offer a rich design