Aggregate Query Processing In Sensor Networks

Sensor Scheduling for Aggregate Monitoring in Wireless ...

Wireless sensor network is characterized by their capa-bility of generating, processing, and communicating data. They are being explored in many scientific domains, e.g., ecology and oceanography. Most of these applications in-volve primarily data collection with in-network processing in which continuous aggregate queries are posed and pro-cessed.

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Routing and Processing Multiple Aggregate Queries in ...

This paper presents a query-driven approach to routing and processing continuous aggregate queries in sensor networks. Given a query workload and a special-purpose gateway node where results are expected, the query optimizer exploits query correlations in order to generate an energyefficient distributed evaluation plan.

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Accuracy Vs Lifetime: Linear Sketches for Appoximate ...

Sensor network applications rely heavily on aggregate queries. Queries are also considered a natural way for users to interact with the sensor network [23]. Therefore, several studies have been carried toward (aggregate) query processing in sensor networks [20,21,23]. The common approach to query processing in sensor networks has two phases.

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aggregate query processing sensor networks

On the Use of Histograms for Processing Exact Aggregate ... On the Use of Histograms for Processing Exact Aggregate Queries in Wireless Sensor Networks Khaled Ammar Mario A. Nascimento Department of Computing Science, University of Alberta, Canada {kammar, mn}@cs.ualberta.ca ABSTRACT Wireless Sensor Networks (WSNs) are typically used to col-lect values of some …

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Aggregate Location Monitoring for Wireless Sensor Networks ...

location-based query processing in wireless sensor networks. However, since all previous works in this area rely on users’ exact locations and/or identities, none of these works consider query processing over aggregate location data. Spatio-temporal histograms. Research efforts for spatio-temporal histograms aim to provide selectivity ...

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TinyCasper: A Privacy-Preserving Aggregate Location ...

This demo presents a privacy-preserving aggregate location monitoring system, namely, TinyCasper,inwhichwecan monitor moving objects in wireless sensor networks while preserving their location privacy. TinyCasper consists of two main modules, in-network location anonymization and aggregate query processing over anonymized locations.Inthe

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LNCS 3882 - Processing Multiple Aggregation Queries in …

Processing Multiple Aggregation Queries in Geo-Sensor Networks 21 sensors close to the users serving as access points.With existing techniques, in-dividual queries can be processed by forming independent routing trees with

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an aggregate query processing system for wireless network

Aggregate Query Processing In Sensor Networks. an aggregate query processing system for wireless network. aggregate query processing sensor works. In order to solve these problems and to enhance the efficiency of aggregate query processing in wireless sensor works, this paper proposes.

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aggregate query processing in sensor networks

Aggregate Quarry Processing Sensor Networks - , aggregate query processing in sensor networks The Design of an Acquisitional Query Processor For Sensor Networks ever, tend to view query processing in sensor . The Price of Validity in Dynamic Networks.

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aggregate query processing in wireless sensor network

aggregate query processing in wireless sensor network. Aggregate Queries in Wireless Sensor Networks 25 Jun 2012 , In order to solve these problems and to enhance the efficiency of aggregate query processing in wireless .

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Supporting Spatial Aggregation in Sensor Network …

network processing of the aggregation queries on the data generated in the sensor network. We use the ad-hoc query routing algorithm of TAG to disseminate our query into the network. Our spatial aggregate operators are compatible with the aggregate processing of TAG and easily portable to TinyDB. Zhao et al. in [9] introduce an architecture for ...

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Processing approximate aggregate queries in wireless ...

Request PDF on ResearchGate | Processing approximate aggregate queries in wireless sensor networks | Abstract In-network data aggregation has been recently proposed as …

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On the Use of Histograms for Processing Exact Aggregate ...

On the Use of Histograms for Processing Exact Aggregate Queries in Wireless Sensor Networks Khaled Ammar Mario A. Nascimento Department of Computing Science, University of Alberta, Canada {kammar, mn}@cs.ualberta.ca ABSTRACT Wireless Sensor Networks (WSNs) are typically used to col-lect values of some phenomena in a monitored area. In many

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aggregate query processing sensor networks

aggregate query processing sensor networks - machiibe. aggregate query processing sensor networks Mining is the extraction of valuable minerals or other geological materials from the earth, from an orebody, lode, vein, (coal) seam or reef, which forms the Contact Supplier; Aggregate Queries in Wireless Sensor Networks ...

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aggregate query processing in sensor networks

Sensor network applications rely heavily on aggregate queries. Queries are also considered a natural way for users to interact with the sensor network [23]. Therefore, several studies have been carried toward (aggregate) query processing in sensor networks [20,21,23]. The common approach to query processing in sensor networks has two phases ...

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aggregate query processing in sensor networks - biosante.be

aggregate query processing sensor networks Robust and Efficient Aggregate Query Processing in Wireless Sensor Networks Kebin Liu , Robust and efficient aggregate query processing in wireless sensor . The Design and Evaluation of a Query Processing , regarding query processing in sensor networks were a tremendous help Thanks also to John Chuang ...

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aggregate query processing in wireless sensor network

Processing approximate aggregate queries in wireless sensor... In-network data aggregation has been recently proposed as an effective means to reduce the number of messages exchanged in wireless sensor networks.

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1 Robust Computation of Aggregates in Wireless Sensor ...

tolerance, Graph theory, Aggregate, Data query, Stochastic processes. I. INTRODUCTION Sensor nodes are usually deployed in hostile environments. As a result, nodes and communica-tion links are prone to failure. This makes centralized algorithms undesirable in sensor networks using resource-limited sensor nodes [6], [4], [18], [2].

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(PDF) Processing approximate aggregate queries in wireless ...

Processing Approximate Aggregate Queries in Wireless Sensor Networks Antonios Deligiannakis a Yannis Kotidis b Nick Roussopoulos a a University of Maryland b AT&T Labs-Research Abstract In-network data aggregation has been recently proposed as an effective means to reduce the number of messages exchanged in wireless sensor networks.

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CAPS: Energy-Efficient Processing of Continuous …

CAPS: Energy-Efficient Processing of Continuous Aggregate Queries in Sensor Networks Wen Hu University of New South Wales National ICT Australia Limited ... efficient support of continuous aggregate queries in a sen-sor network. In the CAPS framework, the sink is able to

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Assembling regions for efficacious aggregate query ...

Assembling regions for efficacious aggregate query processing in wireless sensor networks ... In many cases, the whole set of values that are measured is not required by the query which is submitted to the network. The query asks for an aggregate over the measurements. The propagation of all measured values to a central computation point is ...

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aggregate query processing in sensor networks - vhf-venw.nl

aggregate query processing sensor networks. Processing approximate aggregate queries in wireless , In-network 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 ...

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Energy-Efficient Data Organization and Query Processing …

Recent sensor networks research has produced a class of data stor-age and query processing techniques called Data-Centric Storage that leverages locality-preserving distributed indexes to efficiently answer multi-dimensional range and range-aggregate queries. These distributed indexes offer a rich design space of a) logical decompo-sitions of ...

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Aggregate query processing in the presence of duplicates ...

Mar 10, 2015· 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 in-network aggregation problem.

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