aggregate quarry processing in sensor networks

SIA: Secure Information Aggregation in Sensor Networks

tion aggregation in large sensor networks. In our framework certain nodes in the sensor network, called aggregators, help aggregating information requested by a query, which substantially reduces the communication overhead. By constructing efficient random sam-pling mechanisms and interactive proofs, we enable the user to

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CiteSeerX — Routing and Processing Multiple Aggregate ...

Tree-based routing is an energy-efficient technique for evaluating aggregate queries in sensor networks, since it enables partial aggregation of results in their way to the root. Tree construction is currently performed using simple flooding algorithms, data-centric reinforcement strategies or energy-aware route selection schemes.

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geosource efficient servcopper ores | Prominer (Shanghai ...

In wireless sensor networks, all nodes cooperate to maintain connectivity. These networks are power constrained as nodes operating with limited battery power .Recently it is criticized that the current WSN wastes energy due to an unoptimized network design, which does not consider the energy consumption of network elements such as routers and ...

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aggregate quarry processing sensor networks

aggregate query processing sensor networks coal mining office. 2010-12-1 They classify aggregates in sensor networks and define the structure of aggregates with a merging function f, an initializer i, and an evaluator e to compute aggregate queries in sensor networks.

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Interplay of processing and routing in aggregate query ...

gate queries in sensor networks, which lifts the assumption of tree-based rout-ing. Given a query workload and a special-purpose gateway node where results are expected, the query optimizer exploits query correlations in order to gen-erate an energy-efficient distributed evaluation plan. The proposed optimization algorithms identify common query sub-aggregates, and propose common rout-

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IJA: An Efficient Algorithm for Query Processing in Sensor ...

Due to the problems, the join operations in sensor networks are typically processed in a distributed manner over a set of nodes and have been studied. By way of example while simple queries, such as select and aggregate queries, in sensor networks have been addressed in the literature, the processing of join queries in sensor networks

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Processing Approximate Aggregate Queries in Wireless ...

Processing Approximate Aggregate Queries in Wireless Sensor Networks Antonios Deligiannakisa Yannis Kotidisb Nick Roussopoulosa aUniversity of Maryland bAT&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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Aggregate query processing in the presence of duplicates ...

Mar 10, 2015· Among the previous techniques for spatio-temporal data, some studies consider aggregate query processing, . However, most of the spatio-temporal aggregate query processing techniques utilize index structures such as MVSB-tree, MR-tree and MRA-tree to minimize CPU cost as well as disk I/O cost (See details in ). These studies assume that mobile objects are stored …

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Routing and processing multiple aggregate queries in ...

Home Conferences SENSYS Proceedings SenSys ''06 Routing and processing multiple aggregate queries in sensor networks. ARTICLE . Routing and processing multiple aggregate queries in sensor networks. Share on. Authors: Niki Trigoni. Birkbeck College, University of …

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Aggregate query processing in the presence of duplicates ...

In this paper, we study the effective processing of in-network aggregation queries in sensor networks when the duplicates of an identical object are detected by several sensor nodes.

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An Efficient Clustering–based Heuristic for Data Gathering ...

Sensor networks of the future are envisioned to revolutionize the paradigm of collecting and processing information in diverse environments. However, the severe energy constraints and limited computing resources of the sensors, present major challenges for such a vision to become a reality. We consider a network of energy–constrained sensors that

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Query Processing for Sensor Networks

pensive for sensor networks of non-trivial size since communication using the wireless medium consumes a lot of energy. Since sensor nodes have the ability to perform local computation, part of the computation can be moved from the clients and pushed into the sensor network, aggregating records, or eliminating ir-relevant records.

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Robust and Efficient Aggregate Query Processing in ...

Robust and Efficient Aggregate Query Processing in Wireless Sensor Networks . By S Jain, S Madden, C Intanagonwiwat, Y Yao and RE Kalman. Cite . BibTex; Full citation; Publisher: ''Springer Science and Business Media LLC'' DOI identifier: 10.1007/s11036 …

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TinyDB: An Acquisitional Query Processing System for ...

The basic approach of aggregate query processing in TinyDB is as follows: as data from an aggregation query flows up the tree, it is aggregated in-network according to the aggregation function and value-based partitioning specified in the query. 3.3.1AggregateQuery Syntax and Semantics. Consider a user who wishes tomonitortheoccupancyoftheconferenceroomsonaparticularfloorofabuild- ing.

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KPT: A Dynamic KNN Query Processing Algorithm for …

sensor network from any location. A query is transmitted from the query source to the sensor nodes or network loca-tions that contain the data needed to satisfy the query. The results (i.e., data collected at the sensor nodes) are then ag-gregated(ifallowed)andreturnedbacktothequerysource. The main requirement for query processing is to incur as

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TinyDB: An Acquisitional Query Processing System for ...

The basic approach of aggregate query processing in TinyDB is as follows: as data from an aggregation query flows up the tree, it is aggregated in-network according to the aggregation function and value-based partitioning specified in the query. 3.3.1 Aggregate Query Syntax and Semantics.

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Robust and Efficient Aggregate Query Processing in ...

May 08, 2008· Wireless sensor networks have been widely used in many applications, such as soil temperature monitoring for plant growth and abnormal event detection of industrial parameters. Among these applications, aggregate queries, such as SUM, COUNT, AVERAGE, MIN and MAX are often used to collect statistical data.

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(PDF) Routing and processing multiple aggregate queries in ...

Poster Abstract: Routing and Processing Multiple Aggregate Queries in Sensor Networks Niki Trigoni Alexandre Guitton Antonios Skordylis Birkbeck College, University of London, London WC1E 7HX, United Kingdom {niki,alexandre,adonis}@dcs.bbk.ac.uk Abstract We present a novel approach to processing continuous aggregate queries in sensor networks, which lifts the as- sumption of tree …

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CiteSeerX — Processing Approximate Aggregate Queries in ...

In-network data aggregation has been recently proposed as an e#ective 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 from …

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Aggregate Query Processing In Peer To Peer Abstract

aggregate quarry processing sensor networks. aggregate query processing in peer to peer networks with Home › Approximate Aggregation Techniques for Sensor Databases proximate in-network aggregation using small sketches Our contributions are tention paid to efficient query processing for aggregate queries [15 20 23] of a given file in a peer-to-peer network

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IJA: an efficient algorithm for query processing in sensor ...

Due to the problems, the join operations in sensor networks are typically processed in a distributed manner over a set of nodes and have been studied. By way of example while simple queries, such as select and aggregate queries, in sensor networks have been addressed in the literature, the processing of join queries in sensor networks remains to be investigated.

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Poster Abstract: Routing and Processing Multiple …

We present a novel approach to processing continuous aggregate queries in sensor networks, which lifts the as-sumption of tree-based routing. Given a query workload and a special-purpose gateway node where results are ex-pected, the query optimizer exploits query correlations in order to generate an energy-efcient distributed evaluation plan.

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1 Robust Computation of Aggregates in Wireless Sensor ...

For cooperative processing in a sensor network, the information of interest is not the data at an individual sensor node, but the aggregate statistics (aggregates) amid a group of sensor nodes [19], [15]. Possible applications using aggregates are the average temperature, the average gas concentration of a hazardous gas in an area, the average or minimum remaining battery life of

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(PDF) Performance Evaluation of a Simple Cluster-Based ...

In future ubiquitous networks, sensor nodes should collect various environmental data and parameters. ... aggregate it to reduce the amoun t of data ... e sensor nodes have limited processing and ...

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TinyCasper: A Privacy-Preserving Aggregate Location ...

niques designed for wireless sensor networks. On the other side, the aggregate query processing module is embedded in-side the server to support aggregate query processing over anonymized locations. TinyCasper system administrators can change the privacy requirement, i.e., k-anonymity re-quirement, at anytime. Finally, system users can issue snap-

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Assembling Regions for Efficacious Aggregate Query ...

Assembling Regions for Efficacious Aggregate Query Processing in Wireless Sensor Networks by Apostolos Fertis Diploma, Electrical and Computer Engineering (2003) National Technical University of Athens Submitted to the Department of Electrical Engineering and Computer Science in partial fulfillment of the requirements of

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(PDF) Optimal Energy Aware Clustering in Sensor Networks

Jul 01, 2002· The aggregate quarries selected for this study belong to the Eocene and the Jurassic rock in Tunisia. ... Data Processing in a wireless sensor network using …

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Aggregate Characteristics Jaw Crushers

Aggregate Characteristics Jaw Crushers . Aggregate Characteristics Jaw Crushers . Aggregate Gravel And Sand Manufacturers And Suppliers Crushed Aggregate Average Cost Per Ton Concrete Aggregate Grinding Machine Aggregate Equipment For Rent Aggregate Quarry Processing Sensor Networks Sand And Aggregate Suppliers George Small Scale Stone Crusher

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PDA: Privacy-preserving Data Aggregation in Wireless ...

energy. We refer to such in-network processing generically as data aggregation. In many sensor network applications, the designer is usually concerned with aggregate statistics such as SUM, AVERAGE, or MAX/MIN of data readings over a certain region or period. As a result, data aggregation in WSNs has received substantial attention. As sensor network applications expand to include increas-

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Wireless sensor network - Wikipedia

Wireless sensor network (WSN) refers to a group of spatially dispersed and dedicated sensors for monitoring and recording the physical conditions of the environment and organizing the collected data at a central location.WSNs measure environmental conditions like temperature, sound, pollution levels, humidity, wind, and so on. These are similar to wireless ad hoc networks in the sense that ...

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The Design of an Acquisitional Query Processor For Sensor ...

In this paper, we are concerned with query processing in sensor net-works. Researchers have noted the benefits of a query processor-like in-terface to sensor networks and the need for sensitivity to limited power and computational resources [27, 33, 41, 48, 34]. Prior systems, how-ever, tend to view query processing in sensor networks simply as a

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