aggregate query processing in sensor networks

Robust and Efficient Aggregate Query Processing in

2008-5-8 · 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.

Get Price

Aggregate query processing in the presence of

2015-3-10 · Wireless sensor networks (WSNs) have received increasing attention in the past decade. In existing studies for query processing of WSNs, each sensor node measures environmental parameters such as temperature, light and humidity around its location.

Get Price

Robust and Efficient Aggregate Query Processing in

Request PDF Robust and Efficient Aggregate Query Processing in Wireless Sensor Networks Wireless sensor networks have been widely used in many applications, such as soil temperature monitoring

Get Price

Aggregate query processing in the presence of

Wireless sensor networks (WSNs) have received increasing attention in the past decade. In existing studies for query processing of WSNs, each sensor node measures environmental parameters such as

Get Price

(PDF) Routing and processing multiple aggregate

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-based routing.

Get Price

Query Processing in Sensor Networks cs.cmu.edu

2004-8-18 · Query Processing in Sensor Networks R ecent advances in computing tech-nology have led to the production of a new class of computing devices: the wireless, battery-powered, smart sensor. Traditional sensors deployed throughout buildings, labs, and equipment are

Get Price

Effective processing of continuous group-by

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. Approximate query processing in sensor networks is very useful due to the property of sensor networks.

Get Price

Interplay of processing and routing in aggregate query

2007-11-1 · Interplay of processing and routing in aggregate query optimization for sensor networks Niki Trigoni Alexandre Guitton Antonios Skordylis Computing Laboratory, University of Oxford, Oxford OX1 3QD, UK Abstract. This paper presents a novel approach to processing continuous aggre-gate queries in sensor networks, which lifts the assumption of tree

Get Price

Poster Abstract: Routing and Processing Multiple

2015-10-5 · 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.

Get Price

Processing Approximate Aggregate Queries in Wireless

2007-7-3 · routing [4, 26] and in-network query processing [14, 15, 16, 28]. A survey of the applications and the challenges that sensor networks introduce is presented in [10]. For monitoring queries that aggregate the observed values from a group of sensor nodes, [14] suggested the construction of a greedy aggregation tree that seeks to maximize the

Get Price

(PDF) Routing and processing multiple aggregate

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-based routing.

Get Price

Interplay of processing and routing in aggregate query

2008-6-23 · Interplay of processing and routing in aggregate query optimization for sensor networks Niki Trigoni Alexandre Guitton Antonios Skordylis Computing Laboratory, University of Oxford, Oxford OX1 3QD, UK Abstract. This paper presents a novel approach to processing continuous aggre-gate queries in sensor networks, which lifts the assumption of tree

Get Price

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

Get Price

Poster Abstract: Routing and Processing Multiple

2015-10-5 · 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.

Get Price

LNCS 3882 Processing Multiple Aggregation Queries in

2006-7-13 · Processing Multiple Aggregation Queries in Geo-Sensor Networks 23 SELECT AGG(readings) FROM SensorNetworkWHERE loc IN [x 1,x 2],[y 1,y 2] ; This expression means collecting (AGG(readings)), aggregated readings fromsensors in a logical relation, SensorNetwork,whoselocations(loc)arewithina region specified by [x1,x 2], [y 1,y 2] where x 1, x 2, y

Get Price

Aggregate Threshold Queries in Sensor Networks

2007-3-30 · Abstract: An important class of queries over sensor networks are network-wide aggregation queries. In this work we study a class of aggregation queries which we refer to as aggregate threshold queries. The goal of an aggregate threshold query is to continuously monitor the network and give a notification every time an aggregated value crosses a predetermined threshold value.

Get Price

Interplay of Processing and Routing in Aggregate

2008-1-5 · This paper presents a novel approach to processing continuous aggregate queries in sensor networks, which lifts the assumption of tree-based routing. 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 energy-efficient distributed

Get Price

CORE

Assembling regions for efficacious aggregate query processing in wireless sensor networks . By Apostolos Fertis. Abstract. The field of sensor networks is rapidly developing enabling us to deploy them to an unpredictable environment and draw diverse and interesting information from it.

Get Price

Another Outlier Bites the Dust: Computing Meaningful

2009-7-11 · sensor nodes often provide imprecise individual readings after a failure, i.e., they tend to fail dirty [10]. Thus, data processing applications using sensor networks must deal with information that is at times unreliable and unpredictable. In this paper, we present a novel query processing frame-work for aggregate queries over a network

Get Price

Research Article

aggregate query processing in wireless sensor networks, this which cannot participate in aggregate query processing, among the sensor nodes of the query region, and on the

Get Price

(PDF) Routing and processing multiple aggregate

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-based routing.

Get Price

IJA: An Efficient Algorithm for Query Processing in Sensor

2014-6-21 · Thus query processing over the nodes should be constrained because of their limitations. 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

Get Price

IJA: An Efficient Algorithm for Query Processing in

2011-1-28 · Accordingly, each sensor node in a sensor network is regarded as a distributed database system generating a data stream and has been studied as a sensor database . In query processing of sensor networks, the join operation costs much in sensor networks for correlating sensor readings like distributed database environments .

Get Price

Query Processing for Sensor Networks

2002-12-7 · layer for sensor networks; we call the component of the system that is located on each sensor node the query proxy. Architecturally, on the sensor node, the query proxy lies between the network layer and the application layer, and the query proxy provides higher-level services through queries. Given the view of a sensor network as a huge dis-

Get Price

Accuracy Vs. Lifetime: Linear Sketches for Approximate

2010-3-30 · aggregate queriesover sensor networksin anenergy{e cient manner. 1.1 Query Processing in Sensor Networks From the database perspective, in{network aggregation is a mode for evaluating aggregate queries over the sensor net-work. The common approach to (aggregate) query process-ing in sensor networks has two phases: the dissemination

Get Price

In-Network Execution of Monitoring Queries in Sensor

2008-3-15 · works on query processing in sensor networks have focused on aggregate queries such as COUNT, SUM and MAX, and have developed in-network aggregation techniques that sig-nificantly reduce the amount of data transmission. Some approximate query processing techniques [7, 10, 6, 5] were also proposed to reduce the cost of data collection while

Get Price

Another Outlier Bites the Dust: Computing Meaningful

2009-7-11 · sensor nodes often provide imprecise individual readings after a failure, i.e., they tend to fail dirty [10]. Thus, data processing applications using sensor networks must deal with information that is at times unreliable and unpredictable. In this paper, we present a novel query processing frame-work for aggregate queries over a network

Get Price

Processing Event-Monitoring Queries in Sensor Networks

2013-9-14 · Processing Event-Monitoring Queries in Sensor Networks Vassilis Stoumpos #*, Antonios Deligiannakis #2, Yannis Kotidis *3, Alex Delis 04 #Department ofInformatics, University ofAthens Athens, Greece [email protected] [email protected] [email protected] *Department ofInformatics, Athens University ofEconomics andBusiness Athens, Greece [email protected] Abstract-In this paper we

Get Price

Tinycasper: a privacy-preserving aggregate location

This demo presents a privacy-preserving aggregate location monitoring system, namely, TinyCasper, in which we can 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.In the first module, trusted wireless sensor nodes

Get Price
Stone Crushing Equipment Supplier Made In Italy Ultrafine Grinding Cone

Related Articles