aggregate query processing in sensor networks
Aggregate query processing in the presence of duplicates ...
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 ...
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Robust and Efficient Aggregate Query Processing in ...
2008-5-8 · Wireless sensor networks have been widely used in many environmental monitoring applications [].In most of these applications, aggregate queries, such as SUM, COUNT, AVERAGE (AVG), MIN and MAX, are often used as statistics collected from sensors [12, 13, 22].However, it is known that data collected from sensors are often noisy for various reasons,
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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
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Aggregate query processing in the presence of duplicates ...
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.
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Assembling Regions for Efficacious Aggregate Query ...
2019-4-10 · 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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Interplay of processing and routing in aggregate query ...
2015-10-5 · 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 ...
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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.
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Interplay of Processing and Routing in Aggregate Query ...
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 ...
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Query Processing for Sensor Networks
2007-10-25 · less routing protocol, and distributed query processing. Initial simulation experiments with the ns-2 network simulator show the tradeoffs of our system. 1 Introduction Recent developments in hardware have enabled the widespread deployment of sensor networks consisting of small sensor nodes with sensing, computation, and communication ...
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Query Processing in Sensor Networks
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
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(PDF) Routing and processing multiple aggregate queries
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-
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Processing Approximate Aggregate Queries in Wireless ...
2007-7-3 · 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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Poster Abstract: Routing and Processing Multiple
2007-11-1 · 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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Interplay of Processing and Routing in Aggregate Query ...
Related workThere has also been a plethora of work on energy-aware routing [3,13,16] but without considering the interplay of routing and query processing. The TinyDB [8,9] and Cougar [14,15] projects investigate tree-based routing and scheduling techniques for processing aggregate queries like avg, count, sum, min and max in sensor networks.
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Interplay of Processing and Routing in Aggregate Query ...
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 ...
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Optimizing in-network aggregate queries in wireless
This study proposes a method of in-network aggregate query processing to reduce the number of messages incurred in a wireless sensor network. When aggregate queries are issued to the resource-const...
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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
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Query Processing for Sensor Networks
2007-10-25 · less routing protocol, and distributed query processing. Initial simulation experiments with the ns-2 network simulator show the tradeoffs of our system. 1 Introduction Recent developments in hardware have enabled the widespread deployment of sensor networks consisting of small sensor nodes with sensing, computation, and communication ...
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Energy-Efficient Aggregate Query Evaluation in Wireless ...
2014-5-29 · sensor networks. To process an aggregate query, in-network aggregation consists of distribution and collection phases [13]. In the distribution phase, a tree rooted at the base station and spanning all the sensor nodes is constructed. The construction of the routing tree is initiated from the base station (the
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Aggregate Location Monitoring for Wireless Sensor
2009-7-8 · 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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Research Article
2015-1-29 · of aggregate query processing in wireless sensor networks, this paper proposes Bucket-based Parallel Aggregation (BPA). BPA divides a query region into several cells according to the distribution of sensor nodes and builds a quadtree, and then processes
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Optimizing in-network aggregate queries in wireless
This study proposes a method of in-network aggregate query processing to reduce the number of messages incurred in a wireless sensor network. When aggregate queries are issued to the resource-const...
Read More
Query Processing for Sensor Networks
2007-10-25 · less routing protocol, and distributed query processing. Initial simulation experiments with the ns-2 network simulator show the tradeoffs of our system. 1 Introduction Recent developments in hardware have enabled the widespread deployment of sensor networks consisting of small sensor nodes with sensing, computation, and communication ...
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Aggregate Threshold Queries in Sensor Networks
2007-1-3 · over sensor networks where each sensor transmits a fixed number of bits. Tree-based algorithms are “one-shot”, i.e. calculate an aggregate on a “snapshot” of the data. An alternative to the tree approach is the multi-path ap-proach [2, 12]. In the multi-path approach, the sensors are partitioned into a set of rings.
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[PDF] Query processing in sensor networks | Semantic
A smart sensor query-processing architecture using database technology can facilitate deployment of sensor networks and discuss about query processing in sensor networks. Smart sensors are small wireless computing devices that sense information such as light and humidity at extremely high resolutions. A smart sensor query-processing architecture using database
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Aggregate Threshold Queries in Sensor Networks
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.
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Quick (and Dirty) Aggregate Queries on Low-Power WANs ...
2020 19th ACM/IEEE International Conference on Information Processing in Sensor Networks: 19th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN), 21-24 April 2020, Sydney, Australia 页码 277 - 288 摘要
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TinyDB: An Acquisitional Query Processing System for ...
2005-12-3 · processing opportunity that arises in sensor networks: the fact that smart sen- sors have control over where, when, and how often data is physically acquired (i.e., sampled ) and delivered to query processing operators.
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Energy-Efficient Multiple Routing Trees for Aggregate
2014-5-29 · Aggregate Query Evaluation in Sensor Networks Yuzhen Liu and Weifa Liang Department of Computer Science, The Australian National University Canberra, ACT 0200, Australia {yliu,wliang}@cs.anu.edu.au Abstract. In this paper we consider the problem of finding multiple routing trees in sensor networks for the evaluation of a class of aggre-
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Aggregate Location Monitoring for Wireless Sensor
2009-7-8 · 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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