Our 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 phenomena in a monitored area. In many

Aggregate query processing in the presence of duplicates ...


Aggregate query processing in the presence of duplicates in wireless sensor networks. Author links open overlay panel Jun-Ki Min a Raymond T. Ng b Kyuseok Shim c. ... In WSNs with such sensors, an object may be detected by several sensor nodes and processing of aggregate queries (such as COUNT, SUM and AVERAGE) becomes problematic since an ...

Robust and Efficient Aggregate Query Processing in ...


Robust and Efficient Aggregate Query Processing in Wireless Sensor Networks Article in Mobile Networks and Applications 13(1-2):212-227 · April 2008 with 37 Reads How we measure 'reads'

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.

Efficient Iceberg Query Processing in Sensor Networks


Efficient Iceberg Query Processing in Sensor Networks Heejung Yang and Chin-Wan Chung∗ Department of Computer Science, KAIST, Daejeon 305-701, Republic of Korea ∗Corresponding author: [email protected] The iceberg query finds data whose aggregate values exceed a pre-specified threshold. To process

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

aggregate query processing in sensor networks


aggregate query processing sensor networks. IT Terminology / Dictionary - S for Script - Consp. SaaS is a software distribution model in which applications are hosted by a vendor or service provider and made available to customers over a network,

Processing Approximate Aggregate Queries in Wireless ...


CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): 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 their children and propagate the result to their own …

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 from their …

Poster Abstract: Routing and Processing Multiple Aggregate ...


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.

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


Academia.edu is a platform for academics to share research papers.

Outlier-Aware Data Aggregation in Sensor Networks


data processing applications using sensor networks must deal with information that is at times unreliable and unpredictable. The goal of our techniques is to provide a resilient query processing platform for aggregate queries over a network consisting of cheap, wireless sensor nodes that are prone to dirty data.

Interplay of processing and routing in aggregate query ...


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-

The Design and Evaluation of a Query Processing ...


The Design and Evaluation of a Query Processing Architecture for Sensor Networks by Ross Madden Doctor of Philosophy in Computer Science University of California, Berkeley Professor Michael J. Franklin, Chair With the advent of small, battery-powered, wireless computing and sensing technology, it is

Optimized Query Processing for Wireless Sensor Networks


Optimized Query Processing for Wireless Sensor Networks d a 1. I NTR ODUCI Recently sensor networks are used in various domains of computer applications. Infinite property and scalability of them give chance to getting around information in the highest resolution that impossible in previous technologies. They are used from military search to

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 ...

aggregate query processing in sensor networks


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 Supporting Spatial Aggregation in Sensor Network, .

A Location Based Aggregation Algorithm for Selective ...


PDT (a) leads to considerable gains in selective aggregate queries and (b) provides a close approximation of the mini-mal Steiner tree. 1. INTRODUCTION Data collection algorithms for sensor networks (SNs) exploit the fact that a sensor node consumes less energy for informa-tion processing than for communication. For aggregation op-

Processing approximate aggregate queries in wireless ...


Request PDF | Processing approximate aggregate queries in wireless sensor networks | Abstract In-network data aggregation has been recently proposed as an eective,means to reduce the number of ...

aggregate query processing in wireless sensor network


aggregate query processing in wireless sensor network. Sensor Networks, Wireless Sensor Network... Sensor Networks. AggreGate can be easily used to monitor multiple sensors and operate complex control logic. Let's say you operate a huge organic greenhouse. Chat Online.

Processing approximate aggregate queries in wireless ...


Processing approximate aggregate queries in wireless sensor networks ... This is a recursive procedure which ultimately results in the evaluation of the aggregate query at the Root node. After waiting for messages from its children nodes, the current node computes the new value of the partial aggregate based on the most current partial ...

Query Processing for Sensor Networks - Cornell University


3 Simple Aggregate Query Processing A simple aggregate query is an aggregate query without Group By and Having clauses, a very popular class of queries in sensor networks [21]. In this section we outline how to process such simple aggregate queries. Query processing strategies for more general queries are discussed in Section 5. 3.1 In-Network ...

aggregate quarry processing sensor networks


aggregate query processing in sensor networks YouTube. May 28, 2018· In the large network, 1681 (= 41 2) sensor nodes were distributed in a sensing field sized 16,000,000 m 2.aggregate query processing in sensor networksWireless Sensor Networks: Issues, Challenges.

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.


Top