aggregate query processing sensor networks





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aggregate query processing sensor networks

Robust and Efficient Aggregate Query Processing in Wireless , Abstract Wireless sensor networks have been widely used in many applications, such as soil temperature monitoring for plant growth and abnormal event detection of ....Know More

Processing Multiple Aggregation Queries in Geo

To process aggregation queries issued through different sensors as access points in sensor networks, existing algorithms handle queries independently and perform in-network aggregation only at the query time As a result of ad-hoc and independent execution of queries, no partial result is sharable and reusable among the queri Consequently, scarce sensor ,...Know More

Aggregation Network

Chih-Chieh Hung, Chu-Cheng Hsieh, in Big Data Analytics for Sensor-Network Collected Intelligence, 2017 51 In-Network Aggregation Techniques and Data Integration Components In-network aggregation is an important concept in both big data management and WSNs In WSNs, as discussed in Section 22, many in-network aggregation approaches are well ,...Know More

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 ,...Know More

Curve Query Processing in Wireless Sensor Networks

26-11-2014 0183 32 Abstract Most existing query processing algorithms for wireless sensor networks WSNs can only deal with discrete valu However, since the monitored environment always changes continuously with time, discrete values cannot describe the environment accurately and, hence, may not satisfy a variety of query requirements, such as the queries ,...Know More

Aggregate Queries in Wireless Sensor Networks

Recently as efficient processing of aggregate queries for fetching desired data from sensors has been recognized as a crucial part, in-network aggregate query processing techniques are ,...Know More

Routing and Processing Multiple Aggregate Queries in ,

Routing and Processing Multiple Aggregate Queries in Sensor Networks Niki Trigoni Alexandre Guitton Antonios Skordylis Abstract 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...Know More

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...Know More

Sensor network query processor

A sensor network query processor SNQP , also called a sensorDB, is a user-friendly interface for programming and running applications which translates instructions from declarative programming language with high-level instructions to low-level instructions understood by the operating systemThe basic idea of SNQP is the addition of a layer modeling the WSN as a ,...Know More

Histogram and Other Aggregate Queries in Wireless Sensor ,

histogram to process other types of aggregate queries approximately and exactly Our experimental results using both synthetic and real data sets show that our proposed solutions are able to extend the lifespan of the WSN by up to one order of magnitude and at least double it 1 INTRODUCTION A typical Wireless Sensor Network WSN consists of...Know More

aggregate query processing in wireless sensor network

Robust and Efficient Aggregate Query Processing in 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...Know More

Processing Multiple Aggregation Queries in Geo

To process aggregation queries issued through different sensors as access points in sensor networks, existing algorithms handle queries independently and perform in-network aggregation only at the query time As a result of ad-hoc and independent...Know More

Processing approximate aggregate queries in wireless ,

01-12-2006 0183 32 Aggregate queries Approximation 1 Introduction Densely distributed sensor networks are used in a variety of monitoring applications ranging from measurements of meteorological data like temperature, pressure, humidity , noise levels, chemicals etc, to complex military vehicle surveillance and tracking applications...Know More

Aggregate Query Processing In Sensor Networks

Efficient processing of aggregation queries in sensor For continuous query processing in sensor networks much research has focused on Each internal node computes the partial aggregate by using its...Know More

aggregate query processing in wireless sensor network ,

Query Processing in Wireless Sensor Networks Semantic ScholarA WSN consists of a set of sensor nodes, which are small sensing devices with limited computational Cache-Based Periodic Query Optimization for Wireless Sensor Networks Synopsis diffusion for robust aggregation in sensor networks...Know More

Processing approximate aggregate queries in wireless ,

Processing approximate aggregate queries in wireless sensor networks Antonios Deligiannakisa, Yannis Kotidisb,, Nick Roussopoulosa aUniversity of Maryland, USA bDepartment of Information Systems and Analysis, AT T Labs-Research, PO Box 971, Florham Park, NI 07932-0971, USA...Know More

aggregate query processing sensor networks

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

Synopsis Diffusion for Robust Aggregation in Sensor Networks

Sensor Networks, Synopsis Di usion, Query Processing 1 INTRODUCTION In a large sensor network, aggregation queries often as-sume greater importance than individual sensor readings Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are...Know More

Aggregate Queries in Wireless Sensor Networks Semantic ,

Recently as efficient processing of aggregate queries for fetching desired data from sensors has been recognized as a crucial part, in-network aggregate query processing techniques are studied intensively in wireless sensor networks Existing representative in-network aggregate query processing techniques propose routing algorithms and data structures for processing ,...Know More

Aggregate query processing in the presence of duplicates ,

10-03-2015 0183 32 Sliding Window Aggregate Queries A sensor network can be considered as a source of stream data Then, the stream data can be broken into possibly overlapping partitions by specifying a window and computation can be carried out in each partition...Know More

Query Processing for Sensor Networks

we introduce our model of a sensor network, sensor data, and the class of queries that we consider in this paper We then demonstrate our algorithms to process simple aggregate queries with in-network aggregation Section 3 , and investigate the interaction between the routing layer and the query layer Section 4 We...Know More

Query Processing in Sensor Networks

Queries Data Distributed in network query processor 3 TinyDB or Cougar Wireless sensor network Query input Result collection 2 Query parsing Query optimization 1 Query result storage and display Figure 1 Architecture of a sensor network query processor Numbers indicate the sequence of steps involved in processing a query...Know More

an aggregate query processing system for wireless network

Aggregate Location Monitoring for Wireless Sensor 2009-3-5 components, wireless sensor network and aggregate query processor A third major component that is not shown in the figure is a resource-efficient sensor scheduler that is responsible on tuning a trade-off between energy and bandwidth consumption of the wireless sensor network and the accuracy of the ,...Know More

PDF Routing and processing multiple aggregate queries in ,

We present 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 evaluation plan...Know More

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 Jun-Ki Min a...Know More

A Sensor Network Data Aggregation Technique

consider the physical limitations of sensor networks 18 and 19 In addition, the TinyDB Project at Berkeley 15 conducted by Madden et al also investigates query processing techniques for sensor networks including an implementation of the system on the Berkeley motes and aggregation queri The basic approach used in both...Know More

Aggregate query processing in the presence of duplicates ,

We propose an efficient in-network aggregate algorithm when an object is detected multiply by several sensor nodWe extend our algorithm to ,...Know More

Robust and Efficient Aggregate Query Processing in ,

08-05-2008 0183 32 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...Know More

aggregate query processing in wireless sensor network

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....Know More