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gregate query processing wireless sensor networ

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, such as sensing device

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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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Processing approximate aggregate queries in wireless ...

2006-12-1  Consider a node Root, which initiates a continuous query over the values observed by a set of data sources, and requests that the results of this query be reported to it at regular time periods.The time interval between two such consecutive time periods is referred to as the epoch of the query. The continuous query is disseminated through the network in search of the sensor nodes that collect ...

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Assembling Regions for Efficacious Aggregate Query ...

2021-7-5  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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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-constrained wireless sensor network, it is important to efficiently perform these queries.

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(PDF) Assembling regions for efficacious aggregate query ...

Wireless sensor networks generate a vast amount of data. This data, however, must be sparingly extracted to conserve energy, usually the most precious resource in battery-powered sensors.

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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 bATT 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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TinyQP: A Query Processing System in Wireless Sensor

2013-6-14  TinyQP provides the in-network processing of several complex queries including real time query, historical query, event detection, aggregate query, top-k query, etc. TinyQP displays the network topology in a graphical way. TinyQP allows the user to remotely execute query

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Optimized Query Processing for Wireless Sensor Networks

2012-11-18  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

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Query Processing in Sensor Networks

2004-8-18  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.

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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 bATT 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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Energy-Efficient Aggregate Query Evaluation in Sensor

In wireless sensor networks, data processing and computation consume much less energy than data communication. The most common data aggregation model [55,78,101,106, 111] builds a spanning tree ...

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Aggregate Threshold Queries in Sensor Networks - IEEE ...

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.

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Aggregate Location Monitoring for Wireless Sensor

Location monitoring systems are used to detect human activities and provide monitoring services, e.g., aggregate queries. In this paper, we consider an aggregate location monitoring system where wireless sensor nodes are counting sensors that are only capable of detecting the number of objects within their sensing areas. As traditional query processors rely on the knowledge of users' exact ...

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Optimized Query Processing for Wireless Sensor Networks

2012-11-18  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

More

TinyCasper: A Privacy-Preserving Aggregate Location ...

2008-10-26  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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Sensor Networks, Wireless Sensor Network Management

Wireless Sensor Network Management. Connection of sensors, hubs and gateways using standard or custom communication protocol drivers. Alerting, charting, reporting, trend prediction and other data analysis tools. Transport network independence. Customizable network geography and topology visualization. Data aggregation and fusion.

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Complex query processing in wireless sensor networks ...

In Proceedings of the 2nd International Workshop on Information Processing in Sensor Networks, April 2003. Google Scholar Digital Library; Madden, S., Szewczyk, R., Franklin, M. J. and Culler, D. (2002) 'Supporting Aggregate Queries Over Ad-Hoc Wireless Sensor Networks.' In Proceedings IEEE Workshop on Mobile Computing Systems and Applications ...

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Query Processing in Sensor Networks

2004-8-18  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.

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Continuous Quantile Query Processing in Wireless

2016-3-30  Continuous Quantile Query Processing in Wireless Sensor Networks Johannes Niedermayer 1, Mario A. Nascimento 2, Matthias Renz 1, Peer Kröger 1 and Hans-Peter Kriegel 1 1 Institute for Computer Science, LMU, Munich, Germany 2 Dept. of Computing Science, University of Alberta, Canada {niedermayer, renz, kroeger, kriegel}@cip.i.lmu

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Complex query processing in wireless sensor networks ...

In Proceedings of the 2nd International Workshop on Information Processing in Sensor Networks, April 2003. Google Scholar Digital Library; Madden, S., Szewczyk, R., Franklin, M. J. and Culler, D. (2002) 'Supporting Aggregate Queries Over Ad-Hoc Wireless Sensor Networks.' In Proceedings IEEE Workshop on Mobile Computing Systems and Applications ...

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Aggregate Threshold Queries in Sensor Networks - IEEE ...

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.

More

Aggregate Location Monitoring for Wireless Sensor

Location monitoring systems are used to detect human activities and provide monitoring services, e.g., aggregate queries. In this paper, we consider an aggregate location monitoring system where wireless sensor nodes are counting sensors that are only capable of detecting the number of objects within their sensing areas. As traditional query processors rely on the knowledge of users' exact ...

More

TinyCasper: A Privacy-Preserving Aggregate Location ...

2016-5-21  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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Energy-Efficient Aggregate Query Evaluation in Wireless ...

2014-5-29  nodes, so has been used as a paradigm in energy-constrained wireless 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.

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QoS-aware query processing for wireless sensor networks

A Wireless Sensor Network (WSN) is a collection of sensor nodes, spatially deployed in an ad hoc fashion, which performs distributed sensing tasks in a collaborative manner, without relying on any underlying infrastructure support. WSNs have usually been treated as passive networks, where sensors measure some physical phenomena periodically, or detect some events, and then send the data thus ...

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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 ...

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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Continuous Quantile Query Processing in Wireless

2016-3-30  Continuous Quantile Query Processing in Wireless Sensor Networks Johannes Niedermayer 1, Mario A. Nascimento 2, Matthias Renz 1, Peer Kröger 1 and Hans-Peter Kriegel 1 1 Institute for Computer Science, LMU, Munich, Germany 2 Dept. of Computing Science, University of Alberta, Canada {niedermayer, renz, kroeger, kriegel}@cip.i.lmu

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Robust Management of Outliers in Sensor Network

2013-9-14  aggregation process. These nodes are called witnesses and provide a form of positive feedback to the user that may help him better comprehend the set of measurements that shape the result to its ag-gregate query. Our contributions are as follows: • We present a new resilient execution paradigm for comput-ing aggregate queries in sensor networks.

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