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Congressional samples for approximate answering of group-by queries
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OSDI '02 Proceedings of the 5th symposium on Operating systems design and implementationCopyright restrictions prevent ACM from being able to make the PDFs for this conference available for downloading
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VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
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IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Snapshot Queries: Towards Data-Centric Sensor Networks
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Information Networking. Towards Ubiquitous Networking and Services
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GSN '09 Proceedings of the 3rd International Conference on GeoSensor Networks
Computer Methods and Programs in Biomedicine
An energy-efficient skyline query processing method using priority-based bottom-up filtering
Proceedings of the 2009 International Conference on Hybrid Information Technology
Efficient pattern detection in extremely resource-constrained devices
SECON'09 Proceedings of the 6th Annual IEEE communications society conference on Sensor, Mesh and Ad Hoc Communications and Networks
Controlling performance trade-offs in adaptive network monitoring
IM'09 Proceedings of the 11th IFIP/IEEE international conference on Symposium on Integrated Network Management
Computing histograms of local variables for real-time monitoring using aggregation trees
IM'09 Proceedings of the 11th IFIP/IEEE international conference on Symposium on Integrated Network Management
Adaptive real-time monitoring for large-scale networked systems
IM'09 Proceedings of the 11th IFIP/IEEE international conference on Symposium on Integrated Network Management
Dynamic multiroot, multiquery processing based on data sharing in sensor networks
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Interplay of processing and routing in aggregate query optimization for sensor networks
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Region extreme value query in sensor networks
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Energy-efficient processing of spatio-temporal queries in wireless sensor networks
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PIKM '10 Proceedings of the 3rd workshop on Ph.D. students in information and knowledge management
Effective processing of continuous group-by aggregate queries in sensor networks
Journal of Systems and Software
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Information Systems
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Information Systems
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Distributed and Parallel Databases
Distributed adaptive top-k monitoring in wireless sensor networks
Journal of Systems and Software
Optimizing in-network aggregate queries in wireless sensor networks for energy saving
Data & Knowledge Engineering
Detecting proximity events in sensor networks
Information Systems
REQUEST: region-based query processing in sensor networks
DASFAA'11 Proceedings of the 16th international conference on Database systems for advanced applications: Part II
Practical data compression in wireless sensor networks: A survey
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WASA'06 Proceedings of the First international conference on Wireless Algorithms, Systems, and Applications
Energy-Efficient aggregate query evaluation in sensor networks
MSN'05 Proceedings of the First international conference on Mobile Ad-hoc and Sensor Networks
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DASFAA'10 Proceedings of the 15th international conference on Database Systems for Advanced Applications - Volume Part I
Fast track article: Using snapshot query fidelity to adapt continuous query execution
Pervasive and Mobile Computing
Aggregate node placement for maximizing network lifetime in sensor networks
Wireless Communications & Mobile Computing
Energy efficient ant colony algorithms for data aggregation in wireless sensor networks
Journal of Computer and System Sciences
A Grid-Based Hole Detection Scheme in WSNs
International Journal of Distributed Systems and Technologies
Network lifetime maximization for time-sensitive data gathering in wireless sensor networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
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ADC '11 Proceedings of the Twenty-Second Australasian Database Conference - Volume 115
On compressing data in wireless sensor networks for energy efficiency and real time delivery
Distributed and Parallel Databases
A Rate-Distortion Based Aggregation Method Using Spatial Correlation for Wireless Sensor Networks
Wireless Personal Communications: An International Journal
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In-network aggregation has been proposed as one method for reducing energy consumption in sensor networks. In this paper, we explore two ideas related to further reducing energy consumption in the context of in-network aggregation. The first is by influencing the construction of the routing trees for sensor networks with the goal of reducing the size of transmitted data. To this end, we propose a group-aware network configuration method that “clusters” along the same path sensor nodes that belong to the same group. The second idea involves imposing a hierarchy of output filters on the sensor network with the goal of both reducing the size of transmitted data and minimizing the number of transmitted messages. More specifically, we propose a framework to use temporal coherency tolerances in conjunction with in-network aggregation to save energy at the sensor nodes while maintaining specified quality of data. These tolerances are based on user preferences or can be dictated by the network in cases where the network cannot support the current tolerance level. Our framework, called TiNA, works on top of existing in-network aggregation schemes. We evaluate experimentally our proposed schemes in the context of existing in-network aggregation schemes. We present experimental results measuring energy consumption, response time, and quality of data for Group-By queries. Overall, our schemes provide significant energy savings with respect to communication and a negligible drop in quality of data.