Proceedings Template - WORD

[6] Y. Yao and J. Gehrke, "The cougar approach to in-network query processing in sensor networks" [7] S. Madden, M. J. Franklin, J. M. Hellerstein and W. Hong, "TAG: a tiny aggregation service for ad-hoc sensor networks", Proceedings of the Fifth Annual Symposium on Operating Systems Design and Implementation (OSDI), December 2002

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Scripts for Sensor Network Seminar – Data Management …

The cougar approach to in-network query processing in sensor networks.SIGMOD Record 31(3), 2002. [8] Y. Yao and J. Gehrke. Query processing in sensor networks. In …

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Routing Protocols in Wireless Sensor Network: A Survey

- Y. Yao and J. Gehrke, The cougar approach to in-network query processing in sensor networks", in SIGMOD Record, September 2002. - Y. Yu, D. Estrin, and R. Govindan, Geographical and Energy-Aware Routing: A Recursive Data Dissemination Protocol for Wireless Sensor Networks", UCLA Computer Science Department Technical Report, UCLA-CSD ...

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A note on efficient aggregate queries in sensor networks ...

Feb 12, 2007· The Cougar approach to in-network query processing in sensor networks ACM SIGMOD Record, 31 ( 3 ) ( 2002 ), pp. 9 - 18 CrossRef View Record in Scopus Google Scholar

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The Cougar Approach to In-Network Query Processing in ...

Cougar also employs in-network processing to reduce the total energy consumption, and it is more beneficial if a set of sensed data could be aggregated or fused into a single one that is more...

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Query Processing in Sensor Networks

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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The cougar approach to in-network query processing in ...

The cougar approach to in-network query processing in sensor networks . By Yong Yao and Johannes Gehrke. Get PDF (245 KB) Cite . BibTex; Full citation Publisher: Association for Computing Machinery (ACM) Year: 2005. DOI identifier: 10.1145/601858.601861. OAI identifier: ...

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Approximate Data Collection in Sensor Networks

[YG02] Yong Yao, J. E. Gehrke . The Cougar Approach to In-Network Query Processing in Sensor Networks. Sigmod Record, Volume 31, Number 3. September 2002. [LPC04] Philip Levis, Neil Patel, David Culler, and Scott Shenker. Trickle: A Self-Regulating Algorithm for Code Propagation and Maintenance in Wireless Sensor Networks.

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Query Processing in Wireless Sensor Network

query processing, a run time database is maintained about a specific type of query, i.e. how the nodes in a WSN will respond to a particular query. 2. Approach Towards Query Processing Much research on query processing for Wireless Sensor Networks has done in the past few years and two major.

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Routing in wireless sensor networks (Chapter 5 ...

Principles of Wireless Sensor Networks - December 2014. ... with compression in wireless sensor networks," in Proceedings of the Third International Symposium on Information Processing in Sensor Networks (IPSN), 2004. ... " The Cougar approach to in-network query processing in sensor networks ", SIGMOD Record, Vol. 31, ...

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(PDF) Power-aware in-network query processing for sensor ...

This enables a sensor to seize a data packet it is forwarding on behalf of another node, do in-network processing on this packet if applicable, and forward the newly generated packet up the path to the requesting node.The work on TinyDB [10,11] and Cougar …

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Data Management in Sensor Networks | SpringerLink

Yong Yao and Johannes Gehrke, The cougar approach to in-network query pro-cessing in sensor networks, SIGMOD Record, 31(3):9 18, 2002. CrossRef Google Scholar 23.

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Sensor Database System - Engineering

- The COUGAR System is a platform for query processing techniques over ad-hoc sensor networks - Treats a sensor network as a distributed database - A query optimizer is located on the gateway node to generate distributed query processing plans after receiving queries from outside - The COUGAR forms a clusters out of the sensors to allow

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Introduction to WSN - gatech.edu

[11] Feng Zhao and Leonidas Guibas, "Wireless Sensor Networks, an Information Processing Approach". [12] Yong Yao, J. E. Gehrke. The Cougar Approach to In-Network Query Processing in Sensor Networks. Sigmod Record, Volume 31, Number 3. September 2002. [13] Yong Yao, J. E. Gehrke. Query Processing in Sensor Networks.

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The cougar approach to in-network query processing in ...

Sep 01, 2002· Second, conservation of battery power is a major design factor, but a central system cannot make use of in-network programming, which trades costly communication for cheap local computation.In this paper, we introduce the Cougar approach to tasking sensor networks through declarative queries.

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Energy-optimized Sensor Data Processing

graphCQ [4] use sensor networks as simple data sources but do not address the problem of in-network processing. Conversely, in-network query processors (IN-QPs) such as TinyDB [5] and Cougar [6] focus only on the in-network part. Due to the limitations of sensor networks, INQPs usually support only primitive oper-ators, such as aggregations.

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In-Network Data Processing forWireless Sensor Networks

The cougar approach to in-network. query processing in sensor networks. ... Data streams generated in wireless sensor networks can be processed …

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Project Title - Cornell University

Jul 20, 2003· Wai Fu Fung, David Sun, and J. E. Gehrke. COUGAR: The Network is the Database. In Proceedings of the 2002 ACM Sigmod International Conference on Management of Data (SIGMOD 2002), Madison, Wisconsin, June 2002. Demo description. Yong Yao and J. E. Gehrke. The Cougar Approach to In-Network Query Processing in Sensor Networks.

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Operator Placement for In-Network Stream Query Processing

this approach may pose considerable unnecessary burden on network bandwidth. In-network query processing pushes some or all of the query execu-tion task to nodes lower in the hierarchy, in order to reduce overall network costs [15]. In general, find-ing the best point in the hierarchy at which to per-

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A Survey of Middleware for Sensor Network and Challenges

TinyDB [21,22] is a query processing middleware system based on TinyOS. TinyDB provides power-efficient in-network query processing system for collecting data from individual sensor nodes which reduces number of messages that must be sent. This results in reduced energy consumption. It has two different types of messages

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Distributed data management in sensor networks using ...

A database oriented approach to sensor networks that is primarily focusing on minimizing the communication overhead and represents all necessary base functions for distributed data management operations in a network-centric manner. Recent research in the domain of sensor networks demonstrated the strong need for network-centric data preprocessing in order to maximize the lifetime …

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Optimizing Energy-Efficient Query Processing in Sensor …

query). A sensor node has one or more sensing devices or sensors. 1 For simplicity, each predicate in a query is associated with a distinct sensor. To process a query, a node samples its sensors and checks if resulting readings satisfy the relevant predicates. In terms of query processing, the following procedures

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Active query forwarding in sensor networks

[16] present the COUGAR approach which treats sensor networks as distributed databases, with users tasking the network with declarative queries which are then converted by a front-end query processor into an efficient query plan for in-net-work processing. Similarly Govindan et al. also argue in [9] that sensor networks ought to be

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The Cougar approach to in-network query processing in ...

in-network query processing cougar approach sensor network physical world sensor network con-sisting sensor net-works assume sensor node seismic sensor central frontend offline querying major drawback user cannot health care large number widespread distribution envi-ronmental control com-putation capability small-scale sensor military environment

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| NCHU Institution Repository

[13] Jun-Zhao Sun, "QoS Aware Query Processing Algorithm forWireless Sensor Networks," JOURNAL OF COMPUTERS, VOL. 3, NO. 11, NOVEMBER 2008 [14] Y. Yao and J. E. Gehrke, "The Cougar approach to in-network query processing in sensor networks," ACM SIGMOD Record, vol. 31, no. 3,pp. 9–18, September 2002.

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Maximum Lifetime Continuous Query Processing in Wireless ...

In wireless sensor networks, the notion of in–network processing was first introduced by In- tanagonwiwat et al [18] to opportunistically eliminate duplicates in the context of directed diffusion. Gehrke and Madden et al [11, 15, 24] are among the first to integrate query processing and sensor

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IJA: An Efficient Algorithm for Query Processing in Sensor ...

In query processing of sensor networks, the join operation costs much in sensor networks for correlating sensor readings like distributed database environments . ... The cougar approach to in-network query processing in sensor networks. SIGMOD Record 2002, 31, 9–18. [Google Scholar]

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cougar_cougar_cougar____ …

The cougar approach to in-network query processing in sensor networks Cougar survival and source-sink structure on Greater Yellowstone's Northern Range † Sink populations in carnivore management: cougar demography and immigration in a hunted population.

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IJA: an efficient algorithm for query processing in sensor ...

Jan 28, 2011· Accordingly, each sensor node in a sensor network is regarded as a distributed database system generating a data stream and has been studied as a sensor database . In query processing of sensor networks, the join operation costs much in sensor networks for correlating sensor readings like distributed database environments .

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The Cougar Project: A Work-In-Progress Report

lection. Processing an aggregation query requires that data from a set of sensor nodes be routed to the site where the query was posed, with in-network aggregation on the route. The most natural way is along edges of a spanning tree that in some sense "embeds" the query plan. The feasi-bility and cost benefit of in-network aggregation ...

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Jinseok Yang - cseweb.ucsd.edu

[5] P. Bonnet et al, Towards sensor database systems., MDM 2001 [6] Y. Yao et al, The cougar approach to in-network query processing in sensor networks. SIGMOD 2002 [7] S. R. Maddenet al, Tinydb: an acquisitional query processing system for sensor networks. ACM …

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Benchmarking In-Network Sensor Query Processing

Nevertheless, benchmarking in-network sensor query processing requires new considerations on all of these five factors as well as on other factors. First, we identify the SUT. As an in-network sensor query processing system is networked embedded software, its components on a sensor node are tightly integrated with one another.

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PowerPoint Presentation

data is extracted from the sensor network in a predefined way and is stored in a database located on a unique front-end server. it periodically retrieves data from the sensor network and stores the data at a centralized database Approaches: Data Warehousing Approach: query processing takes place on the centralized database.

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