Tài liệu Data Streams Models and Algorithms- P12 ppt

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Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. [...]... [7,38]), data from GPS enabled devices such as cars and phones and surveillance data are further examples Surveillance systems may include sophisticated sensors equipped with cameras and UAVs but nevertheless they produce streams of videos or streams of events In some applications, raw data is processed in the nodes to detect events, defined as some suitable function on the data, and only the streams. .. www.verypdf.com to remove this watermark DATA STREAMS: MODELS AND ALGORITHMS References [I] Ali, M H., Mokbel M F., Aref W G and Kame1 I (2005) Detectioin and Tracking of Discrete Phenomena in Sensor-Network Databases In Proceedings of the 17th International Conference on ScientiJic and Statistical Database Management [2] Aslam J., Butler Z., Constantin F., Crespi V.,Cybenko G and Rus D (2003) Tracking a Moving... [23] C Olston, J Jiang, and J Widom Adaptive filters for continuous queries over distributed data streams In ACM SIGMOD '03 International Conference on Management o Data, 2003 f [24] J Widom and R Motwani Query processing, resource management, and approximation in a data stream management system In CIDR, 2003 [25] R Wolff, K Bhaduri, and H Kargupta Local L2 thresholding based data f mining in peer-to-peer... they are considered as very valuable and attractive tools for many research and industrial applications Motes is one example of sensor devices developed by UC Berkeley and manufactured by Crossbow Technology Inc [13] lease purchase PDF Split-Merge on www.verypdf.com to remove this watermark 334 DATA STREAMS: MODELS AND ALGORITHMS Sensor observations form streams of data that are either processed in-situ... predicate is true and the predicate is false if it is very low Otherwise, the sensor is required to transmit more data and the model is updated In addition to updating the model with the new observations transmitted, the model is also updated over time with one or more transition models lease purchase PDF Split-Merge on www.verypdf.com to remove this watermark DATA STREAMS: MODELS AND ALGORITHMS t... Management of Data [I 61 Deshpande A., Guestrin C., Madden S R., Hellerstein J M and Hong W (2004) Model-Driven Data Acquisition in Sensor Networks In Proceedings of the 30th International Conference on Very Large Data Bases [17] Deshpande A., Guestrin C., Hong W and Madden S (2005) Exploiting Correlated Attributes in Acquisitional Query Processing In Proceedings of the 21st International Conference on Data. .. watermark 350 DATA STREAMS: MODELS AND ALGORITHMS Proceedings of the 17th International Conference on ScientiJic and Statistical Database Management [25] Hellerstein J M., Hong W., Madden S and Stanek K (2003) Beyond Average: Toward Sophisticated Sensing with Queries.International Workshop on Information Processing in Sensor Networks [26] Hwang I., Balakrishnan H., Roy K., Shin J., Guibas L and Tomlin... TAG and COUGAR framework can be reduced M e r through group-aware network configuration, where sensors belonging to same group are clustered along the same path, and by suppressing transmissions of measurements with temporal coherency lease purchase PDF Split-Merge on www.verypdf.com to remove this watermark 340 DATA STREAMS: MODELS AND ALGORITHMS Focusing on duplicate sensitive queries such as SUM and. .. applicable in certain sensor based applications In long running queries, streams from different sensors are continuously transmitted to other sensors where the query operator is applied on the data lease purchase PDF Split-Merge on www.verypdf.com to remove this watermark 342 DATA STREAMS: MODELS AND ALGORITHMS Since the rate at which the data is produced by the operator varies over time, a dynamic assignment... analysis Consequently data aggregation, data compression, modeling and online querying techniques need to be applied in-site or in-network to reduce communication across the network Furthermore, limitations of computational power and inaccuracy and bias in the sensor readings necessitate efficient data processing algorithms for sensor systems In addition, sensor nodes are prone to failures and aberrant behaviors

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