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• W4309794619 abstract "Data stream processing is an increasingly important topic due to the prevalence of smart devices and the demand for real-time analytics. Geo-distributed streaming systems, where cloud-based queries utilize data streams from multiple distributed devices, face challenges since wide-area network (WAN) bandwidth is often scarce or expensive. Edge computing allows us to address these bandwidth costs by utilizing resources close to the devices, e.g. to perform sampling over the incoming data streams, which trades downstream query accuracy to reduce the overall transmission cost. In this paper, we leverage the fact that correlations between data streams may exist across devices located in the same geographical region. Using this insight, we develop a hybrid edge-cloud system which systematically trades off between sampling at the edge and estimation of missing values in the cloud to reduce traffic over the WAN. We present an optimization framework which computes sample sizes at the edge and systematically bounds the number of samples we can estimate in the cloud given the strength of the correlation between streams. Our evaluation with three real-world datasets shows that compared to existing sampling techniques, our system could provide comparable error rates over multiple aggregate queries while reducing WAN traffic by 27-42%." @default.
• W4309794619 created "2022-11-29" @default.
• W4309794619 creator A5006850370 @default.
• W4309794619 creator A5053038544 @default.
• W4309794619 date "2022-09-01" @default.
• W4309794619 modified "2023-09-28" @default.
• W4309794619 title "Efficient Transmission and Reconstruction of Dependent Data Streams via Edge Sampling" @default.
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• W4309794619 doi "https://doi.org/10.1109/ic2e55432.2022.00013" @default.
• W4309794619 hasPublicationYear "2022" @default.
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