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• W4380591142 abstract "Lossy compressors are increasingly adopted in scientific research, tackling volumes of data from experiments or parallel numerical simulations and facilitating data storage and movement. In contrast with the notion of entropy in lossless compression, no theoretical or data-based quantification of lossy compressibility exists for scientific data. Users rely on trial and error to assess lossy compression performance. As a strong data-driven effort toward quantifying lossy compressibility of scientific datasets, we provide a statistical framework to predict compression ratios of lossy compressors. Our method is a two-step framework where (i) compressor-agnostic predictors are computed and (ii) statistical prediction models relying on these predictors are trained on observed compression ratios. Proposed predictors exploit spatial correlations and notions of entropy and lossyness via the quantized entropy. We study 8+ compressors on 6 scientific datasets and achieve a median percentage prediction error less than 12%, which is substantially smaller than that of other methods while achieving at least a 8.8× speedup for searching for a specific compression ratio and 7.8× speedup for determining the best compressor out of a collection." @default.
• W4380591142 created "2023-06-15" @default.
• W4380591142 creator A5003772863 @default.
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• W4380591142 date "2023-06-14" @default.
• W4380591142 modified "2023-09-29" @default.
• W4380591142 title "Black-box statistical prediction of lossy compression ratios for scientific data" @default.
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• W4380591142 doi "https://doi.org/10.1177/10943420231179417" @default.
• W4380591142 hasPublicationYear "2023" @default.
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