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• W2963496590 abstract "Sample coordination, where similar instances have similar samples, was proposed by statisticians four decades ago as a way to maximize overlap in repeated surveys. Coordinated sampling had been since used for summarizing massive data sets. The usefulness of a sampling scheme hinges on the scope and accuracy within which queries posed over the original data can be answered from the sample. We aim here to gain a fundamental understanding of the limits and potential of coordination. Our main result is a precise characterization, in terms of simple properties of the estimated function, of queries for which estimators with desirable properties exist. We consider unbiasedness, nonnegativity, finite variance, and bounded estimates. Since generally a single estimator can not be optimal (minimize variance simultaneously) for all data, we propose variance competitiveness, which means that the expectation of the square on any data is not too far from the minimum one possible for the data. Surprisingly perhaps, we show how to construct, for any function for which an unbiased nonnegative estimator exists, a variance competitive estimator." @default.
• W2963496590 created "2019-07-30" @default.
• W2963496590 creator A5006699796 @default.
• W2963496590 creator A5026385549 @default.
• W2963496590 date "2013-01-01" @default.
• W2963496590 modified "2023-09-27" @default.
• W2963496590 title "What You Can Do with Coordinated Samples" @default.
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• W2963496590 doi "https://doi.org/10.1007/978-3-642-40328-6_32" @default.
• W2963496590 hasPublicationYear "2013" @default.
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