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- W2043958324 abstract "The rapid increase of data volumes makes sampling a crucial component of modern data management systems. Although there is a large body of work on database sampling, the problem of automatically determine the optimal sample for a given query remained (almost) unaddressed. To tackle this problem the authors propose a sample advisor based on a novel cost model. Primarily designed for advising samples of a few queries specified by an expert, the authors additionally propose two extensions of the sample advisor. The first extension enhances the applicability by utilizing recorded workload information and taking memory bounds into account. The second extension increases the effectiveness by merging samples in case of overlapping pieces of sample advice. For both extensions, the authors present exact and heuristic solutions. Within their evaluation, the authors analyze the properties of the cost model and demonstrate the effectiveness and the efficiency of the heuristic solutions with a variety of experiments." @default.
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- W2043958324 date "2013-10-01" @default.
- W2043958324 modified "2023-09-23" @default.
- W2043958324 title "Optimizing Sample Design for Approximate Query Processing" @default.
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- W2043958324 doi "https://doi.org/10.4018/ijkbo.2013100101" @default.
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