New%20Sampling-Based%20Summary%20Statistics%20for%20Improving%20Approximate%20Query%20Answers - PowerPoint PPT Presentation

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New%20Sampling-Based%20Summary%20Statistics%20for%20Improving%20Approximate%20Query%20Answers

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In large data recording and warehousing environments, it is often advantageous ... Then sample-size(S) = l-j ji = 1ci, and footprint(S) = l j ... – PowerPoint PPT presentation

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