Method for distributed tracking of approximate join size and related summaries
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United States of America Patent
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Jul 13, 2010
Grant Date -
Oct 11, 2007
app pub date -
Mar 29, 2006
filing date -
Mar 29, 2006
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Abstract
A method of distributed approximate query tracking relies on tracking general-purpose randomized sketch summaries of local streams at remote sites along with concise prediction models of local site behavior in order to produce highly communication-efficient and space/time-efficient solutions. A powerful approximate query tracking framework readily incorporates several complex analysis queries, including distributed join and multi-join aggregates and approximate wavelet representations, thus giving the first known low-overhead tracking solution for such queries in the distributed-streams model.
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