Hierarchical data compression and computation
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United States of America Patent
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May 31, 2016
Grant Date -
Mar 31, 2016
app pub date -
May 1, 2015
filing date -
Sep 30, 2014
priority date (Note) -
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Abstract
According to embodiments of the present invention, machines, systems, methods and computer program products for hierarchical compression of data are presented comprising creating a compression hierarchy of compression nodes, wherein each compression node is associated with a compression operation to produce compressed data. An output of any of the compression nodes may be compressed by another compression node or the same compression node. A path of one or more compression nodes is determined through said compression hierarchy based upon compression statistics to compress data, and the data is compressed by the compression nodes of the path. Various computational techniques are presented herein for manipulating the compression hierarchy to defer or reduce computation during query evaluation.
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