Data compression using dictionary encoding
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United States of America Patent
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Jan 13, 2015
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app pub date -
Sep 23, 2013
filing date -
Sep 23, 2013
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Abstract
Embodiments relate to data compression using dictionary encoding. An aspect includes subdividing a table of uncompressed data into a first block and a second block of complete rows. Another aspect includes determining information about a frequency of occurrence of different values for each column of the first block. Another aspect includes selecting a row of the first block to be removed out of the first block using frequency of occurrence-information. Another aspect includes removing the a row out of the first block to form an updated first block and determining information about a frequency of occurrence of different values for each column of the updated first block. Another aspect includes deriving a dictionary containing code-words for encoding the values of the updated first block. Another aspect includes encoding the values of the updated first block based on the code-words. Another aspect includes adding the removed row to the second block.
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