BIT-STRING KEY CLASSIFICATION/DISTRIBUTION APPARATUS, CLASSIFICATION/DISTRIBUTION METHOD, AND PROGRAM
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United States of America Patent
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app pub date -
Apr 26, 2012
filing date -
Oct 27, 2009
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Abandoned
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Abstract
When keys are to be classified into a plurality of blocks, to provide a classification method wherein the range of key values does not overlap and a method for distributing the classified keys by applying the art of a coupled-node tree. Keys are successively selected as classification keys from a key storage means holding the keys to be classified, and a classification tree, which is an application of a coupled-node tree, is generated by means of the classification keys, and the classification is done by making a correspondence between its leaf nodes and the keys to be classified into each of N blocks. The number of levels in the classification tree is constrained as a function of the block number N. A leaf node is extracted from the classification tree and the corresponding key is extracted as a classified key and distributed.
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