Method and apparatus for constructing a compact similarity structure and for using the same in analyzing document relevance
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United States of America Patent
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Dec 30, 2008
Grant Date -
Jun 14, 2007
app pub date -
Dec 12, 2005
filing date -
Dec 12, 2005
priority date (Note) -
Expired
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Abstract
A computer-readable medium comprises data structure for providing information about levels of similarity between pairs of N documents. The data structure comprises a plurality of entries of similarity values representing levels of similarity for a plurality of pairs of the documents. Each of the similarity values represents a level of similarity of one document of a given pair relative to the other document of the given pair. The similarity value of each entry is greater than a threshold similarity value that is greater than zero. The plurality of similarity-value entries are fewer than N.sup.2-N in number if the similarity values are asymmetric with regard to document pairing, and the plurality of similarity-value entries are fewer than ##EQU00001## in number if the similarity values are symmetric with regard to document pairing. A method and apparatus for generating the data structure are described.
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