RETROACTIVE SEARCH OF OBJECTS USING K-D TREE
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United States of America Patent
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Mar 19, 2015
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Aug 30, 2012
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Abstract
In one embodiment, a method includes receiving a set of one or more content objects to be blacklisted; retrieving a set of currently blacklisted content objects; and determining a delta set of content objects that includes the content objects in the set of content objects to be blacklisted that are not included in the set of currently blacklisted content objects. Each of the content objects of the delta set is represented as a vector that includes a number of first elements. The method also includes retrieving, for each content object of a third set of content objects, a representation of the content object as a vector that includes a number of second elements; and identifying each content object in the third set whose content substantially matches at least one content object of the delta set.
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