System and method for multi-resolution information filtering
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United States of America Patent
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Jun 11, 2013
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app pub date -
Apr 8, 2010
filing date -
Aug 13, 2009
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Abstract
A method for ranking a plurality of documents relevant to a user profile comprises determining a high resolution representation for the user profile, computing a high resolution representation for each document, calculating a rank for each document based on the high resolution representation of the document and the high resolution representation of the user profile, recalculating the rank for each document based on a lower resolution representation of the document and/or a lower resolution representation of the user profile when the rank of each document is not satisfactory, and outputting a number of the plurality of documents sorted by the rank of each document, when the rank is satisfactory. The high resolution representation can be a discrete wavelet transform. The lower resolution representation can be recalculated by averaging the values of the discrete wavelet transform. Outputting the number of documents can comprise displaying the documents on a device.
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