Patent ID: 6535876
Filing Date: 2003-03-18
Classification: G06F,Y10S

Abstract:
A system for filtering documents, comprising:means for selecting a document profile and an expected document delivery ratio; means for scoring a reference set of documents according to said document profile; means for determining an assigned score threshold corresponding to said expected document delivery ratio; means for determining a utility function by calculating a utility for each of said documents in said reference set; means for determining a first utility threshold based on said utility function, wherein said first utility threshold (&thgr;opt) is the highest utility over said reference set; means for determining a second utility threshold based on said utility function, wherein said second utility threshold (&thgr;zero) is the highest utility below said first utility threshold that has a non-positive utility over said reference set; means for interpolating between said first utility threshold and said second utility threshold to determine an updated score threshold; and means for filtering incoming documents based on said updated score threshold.