Differential LSI space-based probabilistic document classifier
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United States of America Patent
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Apr 4, 2006
Grant Date -
Feb 20, 2003
app pub date -
May 8, 2001
filing date -
May 8, 2001
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Abstract
A computerized method for automatic document classification based on a combined use of the projection and the distance of the differential document vectors to the differential latent semantics index (DLSI) spaces. The method includes the setting up of a DLSI space-based classifier to be stored in computer storage and the use of such classifier by a computer to evaluate the possibility of a document belonging to a given cluster using a posteriori probability function and to classify the document in the cluster. The classifier is effective in operating on very large numbers of documents such as with document retrieval systems over a distributed computer network.
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