Method for classifying unknown electronic documents based upon at least one classificaton

摘要

A classification system includes a signature-based duplicate detector and an inductive classifier that share attribute information. To perform the duplicate detection and the classification, the duplicate detector and inductive classifier are first initialized by generating a lexicon of attributes for the duplicate detector and a classification model for the classifier. To develop a classification model, a training set of documents of known class are used by the classifier to determine the attributes of the documents that are most useful in classifying an unknown document. The model is developed from these attributes. Attribute information containing the attributes determined by the classifier is then passed to the duplicate detector and the duplicate detector uses the attribute information to generate the lexicon of attributes.

主权项

1. A method comprising:
receiving an electronic document; analyzing, using at least one processor, the electronic document to extract a number of first attributes from the electronic document, the number of first attributes selected from a first attribute set; obtaining a first classification output for the electronic document based upon the number of first attributes extracted from the electronic document; if the first classification output for the electronic document is above a first threshold, withholding delivery of the electronic document; if the first classification output for the electronic document is below the first threshold, analyzing the electronic document to extract a number of second attributes from the electronic document, the number of second attributes selected from a second attribute set, and obtaining a second classification output for the electronic document based upon the number of second attributes extracted from the electronic document; if the second classification output for the electronic document is above a second threshold, withholding delivery of the electronic document; and if the second classification output for the electronic document is below the second threshold, delivering the electronic document.