Patent ID: 7461063

Claim:
A computer system for classifying documents using a logistic regression algorithm, the computer system comprising: a computer readable storage medium storing computer instructions including: a logistic regression engine for applying the logistic regression algorithm to the documents to classify the documents; and a logistic regression model updating module for generating second logistic regression parameters updating first logistic regression parameters of the logistic regression algorithm, the first logistic regression parameters being generated based upon a first set of data, and the second logistic regression parameters being generated based upon a second set of data if the second set of data is coherent with a third set of data and the second logistic regression parameters not being generated based upon the second set of data if the second set of data is not coherent with the third set of data, the third set of data including external classifications of the documents and the second set of data including a combination of the first and the third sets of data, and wherein the second set of data is coherent with the third set of data if first and second changes to the first logistic regression parameters to generate the second logistic regression parameters, as indicated by the second and third sets of data, respectively, are consistent with each other, the logistic regression engine applying the logistic regression algorithm to the documents to classify the documents using the second logistic regression parameters if the second logistic regression parameters are generated based upon the second set of data and using the first logistic regression parameters if the second logistic regression parameters are not generated based upon the second set of data; and a processor for executing the computer instructions.