Patent Document ID: 9336496
Application ID: 14108232

Base Claim:
1. A computer-implemented method for generating a reference set via clustering, comprising the steps of: obtaining a collection of unclassified documents; grouping the unclassified documents into clusters; selecting n-documents from each cluster, comprising: building a hierarchical tree of the clusters; and traversing the hierarchical tree to identify the n-documents, wherein one of the n-documents from each cluster is located closest to a center of that cluster; combining the selected n-documents as reference set candidates assigning a classification code to each of the reference set candidates; and grouping two or more of the reference set candidates as a reference set of classified documents, wherein the steps are performed by a suitably programmed computer.

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Claim 3:
3. A method according to claim 1 , further comprising: applying a size threshold to the reference set candidates; and clustering the reference set candidates until the size threshold is satisfied.