Patent ID: 6513027
Filing Date: 2003-01-28
Classification: G06F,G06N

Abstract:
A method for automated generation of sub-categories from categories of a terminological knowledge base, said method comprising the steps of:storing a corpus of documents, wherein a document comprises a plurality of themes, and a theme identifies thematic content contained within said document; storing a knowledge base comprising a plurality of hierarchically arranged categories, wherein a subset of said categories of said knowledge base comprise dimensional categories; selecting a target category in said knowledge base to generate at least one new sub-category, said target category comprising a plurality of terms classified within said target category, such that one or more groups of terms associated with said target category are divided for association with said new sub-category; selecting, for each term classified within said target category, a plurality of themes from said corpus of documents; generating a plurality of dimensional category vectors, one for each term, by associating said themes selected for a term to a dimensional category; determining if one or more terminological groups of terms exist in said knowledge base by clustering said dimensional category vectors for each term; and selecting, as said new sub-category for said target category, one or more terminological groups discovered.