3. The method of claim 1, wherein said step of generating the index term signature for each index term in the document corpus, comprises: generating a term vector based on each adjacent term within the predetermined number of adjacent terms; and combining the generated term vectors to form the index term signature.
3. The method of claim 1, wherein said step of generating the index term signature for each index term in the document corpus, comprises: generating a term vector based on each adjacent term within the predetermined number of adjacent terms; and combining the generated term vectors to form the index term signature. 7. The method of claim 3, wherein said predetermined number of adjacent terms both precede and succeed the index term.