3. The article of manufacture of claim 1 wherein said feature vectors are converted using a TF-IDF (Term Frequency-Inverse Document Frequency) technique.
3. The article of manufacture of claim 1 wherein said feature vectors are converted using a TF-IDF (Term Frequency-Inverse Document Frequency) technique. 4. The article of manufacture of claim 3 wherein said TF-IDF technique employs a VSM (Vector Space Model) representation approach.