29. The computer program product of claim 21 , wherein identifying local term relationships between terms in the documents comprises: identifying a plurality of terms in a first document; determining a score for each of the identified terms; selecting a subset of the identified terms based on the scores of the identified terms; and identifying local term relationships among the selected subset of terms.
29. The computer program product of claim 21 , wherein identifying local term relationships between terms in the documents comprises: identifying a plurality of terms in a first document; determining a score for each of the identified terms; selecting a subset of the identified terms based on the scores of the identified terms; and identifying local term relationships among the selected subset of terms. 45. The computer program product of claim 29 , wherein selecting a subset of the identified terms based on the scores of the identified terms includes selecting a number of the highest scoring terms.