19. The computer-readable medium of claim 18 , wherein the two or more factors include a text-based similarity analysis and a non-text based similarity analysis.
19. The computer-readable medium of claim 18 , wherein the two or more factors include a text-based similarity analysis and a non-text based similarity analysis. 20. The computer-readable medium of claim 19 , wherein the non-text based similarity analysis includes a classification-based similarity analysis, an access-based similarity analysis, or a linked based similarity analysis.