6. The system of claim 1 , further comprising a restriction module configured to modify said profile to impose a restriction upon at least one of said available known reference sets based upon a restricting user input received by said user interface module.
6. The system of claim 1 , further comprising a restriction module configured to modify said profile to impose a restriction upon at least one of said available known reference sets based upon a restricting user input received by said user interface module. 7. The system of claim 6 , wherein said restriction is selected from the group of: a selection, a ranking, a filter, a semantic enrichment, a computational restriction, a fixed numerical modification, a linear numerical computation, and a non-linear numerical computation.