12. The method of claim 11 , wherein the one or more hits are received in a search result list, and wherein the hit visibility score is derived based on a position of the one or more hits in the search result list.
12. The method of claim 11 , wherein the one or more hits are received in a search result list, and wherein the hit visibility score is derived based on a position of the one or more hits in the search result list. 14. The method of claim 12 , wherein the hit visibility score is derived by inserting the position of the corresponding hit in a positional visibility function.