3. The system of claim 1 , wherein the processor is further configured to: determine concept voting scores, each concept voting score indicating the prevalence of a concept being tagged to individual documents of the list of result documents.
3. The system of claim 1 , wherein the processor is further configured to: determine concept voting scores, each concept voting score indicating the prevalence of a concept being tagged to individual documents of the list of result documents. 4. The system of claim 3 , wherein the concept voting score indicates how frequently a concept is associated with result documents in the list of result documents.