12. The method of claim 1 , wherein the kernel includes first and second reference modules, wherein the first reference module is specific to a first information domain and includes concepts relevant to the first information domain, and wherein the second reference module is specific to a second information domain and includes concepts relevant to the second information domain.
12. The method of claim 1 , wherein the kernel includes first and second reference modules, wherein the first reference module is specific to a first information domain and includes concepts relevant to the first information domain, and wherein the second reference module is specific to a second information domain and includes concepts relevant to the second information domain. 16. The method of claim 12 , wherein there is a difference between the first and second reference modules.