18. The method of claim 12 , wherein the confusion error matrix comprises a first difference between a first associated user response and a second recognized response and a second difference between a second associated user response and a second recognized response.
18. The method of claim 12 , wherein the confusion error matrix comprises a first difference between a first associated user response and a second recognized response and a second difference between a second associated user response and a second recognized response. 19. The method of claim 18 , further comprising predicting at least a second parameter based at least in part on the confusion error matrix.