9. The system of claim 1 wherein said dictionary contains a matrix wherein the columns of said matrix are atoms containing groups of feature representations and wherein the rows of said matrix contain feature vectors.
9. The system of claim 1 wherein said dictionary contains a matrix wherein the columns of said matrix are atoms containing groups of feature representations and wherein the rows of said matrix contain feature vectors. 10. The system of claim 9 wherein the number of atoms in said dictionary is fixed.