9. The method of claim 1 wherein learning as a function of the one or more semantic groupings comprises learning from a multilevel grouping structure of the semantic groupings.
9. The method of claim 1 wherein learning as a function of the one or more semantic groupings comprises learning from a multilevel grouping structure of the semantic groupings. 10. The method of claim 9 wherein each semantic grouping for a given level of the multilevel grouping structure has a relative contribution for the given level, the relative contribution constraining the learning.