8. The method of claim 7 , wherein the computation of the derived measure uses entropy as the base measure.
8. The method of claim 7 , wherein the computation of the derived measure uses entropy as the base measure. 15. The method of claim 8 , wherein the relationships 
 A & B→A+B −( A|B ) 
 AB →( A|B )− B 
 A |( B+C )→( A|B )+( A|C ) are used in order that computing the derived measure from the data elements is performed making joint entropy computations and no conditional entropy computations; wherein symbols &, |, and  located between two attributes, represent, respectively, intersection of the two attributes, union of the two attributes, and an attribute excluding overlap with another attribute.