  The diversity of the symbols of the information source is calculated
following the definition that entropy is the information loss and following a
new entropy-symbol similarity relation after the rejection of the Gibbs paradox
statement. Diversity in a range of 0 to 1, an index similar to Shannon's
redundancy, decreases with the increase in the species similarities. A pairwise
similarity formula has been defined and used to demonstrated that the diversity
expression gives the expected diversity. The higher entropy-higher similarity
relation leads to the higher information-higher diversity relation.
