  Recently, Suyari has defined nonextensive information content measure with
unique class of functions which satisfies certain set of axioms. Nonextensive
entropy is then defined as the appropriate expectation value of nonextensive
information content [H. Suyari, Phys. Rev E 65 066118 (2002)]. In this comment
we show that the class of functions determined by Suyari's axioms is actually
wider than the one given by Suyari and we determine the class. Particularly, an
information content corresponding to Havrda-Charvat entropy satisfies Suyari's
axioms and does not belong to the class given by Suyari but belongs to our
class. Moreover, some of the conditions from Suyari's set of axioms are
redundant, and some of them can be replaced with more intuitive weaker ones. We
give a modification of Suyari's axiomatic system with these weaker assumptions
and define the corresponding information content measure.
