Uniqueness of Nonextensive entropy under Renyi's Recipe
<|reference_start|>Uniqueness of Nonextensive entropy under Renyi's Recipe: By replacing linear averaging in Shannon entropy with Kolmogorov-Nagumo average (KN-averages) or quasilinear mean and further imposing the additivity constraint, R\'{e}nyi proposed the first formal generalization of Shannon entropy. Using this recipe of R\'{e}nyi, one can prepare only two information measures: Shannon and R\'{e}nyi entropy. Indeed, using this formalism R\'{e}nyi characterized these additive entropies in terms of axioms of quasilinear mean. As additivity is a characteristic property of Shannon entropy, pseudo-additivity of the form $x \oplus_{q} y = x + y + (1-q)x y$ is a characteristic property of nonextensive (or Tsallis) entropy. One can apply R\'{e}nyi's recipe in the nonextensive case by replacing the linear averaging in Tsallis entropy with KN-averages and thereby imposing the constraint of pseudo-additivity. In this paper we show that nonextensive entropy is unique under the R\'{e}nyi's recipe, and there by give a characterization.<|reference_end|>
@article{dukkipati2005uniqueness,
    title={Uniqueness of Nonextensive entropy under Renyi's Recipe},
    author={Ambedkar Dukkipati, M. Narasimha Murty and Shalabh Bhatnagar},
    journal={arXiv preprint arXiv:cs/0511078},
    year={2005},
    archivePrefix={arXiv},
    eprint={cs/0511078},
    primaryClass={cs.IT math.IT}
}