Computational Information Geometry Wonderland

Non-extensive entropy has become widely popular in statistical physics. At its core is the so-called Tsallis entropy that generalizes the Boltzmann-Shannon entropy.
In fact, this family of parameterized entropies was historically first studied by researchers in information theory:

Quantification method of classification processes. Concept of structural a-entropy
from a 1967 paper of Jan Havrda and Frantisek Charvat.

Frank.