Abstract
In this paper we characterize the local structure of monotone and regular divergences, which include f-divergences as a particular case, by giving their Taylor expansion up to fourth order. We extend a previous result obtained by Čencov, using the invariant properties of Amari's α-connections.
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Corcuera, J.M., Giummolè, F. A Characterization of Monotone and Regular Divergences. Annals of the Institute of Statistical Mathematics 50, 433–450 (1998). https://doi.org/10.1023/A:1003569210573
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DOI: https://doi.org/10.1023/A:1003569210573