Koki Kazama

collaborators

4 papers

cs.IT2025

Alternating Optimization Approach for Computing $I^\pm$ -Mutual Information and $I^\pm$ -Capacity

Akira Kamatsuka, Koki Kazama, Takahiro Yoshida

This study presents alternating optimization (AO) algorithms for computing $I^\pm$ -mutual information ( $I^\pm$ -MI) and $I^\pm$ -capacity based on variational characterizations of $I^\pm$ -MI usi…

cs.IT2024

A Variational Characterization of $H$ -Mutual Information and its Application to Computing $H$ -Capacity

Akira Kamatsuka, Koki Kazama, Takahiro Yoshida

$H$ -mutual information ( $H$ -MI) is a wide class of information leakage measures, where $H = (I^\cdot, F)$ is a pair of monotonically increasing function $I^\cdot$ and a concave function $F$ , w…

cs.IT2024

A New Algorithm for Computing $I^\pm$ -Capacity

Akira Kamatsuka, Koki Kazama, Takahiro Yoshida

The problem of computing $I^\pm$ -capacity for $I^\pm > 1$ is equivalent to that of computing the correct decoding exponent. Various algorithms for computing them have been proposed, such a…

cs.IT2024

New Algorithms for Computing Sibson Capacity and Arimoto Capacity

Akira Kamatsuka, Yuki Ishikawa, Koki Kazama +1

The Sibson and Arimoto capacity, which are based on the Sibson and Arimoto mutual information (MI) of order Î±, respectively, are well-known generalizations of the channel capacity…

Alternating Optimization Approach for Computing I^±-Mutual Information and I^±-Capacity

A Variational Characterization of H-Mutual Information and its Application to Computing H-Capacity

A New Algorithm for Computing I^±-Capacity

New Algorithms for Computing Sibson Capacity and Arimoto Capacity

Alternating Optimization Approach for Computing $I^\pm$ -Mutual Information and $I^\pm$ -Capacity

A Variational Characterization of $H$ -Mutual Information and its Application to Computing $H$ -Capacity

A New Algorithm for Computing $I^\pm$ -Capacity