Gauge Freedom of Entropies on q-Gaussian Measures
Gauge Freedom of Entropies on q-Gaussian Measures
复制标题
用 q-高斯测度衡量熵的自由度
DOI:
10.1007/978-3-030-65459-7_6
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Takatsu Asuka
中科院分区:
文献类型:
--
作者:
Matsuzoe Hiroshi;Takatsu Asuka
Aq-Gaussian measure is a generalization of a Gaussian measure. This generalization is obtained by replacing the exponential function with the power function of exponent(). The limit caserecovers a Gaussian measure. On the set of allq-Gaussian densities over the real line with, escort expectations determine information geometric structures such as an entropy and a relative entropy. The ordinary expectation of a random variable is the integral of the random variable with respect to its law. Escort expectations admit us to replace the law by any other measures. One of the most important escort expectations on the set of allq-Gaussian densities is theq-escort expectation since this escort expectation determines the Tsallis entropy and the Tsallis relative entropy. The phenomenongauge freedom of entropiesis that different escort expectations determine the same entropy, but different relative entropies. In this chapter, we first introduce a refinement of theq-logarithmic function. Then we demonstrate the phenomenon on an open set of allq-Gaussian densities over the real line by using the refinedq-logarithmic functions. We write down the corresponding Riemannian metric.