Entropic Regularization of Wasserstein Distance Between Infinite-Dimensional Gaussian Measures and Gaussian Processes
Entropic Regularization of Wasserstein Distance Between Infinite-Dimensional Gaussian Measures and Gaussian Processes
复制标题
无限维高斯测度与高斯过程之间 Wasserstein 距离的熵正则化
DOI:
10.1007/s10959-022-01165-1
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发表时间:
2022
影响因子:
0.8
通讯作者:
Ha Quang Minh
中科院分区:
文献类型:
--
作者:
Ryosuke Shibukawa;Shoichi Ishida;Kazuki Yoshizoe;Kunihiro Wasa;Kiyosei Takasu;Yasushi Okuno;Kei Terayama;Koji Tsuda;Ha Quang Minh
This work studies the entropic regularization formulation of the 2-Wasserstein distance on an infinite-dimensional Hilbert space, in particular for the Gaussian setting. We first present the minimum mutual information property, namely, the joint measures of two Gaussian measures on Hilbert space with the smallest mutual information are joint Gaussian measures. This is the infinite-dimensional generalization of the maximum entropy property of Gaussian densities on Euclidean space. We then give closed-form formulas for the optimal entropic transport plan, entropic 2-Wasserstein distance, and Sinkhorn divergence between two Gaussian measures on a Hilbert space, along with the fixed point equations for the barycenter of a set of Gaussian measures. Our formulations fully exploit the regularization aspect of the entropic formulation and are valid both insingularand innonsingularsettings. In the infinite-dimensional setting, both the entropic 2-Wasserstein distance and Sinkhorn divergence are Fréchet differentiable, in contrast to the exact 2-Wasserstein distance, which is not differentiable. Our Sinkhorn barycenter equation is new and always has a unique solution. In contrast, the finite-dimensional barycenter equation for the entropic 2-Wasserstein distance fails to generalize to the Hilbert space setting. In the setting of reproducing kernel Hilbert spaces, our distance formulas are given explicitly in terms of the corresponding kernel Gram matrices, providing an interpolation between the kernel maximum mean discrepancy and the kernel 2-Wasserstein distance.
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影响因子:
2
作者:
N. Gigli;Luca Tamanini
通讯作者:
Luca Tamanini
影响因子:
0.5
作者:
G. Larotonda
通讯作者:
G. Larotonda
影响因子:
3.7
作者:
["V. Panaretos
通讯作者:
["V. Panaretos
影响因子:
1.9
作者:
BAKER, CR
通讯作者:
BAKER, CR
DOI:
--
发表时间:
1958
期刊:
影响因子:
--
作者:
J. Feldman
通讯作者:
J. Feldman