Geometry of probability simplex via optimal transport
Geometry of probability simplex via optimal transport
复制标题
通过最优传输的概率单纯形几何
DOI:
--
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Wuchen Li
中科院分区:
文献类型:
--
作者:
Wuchen Li
We study the Riemannian structures of the probability simplex on a weighted graph introduced by $L^2$-Wasserstein metric. The main idea is to embed the probability simplex as a submanifold of the positive orthant. From this embedding, we establish the geometry formulas of the probability simplex in Euclidean coordinates. The geometry computations on discrete simplex guide us to introduce the ones in the Fr{\'e}chet manifold of densities supported on a finite dimensional base manifold. Following the steps of Nelson, Bakery-{\'E}mery, Lott-Villani-Strum and the geometry of density manifold, we demonstrate an identity that connects the Bakery-{\'E}mery $\Gamma_2$ operator (carr{\'e} du champ it{\'e}r{\'e}) and Yano's formula on the base manifold. Several examples of differential equations in probability simplex are demonstrated.
影响因子:
1.3
作者:
S. Chow;L. Dieci;Wuchen Li;Haomin Zhou
通讯作者:
S. Chow;L. Dieci;Wuchen Li;Haomin Zhou
DOI:
10.1051/cocv/2018052
发表时间:
2019-12-05
影响因子:
1.4
作者:
Gangbo, Wilfrid;Li, Wuchen;Mou, Chenchen
通讯作者:
Mou, Chenchen
影响因子:
1.1
作者:
Chow, Shui-Nee;Li, Wuchen;Zhou, Haomin
通讯作者:
Zhou, Haomin