On the optimal map in the $ 2 $-dimensional random matching problem
On the optimal map in the $ 2 $-dimensional random matching problem
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关于$2$维随机匹配问题中的最优图
DOI:
10.3934/dcds.2019304
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Dario Trevisan
中科院分区:
文献类型:
--
作者:
L. Ambrosio;Federico Glaudo;Dario Trevisan
We show that, on a $2$-dimensional compact manifold, the optimal transport map in the semi-discrete random matching problem is well-approximated in the $L^2$-norm by identity plus the gradient of the solution to the Poisson problem $-\Delta f^{n,t} = \mu^{n,t}-1$, where $\mu^{n,t}$ is an appropriate regularization of the empirical measure associated to the random points. This shows that the ansatz of Caracciolo et al. (Scaling hypothesis for the Euclidean bipartite matching problem) is strong enough to capture the behavior of the optimal map in addition to the value of the optimal matching cost.
As part of our strategy, we prove a new stability result for the optimal transport map on a compact manifold.