Adaptive optimal transport
Adaptive optimal transport
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自适应最优传输
DOI:
10.1093/imaiai/iaz008
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Tabak, Esteban G.
中科院分区:
文献类型:
--
作者:
Essid, Montacer;Laefer, Debra F.;Tabak, Esteban G.
An adaptive, adversarial methodology is developed for the optimal transport problem between two distributionsand, known only through a finite set of independent samplesand. The methodology automatically creates features that adapt to the data, thus avoiding reliance ona prioriknowledge of the distributions underlying the data. Specifically, instead of a discrete point-by-point assignment, the new procedure seeks an optimal mapdefined for all, minimizing the Kullback–Leibler divergence betweenand the target. The relative entropy is given a sample-based, variational characterization, thereby creating an adversarial setting: as one player seeks to push forward one distribution to the other, the second player develops features that focus on those areas where the two distributions fail to match. The procedure solves local problems that seek the optimal transfer between consecutive, intermediate distributions betweenand. As a result, maps of arbitrary complexity can be built by composing the simple maps used for each local problem. Displaced interpolation is used to guarantee global from local optimality. The procedure is illustrated through synthetic examples in one and two dimensions.
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DOI:
10.1093/imaiai/iax023
发表时间:
2018
期刊:
Information and Inference: A Journal of the IMA
影响因子:
--
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