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Efficient Discretization of Optimal Transport

open access: yesEntropy, 2023
Obtaining solutions to optimal transportation (OT) problems is typically intractable when marginal spaces are continuous. Recent research has focused on approximating continuous solutions with discretization methods based on i.i.d. sampling, and this has
Junqi Wang, Pei Wang, Patrick Shafto
doaj   +4 more sources

A Physicist’s View on Partial 3D Shape Matching

open access: yesAlgorithms, 2023
A new algorithm is presented to compute nonrigid, possibly partial comparisons of shapes defined by unstructured triangulations of their surfaces.
Patrice Koehl, Henri Orland
doaj   +1 more source

Satellite Image Time Series Clustering via Time Adaptive Optimal Transport

open access: yesRemote Sensing, 2021
Satellite Image Time Series (SITS) have become more accessible in recent years and SITS analysis has attracted increasing research interest. Given that labeled SITS training samples are time and effort consuming to acquire, clustering or unsupervised ...
Zheng Zhang   +3 more
doaj   +1 more source

Optimal transport with discrete long-range mean-field interactions [PDF]

open access: yesBulletin of Mathematical Sciences, 2020
We study an optimal transport problem where, at some intermediate time, the mass is either accelerated by an external force field or self-interacting.
Jiakun Liu, Grégoire Loeper
doaj   +1 more source

Optimal Transport in Multilayer Networks for Traffic Flow Optimization

open access: yesAlgorithms, 2021
Modeling traffic distribution and extracting optimal flows in multilayer networks is of the utmost importance to design efficient, multi-modal network infrastructures.
Abdullahi Adinoyi Ibrahim   +2 more
doaj   +1 more source

Overrelaxed Sinkhorn–Knopp Algorithm for Regularized Optimal Transport

open access: yesAlgorithms, 2021
This article describes a set of methods for quickly computing the solution to the regularized optimal transport problem. It generalizes and improves upon the widely used iterative Bregman projections algorithm (or Sinkhorn–Knopp algorithm).
Alexis Thibault   +3 more
doaj   +1 more source

DecOT: Bulk Deconvolution With Optimal Transport Loss Using a Single-Cell Reference

open access: yesFrontiers in Genetics, 2022
Tissues are constituted of heterogeneous cell types. Although single-cell RNA sequencing has paved the way to a deeper understanding of organismal cellular composition, the high cost and technical noise have prevented its wide application.
Gan Liu, Xiuqin Liu, Liang Ma
doaj   +1 more source

Automatic Color Correction for Multisource Remote Sensing Images with Wasserstein CNN

open access: yesRemote Sensing, 2017
In this paper a non-parametric model based on Wasserstein CNN is proposed for color correction. It is suitable for large-scale remote sensing image preprocessing from multiple sources under various viewing conditions, including illumination variances ...
Jiayi Guo   +3 more
doaj   +1 more source

Modélisation de répartition d’élèves et délimitation de secteurs scolaires en milieu urbain

open access: yesBelgeo, 2017
In the midst of a school reform context and following its continuous population growth, the city of Lausanne had to re-examine various aspects of the management of its public schools.
Théophile Emmanouilidis
doaj   +1 more source

Wasserstein Dissimilarity for Copula-Based Clustering of Time Series with Spatial Information

open access: yesMathematics, 2023
The clustering of time series with geo-referenced data requires a suitable dissimilarity matrix interpreting the comovements of the time series and taking into account the spatial constraints.
Alessia Benevento, Fabrizio Durante
doaj   +1 more source

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