英文标题:
《Computational Methods for Martingale Optimal Transport problems》
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作者:
Gaoyue Guo and Jan Obloj
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最新提交年份:
2019
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英文摘要:
We establish numerical methods for solving the martingale optimal transport problem (MOT) - a version of the classical optimal transport with an additional martingale constraint on transport\'s dynamics. We prove that the MOT value can be approximated using linear programming (LP) problems which result from a discretisation of the marginal distributions combined with a suitable relaxation of the martingale constraint. Specialising to dimension one, we provide bounds on the convergence rate of the above scheme. We also show a stability result under only partial specification of the marginal distributions. Finally, we specialise to a particular discretisation scheme which preserves the convex ordering and does not require the martingale relaxation. We introduce an entropic regularisation for the corresponding LP problem and detail the corresponding iterative Bregman projection. We also rewrite its dual problem as a minimisation problem without constraint and solve it by computing the concave envelope of scattered data.
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中文摘要:
我们建立了求解鞅最优运输问题(MOT)的数值方法,该问题是经典最优运输问题的一个版本,对运输动力学具有附加鞅约束。我们证明了MOT值可以用线性规划(LP)问题来近似,该问题是由边缘分布的离散化和鞅约束的适当放松所导致的。针对一维问题,我们给出了上述方案收敛速度的界。我们还证明了仅在部分边际分布规范下的稳定性结果。最后,我们专门研究了一种特殊的离散格式,它保持了凸序,不需要鞅松弛。我们为相应的LP问题引入了熵正则化,并详细介绍了相应的迭代Bregman投影。我们还将其对偶问题改写为一个无约束的最小化问题,并通过计算散乱数据的凹包络来解决它。
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分类信息:
一级分类:Mathematics 数学
二级分类:Probability 概率
分类描述:Theory and applications of probability and stochastic processes: e.g. central limit theorems, large deviations, stochastic differential equations, models from statistical mechanics, queuing theory
概率论与随机过程的理论与应用:例如中心极限定理,大偏差,随机微分方程,统计力学模型,排队论
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一级分类:Mathematics 数学
二级分类:Optimization and Control 优化与控制
分类描述:Operations research, linear programming, control theory, systems theory, optimal control, game theory
运筹学,线性规划,控制论,系统论,最优控制,博弈论
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一级分类:Quantitative Finance 数量金融学
二级分类:Computational Finance 计算金融学
分类描述:Computational methods, including Monte Carlo, PDE, lattice and other numerical methods with applications to financial modeling
计算方法,包括蒙特卡罗,偏微分方程,格子和其他数值方法,并应用于金融建模
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