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arXiv 2202.01571math.OCcs.LGmath.AG
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熵正则化的环面几何

Toric Geometry of Entropic Regularization

Bernd Sturmfels, Simon Telen, François-Xavier Vialard, Max von Renesse

摘要:

熵正则化是求解大规模线性规划的一种方法。从几何学上讲,人们从伯奇点开始跟踪可行多面体与缩放复曲面变体的相交。我们比较这对数障碍的方法,与倒易线性空间,开始在分析中心。我们重新熵正则化不平衡的最优输运,我们开发使用的最佳圆锥耦合。我们计算相关复曲面簇的度,并探索像迭代缩放这样的算法。

英文摘要:

Entropic regularization is a method for large-scale linear programming. Geometrically, one traces intersections of the feasible polytope with scaled toric varieties, starting at the Birch point. We compare this to log-barrier methods, with reciprocal linear spaces, starting at the analytic center. We revisit entropic regularization for unbalanced optimal transport, and we develop the use of optimal conic couplings. We compute the degree of the associated toric variety, and we explore algorithms like iterative scaling.

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