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arXiv 2002.00818cs.LGcs.SCmath.ACstat.ML
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带边界条件的线性约束高斯过程

Linearly Constrained Gaussian Processes with Boundary Conditions

OWL University of Applied Sciences and Arts(OWL应用科学与艺术大学)

Markus Lange-Hegermann

摘要:

贝叶斯机器学习的一个目标是将先验知识编码到先验分布中,以有效地对数据进行建模。我们考虑线性偏微分方程系统的先验知识及其边界条件。我们构造多输出高斯过程先验与实现在这样的系统的解决方案集,特别是只有这样的解决方案可以表示为高斯过程回归。该构造是通过格罗布纳基完全算法的,并且它不使用任何近似。它通过回调建立了两个参数化组合的先验:第一个参数化微分方程系统的解决方案,第二个参数化遵守边界条件的所有函数。

英文摘要:

One goal in Bayesian machine learning is to encode prior knowledge into prior distributions, to model data efficiently. We consider prior knowledge from systems of linear partial differential equations together with their boundary conditions. We construct multi-output Gaussian process priors with realizations in the solution set of such systems, in particular only such solutions can be represented by Gaussian process regression. The construction is fully algorithmic via Gröbner bases and it does not employ any approximation. It builds these priors combining two parametrizations via a pullback: the first parametrizes the solutions for the system of differential equations and the second parametrizes all functions adhering to the boundary conditions.

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