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arXiv 1710.08856math.PR
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近似条件分布

Approximating conditional distributions

Alberto Chiarini, Alessandra Cipriani, Giovanni Conforti

摘要:

在这篇文章中,我们讨论了一个通用的程序,以适应斯坦-陈方法来界定条件分布之间的距离的基本思想。从积分的部分公式(IBPF),我们推导出一个斯坦算子,其解决方案可以有界,例如,通过特设耦合。该方法在几个例子中提供了定量的界限:滤波方程,随机游动的桥之间的距离和桥之间的距离,以及近似它们的离散格式。此外,通过对一类随机游动桥的耦合构造,我们确定了采样器,并计算了其收敛到平衡点的显式表达式。

英文摘要:

In this article, we discuss the basic ideas of a general procedure to adapt the Stein-Chen method to bound the distance between conditional distributions. From an integration-by-parts formula (IBPF), we derive a Stein operator whose solution can be bounded, for example, via ad hoc couplings. This method provides quantitative bounds in several examples: the filtering equation, the distance between bridges of random walks and the distance between bridges and discrete schemes approximating them. Moreover, through the coupling construction for a certain class of random walk bridges we determine samplers, whose convergence to equilibrium is computed explicitly.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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