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arXiv 1702.07150math.PR
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不精确连续时间马尔可夫链:保证误差界的有效计算方法

Imprecise Continuous-Time Markov Chains: Efficient Computational Methods with Guaranteed Error Bounds

Alexander Erreygers, Jasper De Bock

摘要:

不精确连续时间马尔可夫链是一种鲁棒的连续时间马尔可夫链,允许部分指定的时间依赖的参数。计算它们的推论需要求解非线性微分方程。由于该解没有通用的解析表达式,因此有效的数值逼近方法对该模型的适用性至关重要。本文从两个方面改进了Krak et al.(2016)的一致逼近方法,并提出了一种新的更有效的自适应逼近方法。对于遍历链,我们还提供了一种方法,使我们能够近似平稳分布到任何所需的最大误差。

英文摘要:

Imprecise continuous-time Markov chains are a robust type of continuous-time Markov chains that allow for partially specified time-dependent parameters. Computing inferences for them requires the solution of a non-linear differential equation. As there is no general analytical expression for this solution, efficient numerical approximation methods are essential to the applicability of this model. We here improve the uniform approximation method of Krak et al. (2016) in two ways and propose a novel and more efficient adaptive approximation method. For ergodic chains, we also provide a method that allows us to approximate stationary distributions up to any desired maximal error.

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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