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arXiv 1409.6445math.PR
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区域切换扩散的不变测度近似

Approximation of Invariant Measures for Regime-Switching Diffusions

Jianhai Bao, Jinghai Shao, Chenggui Yuan

摘要:

在本文中,我们关注的Euler-Maruyama格式的长时间行为与一系列的政权切换扩散过程。本文的主要贡献在于:(i)对于有限状态空间的状态切换扩散过程,当“平均条件”成立时,利用Perron-Frobenius定理证明了数值不变测度的存在唯一性;对于可逆马尔可夫链,当主特征值为正时,利用主特征值方法证明了数值不变测度的存在唯一性;(ii)利用有限划分方法和M矩阵理论,研究了具有可数状态空间的状态转换扩散过程.我们还发现,数值不变测度收敛于Wasserstein度量的基础。通过几个例子来证明我们的理论。

英文摘要:

In this paper, we are concerned with long-time behavior of Euler-Maruyama schemes associated with a range of regime-switching diffusion processes. The key contributions of this paper lie in that existence and uniqueness of numerical invariant measures are addressed (i) for regime-switching diffusion processes with finite state spaces by the Perron-Frobenius theorem if the "averaging condition" holds, and, for the case of reversible Markov chain, via the principal eigenvalue approach provided that the principal eigenvalue is positive; (ii) for regime-switching diffusion processes with countable state spaces by means of a finite partition method and an M-Matrix theory. We also reveal that numerical invariant measures converge in the Wasserstein metric to the underlying ones. Several examples are constructed to demonstrate our theory.

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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