Introducing the Laplace approximation in particle filtering
Introducing the Laplace approximation in particle filtering
复制标题
在粒子过滤中引入拉普拉斯近似
DOI:
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
F. Gland
中科院分区:
文献类型:
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作者:
C. Musso;P. Quang;F. Gland
The situations where particle filtering fails (so-called weight degeneracy) can be detected with the asymptotic variance of the particle approximation. However, this asymptotic variance is in general intractable, and in the case of weight degeneracy, computing it by Monte Carlo sampling is inefficient. We propose to compute the asymptotic variance of the particle approximation via the Laplace method for multidimensional integrals. We present this method, and illustrate how it can be used to improve particle filtering robustness.