Robust Estimation of Latent Tree Graphical Models: Inferring Hidden States With Inexact Parameters
Robust Estimation of Latent Tree Graphical Models: Inferring Hidden States With Inexact Parameters
复制标题
潜在树图模型的鲁棒估计:推断具有不精确参数的隐藏状态
DOI:
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发表时间:
2011
影响因子:
2.5
通讯作者:
A. Sly
中科院分区:
文献类型:
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作者:
Elchanan Mossel;S. Roch;A. Sly
Latent tree graphical models are widely used in computational biology, signal and image processing, and network tomography. Here, we design a new efficient, estimation procedure for latent tree models, including Gaussian and discrete, reversible models, that significantly improves on previous sample requirement bounds. Our techniques are based on a new hidden state estimator that is robust to inaccuracies in estimated parameters. More precisely, we prove that latent tree models can be estimated with high probability in the so-called Kesten-Stigum regime with O(log2n) samples, where n is the number of nodes.
DOI:
10.1007/978-3-319-11433-0_3
发表时间:
2014
期刊:
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影响因子:
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作者:
Ben Mrad A
通讯作者:
Ben Mrad A