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arXiv 1203.4597cs.LGstat.ML
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一种新的部分访问和噪声访问状态的训练算法

A Novel Training Algorithm for HMMs with Partial and Noisy Access to the States

Koc University(科奇大学)

Huseyin Ozkan, Arda Akman, Suleyman S. Kozat

摘要:

本文提出了一种新的估计算法的HMM的参数,以最好地考虑到观察到的数据。在该模型中,除了观测序列之外,我们还具有\emph{partial}和\emph{noisy}对作为边信息的隐藏状态序列的访问。这种访问可以被看作是隐藏状态的“部分标记”。此外,我们在联合框架中对边信息中可能的错误标记进行建模,并相应地导出相应的EM更新。在我们的模拟中,我们观察到,使用此边信息,我们大大提高了状态识别性能,高达70%,相对于基线算法定义的“可实现的裕度”。此外,我们的算法被证明是强大的训练条件。

英文摘要:

This paper proposes a new estimation algorithm for the parameters of an HMM as to best account for the observed data. In this model, in addition to the observation sequence, we have \emph{partial} and \emph{noisy} access to the hidden state sequence as side information. This access can be seen as "partial labeling" of the hidden states. Furthermore, we model possible mislabeling in the side information in a joint framework and derive the corresponding EM updates accordingly. In our simulations, we observe that using this side information, we considerably improve the state recognition performance, up to 70%, with respect to the "achievable margin" defined by the baseline algorithms. Moreover, our algorithm is shown to be robust to the training conditions.

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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