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与观测信息相关的二阶隐马尔可夫模型的参数估计 被引量:4

Parametric Estimate of Second-Order Hidden Markov Models Relation with the Observations
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摘要 给出了在观测噪声和马尔可夫链不相互独立的条件下与观测信息相关的二阶隐马尔可夫模型的结构及改进模型的前向后向算法与Baum-Welch算法,并导出了改进模型的参数估计公式. This paper first describes the structure of second-order hidden Markov models relation with the observations on condition that observation noise is not independent of the Markov chain, and then researches the Forward-Backward Algorithm and the Baum-Welch algorithm of the modified models, and derives the update parametric estimation equations for the modified models.
作者 杜世平 陈涛
出处 《西南师范大学学报(自然科学版)》 CAS CSCD 北大核心 2006年第3期24-27,共4页 Journal of Southwest China Normal University(Natural Science Edition)
基金 国家自然科学基金资助项目(30300219) 四川农业大学生命科学与理学院科技创新基金资助项目(SLY200402)
关键词 二阶隐马尔可夫模型 前向-后向算法 BAUM Welch算法 参数估计 second-order hidden Markov models forward-backward algorithm~ Baum-Welch algorithm parametric estimation
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