A Novel Method for Decoding Any High-Order Hidden Markov Model

被引:6
作者
Ye, Fei [1 ,2 ]
Wang, Yifei [3 ]
机构
[1] Nanjing Univ, Computat Expt Ctr Social Sci, Nanjing 210093, Jiangsu, Peoples R China
[2] Tongling Univ, Sch Math & Comp Sci, Tongling 244061, Anhui, Peoples R China
[3] Shanghai Univ, Dept Math, Shanghai 200444, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1155/2014/231704
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
This paper proposes a novel method for decoding any high-order hidden Markov model. First, the high-order hidden Markov model is transformed into an equivalent first-order hidden Markov model by Hadar's transformation. Next, the optimal state sequence of the equivalent first-order hidden Markov model is recognized by the existing Viterbi algorithm of the first-order hidden Markov model. Finally, the optimal state sequence of the high-order hidden Markov model is inferred from the optimal state sequence of the equivalent first-order hidden Markov model. This method provides a unified algorithm framework for decoding hidden Markov models including the first-order hidden Markov model and any high-order hidden Markov model.
引用
收藏
页数:6
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