| 隐马尔可夫过程小波变换的参数估计 |
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| 引用本文： | 马洪,王茂华.隐马尔可夫过程小波变换的参数估计[J].四川大学学报(自然科学版),2005,42(1):1-4. |
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| 作者姓名： | 马洪 王茂华 |
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| 作者单位： | 四川大学数学学院,成都,610064;四川大学数学学院,成都,610064 |
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| 基金项目： | 国家自然科学基金(19971063) |
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| 摘 要： | 作者提出了一种新的方法来解决通过小波变换后的隐马尔可夫过程参数的计算问题．这个方法不必根据变换后的结果对系统参数进行重新估计，而只需利用变换后输出的小波系数直接来计算参数即可，避免了保留所有训练数据的繁琐复杂计算过程。
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| 关 键 词： | 隐马尔可夫过程 小波变换 模式识别 随机信号处理 |
| 文章编号： | 0490-6756(2005)01-0001-04 |
| 修稿时间： | 2003年1月7日 |
Wavelet Transformation of Hidden Markov Processes and Its Parametric Estimation |
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| MA Hong,WANG Mao-hua.Wavelet Transformation of Hidden Markov Processes and Its Parametric Estimation[J].Journal of Sichuan University (Natural Science Edition),2005,42(1):1-4. |
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| Authors: | MA Hong WANG Mao-hua |
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| Abstract: | In this paper, a new method to adapt the Hidden Markov Model (HMM) parameters is proposed when the original feature vector sequences extracted from handwritten characters are transformed by wavelet. By this method, readers are able to be free from the requirement of retraining the whole recognition parameters when the feature vectors are changed and makes it sufficient to adapt the parameters to the given impulse response of wavelet filter. The authors evaluate the performance of the proposed method, and compare it to that of the retrained HMM parameters based on the handwritten character recognition experiments. |
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| Keywords: | hidden Markov processes wavelet transformation pattern recognition stochastic signal processing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
