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基于隐马尔可夫链的广播新闻分割分类 被引量：7

HIDDEN MARKOV MODEL BASED BROADCAST NEWS SEGMENTATION AND CLASSIFICATION
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摘要 提出了使用具有模拟随机时序数据良好能力的隐马尔可夫链来完成广播新闻分割分类的算法 .首先使用含隐藏语义状态的隐马尔可夫链把原始广播新闻粗略分割分类成开始 /结束和语音两部分 ,其次应用 3个隐马尔可夫链 ,按照最大似然概率法把语音片段预识别为主持人介绍、广告和天气预报 ,最后由语义变化速率识别出新闻现场报道 ,完成广播新闻的精细分割分类任务 . A new HMM-based segmentation and classification algorithm is proposed for the segmentation and classification of broadcast news since HMM can simulate stochastic time series data quite well. Firstly, by using an HMM, which has two hidden semantic states, the raw broadcast news is coarse-grained segmented into two parts: prelude/finale and speech. Then three HMMs are used to pre-classify speech clips as anchorpersons, commercials and weather forecasts based on maximum probability. Finally the change of semantic rate is checked to identify the detailed report.
作者 庄越挺 毛祎 吴飞 潘云鹤
机构地区 浙江大学人工智能研究所
出处 《计算机研究与发展》 EI CSCD 北大核心 2002年第9期1057-1063,共7页 Journal of Computer Research and Development
基金 教育部博士点科研基金 ( 2 0 0 10 335 0 49) 教育部优秀年轻教师基金 高等学校骨干教师资助计划资助
关键词 隐马尔可夫链 广播新闻 音频片段特征 阈值 分割分类算法 音频信号 语音识别 多媒体 broadcast news, clip features, segmentation and classification, threshold, hidden Markov model
分类号 TN912.34 [电子电信—通信与信息系统] TP37 [自动化与计算机技术—计算机系统结构]
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参考文献11

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同被引文献64

  • 1宫改云,高新波,伍忠东.FCM聚类算法中模糊加权指数m的优选方法[J].模糊系统与数学,2005,19(1):143-148. 被引量：81
  • 2张一彬,周杰,边肇祺,张大鹏.一种新的基于分类的音频流分割方法[J].电子学报,2006,34(4):612-617. 被引量：10
  • 3Xie L, Chang S-F, Divakaran A, et al. Structure analysis of soccer video with hidden Markov models[A]. In: Proceedings of International Conference on Acoustic, Speech and Signal Processing, Orlando, 2002. 345～350
  • 4Chang P, Han M, Gong Y. Highlight detection and classification of baseball game video with hidden Markov models[A]. In: Proceedings of the International Conference on Image Processing, New York, 2002. 167～171
  • 5Rui Yong, Gupta Anoop, Acero Alex. Automatically extracting highlights for TV baseball programs[A]. In: Proceedings of ACM Multimedia, Los Angeles, 2000. 105～115
  • 6Tzanetakis George, Cook Perry. Sound analysis using MPEG compressed audio[A]. In: Proceedings of International Conference on Acoustic, Speech and Signal Processing, Istanbul, 2000. 757～761
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  • 8Huang L S, Yang C-H. A novel approach to robust speech endpoint detection in car environments[A]. In: Proceedings of International Conference on Acoustic, Speech and Signal Processing, Istanbul, 2000. 434～438
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  • 10Platt J C. Probabilistic Outputs for Support Vector Machines for Pattern Recognition[M]. In: Fayyad U, ed. Advances in Large Margin Classifiers. Boston: Kluwer Academic Publishers, 1999. 61～74

引证文献7

二级引证文献21

计算机研究与发展
2002年 第9期

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