arXivDaily arXiv每日学术速递 周一至周五更新
arXiv cs/0105037cs.CL
收藏

融合韵律和词汇线索的自动主题切分

Integrating Prosodic and Lexical Cues for Automatic Topic Segmentation

G. Tur, D. Hakkani-Tur, A. Stolcke, E. Shriberg

摘要:

我们提出了一个概率模型,同时使用韵律和词汇线索的自动分割语音成主题连贯的单位。我们提出了两种方法结合使用隐马尔可夫模型和决策树的词汇和韵律信息。从语音识别器中获取词汇信息,从语音波形中自动提取韵律特征。我们评估我们的方法上的广播新闻语料库,使用DARPA-TDT评估指标。结果表明,单独的韵律模型是有竞争力的基于词的分割方法。此外,我们实现了一个显着减少错误相结合的韵律和基于单词的知识源。

英文摘要:

We present a probabilistic model that uses both prosodic and lexical cues for the automatic segmentation of speech into topically coherent units. We propose two methods for combining lexical and prosodic information using hidden Markov models and decision trees. Lexical information is obtained from a speech recognizer, and prosodic features are extracted automatically from speech waveforms. We evaluate our approach on the Broadcast News corpus, using the DARPA-TDT evaluation metrics. Results show that the prosodic model alone is competitive with word-based segmentation methods. Furthermore, we achieve a significant reduction in error by combining the prosodic and word-based knowledge sources.

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。

↑