A Lecture-On-demand System using Spoken Document Retrieval

A Lecture-On-demand System using Spoken Document Retrieval
复制标题

使用语音文档检索的点播系统

DOI:
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发表时间:
2001
期刊:
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影响因子:
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通讯作者:
Tetsuya Ishikawa
Tetsuya Ishikawa
中科院分区:
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文献类型:
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作者:
K. Itou;Atsushi Fujii;Tetsuya Ishikawa

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本研究提出一个教学点播系统,其撷取视讯资料以回应使用者的资讯需求。为了这个目的,我们利用文本和音频/视频数据为一个单一的讲座。我们的系统从讲座视频数据中提取音轨,通过一个大词汇量的连续语音识别系统转录它们,并产生一个讲座数据库。用户可以通过提交文本查询,即,与目标讲座的文本相关联的关键字、句子和段落。我们现时的系统是透过互联网推行,以促进电子教育。
This research proposes a lecture-on-demand system, which retrieves video data in response to users’ information needs. For this purpose, we utilize texts and audio/video data for a single lecture. Our system extracts audio tracks from lecture video data, transcribes them by way of a large vocabulary continuous speech recognition system, and produces a lecture database. Users can selectively browse a specific video track by submitting textual queries, i.e., keywords, sentences and paragraphs associated with the text for the target lecture. Our current system is implemented over the Web, so as to facilitate e-education.