TDT2 English Audio
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<p><strong>PRICING:</strong></p><br> <ul><br> <li>1999 Commercial Members: $0</li><br> <li>1999 Non-Profit Members: $1460</li><br> <li>Non-Members: $14,600</li><br> </ul><br> <h3>Introduction</h3><br> <p>Topic Detection and Tracking (TDT) refers to automatic techniques for finding topically related material in streams of data such as newswire and broadcast news. The TDT2 corpus was created to support three TDT2 tasks: find topically homogeneous sections (segmentation), detect the occurrrence of new events (detection), and track the reoccurrencce of old or new events (tracking).</p><br> <h3>Data</h3><br> <p>The TDT2 Audio Corpus contains a total of 1,036 waveform files. Each file is a complete single-channel recording of 30- or 60-minute broadcast, which has been digitized at a sample rate of 16 KHz using 16-bit samples.</p><br> <p>The four broadcast sources represented in the corpus with their format and programning frequency are as follows:</p><br> <p>ABC World News Tonight -- "traditional" network news, 30 minutes/day</p><br> <p>CNN Headline News -- continuous news summaries, up to 4 30-minute samples/day</p><br> <p>PRI The World -- "in-depth" radio news, 60 minutes/weekday</p><br> <p>VOA -- varied 60-minute news programs, up to 2/day</p><br> <h3>Updates</h3><br> <p>There are no updates at this time.</p></br>
<p><strong>收费标准：</strong></p><br><ul><br><li>1999年度商业会员：0美元</li><br><li>1999年度非营利会员：1460美元</li><br><li>非会员：14600美元</li><br></ul><br><h3>简介</h3><br><p>话题检测与追踪（Topic Detection and Tracking, TDT）指的是在新闻专线、广播新闻等数据流中挖掘主题相关内容的自动化技术。TDT2语料库旨在支撑三项TDT2任务：提取主题同质片段（分段）、检测新事件的出现（事件检测）以及追踪新旧事件的再次出现（事件追踪）。</p><br><h3>数据说明</h3><br><p>TDT2音频语料库共计包含1036个波形文件。每个文件均为时长30分钟或60分钟的完整单声道广播录音，以16 kHz采样率、16位采样精度完成数字化处理。</p><br><p>本语料库涵盖四类广播源，其格式与播出频次如下：</p><br><p>ABC晚间世界新闻（ABC World News Tonight）——“传统”主流电视新闻节目，每日播出30分钟</p><br><p>CNN头条新闻（CNN Headline News）——全天候新闻摘要节目，每日最多播出4段30分钟的内容</p><br><p>PRI全球报道（PRI The World）——“深度”广播新闻节目，工作日每日播出60分钟</p><br><p>VOA——多样化60分钟新闻节目，每日最多播出2档</p><br><h3>更新情况</h3><br><p>目前暂无更新。</p></br>
