文档聚类是实现话题检测与跟踪的重要方法。
Text clustering is an important technology for Topic Detection and Tracking.
新话题监测是话题检测与跟踪领域的一项重要研究。
New topic detection is an important research in the field of topic detection and tracking.
作为话题检测与跟踪的重要研究子课题，话题跟踪针对特定话题，识别后续信息流中的相关报道。
As an important subtask of topic detection and tracking, topic tracking identifies and collects relevant stories on certain topics from information stream.
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