Firstly, we processed hierarchy structure partition to the video, and analyzed the necessity of events as the retrieval units from the point of rogatory granularity in video retrieval;
首先对视频进行了层次化的结构划分，从视频检索的查询粒度角度分析了以事件作为检索单元的必要性；
Firstly, we processed hierarchy structure partition to the video, and analyzed the necessity of events as the retrieval units from the point of rogatory granularity in video retrieval;
首先对视频进行了层次化的结构划分，从视频检索的查询粒度角度分析了以事件作为检索单元的必要性；
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