The existent skyline query algorithms are designed for static space sets, so they are not suitable for dynamic space sets.
针对上述问题，提出动态空间集下的轮廓更新算法。
We use slide window to approximate the data stream and propose two skyline query algorithms on data stream called CCS and PCS.
采用滑动窗口技术对数据流进行近似，提出了两种数据流上的轮廓查询方法：CCS算法和PCS算法。
We use slide window to approximate the data stream and propose two skyline query algorithms on data stream called CCS and PCS.
采用滑动窗口技术对数据流进行近似，提出了两种数据流上的轮廓查询方法：CCS算法和PCS算法。
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