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.
二是采用滑动窗口技术来寻找等值线上的最近点，在每一次收敛到局部最小的过程中都减少了最近点计算量。
The second is to reckon the closest points by use of gliding window technique so as to reduce the computation cost in reckoning the closest points in each time of converging to local minimums.
二是采用滑动窗口技术来寻找等值线上的最近点，在每一次收敛到局部最小的过程中都减少了最近点计算量。
The second is to reckon the closest points by use of gliding window technique so as to reduce the computation cost in…
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