Aggregation query over high rate data streams: basically, most existing aggregation algorithms adopt the approximation technology to obtain the advancement of rate by sacrificing the accuracy.
高速数据流聚集查询：目前已有的聚集算法绝大多数是采用近似技术，以牺牲精度来换取速度的提高。
Aggregation query over high rate data streams: basically, most existing aggregation algorithms adopt the approximation technology to obtain the advancement of rate by sacrificing the accuracy.
高速数据流聚集查询：目前已有的聚集算法绝大多数是采用近似技术，以牺牲精度来换取速度的提高。
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