基于聚集查询重写的近似计算及其应用

Approximate Computation and Application Based on Aggregate Query Rewriting

研究了聚集查询重写的特征,根据数据仓库环境下聚集查询需要快速计算结果的特点,给出了一个基于聚集查询重写的快速近似计算模型。并在人口统计信息系统中应用该计算模型实现快速查询计算,该近似快速计算模型可以应用于具有统计特征的数据环境,获得快速的查询计算结果。

This paper researches into the characteristic of aggregate query rewriting and gives a kind of rapidly approximate query computing model based on aggregate query rewriting under the data warehouse. The approximate query computing model is applied into a population statistic information system so that it achieves effective approximate answers. For realizing the quick and efficient answer to statistic data query, the approximate query computing model can be applied into these fields.