由于它是范围谓词，而且没有频度和直方图统计数据可用，过滤因子是用基础统计信息HIGH2KEY和LOW2KEY计算得出的。
Since it is a range predicate and there are no frequency and histogram statistics available, the filter factor is calculated with the basic statistics information HIGH2KEY and LOW2KEY.
Amazon和Netflix，一家提供影片出租的网站，使用一种被称为协作式过滤的统计技术，按照其他用户的喜好为新用户提供建议。
Amazon and Netflix, a site that offers films for hire, use a statistical technique called collaborative filtering to make recommendations to users based on what other users like.
Voleon公司按照预测一类相关股票微小变动的模式，在大量数据的池中进行数据过滤。 来专注于统计学上的套利业务。
Voleonengages in statistical arbitrage, which involves sifting through enormous poolsof data for patterns that can predict subtle movements across a whole class ofrelated stocks.
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