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.
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。
If a significant data value skew exists for a column referenced in a query predicate, make sure that DB2 knows this, preferably by generating column-value histogram statistics using RUNSTATS.
如果查询谓词中引用的列存在显著的数据值倾斜，那么要确保DB 2了解这一情况，最好是使用RUNSTATS生成列值柱状图统计数据。
Local gray histogram statistics is applied to object detection in the images with multi-scale fractal feature.
在多尺度分形新特征图像中采用局部直方图统计方法进行目标检测。
In this paper, methods of sorting of radar pulses based on PRI are discussed. The histogram statistics algorithms and PRI transfer algorithm are analyzed and simulated.
文中讨论基于脉冲重复间隔(pri)的脉冲分选算法，深入分析了基于直方图统计算法和PRI变换算法的优缺点，并对算法进行计算机仿真。
In this paper, methods of sorting of radar pulses based on PRI are discussed. The histogram statistics algorithms and PRI transfer algorithm are analyzed and simulated.
文中讨论基于脉冲重复间隔(pri)的脉冲分选算法，深入分析了基于直方图统计算法和PRI变换算法的优缺点，并对算法进行计算机仿真。
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