Informix USES histograms to store the distribution information of the data.
Informix使用直方图存储数据的分布信息。
The low mode populates only the scalar statistical values (that is, no distribution information) of a table.
low模式只填充表的标量统计值(也就是说,没有分布信息)。
The optimizer USES data distribution information generated by UPDATE STATISTICS to calculate selectivity for the filters in the query.
优化器使用UPDATESTATISTICS所生成的数据分布信息来计算查询中筛选器的选择性。
However, in the absence of data distribution information, the optimizer will calculate selectivity for filters of different types based on table indexes.
然而在缺乏数据分布信息的情况下,优化器将基于表索引计算不同类型筛选器的选择性。
Without column data-value distribution information in the catalog, DB2 will assume an even distribution of values, which may lead the optimizer to a sub-optimal access path.
如果编目中没有列数据值分布信息,DB 2就会假设值是均匀分布的,这可能导致优化器选择非最优的访问路径。
Logistics distribution information research.
物流配送信息的研究。
Firstly, this paper presents the trademark image retrieval method based on distance distribution information entropy.
首先,本文提出了基于距离分布信息熵的商标图像检索方法。
The invention further provides a device for obtaining the address distribution information of failure bits in non-volatile memory.
本发明还提供了一种获取非挥发存储器中失效二进制位地址分布信息的装置。
The color spatial distribution density can provide the color spatial distribution information for CBIR(Content Based Image Retrieval).
在基于内容的图像检索中,颜色的空间分布密度能提供颜色在空间的分布信息。
Imaging spectrometer is a kind of space remote sensing detector. It can get space and spectral distribution information of a target at the same time.
成像光谱仪是一种空间遥感探测器,它可以同时获取目标的空间和光谱分布信息。
With the advent of information era and the popularization of computers, the depth and extent of using distribution information should be more enlarged.
随着信息时代的到来和计算机的普及,配网信息应用的深度和广度都需要进一步扩展。
Proposed a new brain tumor segmentation method based on the level set method using the gradient and the intensity distribution information in magnetic resonance images.
根据脑肿瘤在核磁共振图像上的梯度以及图像中点的强度分布提出了一种新的基于水平集的分割方法。
In terms of the gray statistics and distribution information of kernel region and chalky region distribution characteristic in the kernel region, four algorithms of chalky rice are presented.
在稻米垩白的检测问题上,根据籽粒区域的灰度统计和分布信息,以及垩白区域在籽粒区域中的分布特征,提出了四种垩白米检测算法。
It is easy to perform for traditional image retrieval based on color histogram, however, its calculation in color histogram intersection is too large and the space distribution information is lost.
传统的基于颜色直方图特征的图象检索方法简单且易于实现,但其直方图求交运算量过大,而且丢失了颜色的空间分布信息。
Using TM data and image process software ENVI3.2, the winter wheat area and distribution information were obtained by methods of Spectral Angle Mapper and man machine interactive interpretation etc.
应用陆地卫星TM资料和遥感图像处理ENVI3.2软件,以监督分类波谱角法、人机交互等方法提取冬小麦面积及分布信息。
Using TM data and image process software ENVI3.2, the winter wheat area and distribution information were obtained by methods of Spectral Angle Mapper and man machine interactive interpretation etc.
应用陆地卫星TM资料和遥感图像处理ENVI3.2软件,以监督分类波谱角法、人机交互等方法提取冬小麦面积及分布信息。
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