分类数据

With the development of Internet technology and improvement of application technology, real-time and fast packet classifications have been applied to more and more services.

1引言 随着Internet规模的不断扩大与应用技术的不断进步，越来越多的业务需要对数据包进行实时、快速的分类。

For example, data may not have been collected in the previous period in a way which allows reclassification, and it may not be practicable to recreate the information.

例如，数据可能没有在以前期间按允许重新分类的方式收集，且重新生成这些信息又不切实际。

Therefore, when the grid technique or the district was applied to regionalize spatial scale, individual soil profile are needed more to reduce uncertainties of the estimate of soil organic matter in the grid or the district with spatial scale up, but the uncertainties are smaller when using soil organic matter content in wellestimate gird or district to estimate the grid or district without available data by extrapolation.

因此，采用网格法或行政区划分空间区域，获得空间区域单元内土壤有机质含量或贮量的精确估算需要较多的剖面，但外推至数据不足的空间区域时，估算的不确定较小；采用土壤分类单元为空间区域单元，结果则相反。

The results show that the new method has the advantage of relative accuracy and stability over traditional method.

仿真和对实际数据分析的结果表明，该方法能够较准确、稳定提取线谱序列，为目标检测和分类识别提供了可靠依据。

The information that uses all sorts of methods to be collected to place undertakes classification and arrange, the method that uses integration analysis is made forecast, produce the data forms for reporting statistics of conclusion sex and view, repass local area network delivers decision-making layer, provide sufficient decision-making basis for decision-making layer.

利用各种手段对所收集的信息进行分类和整理，运用综合分析的方法作出猜测，产生结论性的数据报表和视图，再通过局域网传递给决策层，为决策层提供充分的决策依据。

In this paper ,we utilize the imagery with greater 1 meter resolution which is so called very high resolution as experimental data and do the research of ribbon road and simple building roof , and we talk about the process and method of extraction from high-resolution remotely sensed imagery :the representation of road and building in high-resolution image is analyzed ;a method of semi-automatic extraction for ribbon road based on angular texture signature and profile matching is promoted ;a algorithm for road extraction based on Snakes model is compared and analyzed ;the method of object-oriented image analysis and classification is introduced and we utilize this method to extract simple building roof semi-automatically ;the algorithm of road extraction is implemented as prototype system ;finally , the practicability of above-mentioned method are evaluated .

本文以分辨率大于1米的超高分辨率遥感影像作为试验数据，以具有一定宽度的带状道路和简单建筑物屋顶作为研究对象，探讨分析了高分辨率遥感影像中地物要素的半自动提取过程和方法：分析了高分辨率遥感影像中道路和建筑物的特征表现；提出了一种基于角度纹理特征和剖面匹配的带状道路半自动提取方法；对比分析了基于Snakes模型的道路提取算法；介绍了面向对象的图像分析和分类方法，使用该方法对简单建筑物屋顶进行了半自动提取；以原型系统方式对道路提取算法进行了实现；最后结合试验，对上述各种方法在实用性方面进行了评估。

Classify glass defect by computing rotundity degree and slightness degree as characteristic vector.

最后针对分割图像，提取缺陷目标的面积和周长等特征参数，计算出图像中缺陷的圆形度和伸长度指标，组成特征矢量来对缺陷种类进行识别分类，为进一步的优化玻璃切割系统提供详尽的数据。

Results from customer data of a certain Chinese telecommunication company and the fact that the churners and the non-churners have different misclassification costs demonstrate that by altering the sampling ratio of churners and non-churners,this cost-sensitive learning method can considerably reduce the total misclassification cost produced by traditional classification methods.

基于某电信企业的客户数据，及流失客户和非流失客户代价非对称的实际，实证研究结果表明，CS-C4.5通过调整流失类和非流失类样本的比例，大大降低了传统分类算法的样本错分总代价。

The better the separability of data set, the higher the classification accuracy.

数据集的可分性好，就容易获得高的分类精度。

Among these factors, class separability represents the nature of data set and decides the optimal performance of classifier.

其中类别可分性代表了数据集的自然特性并决定了分类器能够获得的最优性能。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。