过滤

Direct difference is sensitive to noisy data, so a threshold limitation is given, which can not only filter the result from noisy data but also pick edge points up according men's desire. On the other hand, artificial intelligence is used for segmentation in reverse engineering. Because the essence of segmentation is clustering similar characteristics and self-organizing feature mapping is one function of neural network, SOFM network is used for segmentation in the thesis, coordinates and normal of data points is took as the characteristics vector.

第二种方法，基于双向角度微分的边点提取法，针对三维正交模型采用基于截面线的方式组织数据，此方法比基于曲率半径方法更简洁，不用进行曲面拟合，大大提高了计算速度；计算过程中由数据点的直接差分逼近微分，但直接差分对数据误差敏感，为此，本文提出了阈值过滤的方法，一方面过滤了数据误差在计算结果中引起的噪音，另一方面可以按照设计意图控制边点的提取；来决定是否提取光滑交接的边点。

This paper studied a filtering high order numerical method for one dimension constant coefficient hy2 perbolic function. The stability and error analysis show the efficiency of this method. Numerical examples are also given to verify the analysis results.

摘 要 考虑一维常系数双曲型方程的高阶数值解法，引进了一种稳定性过滤算子FN ，最后从理论和数值实验上分析了该过滤算子对数值解稳定性和精度的影响。

If you click on the Filter button, you can filter and sort the report.

如果你点击了过滤按钮，你就可以报告进行过滤和分类。

If you click on the Filter button, you can filter the report.

如果你点击了过滤按钮，你就可以报告进行过滤和分类。

It extracted useful visual features and used one-class support vector machine to identify and filter spam. The experimental results indicate that the proposed method can get satisfactory filtering effect with higher detection rate and lower false positives.

它提取出有用的形象特征并使用一类支持向量机来过滤垃圾邮件实验结果表明，该系统模型具有令人满意的过滤效果，并且有很高的探测率和较低的误判率。

Rather than forcing users to interrogate or filter on the operational code, we pull out the embedded meanings and present them to users as separate dimension attributes that can be filtered, grouped, or reported on easily.

我们应该取出编码内在的意义，并以可过滤，分组，或容易制作报表的单独的维度属性的方式提交给用户，而不是让用户去查询、过滤业务编码。

The sleeve member is oriented relative the first filter element to extend at least 30 % of the axial length of the first filter element.

套管件相对第一过滤元件取向，以沿着第一过滤元件的轴向长度延伸至少30％。

The graphics management tool of Iptables can manage the Iptables firewall on website. The Iptables firewall not only provides function to filter data, but also provides a function to transfer package as well as NAT.

Netfilter/Iptables防火墙是Linux平台下的包过滤防火墙，Iptables防火墙不仅提供了强大的数据包过滤能力，而且还提供转发，NAT映射等功能，是个人及企业级Linux用户构建网络安全平台的首选工具。

B. The grain filling medium makes it from traditional pass through filtering to permeate filtering.

B 采用粒状介质填充，使穿透性过滤变为渗透性过滤。

If crystals start to form in the pipet stop add a little more hot solvent to the solution and a drop or two hot solvent to the filtration pipet.

那就要停止过滤，把少量更加热的溶剂加到溶液中，而且向过滤移液管中加入1或2滴的热的溶剂。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。