Although this example doesn't explicitly demonstrate their use, you can also include the SQL functions discussed in Part 5 to gain more control over the selection of rows for deletion.
您还可以包括第5部分中讨论的sql函数以获得对删除行的选择的更多控制，但是本例中没有明确演示这些函数的使用。
We can do it because our brains (admittedly given to us by natural selection for reasons of short-term Darwinian gain) are big enough to see into the future and plot long-term consequences.
我们能够做到是因为我们的大脑(毫无疑问，自然选择的短期达尔文利益导致了我们的大脑的产生)发达到能够看到未来并能谋划长远的结果。
Two main issues were investigated: a) the identification time for road input condition; b) the selection of reference signal on which the control gain are tuned.
主要对路面输入变化的估计时间和用以决定控制增益变化的系统输出信号的选择进行了研究。
Aiming at the preceding problem, this paper puts forward a feature selection method using Information Gain (IG) and Principle Component (Analysis) (PCA).
针对上述问题，提出了信息增益(IG)与主成分分析(PCA)相结合的特征选择方法。
Input channel selection, gain Settings and signal polarity can be configured in software using the bidirectional serial port.
利用双向串行端口，可在软件中进行输入通道选择、增益设置和信号极性配置。
Information gain is the measurement of the attributes selection in classical decision tree algorithm-ID3, but the attributes with high information gain is not always the valuable attributes.
传统的ID3决策树算法以信息增益作为属性选择的准则值，但是信息增益大的属性并不一定就是有价值的属性。
This paper proposes a new future selection algorithm based on information gain and chi-square test.
本文提出了一个基于信息增益和卡方检验的属性选择算法。
When the open-loop gain of servo system is determined, the selection of DAC resolution and gear ratio is restricted each other and should be paid much attention in the design of servo system.
由于DAC和齿轮减速比都影响着伺服系统的开环增益，当系统开环增益一定时，DAC位数的实际作用和减速比的选择相互限制，在设计雷达伺服系统中需注意。
This paper presents mainly parameter selection characteristic of autopilot and effect to flight quality of aircraft, after a basic configuration of fixed gain control augmentation system is shown.
文中在给出了固定增益的控制增稳系统的基本组成之后，着重介绍自动驾驶仪的参数选择特点及其对飞机飞行品质的影响。
Automation: Microprocessor controlled optical bench, digital speed control, automatic gain selection, advanced system check, automatic power saving mode.
自动化：微处理器控制光学台，数字化动镜控制，自动增益选择，高级的系统诊断，自动节电模式。
The selection of components for a two-way photocoupler with high speed and high gain is described as well as its structure, operating principle, basic characterizations and applications.
本文叙述了双路高速高增益光电耦合器的元件选择、结构、工作原理、基本特性和应用。
ID3 use category information gain (CIG) as selection level, through converse thought, author come up with attribute information gain (AIG) as selection level.
ID 3使用类别信息增益(CIG)作为选择属性的标准，而作者在逆向思维的基础上提出了使用属性信息增益(aig)来选择属性。
This paper constructed a new index: risk-return tradeoff ratio (RRTR), for portfolio selection, based on a premise that the reason of investors bearing the risks is to gain the super returns.
本文根据投资者冒风险是为了获得超过无风险收益的超额收益这一基本假定，构造了风险收益抵换率这一指标作为投资者进行资产选择的基础。
The four kinds of feature selection statistics include Chi-square, information gain, and mutual information and cross entropy, and the four corresponding feature sets are obtained.
这四种特征选择采用的统计方法是：卡方、信息增益、互信息、交叉熵。
In the analysis of correlated genetic gain, the selection for the dry gluten content had increasing effect on other quality characters.
在相关遗传进度的分析中，干面筋的选择对其他品质性状有较大的增效作用。
She tried, unsuccessfully, to gain selection as a candidate in 1955, but finally entered Parliament for the safe Conservative seat of Finchley at the 1959 general election.
1955年她再次竞选保守党候选人，却未能如愿，最终在1959年的大选中成功当选芬奇利议会成员。
The special location selection for urban commercial center will directly affect whether the commercial center can make its influence and gain its interest and value at its most.
城市商服中心空间位置选择的好坏，直接关系到商服中心能否最大限度的发挥其效用和实现其自身的利益或价值。
What is needed is an on-line system that can guide the operator through the gain selection process while keeping down the number of experiments.
现在需要的是一个在线系统，可以通过增益选择过程来指导操作者，同时降低实验次数。此外，这必须以一种可以满足不断变化的进程条件的方式完成。
Microprocessor controlled optical bench, digital speed control, automatic gain selection, and dynamic resolution enhancement, advanced system check.
自动化：微处理器控制光学台，数字化动镜控制，自动增益选择，动态分辨率增强，高级的系统诊断，校正滤波器。
It can work in ei - ther an equal-gain combining mode or a selection mode adaptively according to the ratio between the signal levels in the two branches.
它可根据两支路信号电平之比值来自适应地或是工作于等增益合并模式，或是工作于选择分集模式。
This paper introduced a new feature selection method, which first used clustering to reduce redundancy among features and then used Information Gain to choose good features.
针对这一问题，提出了一种基于聚类的特征选择方法，先使用聚类的方法对特征间的冗余性进行裁减，然后使用信息增益的方法选取类别区分能力强的特征。
This paper introduced a new feature selection method, which first used clustering to reduce redundancy among features and then used Information Gain to choose good features.
针对这一问题，提出了一种基于聚类的特征选择方法，先使用聚类的方法对特征间的冗余性进行裁减，然后使用信息增益的方法选取类别区分能力强的特征。
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