查询词典 sampling

Using random sampling method to improve the classifier in the non-equilibrium generalization performance on data sets.

使用随机抽样的方法以提高分类器在非平衡数据集上的泛化性能。

Though stratified random sampling method is adopted for the arterial and collector functional systems, there is a good potential to improve it.

尽管分层随机抽样的方法已经在干线和一般的集散系统得到利用，它仍有很大的发展空间。

Survey is also available on the web for input from clubs that were not in the random sampling.

调查也扩及由扶轮社於网上输入资料，这并不包括在随机抽样中。

The reason is simple: most lack the home phone number needed for random sampling.

原因很简单：大多数的人都没有固定电话以供随机抽样。

Methods A total of 3 594 floating people were selected in the questionnaire investigation with random sampling.

采用随机抽样方法，对广东省3 594名育龄流动人口进行问卷调查。

348 Visitors from Hong Kong are involved in a random sampling questionnaire survey on ship before they leave Macau.

本研究通过在澳门返回香港的轮船上以随机抽样调查的方式调查了香港到澳门旅游的游客348人。

The phase difference correction method is presented to measure the parameters of random sampling unbalancing signal.

实验表明结果该方法可以获得较高的测量精度。

A lot of experiments prove that it has relatively high data sampling speed and waveform resolution rata, it provides a new method for the study of the are voltage sudden-changing process.

试验证明该系统具有较高的数据采集速度和波形分辨率，它为电弧电压突变运动过程的深入研究提供了新的分析方法和手段。

At first, this dissertation takes the natural gamma log as an example to put forward the regularized least-squared deconvolution theory, with which not only the effect of the surrounding formation is removed, but al so the effects of the well logging velocity, sampling interval, the ratemeter time constant, the detectorlength and the formation dip-angle are re moved.

首先，本文以自然伽马测井曲线为例，研究了正则化最小乘方反褶积方法。应用该方法，不仅消除围岩对自然伽马曲线读数的影响，而且消除测井速度、测井采样间隔和率表电路时间常数的影响。

We give the approximation formulas of the variance of the sample ratio estimator for a population mean and its asymptotically non-biased estimator in multi-stage sampling.

讨论多阶段抽样比率估计及其样本量选择的问题，给出了比率估计抽样均方误差的近似公式及其渐近无偏估计的公式。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。