基于多层核主成分提取估计器需要将调制信号的训练样本根据各自的频率进行分层。
The estimator based on kernel principal component extraction requires to stratify the training samples of interested signals with respect to their respective frequencies.
调查在分层逐级抽样法与随机抽样法相结合的抽样基础完成，共收集有效样本1005个。
The survey was completed on the basis of combining stratified sampling and random sampling, collecting 1005 valid samples in total.
更大样本的队列研究、分层分析、全基因测序有助于明确NKG2D基因在UC 发病过程中的作用。
Research of larger sample's queue, analysis from different layer and DNA sequence will help to determine the function of NKG2D in the process of UC.
定义和应用确保数据准确和完整的技巧，如随机抽样法、分层抽样法、样本同质性等。
Define and apply techniques for assuring data accuracy and integrity such as random sampling, stratified sampling, sample homogeneity, etc.
摘要：传统的分层聚类算法在聚类过程中，仅使用样本间的距离作为相似度的唯一标准，其描述过于单一。
Absrtact: the traditional hierarchical clustering algorithm for clustering process, only USES the distance between samples as the sole criterion for similarity, this description is too simple.
方法：以分层随机整群抽样的方法，确定调查样本。
Methods: Stratified random cluster sampling method was used to determine the survey sample.
采取分层整群抽样的调查方法，选取辽宁省14个市95家社区卫生服务机构作为分析样本。
This research adopts investigation methods of stratified sampling and cluster sampling, chooses 95 community health service organizations in 14 cities of Liaoning Province as a analysis sample.
方法按分层整群抽样的方法抽取样本，并通过问卷调查的方式收集有关广东省18岁以上居民的伤害信息。
Methods the study sample was got by multi-stage randomized sampling, and the injury information of the inhabitants aged over 18 years in Guangdong province was collected by questionnaire.
方法采用分层多阶段随机抽样法，获取样本。并采取问卷的形式进行调查。
Methods Multistage sampling and stratified sampling were used and information was gathered by interview with questionnaires.
由于该抽样调查采取的是分层抽样，因此相应地用分层抽样下的样本轮换研究。
As the sampling survey is stratified sampling, so the research of the sample rotation is under the stratified sampling.
群样本检验中，系统抽样群样本检验和分层随机抽样群样本检验的效果优于简单随机抽样群样本检验。
During the course of cluster sample verification, systematic sampling and stratified sampling "s accuracy are prior to simple random sampling" s.
包括分层抽样下样本轮换的估计量公式和最优样本轮换率的确定方法。再接着利用前面介绍的理论知识，结合上海市城镇住房空置率抽样调查数据进行实证分析。
Based on the theory and method introduced before, this paper applied the rotation models to compute the sample rotation rate of sampling survey on vacancy rate of households in Shanghai.
包括分层抽样下样本轮换的估计量公式和最优样本轮换率的确定方法。再接着利用前面介绍的理论知识，结合上海市城镇住房空置率抽样调查数据进行实证分析。
Based on the theory and method introduced before, this paper applied the rotation models to compute the sample rotation rate of sampling survey on vacancy rate of households in Shanghai.
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