...程式中的应用(分层等比例抽样法 ；分层不等比例抽样法 )，此单元将对分层抽样法作更深入的介绍。 分层抽样(stratified sampling)属于随机抽样 … 随机抽样英文-随机抽样英语翻译-随机抽样英文怎么说-什么意 …
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stratified sampling method [统计] 分层抽样法
method of stratified sampling [矿业] 分层取样法 ; 分层抽样法
area stratified sampling 区域分层抽样
disproportionate stratified sampling [统计] 不等比例分层抽样 ; 非比率分层抽样法
covariance for stratified sampling [统计] 分层抽样协方差
proportionate stratified sampling 比率分层抽样法
stratified sampling of water 分层取水样
Stratified sampling with optimum allocation 最优配置法
gains from proportionate stratified sampling [统计] 按比例分层抽样的得益
Seen from the structure principle, stratified sampling method and optimized sampling method are rational and effective. In additional, constructing the optimal index investment portfolio is the most essential link in the two index investment methods.
从其构造原理中可以看出,分层抽样法和优化选样法是比较合理有效的构造方法,此外,指数投资组合的构建及其优化问题是这两种指数化构造方法中最关键的环节。
参考来源 - 指数投资组合优化方法的比较研究Furthermore, the stratified sampling strategy can also be successfully applied to the training set expansion during the bootstrapping process.5.
同时,将分层抽样理论应用于自举学习的训练集扩展,也能在一定程度上提高了关系抽取的性能。
参考来源 - 命名实体间语义关系抽取研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
Methods: The stratified sampling and cluster random sampling methods are used in this survey.
方法：本研究采用分层随机抽样方法和整群随机抽样方法。
Methods With stratified sampling and cluster sampling, we investigate 487 families in poverty.
方法采用分层整群抽样方法调查487户贫困家庭。
Methods Middle School students in Jiangsu Rural Areas were investigated with SCL-90 by stratified sampling.
方法随机分层整群抽样的方法，应用症状自评量表（SCL-90）对江苏省农村中学进行调查测评。
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