stratified sampling

基本解釋

Methods:The stratified sampling and cluster random sampling methods are used in this survey.
方法：本研究采用分層隨機(jī)抽樣方法和整群隨機(jī)抽樣方法。
The survey was completed on the basis of combining stratified sampling and random sampling, collecting 1005 valid samples in total.
調(diào)查在分層逐級(jí)抽樣法與隨機(jī)抽樣法相結(jié)合的抽樣基礎(chǔ)完成，共收集有效樣本1005個(gè)。
Considering the methods employed on site and the implement used for drawing the samples, normally quantity interval, time interval or stratified sampling method shall be used.
應(yīng)根據(jù)現(xiàn)場(chǎng)作業(yè)方式、取樣設(shè)施配備情況選定，一般采用定量取樣、定時(shí)取樣或分層取樣等方式。
vernon0426.blog.163.com

分層抽樣
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.
從其構(gòu)造原理中可以看出,分層抽樣法和優(yōu)化選樣法是比較合理有效的構(gòu)造方法,此外,指數(shù)投資組合的構(gòu)建及其優(yōu)化問題是這兩種指數(shù)化構(gòu)造方法中最關(guān)鍵的環(huán)節(jié)。
計(jì)算機(jī)科學(xué)技術(shù)
分層抽樣
Furthermore, the stratified sampling strategy can also be successfully applied to the training set expansion during the bootstrapping process.5.
同時(shí),將分層抽樣理論應(yīng)用于自舉學(xué)習(xí)的訓(xùn)練集擴(kuò)展,也能在一定程度上提高了關(guān)系抽取的性能。
測(cè)繪科學(xué)技術(shù)
成層隨機(jī)采樣