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抽樣方法和整群隨機抽樣方法。
The survey was completed on the basis of combining stratified sampling and random sampling, collecting 1005 valid samples in total.
調查在分層逐級抽樣法與隨機抽樣法相結合的抽樣基礎完成，共收集有效樣本1005個。
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.
應根據(jù)現(xiàn)場作業(yè)方式、取樣設施配備情況選定，一般采用定量取樣、定時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造方法,此外,指數(shù)投資組合的構建及其優(yōu)化問題是這兩種指數(shù)化構造方法中最關鍵的環(huán)節(jié)。
計算機科學技術
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,將分層抽樣理論應用于自舉學習的訓練集擴展,也能在一定程度上提高了關系抽取的性能。
測繪科學技術
成層隨機采樣