1) adaptive cluster sampling
适应性整群抽样
1.
On two stage adaptive cluster sampling to assess pest density;
应用二阶适应性整群抽样估计害虫密度
2) adaptive cluster sampling
适应性群团抽样
1.
A new inequality probability sampling——adaptive cluster sampling (ACS) is presented,which includes the conception,characteristics,the two basic estimators of ACS and some reviews.
介绍一种新的不等概率抽样技术——适应性群团抽样(ACS)。
2.
Based on the fractal theory,the adaptive cluster sampling technique for Nitraria tangtorum sand dune was studied by using the method of integrated remote sensing data and the actual survey data in Ulan Buh Desert.
以乌兰布和沙漠的白刺沙丘为主要研究对象,采用分形理论将遥感数据和实际调查数据相结合的方法,进行了适应性群团抽样技术的研究。
3) adaptive sampling
适应性抽样
4) Cluster sampling
整群抽样
1.
Methods Cluster sampling method was used and the results were analyzed for cultivable bacteria in several representative hospitals of Chengde city from May 1998 to May 2000.
方法采取整群抽样方法,对承德市几家有代表性医院从1998年5月至2002年5月的临床细菌培养结果进行统计分析。
2.
Methods 3299 students in Tongcheng middle and elementary schools were sampled by cluster sampling and some common diseases were investigated.
方法 通过整群抽样对桐城市 32 99名中小学生进行健康检查和常见病的监测。
3.
For stratified and cluster sampling with inappreciable differences, estimate precision becomes poor.
对于分层抽样和整群抽样，当群体间的差异、群内个体间差异均不显著时，其估计精度往往都很差。
5) adaptive sampling
自适应抽样
1.
The paper makes a detailed discussion on sampling measurement technology,and then analyzes an adaptive sampling measurement.
在对目前的抽样测量技术研究的基础上,分析了一种自适应抽样测量技术。
2.
This paper introduces a new measure based on entropy for adaptive sampling.
自适应抽样方法是减少这种噪声的一种很好的方法。
3.
The data stream on every distributed node is taken for a sub-tensor of the global data stream,based on the communication of distribution information between the distributed nodes and the central node,and can produce the synopsis data structure matrix through adaptive sampling on every distributed node\'s sliding window.
该算法将各分布结点上的数据流作为全局数据流的子张量,通过分布结点与中心节点的通信,在分布结点的滑动窗口中自适应抽样生成概要数据结构矩阵。
6) multiple-stage cluster sampling
多阶段整群抽样
补充资料：整群抽样
分子式：
CAS号：
性质：将总体中各单位划分为若干群，从各群中随机抽取整群样品，例如，调查中学生患近视眼的情况，抽某一个班做统计；进行产品检验；每隔8h抽1h生产的全部产品进行检验等。整群抽样的优点是抽样方法简便，缺点是抽取的样本在总体中分布不均匀，代表性差。
CAS号：
性质：将总体中各单位划分为若干群，从各群中随机抽取整群样品，例如，调查中学生患近视眼的情况，抽某一个班做统计；进行产品检验；每隔8h抽1h生产的全部产品进行检验等。整群抽样的优点是抽样方法简便，缺点是抽取的样本在总体中分布不均匀，代表性差。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条