1)PPS[英][,pi: pi: 'es][美]['pi 'pi '?s]不等概抽样
1.The NDVI value of sub-compartment pixel could be selected as the auxiliary factor of sampling probability proportional to size (PPS).结果表明:(1)采用小班面积×小班郁闭度(即小班树冠投影和)作为不等概抽样(PPS)辅助因子与小班蓄积相关性最好;(2)按龄组与树种组合分类型优于只按龄组或只按树种分类型后辅助因子与小班蓄积的相关性;而只按龄组分类型又优于只按树种分类型后辅助因子与小班蓄积的相关性;(3)小班平均NDVI值×小班面积(即小班像元NDVI值和)与小班蓄积量具有较好的相关性,可以作为小班不等概抽样的辅助因子,而且较小班面积与小班郁闭度之积有更好的现势性和可行性。
2.By using sampling method of sub-compartment that is sampling Probability Proportional to Size(PPS),the volume of sub-compartment had been estimated.笔者选用小班面积×小班郁闭度(即小班树冠投影和),将其作为不等概抽样辅助因子进行了小班类型抽样。
英文短句/例句
1.Selection and analysis of auxiliary factors using sampling method of sub-compartment小班不等概抽样辅助因子的选择与分析
2.The Estimation of Mean Under the Circumstances of Non-equal-probability Classified Cluster Sample Survey and Its Nature;不等概分类整群抽样下的均值估计及其性质
3.Research on Methodologies of the Auxiliary Information Application to the Unequal Probability Sampling Design;辅助信息在不等概率抽样设计中的应用方法研究
4.Practical Problems of Equal-Probability Principle in Multi-Stage Random Sampling;等概率原则在多阶段随机抽样中的实践问题
5.Inaccuracies in survey data attributable to“ the luck of the draw" in creating a probability sample.在产生概率抽样时由于抽样不足而造成的数据偏差.
6.alternative to probability sampling概率抽样的备择方案
7.probability proportional to size sampling概率比例规模抽样法
8.Generally, it is lack to recognize how to conduct a scientific/ reasonable sampling, including the concept of risk of sampling.如何抽样才科学合理，人们却普遍认识不足，对于抽样的风险概念更是缺乏了解。
9.The Sample Average Approximation Method for the Stochastic Variational Inequality Problem一类随机变分不等式的抽样平均近似方法
10.Evaluation of Different Protein Probability Calculating Methods Using a Semi-random Sampling Model and Other MS Bioinformatics Studies;利用半随机抽样模型进行蛋白质概率计算方法的评估等质谱信息学研究
11.Smokers and non-smokers have different opinions.抽烟的人和不抽烟的人观点不一样吧。
12.Different imaginary styles determine the different logical methods, such as analysis, synthesis, comparison, abstraction, summarization, restriction, induction and deduction.不同的想象方式决定着分析、合、较,抽象、概括、制,归纳、绎等不同的逻辑方法。
13.Don't speak in such abstract terms.不要这样抽象地谈问题。
14.To decide by a lottery with straws of unequal lengths.抽签用长度不等的草抽签决定
15.He speaks in concepts rather than specifics.他讲话时尽用抽象概念,而不谈具体。
16.Different sampling techniques are compared, the result shows that the method of chess board is the best.不同的抽样方法表明,以棋盘式抽样法最好。
17.Visual Presentation of Abstract Concepts in Higher Mathematics;直观图像在高等数学抽象概念讲解中的作用
18.Estimation of Undetected Error Probability of Block Codes Using Importance Sampling用重要性抽样方法估计分组码的未检概率
相关短句/例句
stratified sample with unequal probabitities分层不等概抽样
3)unequal probability sampling不等概率抽样
1.It adopts the probability sampling method of unequal probability sampling correction and can makes up the insufficiency of equal probability sampling estimation in the spot check.不等概率抽样估计是一种十分有效的抽样推断方法,它在实践中有着广泛的应用,采用不等概率抽样修正等概率抽样,可以弥补抽样调查中等概率抽样估计的不足。
2.In this paper,a model-calibrated pseudo-empirical likelihood method for constructing confidence intervals of Y and F(t) is considered under unequal probability sampling without replacement when complete auxiliary information is available.本文考虑了在无放回不等概率抽样下,当有完全辅助信息时,利用模型校正的伪经验对数似然方法去构造关于Y和F(t)的置信区间。
4)two-stage sampling with unequal probability二阶段不等概率抽样
5)Unequal Probability sampling design不等概率抽样设计
6)Equal Probability Sampling等概率抽样
延伸阅读
分层抽样分子式：CAS号：性质：又称分类抽样或类型抽样。将总体划分为若干个同质层，再在各层内随机抽样或机械抽样，分层抽样的特点是将科学分组法与抽样法结合在一起，分组减小了各抽样层变异性的影响，抽样保证了所抽取的样本具有足够的代表性。分层抽样根据在同质层内抽样方式不同，又可分为一般分层抽样和分层比例抽样，一般分层抽样是根据样品变异性大小来确定各层的样本容量，变异性大的层多抽样，变异性小的层少抽样，在事先并不知道样品变异性大小的情况下，通常多采用分层比例抽样。
