1) double sampling in aerial photo
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像片双重抽样法
2) double sampling
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双重抽样
1.
In this paper the method of double sampling is applied to PPS Sampling.
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本文把双重抽样技术用于PPS抽样,给出了该方法下总体总值的无偏估计量,估计量的方差及方差的无偏估计公式。
3) importance sampling
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重要抽样法
1.
Digital simulation of fuzzy reliability based on the importance sampling method;
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基于重要抽样法的模糊可靠性数字仿真
2.
An adaptive importance sampling algorithm is presented to evaluate fuzzy-random general failure probability,where a simulated annealing optimization is employed to seek the fuzzy-random design point—the Most Probable Failure Point(MPFP) in the failure region.
基于模糊随机广义可靠性分析向随机可靠性分析的转换,提出了模糊随机广义失效概率计算的自适应重要抽样法,该方法利用模拟退火智能优化,在模拟的过程中逐步逼近模糊随机广义设计点,并在模拟过程中自适应地构造重要抽样函数,从而使得模糊随机失效概率的计算效率和精度大为提高。
3.
The zero-variance technique is used to analyze a highly efficient importance sampling method developed by S.
Beck提出了一种高效率的线性体系的重要抽样法。
4) weighted sampling method
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权重抽样法
1.
A weighted sampling method developed to improve radiography quality combines the characteristics of the X-ray attenuation in the object,weighted factors for describing the particle transmission and random sampling.
为了更好地解决闪光照相深穿透中粒子碰撞位置而带来的大记录问题,提出了权重抽样法。
5) repeat replication
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重抽样方法
1.
This paper discusses in some details how to apply the method of repeat replications to the regression analysis, including both the linear and the nonlinear models.
文章较详细地讨论了将重抽样方法应用于回归分析,包括一元线性回归,多元线性回归以及非线性回归,并列举了计算实例。
6) importance sampling procedure
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重点抽样法
1.
In this paper,in order to establish a practical and reliable risk assessing system of platform structures,a stochastic simulation technique based on the importance sampling procedure is used to estimate the structure failure probability for CB12-C platform in th.
为了建立实用可靠的风险评价方法,本文使用基于重点抽样法的随机模拟技术,对渤海海域CB12-C井组平台结构进行了全概率法失效概率计算,并在此基础上进行了平台结构的风险评价。
补充资料:双重抽样
双重抽样
double sampling
双重抽样(double sampling)调查昆虫种群动态时采用的抽样方法之一,即当两种性状密切相关时,选择一种易观察性状随机抽取样本,代替另一种不易直接观察性状的抽样方法,又称间接抽样(in-direet sampling)。凡不易直接调查或虽可直接调查而需耗费较大人力、物力时,多采用双重抽样。例如调查棉铃虫田间雌蛾产卵期,可以检查雌蛾卵巢发育级别而加以推测。但检查卵巢发育级别须要解剖雌蛾,手续较繁,花时间多;已查明雌蛾卵巢发育级别与交配次数相关极显著,经统计,得出交配次数(x)与卵巢发育级别(y)的直线回归式为: y一2 .17+1 .03x共2+x即交配次数加2即为卵巢发育级别。则雌蛾的交配次数可根据交配囊中留下的精包残体数目确定,这就比解剖雌蛾观察卵巢发育级别要简易得多。,__‘、 戈李运凭)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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