weighted sampling meaning in English
加权抽样
Examples
- There are bogus surveys galore ? she takes commendable swipes at alfred kinsey and shere hite ? but very little based on proper , probability - weighted samples , and even fewer international comparisons
虚假的调查太多了? ?她对阿尔弗雷德?金赛和雪莉?海德进行了抨击，这值得赞扬? ?但很少有调查是基于恰当的、概率加权的样本，基于国际比较的就更少了。 - Figures for the weighted sample were obtained from weighting the figures of the raw sample by the gender - age distribution of the hong kong population , according to the 2001 population census results published by the hksar government
被访者基本个人资料加权样本的数据，是根据政府公布的2001年人口普查结果，把原始数据按照年性别分布情况加权调整后的结果。 - The basic idea of this method is to produce particles from the posterior densities , and these weighted samples provide approximations to the densities . in this dissertation , sequential monte carlo method and its applications in communication are investigated . firstly , its basic idea , method and improved method are introduced , then induce the bound of particles , which determines the performance of the system , and the more particles are chosen , the higher computation is done , finally , a new detector based on new importance function is proposed , which deals with the joint channel estimation and detection in flat fading channels
首先介绍了它的基本思想、基本方法、及当前研究现状；在此基础上推导出样本数选择的界，样本数的选择决定了系统的性能，但是若选的太多，计算复杂度也会随之增大，因而给出这个界是十分有意义的；最后提出了一种基于新的重要函数的检测器用来解决平坦衰落信道下的联合信道估计和检测问题，并通过仿真证明了我们提出的新检测器的有效性。 - This algorithm laid the foundations of other sampling inference algorithms , such as importance sampling algorithm and like - hood weight sampling algorithm . in this paper , the description of accurate and complexities of some kinds of sampling algorithms are presented on the basis of introduction to basic concepts of bayesian networks . first , the mathematical foundations of them are given here in view of statistics
本文首先介绍了bayesian网的一般概念及推理任务,并主要着眼于bayesian网推理算法的数学原理,提出了样本平均值算法,对几种推理算法从数学角度做出本质性的刻画,给出各自的复杂度和精确度的理论分析,证明了他们在各种情况下的推理效率。