查询词典 inconsistent estimator

To solve the problem of instability when the ratio of samples differ greatly,an improved formula for the method of ratio estimator is put forward by means of clustering,which can reduce the ef.

在抽样技术比例估计与均值估计的基础上，提出了抽样技术的比率估计法，并对其作了详细的分析，同时，通过具体问题的讨论，说明了比率估计法所具有的优越性；针对各个样本比值有比较大的差别时所产生的不稳定性，运用聚类分析的方法提出了具体的比率估计法的改进公式，减少了噪声数据的影响，得到了较高的准确度

Simple random sampling, two-phase sampling, auxiliary information, ratio estimator

| 简单随机抽样；二相抽样；辅助信息；比估计

The mean square errors and estimated mean square errors for the ratio estimator with bias of order 1/n 3are given.

改进了比率估计的均方误差，给出了偏差的价为 1/n3 的比率估计量均方误差及其估

Multicollinearity ; condition index ; variance decomposition proportion ; signal-to-noise ratio ; partial ridge estimator

复共线性；条件指标；方差分解比；信噪比；部分岭估计

Excepting the conventional methods of surveying samples, such as simple random sampling, stratified sampling, cluster sampling, systematic sampling, liner regression sampling, ratio estimator, two-stage sampling, double sampling, rotate sampling, non-probability sampling, there is sequential sampling and mark-recapture, particularly mark-recapture was introduced in detail.

针对生物资源的调查，除了一般抽样方法如：简单随机抽样、分层抽样、整群抽样、系统抽样、双重抽样、二阶抽样、样本轮换、比率估计、线性回归抽样和不等概抽样，还有序贯抽样和标记-重捕获方法，这里特别详细介绍了标记-重捕获方法。

The first part consists of Chapter Two, which concerns the research on linear minimax estimator of regression coefficients for a growth curve model.

论文首先在第一章综述了Minimax估计理论的研究情况，余下的内容分为三部分：第一部分由第二章组成，是关于增长曲线模型回归系数的线性Minimax估计问题的研究。

This shows that the usual estimator of the regression coeffcient is available when σ2 is unknown.

这表明当方差未知时，回归系数最小二乘估计是一个适合的估计。

In the second part, we study the rate of convergence of parameters estimator in linear regression model for contaminated data and only set error having forth ...

在第三部分和第四部分中，我们研究了污染数据半参数回归模型中模型参数和污染系数的估计问题。

In Chapter 2, we introduce the new root power estimator of regression coefficients B when the design matrix present ill-condition.

具体工作如下：(1)针对设计阵A与C至少有一个病态时的情况提出新根方估计？

In this paper, we study the problems of the kernel regression estimator with spherical data, the estimators of multivariate densit...

本文主要研究了球面数据回归函数核估计以及多维密度函数估计和多维回归函数估计问题。

Anna: No, I've got a hangover.

不是，我昨晚宿醉了。

We head into the mountains in Su's new Land Cruiser, stop for lunch at a scenic restaurant and then hang around drinking beer and eating fruit as two of his employees attempt to lure the birds with a tape recording of the fowl's mating call.

我们坐上苏的巡逻车向山顶出发，在一家风景优美的餐馆吃了中饭。然后我们喝着啤酒吃着水果四处逛。