unbiased estimate造句

• Uniformly minimum variance unbiased estimate
  方差一致最小无偏估计
• Futures price is the unbiased estimate of expected spot price , which is based on the function of risk transferring
  期货价格是未来现货价格的无偏估计，这是建立在风险转移功能基础之上的。
• The proposed method can provide unbiased estimate of the ms ' s position . it is characterized by high efficiency and small memory volume requirement
  该方法对移动台位置的估计是一种无偏估计，具有存储量小、摘要定位效率高的特点。
• All these estimates are feasible unbiased estimates . we use the quotient of the determinant of the variance - covariance matrix of the feasible unbiased estimates , that is , a kind of relative efficency to compare these esti - mates . the results have instructive significance for practice
  我们应用这些估计的协方差阵的行列式之商，即一种相对效率比较了这些估计的优劣，所得结果对实际应用具有一定指导意义。
• Enlightened by the idea of aic , this paper treats the data of the same group as samples of certain distribution . in this way , it determines the number of groups by seeking the asymptotically unbiased estimate of kullback - leibler information
  在aic准则思想的启发下，将应该同属于一个分类的数据看作是在某一分布中抽取的样本，从而通过求kullback - leibler信息量的渐近无偏估计而达到确定类数与数据分类的目的。
• Through proper linear transformation of the origional model , we obtain the educed models which are all sigular models . we peform the uniform theory of least squares getting the best linear unbiased estimates of the coefficents and the ordinary least squares estimates
  因为这时模型协方差阵结构仍含有方差参数，因此我们的目标是寻求可行估计。我们通过对原模型做适当的线性变换，获得了导出模型，这些模型都是奇异线性模型。
• Therefore , each sum of squares of deviations is the times of the consisitent and unbiased estimate of variance . so , if the division is reasonable , the sum of squares of deviations attained through the data to be grouped and the one attained through history data should be very close
  这样，由于每个类内离差平方和为该数据所属分布的方差的相合且无偏的估计的倍数，故如果分类合理，则由待分数据得到的离差平方和应与由历史数据得到的离差平方和相接近。
• We make the following assumption for when 2 is positive definite matrix , different estimators about matrix of regression coefficients and inefficiency of least squares estimate have been discussed in many documents . considered 2 is nonnegative definite matrix , this thesis derives best linear unbiased estimate of parameter matrix b and estimable parameter function kbl under the meaning of matrix nonnegative definite and the property of maximum probability of blue is investigated . next , we discuss some necessary and sufficient conditions of the equality of the lse and blue , then we derive the estimation of the deviation bet - ween the least squares and the best linear unbias estimators of the mean matrix , meanwhile a relative efficiency of lse ofb is proposed and its bound is given
  当0时，众多文献讨论了回归系数阵的各种估计及lse的有效性，本文考虑了当0的情形，给出了回归系数阵b及其可估参数函数kbl的在矩阵非负定意义下的最优估计( blue ) ，研究了它的一个最大概率性质，并且讨论了最小二乘估计成为最佳线性无偏估计的充分必要条件，在此基础上给出了均值矩阵的最小二乘估计与blue的偏差估计，定义了lse相对于blue的一个相对效率，并给出了它的界。
• In this paper , we discussed the procedures of quantiles , maximum - likelihood , probability weighted moments , moments , least square , the best linear unbiased estimate , good linear unbiased estimation , and the best invariant estimate to the parameters of gumbel distribution , then give out the expectation and variance - covariance respectively . we compared the statistical behavior of these eight estimate procedures not only theoretically but also in the monte - carlo simulation
  本文利用分位数法、极大似然法、概率加权矩法、矩法、最小二乘法、最佳线性无偏估计法、简单线性无偏估计法、最好线性同变估计法对gumbel分布中的参数进行估计，分别给出了这八种估计量的期望、方差和协方差。