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The maximum likelihood estimator for population average treatment effect is proved to be consistent, unbiased and asymptotically normal .

并且证明了在正态分布的假设下，该总体平均因果效应的极大似然估计是相合无偏且渐近正态的。

A new algorithm to the maximum likelihood estimator under ordered restrictions is proposed and is covergent quickly by simulation.

在该研究中，我们提出了优比在序约束条件下的最大似然估计算法，模拟显示该算法收敛速度相当快。

This is the core part of the whole paper.Based on maximum likelihood estimator of generalized linear model which was done before,we apply M-estimator to generalized linear model.

这一部分是本篇文章的核心部分，主要是根据现有文献中对广义线性模型中未知参数β的极大似然估计的方法，我们引入了广义线性模型的M-估计。

Comparing with the maximum likelihood estimator, the new estimator obtaining from this method not only has simple form and need not much computation,but also has good asymptotic properties.

这种方法得到的新的估计量跟极大似然相比，不仅形式更简单，不需要复杂的计算，而且具有相当好的渐近性质。

Also, it is deduced from the conclusions of maximum likelihood estimator that the performance of estimators is independent on source number if the number of snapshots used in estimator is large enough.

证明了它们在低信噪比情况下仍具有渐近无偏的估计性能；另外，利用最大似然估计器的相关结论，证明了在快拍数足够大的情况下，估计器的估计性能与信源数目的多少无关。

Without considering testing error ,we set up a group testing model in the presence of zero observations and derive maximum likelihood estimator and method of moment estimator of parameters.

在不考虑检验误差的情形下，建立一个含零观测值的模型并得到参数的最大概似估计量与动差估计量。

With the simulated annealing identification method, the maximum likelihood estimator of carrier's spacious hydrodynamic parameters can be acquired.

运用模拟退火算法可以获得运载器空间流体动力参数的极大似然估计。

The empirical approximation methods can be applied to study uniform consistency, robustness, strong consistency of the maximum likelihood estimator of statistical estimators.

本文采用的经验逼近方法可应用于研究随机规划统计估计问题的一致相合性、稳健性、极大似然估计的强相合性。

The maximum likelihood estimator approach is an important one in frequency estimation domain. This approach has the merit such as exhibiting best performance and requiring minimum threshold of signal noise ratio in calculation.

最大似然频率估计法是该领域中的一种重要的研究方法；该方法具有估计结果准确，计算所要求的信噪比门限值低等特点。

Our new model can avoid the contingent of unboundedness of the maximum likelihood function and excessive sensitivity of the maximum likelihood estimator to outliers, showing more robustness.

新模型可以克服似然函数可能出现无界的现象，在计算上有更好的鲁棒性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。