查询词典 forward-biased

1 The reasons there are two main expressions for "population" and "sample"" is that one is "biased estimator and the other is not.

"母体"与"样本"之所以有两种表达公式，是因为一个是有偏估计，另一个则不是。

Uncertain POMDP with infinite planning horizon is also discussed, and the biased maximum estimator is used to acquire an optimal control method.

本文主要的创新有：首次提出并研究了有限规划水平MDP的自适应决策，通过将Bayes方法引入MDP的自适应决策，获得能够实现次优的自适应决策方法，从而为在生产实践中大量存在的有限规划水平MDP自适应决策提供了理论指导。

Instead of using the homomorphic filter which is used to get rid of multiple noise and is a biased estimator, this algorithm translates speckle into locally stationary additive white noise.

该算法不同于有偏的去除乘性噪声的同态滤波算法，而是将噪声转化为局部平稳的加性白噪声。

The reason lies that detrending towards the data process is problematic because of biased OLS estimator, and RWB isn't suitable to the TAR model because it is constructed based on linear autoregressive model.

原因在于①对数据过程进行退势是有问题的，因为均值估计是有偏估计；②RWB方法是基于AR模型而提出的，不适用于TAR模型。

The performance of EFT is investigated, which indicates that time-frequency distributions using single-sided window could not accurately trace the variation of the instantaneous frequency, since their performance depend only on the history of the signal, so they are biased frequency estimator.

提出了基于对称阵元互Wigner分布平均的瞬时频率估计算法，这种方法利用多通道数据对时频分布的瞬时频率估计方法的性能进行了有效的改善，并且能够在低信噪比的条件下获得良好的估计效果， 6。

Part 2 studies the adaptive control of general MDP with the same parameter set as part 1. In part 3, the biased maximum likelihood estimator is used for the adaptive control uncertain POMDP and an optimal method is proposed.

第一部分在离散化参数集的基础上提出一种比现有方法效率更高的自适应决策方法；第二部分在第一部分的思想上，研究一般MDP的自适应决策；第三部分则将有偏极大似然法从MDP推广到POMDP，研究POMDP自适应决策。

There are two findings summarized from previous studies:(1) the least squares estimator is a common choice of researchers, but under an unequal probability design, the estimator is biased,(2) the probability weighted estimator is consistent but may have a large variance.

过去的研究发现：(1)在不等机率抽样时，一般常用的最小平方法所得到的回归参数估计式并非不偏估计式；(2)机率加权最小平方法可以改善不偏性，然却增加估计的变异程度。

In this paper we discuss the influence problem of Ridge Estimator in general linear regression model, study the influence analysis on Ridge Estimator with covariance matrix disturbance and data deletion, define Cook distance of Rideg Estimator based on biased estimator.

讨论一般线性回归模型岭估计的影响+分析问题，研究了协方差阵扰动和数据删除对岭估计的影响，给出了岭估计基于有偏估计的Cook距离。

However, MLE is a biased estimator of the fold change and minimum variance estimator of the fold change exists under the log-normal distribution.

然而相对表现量在对数常态分布时应用最小变异不偏估计法较 MLE 具有不偏性和最小变异。

SNR maximum likelihood estimator based on data directed decision was evaluated first, and was concluded as a biased estimator. An unbiased estimator can be acquired through high order moments of received data.

摘要通过对基于判决反馈的信噪比最大似然估计推导过程的分析，得出：判决反馈最大似然估计得到的估计值是有偏估计；利用基带数据的高阶矩特性，可以获得渐近无偏估计。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。