查询词典 hypothesis test

Relationship between null and alternative hypothesis; Level of significance; typical steps of hypothesis test, two type errors, critical values.

教学目的：通过学习领会统计假设测验即统计推断的原理及其基本步骤，统计假设测验的两类错误及其关系。

The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.

在结构辨识中，常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失，因此，本文提出了新的有益思想，即在保留一定相关性的基础上进行辨识：将输出向量ΔW与环境函数矩阵S构成增广矩阵A，然后采用"比定阶行列式"来剔除相关向量的方法，这样既可以尽可能多地保留了对落点影响大的强相关参数，又可以对落点影响小的强相关参数给予剔除；在参数估计中，改进了特征根估计中特征根和特征向量的筛选方法，提出"近零"准则，从而大大提高了参数估计的精度；再者，鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的，因此，本文又深入分析了造成天地模型不一致的原因，提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验；最后，鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响，因此本文深入地分析了SINS制导工具误差系数与外界环境的关系，提出了基于过载变化大小的分段辨识和分段实时补偿的算法。

The probabilistic detection of subliminal channels mainly under Bernoulli test with binomial distribution is studied. Some results of the security of many-time-used channels in hypothesis test model based on relative entropy are obtained. 6. The schemes to avoid the subliminal channels are summarized and compared with each other.

给出了一次使用信道的安全条件，研究了随机性的统计检测方法，主要是贝努利试验二项分布情况下的统计检测，给出了基于相对熵的假设检验模型下关于多次使用信道安全性的一些结果。

We also studied the capacity of Newton channel. 5. The security conditions of one-time-used channels are given. The probabilistic detection of subliminal channels mainly under Bernoulli test with binomial distribution is studied. Some results of the security of many-time-used channels in hypothesis test model based on relative entropy are obtained.

给出了一次使用信道的安全条件，研究了随机性的统计检测方法，主要是贝努利试验二项分布情况下的统计检测，给出了基于相对熵的假设检验模型下关于多次使用信道安全性的一些结果。

After comparing the two type of tests,we came to some conclusions.The tests based on binomial test can be regarded as some kind of permutation tests under certain definition of "permutaton".If the tests are related to statistics,then whether they can be viewed as permutation tests depends on if the value of the probability,p,is known where p is the population parameter in the null hypothesis.For tests like Kolmogorov goodness-of-fit test,since the statistics is calculated based on empirical distribution function,hence no matter how we repermutate the observations,the order statistics is the same.This kind of tests can't be regarded as permutation tests.

我们得到的结论为：在一般的无母数检定中，如果检定与binomial test相关，基本上都可以视作排列检定的一种；与卡方检定相关的检定，基本上和p值已知或是未知有关，这个p值为原始假设下所要检定的母体机率值；其他检定如Kolmogorov goodness-of-fit test，由於统计量的值是根据empirical distribution function决定，而不论如何重新排列样本，其顺序统计量都不变，所以无法视为一种排列检定。

We discuss the serial M-ary multisensor decentralized data fusion based on Neyman-Pearson principle, especially on multiscale hypothesis test based on composite hypothesis.

建立了基于Neyman-Pearson准则的串行M元多传感器数据融合和复合假设测试的定义和统计特性标准，引入了基于复合假设测试的多尺度假设测试。

A Uniformly Most Powerful Test is applied to the composite hypothesis testing of leak signal With little prior statistical knowledge.

给定误警概率和漏报概率，施行具有一致最大功效的似然比检验(Uniformly Most Powerful Test，UMPT)。

This paper points out the problems about using statistical hypothesis test, analyses the relation between two types of errors and proposes the Bayes method to the persons when they have no enough knowledge about the null hypothesis.

本文首先指出实际工作中使用统计假设检验方法常出现的问题，具体介绍了假设检验方法，并分析两种错误之间的关系。

The problem of statistical discission in finite mixing distribution model and linear model is discussed in this thesis,including:Firstly,in the aspect of hypothesis test,we mainly discuss the general homogeneous hypothesis testing problem.

现将主要内容概述如下：一、在假设检验方面，本文主要研究了正态混合分稚模型的同构性检验问题，也就是说，检验观测数据究竟是来自单一的正态总体，还是混合正态总体。

In this paper, Iadopt statistics test, such as Wilcoxon, Sign and Paired-Samples T Test, to prove hypothesis : companies whose ROE are at the edge of collecting money demand will dispatch cash dividend in order to adjust ROE, making it meet collecting money demand, point out the nature of dividend policy in China is collecting money as well.

用实证研究方法，Wilcoxon、Sign和Paired Samples Test检验证明了假设&在融资要求边缘公司会利用派现，调整净资产收益率，达到融资要求&，指出我国属于融资式的股利政策。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。