null hypothesis

英 [ˈnʌl haɪpɒθəsɪs] 美 [ˈnʌl haɪpɑːθəsɪs]

n.  零假设,原假设, 虚无假设 (即用两组人分别实验而结果相同)

计算机化学



牛津词典

noun

  1. 零假设,原假设, 虚无假设 (即用两组人分别实验而结果相同)
    the idea that an experiment that is done using two groups of people will show the same results for each group

    双语例句

    1. As a result, the denominator and numerator should be about equal if the null hypothesis is true.
      因此,如果无效假设为真,那么分母和分子应该差不多相等。
    2. We derived the asymptotic distribution of the proposed test statistic under the null hypothesis.
      在零假设下,得到了检验统计量的渐近分布。
    3. Whenever we reject the null hypothesis, the conclusion we do accept is called the alternative hypothesis.
      无论何时,拒绝无效假设时,我们所接受的结论叫做备择假设。
    4. On the Asymptotic Properties of Nonparametric Likelihood Ratio Test Under Composite Null Hypothesis
      复合零假设下非参数似然比检验的渐近性质
    5. When null hypothesis is not rejected for significance test between two averages, sometimes the result is wrongly interpreted as an indication of equivalence between two clinical treatments.
      对两组平均水平差异的差异性检验得出不拒绝零假设的结论时,此结果常常被误解为两治疗方案疗效等价。
    6. Research on the Proportion of Null Hypothesis in Multiple Hypothesis Testing
      多重假设检验中原假设比例问题的分析研究
    7. Now the goal is to fail to reject the null hypothesis, to get results that are statistically insignificant& in essence, to find nothing.
      现在,研究的目标就是“不排除零假设”,就是“找到统计不显著的结论”&究其本质,即为寻找到“空与无”。
    8. The city manager should accept the null hypothesis that there is no difference between the two methods of tax listing.
      市政府官员应该接受两种征税登记方法没有差别这个无效假设。
    9. We would like to reject H0 ( recall that in statistical hypothesis testing rejection of Null hypothesis is always a strong conclusion), thereby demonstrating that the process is capable.
      我们想要否定H0(取消对统计的假设中无效力假设的测试否定一直是一个强大的结论)。因此,示范加工是有能力的。
    10. This paper analyzes the problem appearing in the parameter significance testing based on different choice of null hypothesis and discusses the choice principles of null hypothesis.
      分析了参数的显著性检验中由于零假设的不同选择所出现的问题,探讨了零假设的选择原则。
    11. The rule proposed before is applicable only to judge "whether or not to reject the null hypothesis".
      以往的规则只能用来判断“能不能拒绝原假设”。
    12. We proposed a Pseudo likelihood ratio test statistic and obtained the limiting distribution under null hypothesis.
      提出一种拟似然比检验统计量,并在原假设下给出统计量的极限分布。
    13. The null hypothesis to be white noise has been rejected.
      经检验,时序为白噪声的零假设被拒绝。
    14. Objective: To proposes the basic principles and methods of the clinical trial under non_ null hypothesis.
      目的:提出非虚假设临床试验的基本原理和方法。
    15. The correction for the null hypothesis in the test of evaluator reliability
      对评分者信度检验中零假设的更正
    16. In single-side hypothesis testing, the exchange of the null hypothesis and alternative hypothesis would induce two different testing results sometimes.
      在单侧检验中,有时由于交换原假设与备择假设,会得到两个不同的假设检验结果。
    17. It is a remarkable progress by contrast with the classical clinical trials under null hypothesis.
      与经典的虚假设临床试验相比,这是一个明显的进步。
    18. Under null hypothesis, the limit distributions of statistics are obtained.
      在原假设下得到检验统计量的极限分布。
    19. CONCLUSION: 1. The result of surrogate data test rejects the null hypothesis that both the original EEG data and the surrogate data can be described by a linear model, which argues for the presence of non-linearity in the EEG for all states we tested.
      替代数据测试结果拒绝了EEG信号与替代数据均来自线性模型的假设,说明在所测的七种状态中EEG信号均具有非线性。
    20. We propose a new pseudo likelihood ratio test which is based on the cumulative sum ( CUSUM) statistic. The limiting distribution of the test under null hypothesis is present. In addition, We derive analytical expression for asymptotic critical value.
      基于累积和(CUSUM)统计量,提出一种新的波动性预测模型多变点的拟似然比检验,在原假设下给出统计量的极限分布及渐近临界值的解析表达式。
    21. The present methods can test the relationship between two population characteristics with high probability, thus it can overcome the disadvantage that to accept a null hypothesis may simply mean that it is not rejected by the traditional comparative tests.
      所以,置信对比检验能够以高概率确认两母体特征值之间的大小和比例关系,大大提高对比检验精度,克服了传统对比检验当接受原假设时仅仅意味着不拒绝原假设的缺点。
    22. Meth-ods: The two statistics and their power functions are respectively derived from the classical Cochran test and the Mantel-Haenszel test using the non-null hypothesis in place of the null hypothesis. Their performance is exhibited by Monte Carlo method.
      方法:以非虚假设取代虚假设分别由经典Cochran检验和Mantel-Haenszel检验推导出这两种统计量及其功效函数,并以MonteCarlo方法展示其行为。
    23. Firstly, we discuss whether the proportion of null hypothesis could be estimated, and we give the condition of the identification of the proportion of null hypothesis.
      首先,我们对原假设比例的可估性进行讨论,给出了原假设比例可估的条件。
    24. The fluctuations of allele frequency were obtained under the null hypothesis and alternative hypothesis.
      试验考察了零假设和备择假设下等位基因频率的变化。
    25. The statistical test is based on a comparison between local and global time-frequency features and the originality is to make use of a family of stationary surrogates generated from the original signal under test for defining the null hypothesis of stationarity.
      该平稳性检验基于局域时频特性与全局时频特性的比较,原创性地使用了由原始被测信号产生的平稳的替代品来定义平稳性的零假设。
    26. Given observation samples, under some assumptions we prove that the conditional limiting distribution of the weighted test statistic, no matter the null hypothesis or local alternative is true, is same as the null limiting distribution of the test statistic.
      在一些条件下我们证明了,不论在原假设下还是在局部对立假设下,随机加权检验统计量在给定观测值的条件下的条件渐近分布和检验统计量在原假设下的渐近分布相同。
    27. Above all, we put forward a new method to estimate the proportion of null hypothesis, and we have proved that the estimation value by this new method converge to the true value.
      而且提出一种估计原假设比例的新方法,并证明了用这种方法得到的原假设比例的估计值收敛于原假设比例的真实值。
    28. Then, based on the maximal difference of the spline estimators between neighboring knots, test statistics for the existence of jumps are given and their limiting distributions are derived under the null hypothesis that the conditional mean function is continuous.
      然后,根据相邻节点间条件均值函数的样条估计的最大差值构造探测跳点是否存在的检验统计量,并在条件均值函数连续的原假设下得到了检验统计量的极限分布。
    29. We derive the asymptotic distribution of the test statistics proposed here under null hypothesis.
      我们推导了在原假设下所提出的统计量的渐近分布。