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排序方式: 共有135条查询结果,搜索用时 15 毫秒
1.
Juan Kalemkerian 《统计学通讯:理论与方法》2019,48(16):3956-3975
A new test of normality with unknown parameters is proposed in this article. We introduce a Cramér–von Mises type statistic with weight function equal to the inverse of the standard normal density function supported in the interval ript>rc="//:0" data-src='{"type":"image","src":"/na101/home/literatum/publisher/tandf/journals/content/lsta20/2019/lsta20.v048.i16/03610926.2018.1465093/20190701/images/lsta_a_1465093_ilm0001.gif"}' /> ript>rc="//:0" alt="" class="mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/lsta20/2019/lsta20.v048.i16/03610926.2018.1465093/20190701/images/lsta_a_1465093_ilm0001.gif"}" />rc="//:0" alt="" data-formula-source="{"type" : "mathjax"}" /> depending on the sample size n. The sequence ript>rc="//:0" data-src='{"type":"image","src":"/na101/home/literatum/publisher/tandf/journals/content/lsta20/2019/lsta20.v048.i16/03610926.2018.1465093/20190701/images/lsta_a_1465093_ilm0002.gif"}' /> ript>rc="//:0" alt="" class="mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/lsta20/2019/lsta20.v048.i16/03610926.2018.1465093/20190701/images/lsta_a_1465093_ilm0002.gif"}" />rc="//:0" alt="" data-formula-source="{"type" : "mathjax"}" /> is chosen so that the statistic goes to infinity and after subtracting the mean, a suitable test statistic is obtained, with the same asymptotic law as the well-known Shapiro–Wilk statistic. It is shown that the performance of the new test in many cases improves that of other well-known tests of normality. 相似文献
2.
Moncef Abbas 《Theory and Decision》1995,39(2):115-126
This article proves that all complete preference structures where the strict preference relation (P) has no circuit admit a representation by intervals of the real line; the rule for deciding whether an interval is indifferent or preferred to another is less straightforward than for interval orders: strict preference is indeed compatible with a certain degree of overlapping of intervals, the allowed degree being specified by means of a so-called tolerance function. 相似文献
3.
给出了初等r-循环矩阵可逆的充要条件及逆矩阵的表达式;对奇异的初等r-循环矩阵给出了A的一个g-逆G(满足AGA=A,GAG=G)及Moore-penrose广义逆矩阵的表达式. 相似文献
4.
5.
为了改善螺旋槽干式气体端面密封性能,提出了一种由螺旋槽和圆弧槽组合的r型槽干式气体密封,并根据气体润滑理论建立了r型槽干式气体密封数值分析模型,定义了r型槽的主要几何结构参数,采用有限元方法求解雷诺方程,获得了端面气膜压力分布,分析了转速、压力对端面开启力、泄漏量等密封性能参数的影响规律,并与螺旋槽干式气体密封进行了对比研究。结果表明,r型槽干式气体密封中圆弧槽有回流作用,与螺旋槽干式气体密封相比有较小的泄漏量;r型槽干式气体密封更适用于低压高速场合。 相似文献
6.
In this paper we provide three nonparametric tests of independence between continuous random variables based on the Bernstein copula distribution function and the Bernstein copula density function. The first test is constructed based on a Cramér-von Mises divergence-type functional based on the empirical Bernstein copula process. The two other tests are based on the Bernstein copula density and use Cramér-von Mises and Kullback–Leibler divergence-type functionals, respectively. Furthermore, we study the asymptotic null distribution of each of these test statistics. Finally, we consider a Monte Carlo experiment to investigate the performance of our tests. In particular we examine their size and power which we compare with those of the classical nonparametric tests that are based on the empirical distribution function. 相似文献
7.
L. Baringhaus 《Journal of nonparametric statistics》2017,29(2):167-188
We give a probabilistic interpretation of the Cramér–von Mises distance ript>rc="/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0001.gif" alt=" /> ript>rc="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt=" class="no-mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0001.gif"}" /> between continuous distribution functions F and ript>rc="/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0002.gif" alt=" /> ript>rc="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt=" class="no-mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0002.gif"}" />. If F is unknown, we construct an asymptotic confidence interval for ript>rc="/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0003.gif" alt=" /> ript>rc="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt=" class="no-mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0003.gif"}" /> based on a random sample from F. Moreover, for given ript>rc="/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0004.gif" alt=" /> ript>rc="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt=" class="no-mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0004.gif"}" /> and some value ript>rc="/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0005.gif" alt=" /> ript>rc="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt=" class="no-mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0005.gif"}" />, we propose an asymptotic equivalence test of the hypothesis that ript>rc="/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0006.gif" alt=" /> ript>rc="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt=" class="no-mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0006.gif"}" /> against the alternative ript>rc="/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0007.gif" alt=" /> ript>rc="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt=" class="no-mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0007.gif"}" />. If such a ‘neighbourhood-of-ript>rc="/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0008.gif" alt=" /> ript>rc="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt=" class="no-mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0008.gif"}" /> validation test’, carried out at a small asymptotic level, rejects the hypothesis, there is evidence that F is within a distance ript>rc="/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0009.gif" alt=" /> ript>rc="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt=" class="no-mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0009.gif"}" /> of ript>rc="/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0010.gif" alt=" /> ript>rc="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt=" class="no-mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0010.gif"}" />. As a neighbourhood-of-exponentiality test shows, the method may be extended to the case that ript>rc="/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0011.gif" alt=" /> ript>rc="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt=" class="no-mml-formula" data-formula-source="{"type" : "image", "src" : "/na101/home/literatum/publisher/tandf/journals/content/gnst20/2017/gnst20.v029.i02/10485252.2017.1285029/20170405/images/gnst_a_1285029_ilm0011.gif"}" /> is composite. 相似文献
8.
Juan Kalemkerian 《统计学通讯:理论与方法》2017,46(10):4671-4685
Given i.i.d. Gaussian random variables and after standardizing the sample by subtracting the sample mean and dividing it by the sample deviation, we obtain an integral formula for the distribution of these self-normalized variables. Using geometrical arguments, we obtain the distribution of each and the joint distribution of two of them. These formulas can be used to calculate the expected value of the particular type of Cramér von Mises statistic to test normality. 相似文献
9.
Displacement and local linguistic practices: R‐lessness in post‐Katrina Greater New Orleans 下载免费PDF全文
Katie Carmichael 《Journal of Sociolinguistics》2017,21(5):696-719
Variable r‐lessness in New Orleans English is a salient linguistic feature tied to local place‐based identity. In this study, I examine rates of r‐lessness in the wake of Hurricane Katrina, which caused large‐scale displacement in the region. Participants come from the linguistically conservative suburb of Chalmette, where r‐lessness is more robust than in New Orleans proper. Participants’ connections to Chalmette were measured in two ways: (1) post‐Katrina location status, i.e. whether participants returned or relocated after the storm; (2) place orientation, captured via an ethnographically informed, multifaceted measure of stance and exposure to places outside of Chalmette. Analysis revealed that place orientation better predicts rates of r‐lessness than post‐Katrina location. I argue that the marked quality of r‐lessness makes it available for identity‐driven use to express a connection to Chalmette. This study demonstrates one way to account for the linguistic implications of individuals’ shifting allegiances to places they live(d). 相似文献
10.
《统计学通讯:理论与方法》2013,42(9):1835-1858
Abstract The efficacy and the asymptotic relative efficiency (ARE) of a weighted sum of Kendall's taus, a weighted sum of Spearman's rhos, a weighted sum of Pearson's r's, and a weighted sum of z-transformation of the Fisher–Yates correlation coefficients, in the presence of a blocking variable, are discussed. The method of selecting the weighting constants that maximize the efficacy of these four correlation coefficients is proposed. The estimate, test statistics and confidence interval of the four correlation coefficients with weights are also developed. To compare the small-sample properties of the four tests, a simulation study is performed. The theoretical and simulated results all prefer the weighted sum of the Pearson correlation coefficients with the optimal weights, as well as the weighted sum of z-transformation of the Fisher–Yates correlation coefficients with the optimal weights. 相似文献