高维随机截尾数据的PP拟合优度检验

关于一维删截数据的拟合优度检验，已有相当多的文献，但高维截尾数据的拟合优度检验尚不多见．本文用PP技巧讨论了高维截尾数据的拟合优度检验，得到了检验统计量的渐近分布，并讨论了其Bootstrap逼近及逼近的相容性和检验的渐近功效．     

随机PP Kolmogorov多维拟合优度检验乃其Bootstrap逼近

本文提出了一种基于随机选择投影方向的PP型棉球等高分布族的拟合优度检验，其特点是计算上较通常的PP检验统计量简单．得到了其检验统计量在零假设下的极限分布，讨论了其Bootstrap逼近及逼近的相容性．     

删失数据中删失指标随机缺失下回归函数的非参数估计

本文在删失数据中删失指标随机缺失的情况下,运用非参数方法给出了回归函数的两种估计量,给出了估计量的一致收敛速度以及渐近分布,并进一步通过数值模拟验证了所提方法在有限样本下的性质.     

删失数据下几种两样本检验的功效研究

本文讨论了删失数据下的两样本检验问题,并提出了一个新的检验统计量.在样本来自指数分布和Weibull分布及不同的删失水平下,我们把这种检验与其它检验的功效进行了比较.结果表明,在某些情况下,这种检验比其它检验好.     

具有随机删失数据的部分线性模型的拟合优度检验的渐近性质

研究随机删失部分线性回归模型的假设检验问题. 提出了一个检验统计量来检验数据是否满足一个部分线性回归模型, 它是基于残差的cusum过程的平方形式. 研究了零假设下和局部对立假设下检验统计量的渐近分布. 数值模拟表明该检验方法有好的检验功效.     

删失回归模型的随机加权逼近

Raoand Zhao(1992)提出了一种用随机加权的方法去逼近线性回归模型中M-估计的渐近分布。之前，Fang and zhao(2002)把这种方法推广到设计阵是随机的删失回归模型．本文，我们把这个结果推广到设计阵是非随机的删失回归模型，并证明该随机加权方法的一些大样本性质。     

经验过程一致偏差概率的指数界及其应用（Ⅰ）

研究文中问题的诱因是考虑PP型Kolmogorov-Smirnov拟合优度检验问题(简称K-S     

浅谈分布数据的x2拟合优度检验

本文给出X为离散分布或连续分布时不同情况下数据的x2拟合优度检验.     

浅谈分布数据的χ~2拟合优度检验

本文给出X为离散分布或连续分布时不同情况下数据的χ~2拟合优度检验.     

随机删失下半参数回归模型的估计理论

本文研究了随机右删失情形下半参数回归模型中未知参数的估计问题,证明了它们的渐近正态性．文中结果是完全数据情形下相应结果的推广和改进     

Tests for sphericity under correlated multivariate regression equations model

Summary In this paper, the authors investigated the asymptotic distribution theory connected with the likelihood ratio test (LRT)-like test statistic for sphericity under correlated multivariate regression equations (CMRE) model. An asymptotic expression is obtained for the null distribution of the above test statistic. Asymptotic nonnull distribution of the above test statistic under fixed alternatives is also derived. The above results are derived when the underlying distribution is multivariate normal. It was also shown that the above results are valid even when the joint distribution of the observations is elliptically symmetric. The authors also derived the asymptotic null distribution of the LRT-like test statistic when the observations on each variable are elliptically symmetric. This work was supported by the Air Force Office of Scientific Research under Contract F49620-82-K-0001. Reproduction in whole or in part is permitted for any purpose of the United States Government.     

位置参数变点的非参数检验及其渐近性质

本文基于Ｕ－统计量,对于位置参数模型,讨论了位置参数变点的检验问题,给出了检验统计量并研究它的分市的极限性质,证明了检验统计量的极限分布是ｓｕｐ|Ｂ(ｔ)|,其中{Ｂ(ｔ),０＜ｔ＜１}是一个Ｂｒｏｗｎ桥．将此结果应用到了双参数指数分布和Ｗｅｉｂｕｌｌ分布尺度参数变点的检验问题中．     

A Quantile Goodness-of-Fit Test for Cauchy Distribution, Based on Extreme Order Statistics

A test statistic for testing goodness-of-fit of the Cauchy distribution is presented. It is a quadratic form of the first and of the last order statistic and its matrix is the inverse of the asymptotic covariance matrix of the quantile difference statistic. The distribution of the presented test statistic does not depend on the parameter of the sampled Cauchy distribution. The paper contains critical constants for this test statistic, obtained from 50,000 simulations for each sample size considered. Simulations show that the presented test statistic is for testing goodness-of-fit of the Cauchy distributions more powerful than the Anderson-Darling, Kolmogorov-Smirnov or the von Mises test statistic.     

Trimmed portmanteau test for linear processes with infinite variance

In this article, we consider a model check test for linear processes with infinite variance. As a test statistic, we employ the portmanteau test with trimmed residuals. It is shown that the limiting null distribution of the test is a chi-square distribution. Simulation results are provided for illustration.     

Probability plots and order statistics of the standard extreme value distribution

A comparison between the ordinary least-squares estimator and the weighted least-squares estimator when the data set arises from the standard extreme value distribution is provided. Probability plot of the extreme value distribution is applied. A goodness-of-fit test of the standard extreme value distribution is introduced. The percentage points of the test statistic are investigated. The results of power study for the test statistic under various alternatives show that in most situations the proposed test statistic serves as well as do competing alternatives.     

Some asymptotic properties of a progressively censored nonparametric test for multiple regression

The large sample null distribution of a progressively censored nonparametric test for multiple regression proposed by Majumdar and Sen is computed. Also the asymptotic nonnull distribution for the test based on Savage scores is computed for local alternatives when the underlying distribution is exponential. The power of this test is compared with the power of the corresponding fixed sample tests. The stopping properties are also investigated. A short table of critical values is included.     

A Cramér-von Mises test for symmetry of the error distribution in asymptotically stationary stochastic models

This paper has to do with a Cramér-von Mises test for symmetry of the error distribution in a class of absolutely regular and non-necessarily stationary heteroscedastic models. The test statistic is based on the empirical characteristic function. Its convergence, as well as that of the residual-based empirical distribution function are established. From these results, the null cumulative distribution function of the test statistic is approximated. A simulation experiment shows that the test performs well on the examples tested.     

Testing Homogeneity of Variance or Expected Value in Sequence of Independent Normal Distributions

The hypothesis of variance and expected value homogeneity of a sequence of independent normal variable is considered. A statistic to testing this hypothesis is proposed. Its moments are derived. Unbiasedness of the test as well as the limit theorem about the test statistic distribution is proved. Approximation of the test statistic probability distribution is evaluated. On the basis of computer simulation some critical values of the test are determined and the power of the test is analyzed. Several applications of the test are proposed, too.     

Approximation by randomly weighting method in censored regression model

Censored regression (“Tobit”) models have been in common use, and their linear hypothesis testings have been widely studied. However, the critical values of these tests are usually related to quantities of an unknown error distribution and estimators of nuisance parameters. In this paper, we propose a randomly weighting test statistic and take its conditional distribution as an approximation to null distribution of the test statistic. It is shown that, under both the null and local alternative hypotheses, conditionally asymptotic distribution of the randomly weighting test statistic is the same as the null distribution of the test statistic. Therefore, the critical values of the test statistic can be obtained by randomly weighting method without estimating the nuisance parameters. At the same time, we also achieve the weak consistency and asymptotic normality of the randomly weighting least absolute deviation estimate in censored regression model. Simulation studies illustrate that the performance of our proposed resampling test method is better than that of central chi-square distribution under the null hypothesis. This work was supported by National Natural Science Foundation of China (Grant No. 10471136), PhD Program Foundation of the Ministry of Education of China, and Special Foundations of the Chinese Academy of Sciences and University of Science and Technology of China     

A class of semiparametric rank-based tests for right-truncated data

A class of semiparametric rank-based tests is proposed for the two-sample problem with right-truncated data, where the truncation distribution is parameterized, while the lifetime distribution is left unspecified. The class contains as special cases the extension of the semiparametric Mann–Whitney test proposed by Bilker and Wang (1996) for right-truncated data. The asymptotic distribution theory of the test is presented. The small-sample performance of the test is investigated under a variety of situations by means of Monte Carlo simulations.