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    Article

    Empirical likelihood for spatial cross-sectional data models with matrix exponential spatial specification

    In this paper, we study spatial cross-sectional data models in the form of matrix exponential spatial specification (MESS), where MESS appears in both dependent and error terms. The empirical likelihood (EL) r...

    Yan Liu, Jian-rong Rong, Yong-song Qin in Applied Mathematics-A Journal of Chinese U… (2024)

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    Article

    Empirical likelihood for response differences in two linear regression models with missing data

    Consider two linear models X i = U i β + ε ...

    Yong-song Qin, Tao Qiu, Qing-zhu Lei in Acta Mathematicae Applicatae Sinica, English Series (2015)

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    Article

    Joint empirical likelihood confidence regions for a finite number of quantiles under strong mixing samples

    In this paper, we obtain the joint empirical likelihood confidence regions for a finite number of quantiles under strong mixing samples. As an application of this result, the empirical likelihood confidence in...

    Qing-zhu Lei, Yong-song Qin in Applied Mathematics-A Journal of Chinese Universities (2015)

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    Article

    Empirical likelihood for quantiles under associated samples

    The construction of confidence intervals for quantiles of a population under a associated sample is studied by using the blockwise technique. It is shown that the blockwise empirical likelihood (EL) ratio stat...

    Ying-hua Li, Yong-song Qin, Qing-zhu Lei in Acta Mathematicae Applicatae Sinica, Engli… (2015)

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    Article

    Estimation for partially linear models with missing responses: the fixed design case

    Suppose that we have a partially linear model Y i = x i β + g(t i ...

    Yong-song Qin, Ying-hua Li in Acta Mathematicae Applicatae Sinica, English Series (2014)

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    Article

    Empilrical likelihood for non-parametric regression models with missing responses: Multiple design case

    Empirical likelihood (EL) ratio statistic on θ = g(x) is constructed based on the inverse probability weighted imputation approach in a nonparametric regression model Y = g(x)+ɛ (x ∈ [0, 1] p ...

    Qing-zhu Lei, Yong-song Qin in Acta Mathematicae Applicatae Sinica, English Series (2011)

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    Article

    Semi-empirical likelihood confidence intervals for the differences of quantiles with missing data

    Detecting population (group) differences is useful in many applications, such as medical research. In this paper, we explore the probabilistic theory for identifying the quantile differences between two popula...

    Yong Song Qin, Jun Chao Zhang in Acta Mathematica Sinica, English Series (2009)

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    Article

    Empirical likelihood confidence intervals for the differences of quantiles with missing data

    Suppose that there are two nonparametric populations x and y with missing data on both of them. We are interested in constructing confidence intervals on the quantile differences of x and y. Random imputation is ...

    Yong-song Qin, Yong-jiang Qian in Acta Mathematicae Applicatae Sinica, English Series (2009)

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    Article

    Modified likelihood ratio test for homogeneity in normal mixtures with two samples

    This paper investigates the modified likelihood ratio test(LRT) for homogeneity in normal mixtures of two samples with mixing proportions unknown. It is proved that the limit distribution of the modified likel...

    Yong-song Qin, Qing-zhu Lei in Applied Mathematics-A Journal of Chinese Universities (2008)

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    Article

    The empirical likelihood goodness-of-fit test for regression model

    Goodness-of-fit test for regression modes has received much attention in literature. In this paper, empirical likelihood (EL) goodness-of-fit tests for regression models including classical parametric and auto...

    Li-xing Zhu, Yong-song Qin, Wang-li Xu in Science in China Series A: Mathematics (2007)

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    Article

    Coverage Accuracy of Confidence Intervals in Nonparametric Regression

    Point-wise confidence intervals for a nonparametric regression function with random design points are considered. The confidence intervals are those based on the traditional normal approximation and the empiri...

    Song-xi Chen, Yong-song Qin in Acta Mathematicae Applicatae Sinica, English Series (2003)