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101.
宣培才 《绍兴文理学院学报》1992,(6)
本文推广了的结果,主要研究了一类Ismail-May算子线性组合的同时逼近问题,在一致通近意义下,给出了逼近的正定理、逆定理及非最优逼近阶的特征刻划. 相似文献
102.
对于商业秘密的立法保护,既有"行为法"模式,也有"权利法"模式。前者侧重于规制侵犯商业秘密的不正当竞争行为,强调竞争秩序的维护及社会公共利益的保护,形为"宽保护",实为"弱保护";后者侧重于保护权利人的商业秘密权,强调私权保护,形为"窄保护",实属"强保护"。厘清并强调商业秘密的知识产权属性,对确立商业秘密的权利法保护将起着重要的影响乃至决定作用。我国立法现状及司法实践,都亟待权利法的"强保护",即以权利法为中心,以行为法为补充的综合立法保护。 相似文献
103.
Kallappa M. Koti 《Pharmaceutical statistics》2003,2(2):133-144
Using a Yamaguchi‐type generalized gamma failure‐time mixture model, we analyse the data from a study of autologous and allogeneic bone marrow transplantation in the treatment of high‐risk refractory acute lymphoblastic leukaemia, focusing on the time to recurrence of disease. We develop maximum likelihood techniques for the joint estimation of the surviving fractions and the survivor functions. This includes an approximation to the derivative of the survivor function with respect to the shape parameter. We obtain the maximum likelihood estimates of the model parameters. We also compute the variance‐covariance matrix of the parameter estimators. The extended family of generalized gamma failure‐time mixture models is flexible enough to include many commonly used failure‐time distributions as special cases. Yet these models are not used in practice because of computational difficulties. We claim that we have overcome this problem. The proposed approximation to the derivative of the survivor function with respect to the shape parameter can be used in any statistical package. We also address the issue of lack of identifiability. We point out that there can be a substantial advantage to using the gamma failure‐time mixture models over nonparametric methods. Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
104.
M'hamed Ezzahrioui 《统计学通讯:理论与方法》2013,42(17):2735-2759
We consider the estimation of the conditional quantile function when the covariates take values in some abstract function space. The main goal of this article is to establish the almost complete convergence and the asymptotic normality of the kernel estimator of the conditional quantile under the α-mixing assumption and on the concentration properties on small balls of the probability measure of the functional regressors. Some applications and particular cases are studied. This approach can be applied in time series analysis to the prediction and building of confidence bands. We illustrate our methodology with El Niño data. 相似文献
105.
This article considers the nonparametric maximum likelihood estimator (NPMLE) of a joint distribution function when the multivariate failure times of interest are interval-censored. With different types of interval censoring mechanism, the NPMLE's of the multivariate distribution function are studied and the strong consistency for the NPMLEs is obtained in terms of a self-consistency equation. Furthermore, the convergence rate of the estimator is given, which depends on the types of interval censoring mechanism. 相似文献
106.
In this article, we consider the product-limit quantile estimator of an unknown quantile function under a censored dependent model. This is a parallel problem to the estimation of the unknown distribution function by the product-limit estimator under the same model. Simultaneous strong Gaussian approximations of the product-limit process and product-limit quantile process are constructed with rate O[(log n)?λ] for some λ > 0. The strong Gaussian approximation of the product-limit process is then applied to derive the laws of the iterated logarithm for product-limit process. 相似文献
107.
In this article, we establish optimal rates for the strong approximation of empirical copula processes in ?2 by sequences of Gaussian processes. These results are applied to investigate Cramér–von Mises-type statistics. 相似文献
108.
We consider the geometric Markov renewal processes (GMRP) as a model for a security market. Normal deviations of the geometric Markov renewal processes for ergodic averaging and double averaging schemes are derived. We introduce Poisson averaging scheme for the geometric Markov renewal processes. European call option pricing formulas for GMRP are presented. 相似文献
109.
Mi-Hwa Ko 《统计学通讯:理论与方法》2013,42(8):1553-1562
In this article, the asymmetric Marcinkiewicz-Zygmund strong law of large numbers for linear random field under negative association is obtained. Our result generalizes a result in Gut and Studtmüller (2009). An asymmetric Marcinkiewicz-Zygmund LLN for random fields to the linear random field by using the Beverige-Nelson decomposition. 相似文献
110.
V. Fakoor 《统计学通讯:理论与方法》2013,42(3):512-519
In this article, we discuss nonparametric estimation of a mean residual life function from length-biased data. Precisely, we prove strong uniform consistency and weak converge of the nonparametric mean residual life estimator in length-biased setting. 相似文献