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61.
经济不发达地区多系统图书馆协调发展模式初探 总被引:1,自引:0,他引:1
多系统图书馆协调发展的前提是建立在一种利益均衡机制上的横向联合,针对不同地区的经济发展状况而呈现出多种表象,如何把握本地区多系统图书馆之间的利益均衡,需要建立哪些激励机制和运转机制,同协调之后所要达到的预期效果密切相关。 相似文献
62.
本文阐述系统工程方法在上海市1987—1990年大学毕业生分配规划中的应用。通过建立数学模型及其形式变换,给出了两种不同的运算结果,并根据综合指标分别对结果进行了分析和评价。分析结果表明,推荐方案的总体偏差只有原方案的五分之一。 相似文献
63.
64.
Martin Pesendorfer Philipp Schmidt‐Dengler 《Econometrica : journal of the Econometric Society》2010,78(2):833-842
Recursive procedures which are based on iterating on the best response mapping have difficulties converging to all equilibria in multi‐player games. We illustrate these difficulties by revisiting the asymptotic properties of the iterative nested pseudo maximum likelihood method for estimating dynamic games introduced by Aguirregabiria and Mira (2007). An example shows that the iterative method may not be consistent. 相似文献
65.
This article discusses regression analysis of current status data, which occur in many fields including cross-sectional studies, demographical investigations, and tumorigenicity experiments (Keiding, 1991; Sun 2006). For the problem, we focus on the situation where the survival time of interest can be described by the additive hazards model and a multiple imputation approach is presented for inference. A major advantage of the approach is its simplicity and it can be easily implemented by using the existing software packages for right-censored failure time data. Extensive simulation studies are conducted and indicate that the approach performs well for practical situations and is comparable to the existing methods. The methodology is applied to a set of current status data arising from a tumorigenicity experiment and the model checking is discussed. 相似文献
66.
Dhafer Malouche 《统计学通讯:理论与方法》2013,42(9):1453-1464
The problem of selecting a graphical model is considered as a performing simultaneously multiple tests. The control of the overall Type I error on the selected graph is done using the so famous Holm's procedure. We prove that when we use a consistent edge exclusion test the selected graph is asymptotically equal to the true graph with probability at least equal to a fixed level 1 ? α. This method is then used for the selection of mixed concentration graph models by performing the χ2-edge exclusion test. We also apply the method to two classical examples and to simulated data. We compare the overall error of the selected model with the one obtained using the stepwise method. We establish that the control is better when we use the Holm's procedure. 相似文献
67.
This article develops a functional form of the generalized Poisson regression model that parametrically nests the Poisson and the two well known generalized Poisson regression models (GP-1 and GP-2). The proposed model is applied on the Malaysian motor insurance claim count data. 相似文献
68.
Sang-Ho Lee 《统计学通讯:理论与方法》2013,42(19):3492-3503
A new control scheme is proposed by borrowing the idea of the Benjamini–Hochberg procedure for controlling the false discovery rate in multiple testing. It is shown theoretically that the proposed 2-span control scheme outperforms the Shewhart X-bar chart in terms of the average run length under any size of mean shifts. Some simulations are carried out to demonstrate that the proposed scheme having various span sizes always outperforms the X-bar chart in terms of the average run lengths. 相似文献
69.
F. P. A. Coolen P. Coolen-Schrijner T. Coolen-Maturi F. F. Elkhafifi 《统计学通讯:理论与方法》2013,42(19):3478-3496
Nonparametric predictive inference (NPI) is a powerful frequentist statistical framework based only on an exchangeability assumption for future and past observations, made possible by the use of lower and upper probabilities. In this article, NPI is presented for ordinal data, which are categorical data with an ordering of the categories. The method uses a latent variable representation of the observations and categories on the real line. Lower and upper probabilities for events involving the next observation are presented, and briefly compared to NPI for non ordered categorical data. As application, the comparison of multiple groups of ordinal data is presented. 相似文献
70.
Li Wang 《统计学通讯:理论与方法》2013,42(14):3042-3055
Consider the multiple hypotheses testing problem controlling the generalized familywise error rate k-FWER, the probability of at least k false rejections. We propose a plug-in procedure based on the estimation of the number of true null hypotheses. Under the independence assumption of the p-values corresponding to the true null hypotheses, we first introduce the least favorable configuration (LFC) of k-FWER for Bonferroni-type plug-in procedure, then we construct a plug-in k-FWER-controlled procedure based on LFC. For dependent p-values, we establish the asymptotic k-FWER control under some mild conditions. Simulation studies suggest great improvement over generalized Bonferroni test and generalized Holm test. 相似文献