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31.
We evaluate the fit of several generalized expected utility models under homoscedasticity and three different heteroscedastic
error structures for the data set first reported in Hey and Orme (1994). Standard chi-squared tests are used for nested tests,
and both the Akaike (1973) information criterion and its consistent version (Hurvich and Tsai, 1989) are used for non-nested
ranking of these models. A testing framework is developed that explicitly accounts for the path-dependent nature of the model
selection problem. Not only does the selection of preference models depend on the error structure assumed, but the reverse
is also true: the selection of the error structure depends on the preference structure assumed.
An erratum to this article is available at . 相似文献
32.
In this paper we investigate the asymptotic critical value behaviour of certain multiple decision procedures as e.g. simultaneous confidence intervals and simultaneous as well as stepwise multiple test procedures. Supposing that n hypotheses or parameters of interest are under consideration we investigate the critical value behaviour when n increases. More specifically, we answer e.g. the question by which amount the lengths of confidence intervals increase when an additional parameter is added to the statistical analysis. Furthermore, critical values of different multiple decision procedures as for instance step-down and step-up procedures will be compared. Some general theoretic results are derived and applied for various distributions. 相似文献
33.
Anirban Dasgupta George Casella Mohan Delampady Christian Genest William E. Strawderman Herman Rubin 《Revue canadienne de statistique》2000,28(4):675-687
The authors consider the correlation between two arbitrary functions of the data and a parameter when the parameter is regarded as a random variable with given prior distribution. They show how to compute such a correlation and use closed form expressions to assess the dependence between parameters and various classical or robust estimators thereof, as well as between p‐values and posterior probabilities of the null hypothesis in the one‐sided testing problem. Other applications involve the Dirichlet process and stationary Gaussian processes. Using this approach, the authors also derive a general nonparametric upper bound on Bayes risks. 相似文献
34.
〕本文着重对言辞表达不当导致广告误区的问题作出分析,并认为除语言本体的规范标准外,还必须用汉语文化精神和民族精神的尺度,去对广告言辞的是非优劣作出评判。 相似文献
35.
雷莉 《宁波大学学报(人文科学版)》2007,20(6):61-64,100
邓小平在领导中国特色社会主义现代化建设实践中,重视反面经验的价值,不断结合形势发展需要正确总结反面经验,使反面经验成为宝贵的鉴戒资源,并在此基础上进行理性思考和理论创新。 相似文献
36.
住房价格上涨与其影响因素之间的关系研究——基于VEC模型的实证分析 总被引:1,自引:1,他引:0
通过建立向量误差修正模型,对中国近年来住房价格持续上涨的原因进行了分析。结果表明,土地价格的快速上涨、金融对房地产业的过度支持以及在住房价格继续上涨预期刺激下的投机因素是中国住房价格上涨过快的主要原因。近年来中国住房价格的持续快速上涨在很大程度上是一种泡沫现象。 相似文献
37.
《Journal of Statistical Computation and Simulation》2012,82(10):1517-1529
This paper investigates the lag length selection problem of a vector error correction model by using a convergent information criterion and tools based on the Box–Pierce methodology recently proposed in the literature. The performances of these approaches for selecting the optimal lag length are compared via Monte Carlo experiments. The effects of misspecified deterministic trend or cointegrating rank on the lag length selection are studied. Noting that processes often exhibit nonlinearities, the cases of iid and conditionally heteroscedastic errors will be considered. Strategies that can avoid misleading situations are proposed. 相似文献
38.
《Journal of Statistical Computation and Simulation》2012,82(4):415-426
This paper considers the problem where the linear discriminant rule is formed from training data that are only partially classified with respect to the two groups of origin. A further complication is that the data of unknown origin do not constitute an observed random sample from a mixture of the two under- lying groups. Under the assumption of a homoscedastic normal model, the overall error rate of the sample linear discriminant rule formed by maximum likelihood from the partially classified training data is derived up to and including terms of the first order in the case of univariate feature data. This first- order expansion of the sample rule so formed is used to define its asymptotic efficiency relative to the rule formed from a completely classified random training set and also to the rule formed from a completely unclassified random set. 相似文献
39.
P. W. West 《统计学通讯:模拟与计算》2017,46(6):4951-4965
Simulations of forest inventory in several populations compared simple random with “quick probability proportional to size” (QPPS) sampling. The latter may be applied in the absence of a list sampling frame and/or prior measurement of the auxiliary variable. The correlation between the auxiliary and target variables required to render QPPS sampling more efficient than simple random sampling varied over the range 0.3–0.6 and was lower when sampling from populations that were skewed to the right. Two possible analytical estimators of the standard error of the estimate of the mean for QPPS sampling were found to be less reliable than bootstrapping. 相似文献
40.
Nirodha Epasinghe 《统计学通讯:模拟与计算》2017,46(7):5610-5626
It is essential to test the goodness of fit of the model before making inferences based on it. Multilevel modeling of ordinal categorical responses is not as developed as for continuous responses. Assessing model adequacy in terms of the goodness of fit with ordinal categorical responses is still being developed and no satisfactory tests are available so far. As a consequence of that, this study concentrates on developing such a goodness of fit test for Multilevel Proportional Odds models and to study the properties of the test. 相似文献