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91.
Empirical Bayes estimator for the transition probability matrix is worked out in the cases where we have belief regarding the parameters, For example, where the states seem to be equal or not. In both cases, priors are in accordance with our beliefs. Using EM algorithm, computational methods for different hyperparameters of the empirical Bayes are described. Also, robustness of empirical Bayes procedure is investigated. 相似文献
92.
刘宇 《长春理工大学学报(社会科学版)》2007,20(4):1-3
我国司法实践中对于刑民交叉案件,在处理机制上主要依据先刑后民原则,该原则是否应被看作一种法律原则来适用,其是否有法律依据,如何界定该原则的适用范围,以及对其存在的意义如何评价,是主要阐述的问题. 相似文献
93.
云南省西双版纳地区是一个民族文化多元性和生物资源多样性特征十分突出的地区 ,在西双版纳地区的现代社会发展中 ,要十分珍惜和有效保护好丰富的民族文化和多样性的生物资源与生态环境。 相似文献
94.
Some improved ratio type estimators of population mean and ratio in finite population sample surveys
B. Prasad 《统计学通讯:理论与方法》2013,42(1):379-392
In this paper we present a class of ratio type estimators of the population mean and ratio in a finite population sample surveys with without replacement simple random sampling design, where information on an auxiliary variate x positively correlated with the main variate y is available. Large sample approximations to mean square errors (MSE) of these estimatorsare evaluated and their MSE's are compared with the MSE of the usual ratio estimator [ybar]R of [ybar] the population mean of y. It is shown that under certain conditions these estimators are more efficient than [ybar]R. When a prior knowledge of the value of thecoefficient of variation, cy, of y is at hand, ratio type estimator, say [ybar]1 of [ybar] is proposed. It is shown, under certain conditions, that [ybar]1 is more efficient than [ybar]R. When values of cy, cx and the population correlation coefficient ρ is at hand, then we have proposed another estimator, say [ybar]2 of [ybar], which is always better than [ybar]R as far as the efficiency is concerned. In fact, is [ybar] 2 is shown to be even better than [ybar]1. Finally estimators better than the usual ratio estimator [ybar]/[xbar] of [Ybar] are given. 相似文献
95.
For the balanced variance component model when the intraclass correlation coefficient is of interest, Bayesian analysis is often appropriate. Berger and Bernardo’s (1992a) grouped ordering reference prior approach is used to analyze this model. The reference priors are developed and compared for the posterior inference with real and simulated data. We examine whether the reference priors satisfy the probability-matching criterion. Further, the reference prior is shown to be good in the sense of correct frequentist coverage probability of the posterior quantile. 相似文献
96.
The one-way random effects model with unequal variances and unequal sample sizes is considered. Estimation of the variances, variance of a single observation (total variance), and the standard error of the unweighted mean are considered. Precision of the Analysis of Variance and Unweighted Sums of Squares type of estimators and the Minimum Norm Quadratic Unbiased Estimators with a priori weights are examined. 相似文献
97.
Guillermo Martínez-Flórez Barry C. Arnold Heleno Bolfarine Héctor W. Gómez 《Journal of statistical planning and inference》2013
The main object of this paper is to propose a multivariate extension to the alpha-power model which is an alternative to the multivariate skew-normal model (Arellano-Valle and Azzalini, 2008). It also extends the power-normal model discussed in Gupta and Gupta (2008) by making it more flexible. Inference is dealt with by using the likelihood approach and a pseudo-likelihood approach based on conditional distributions which, although slightly less efficient, is simpler to implement. An application to a real data set is used to demonstrate the usefulness of the extension. 相似文献
98.
The reference priors of Berger and Bernardo (1992) are derived for normal populations with unknown variances when the product of means is of interest. The priors are also shown to be Tibshirani's (1989) matching priors. 相似文献
99.
《Journal of Statistical Computation and Simulation》2012,82(8):1115-1133
In this paper, the design of reliability sampling plans for the Pareto lifetime model under progressive Type-II right censoring is considered. Sampling plans are derived using the decision theoretic approach with a suitable loss or cost function that consists of sampling cost, rejection cost, and acceptance cost. The decision rule is based on the estimated reliability function. Plans are constructed within the Bayesian context using the natural conjugate prior. Simulations for evaluating the Bayes risk are carried out and the optimal sampling plans are reported for various sample sizes, observed number of failures and removal probabilities. 相似文献
100.
Kallappa M. Koti 《统计学通讯:理论与方法》2013,42(10):3671-3676
Some inequalities are established in P1(r, s) and P1(r+1, s), where P1(r, s) is the confidence coefficient of Wilks’ (1962) outer confidence interval (X(r) X(s)) for the quantile interval (ξp1, ξp2). An inequality concerning incomplete beta functions is also presented and it is shown to be an improved version of one of Koti's (1989) inequalities. 相似文献