全文获取类型
收费全文 | 408篇 |
免费 | 8篇 |
专业分类
管理学 | 39篇 |
民族学 | 8篇 |
人才学 | 1篇 |
人口学 | 13篇 |
丛书文集 | 10篇 |
理论方法论 | 10篇 |
综合类 | 31篇 |
社会学 | 43篇 |
统计学 | 261篇 |
出版年
2024年 | 1篇 |
2023年 | 2篇 |
2022年 | 4篇 |
2021年 | 8篇 |
2020年 | 11篇 |
2019年 | 12篇 |
2018年 | 22篇 |
2017年 | 24篇 |
2016年 | 16篇 |
2015年 | 18篇 |
2014年 | 17篇 |
2013年 | 103篇 |
2012年 | 27篇 |
2011年 | 16篇 |
2010年 | 14篇 |
2009年 | 17篇 |
2008年 | 20篇 |
2007年 | 12篇 |
2006年 | 7篇 |
2005年 | 7篇 |
2004年 | 10篇 |
2003年 | 9篇 |
2002年 | 2篇 |
2001年 | 4篇 |
2000年 | 8篇 |
1999年 | 2篇 |
1998年 | 5篇 |
1997年 | 3篇 |
1996年 | 5篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1989年 | 1篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1983年 | 1篇 |
排序方式: 共有416条查询结果,搜索用时 524 毫秒
231.
《统计学通讯:模拟与计算》2013,42(3):559-579
The author proposes the best shrinkage predictor of a preassigned dominance level for a future order statistic of an exponential distribution, assuming a prior estimate of the scale parameter is distributed over an interval according to an arbitrary distribution with known mean. Based on a Type II censored sample from this distribution, we predict the future order statistic in another independent sample from the same distribution. The predictor is constructed by incorporating a preliminary confidence interval for the scale parameter and a class of shrinkage predictors constructed here. It improves considerably classical predictors for all values of the scale parameter within its dominance interval containing the confidence interval of a preassigned level. 相似文献
232.
Junfeng Shang 《统计学通讯:理论与方法》2013,42(6):1095-1109
Repeated measurements are collected in a variety of situations and are generally characterized by a mixed model where the correlation within the subject is specified by the random effects. In such a mixed model, we propose a multiple comparison procedure based on a variant of the Schwarz information criterion (SIC; Schwarz, 1978). The derivation of SIC indicates that SIC serves as an asymptotic approximation to a transformation of the Bayesian posterior probability of a candidate model. Therefore, an approximated posterior probability for a candidate model can be calculated based upon SIC. We suggest a variant of SIC which includes the terms which are asymptotically negligible in the derivation of SIC. The variant improves upon the performance of SIC in small and moderate sample-size applications. Based upon the proposed variant, the corresponding posterior probability can be calculated for each candidate model. A hypothesis testing for multiple comparisons involves one or more models in the candidate class, the posterior probability of the hypothesis testing is therefore evaluated as the sum of the posterior probabilities for the models associated with the testing. The approximated posterior probability based on the variant accommodates the effect of the prior on each model in the candidate class, and therefore is more effectively approximated than that based on SIC for conducting multiple comparisons. We derive the computational formula of the approximated posterior probability based on the variant in the mixed model. The applications in two real data sets demonstrate that the proposed procedure based on the SIC variant can perform effectively in multiple comparisons. 相似文献
233.
In this article, we deal with the problem of testing a point null hypothesis for the mean of a multivariate power exponential distribution. We study the conditions under which Bayesian and frequentist approaches can match. In this comparison it is observed that the tails of the model are the key to explain the reconciliability or irreconciliability between the two approaches. 相似文献
234.
Best Quadratic Unbiased Prediction in a General Linear Model with Stochastic Regression Coefficients
In this article, we discuss on how to predict a combined quadratic parametric function of the form β′ H β + hσ2 in a general linear model with stochastic regression coefficients denoted by y = X β + e . Firstly, the quadratic predictability of β′ H β + hσ2 is investigated to obtain a quadratic unbiased predictor (QUP) via a general method of structuring an unbiased estimator. This QUP is also optimal in some situations and therefore we hope it will be a fine predictor. To show this idea, we apply the Lagrange multipliers method to this problem and finally reach the expected conclusion through permutation matrix techniques. 相似文献
235.
We consider nonparametric estimation based on interval-censored competing risks data with masked failure cause. The generalized maximum likelihood estimator of the joint survival function of the failure time and the failure cause is studied under mixed case interval censorship and random partition masking. Strong consistency in the L 1(μ)-topology is established for some finite measure μ which is derived from the joint censoring and masking distribution. Under additional regularity assumptions we also establish the strong consistencies in the topologies of weak convergence, point-wise convergence, and uniform convergence. 相似文献
236.
The problem of missing values problem is common in all branches of statistics and especially in regression analysis. Here we consider estimation of the regression parameters in the presence of missingness in the response. The usual method is to replace the missing value by its predicted value based on the available observations without any correction for the disturbance term. Instead we suggest a method which corrects the usual predictor with a guess of the disturbance term based on the available residuals. Comparison between the two methods shows that the latter leads to better results. 相似文献
237.
Fisher scoring method is applied to get M-estimator (robust estimator) of parameters in mixed effects linear models. Then influence curvature is used to study perturbation diagnostics of variance of the error based on M-estimation. The grape sugar data is used to illustrate the results. 相似文献
238.
In this article, the zero-one inflated binomial mixed regression is proposed to model proportional data with large frequencies of both zeros and binomial denominators. Score tests for assessing both extra zeros and extra binomial denominators in proportional data are developed. The empirical levels and empirical powers of the score test statistics are evaluated using a simulation study. Finally, the application of the proposed model is illustrated on the whitefly data. 相似文献
239.
ABSTRACTTransformation of the response is a popular method to meet the usual assumptions of statistical methods based on linear models such as ANOVA and t-test. In this paper, we introduce new families of transformations for proportions or percentage data. Most of the transformations for proportions require 0 < x < 1 (where x denotes the proportion), which is often not the case in real data. The proposed families of transformations allow x = 0 and x = 1. We study the properties of the proposed transformations, as well as the performance in achieving normality and homoscedasticity. We analyze three real data sets to empirically show how the new transformation performs in meeting the usual assumptions. A simulation study is also performed to study the behavior of new families of transformations. 相似文献
240.