全文获取类型
收费全文 | 283篇 |
免费 | 1篇 |
专业分类
管理学 | 2篇 |
理论方法论 | 1篇 |
综合类 | 6篇 |
社会学 | 1篇 |
统计学 | 274篇 |
出版年
2020年 | 4篇 |
2019年 | 9篇 |
2018年 | 9篇 |
2017年 | 24篇 |
2016年 | 7篇 |
2015年 | 1篇 |
2014年 | 12篇 |
2013年 | 101篇 |
2012年 | 14篇 |
2011年 | 4篇 |
2010年 | 9篇 |
2009年 | 13篇 |
2008年 | 16篇 |
2007年 | 12篇 |
2006年 | 7篇 |
2005年 | 6篇 |
2004年 | 7篇 |
2003年 | 3篇 |
2002年 | 3篇 |
2001年 | 1篇 |
2000年 | 7篇 |
1999年 | 4篇 |
1998年 | 3篇 |
1992年 | 1篇 |
1990年 | 1篇 |
1985年 | 5篇 |
1979年 | 1篇 |
排序方式: 共有284条查询结果,搜索用时 15 毫秒
41.
Ahmed A. Soliman 《统计学通讯:理论与方法》2013,42(5):803-820
In this article, based on progressively Type-II censored samples from a heterogeneous population that can be represented by a finite mixture of two-component Rayleigh lifetime model, the problem of estimating the parameters and some lifetime parameters (reliability and hazard functions) are considered. Both Bayesian and maximum likelihood estimators are of interest. A class of natural conjugate prior densities is considered in the Bayesian setting. The Bayes estimators are obtained using both the symmetric (squared error) loss function, and the asymmetric (LINEX and General Entropy) loss functions. It has been seen that the estimators obtained can be easily evaluated for this type of censoring by using suitable numerical methods. Finally, the performance of the estimates have been compared on the basis of their simulated maximum square error via a Monte Carlo simulation study. 相似文献
42.
Ling-Yau Chan 《统计学通讯:理论与方法》2013,42(9-10):2281-2312
This is a survey article on known results about analytic solutions and numerical solutions of optimal designs for various regression models for experiments with mixtures. The regression models include polynomial models, models containing homogeneous functions, models containing inverse terms and ratios, log contrast models, models with quantitative variables, and mod els containing the amount of mixture, Optimality criteria considered include D-, A-, E-,φp- and Iλ-Optimalities. Uniform design and uniform optimal design for mixture components, and efficiencies of the {q,2} simplex-controid design are briefly discussed. 相似文献
43.
《随机性模型》2013,29(2):193-227
The Double Chain Markov Model is a fully Markovian model for the representation of time-series in random environments. In this article, we show that it can handle transitions of high-order between both a set of observations and a set of hidden states. In order to reduce the number of parameters, each transition matrix can be replaced by a Mixture Transition Distribution model. We provide a complete derivation of the algorithms needed to compute the model. Three applications, the analysis of a sequence of DNA, the song of the wood pewee, and the behavior of young monkeys show that this model is of great interest for the representation of data that can be decomposed into a finite set of patterns. 相似文献
44.
In this paper, WILKS'type-B integral equation is solved in the general form of a series of beta functions and a series of weighted gamma functions as proposed by WALD and BROOKNER 1941. The coefficients in both representations can be obtained by explicit recurrence relartions, therefore the results solve many distributional problems and have the fewest computational difficulties of any representation that has surfaced to date. The radius of convergence of the second series representation is given, whereas the convergence property of the first series representation is given, whereas the convergence property of the first series representation was studied by WALD and Brookner. The exact null distributions of WILKS' statistic A for testing the independence of several groups of variables and of V = -log A are given. The coefficients in all the series representration can be computed recursilvely and hence can be obtained easily with the help of modern computatinal facilities 相似文献
45.
The zero-inflated Poisson model and the decayed, missing and filled teeth index in dental epidemiology 总被引:4,自引:0,他引:4
D. Böhning E. Dietz P. Schlattmann L. Mendonça & U. Kirchner 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》1999,162(2):195-209
For frequency counts, the situation of extra zeros often arises in biomedical applications. This is demonstrated with count data from a dental epidemiological study in Belo Horizonte (the Belo Horizonte caries prevention study) which evaluated various programmes for reducing caries. Extra zeros, however, violate the variance–mean relationship of the Poisson error structure. This extra-Poisson variation can easily be explained by a special mixture model, the zero-inflated Poisson (ZIP) model. On the basis of the ZIP model, a graphical device is presented which not only summarizes the mixing distribution but also provides visual information about the overall mean. This device can be exploited to evaluate and compare various groups. Ways are discussed to include covariates and to develop an extension of the conventional Poisson regression. Finally, a method to evaluate intervention effects on the basis of the ZIP regression model is described and applied to the data of the Belo Horizonte caries prevention study. 相似文献
46.
Camilla Mondrup Andreassen 《统计学通讯:理论与方法》2018,47(10):2314-2326
We consider a particular generalization of the negative binomial distribution to the multivariate case obtained through a specification of the probability generating function as the negative power of a certain polynomial. The probability function itself has previously been derived for the two-dimensional case only, and inference in the multivariate negative binomial distribution has been restricted to the use of composite likelihood based on one- or two-dimensional marginals. In this article, we derive the three-dimensional probability function as a sum with all terms positive and study the range of possible parameter values. We illustrate the use of the three-dimensional distribution for modeling three correlated SAR images. 相似文献
47.
We propose a mixture of latent variables model for the model-based clustering, classification, and discriminant analysis of data comprising variables with mixed type. This approach is a generalization of latent variable analysis, and model fitting is carried out within the expectation-maximization framework. Our approach is outlined and a simulation study conducted to illustrate the effect of sample size and noise on the standard errors and the recovery probabilities for the number of groups. Our modelling methodology is then applied to two real data sets and their clustering and classification performance is discussed. We conclude with discussion and suggestions for future work. 相似文献
48.
Paul S. Horn 《Journal of statistical planning and inference》1985,11(3):267-276
A method for expanding the choices for fits of discrete data is given. The method is very simple: a breakpoint is chosen for the data set on either side of which two separate discrete distributions are fit. Thus, the method is a mixture of two discrete distributions. The method is appealing in light of the ease with which the likelihood equations simplify. For illustrative purposes, the method is used on the data set that motivated its conception. 相似文献
49.
Josef Schürle 《Statistical Papers》2005,46(3):433-449
An objective of Record Linkage is to link two data files by identifying common elements. A popular model for doing the separation
is the probabilistic one from Fellegi and Sunter. To estimate the parameters needed for the model usually a mixture model
is constructed and the EM algorithm is applied. For simplification, the assumption of conditional independence is often made.
This assumption says that if several attributes of elements in the data are compared, then the results of the comparisons
regarding the several attributes are independent within the mixture classes. A mixture model constructed with this assumption
has been often used. Within this article a straightforward extension of the model is introduced which allows for conditional
dependencies but is heavily dependent on the choice of the starting value. Therefore also an estimation procedure for the
EM algorithm starting value is proposed. The two models are compared empirically in a simulation study based on telephone
book entries. Particularly the effect of different starting values and conditional dependencies on the matching results is
investigated. 相似文献
50.
The real-parameter evolutionary Monte Carlo algorithm (EMC) has been proposed as an effective tool both for sampling from
high-dimensional distributions and for stochastic optimization (Liang and Wong, 2001). EMC uses a temperature ladder similar
to that in parallel tempering (PT; Geyer, 1991). In contrast with PT, EMC allows for crossover moves between parallel and
tempered MCMC chains. In the context of EMC, we introduce four new moves, which enhance its efficiency as measured by the
effective sample size. Secondly, we introduce a practical strategy for determining the temperature range and placing the temperatures
in the ladder used in EMC and PT. Lastly, we prove the validity of the conditional sampling step of the snooker algorithm,
a crossover move in EMC, which extends a result of Roberts and Gilks (1994). 相似文献