Statistical Methodology最新文献_第4页

Notes on estimation in Poisson frequency data under an incomplete block crossover design 不完全块交叉设计下泊松频率数据估计的注意事项

Statistical Methodology Pub Date : 2016-09-01 DOI: 10.1016/j.stamet.2016.01.007

Kung-Jong Lui

引用次数: 3

On the dynamic cumulative residual quantile entropy ordering 关于动态累积残差分位数熵排序

Statistical Methodology Pub Date : 2016-09-01 DOI: 10.1016/j.stamet.2016.01.008

Dian-Tong Kang , Lei Yan

引用次数: 10

Rank-based kernel estimation of the area under the ROC curve 基于秩的核估计在ROC曲线下的面积

Statistical Methodology Pub Date : 2016-09-01 DOI: 10.1016/j.stamet.2016.04.001

Jingjing Yin, Yi Hao, Hani Samawi, Haresh Rochani

{"title":"Rank-based kernel estimation of the area under the ROC curve","authors":"Jingjing Yin, Yi Hao, Hani Samawi, Haresh Rochani","doi":"10.1016/j.stamet.2016.04.001","DOIUrl":"10.1016/j.stamet.2016.04.001","url":null,"abstract":"<div>In medical diagnostics, the ROC curve is the graph of sensitivity against 1-specificity as the diagnostic threshold runs through all possible values. The ROC curve and its associated summary indices are very useful for the evaluation of the discriminatory ability of biomarkers/diagnostic tests with continuous measurements. Among all summary indices, the area under the ROC curve (AUC) is the most popular diagnostic accuracy index, which has been extensively used by researchers for biomarker evaluation and selection. Sometimes, taking the actual measurements of a biomarker is difficult and expensive, whereas ranking them without actual measurements can be easy. In such cases, ranked set sampling based on judgment order statistics would provide more representative samples yielding more accurate estimation. In this study, Gaussian kernel is utilized to obtain a nonparametric estimate of the AUC. Asymptotic properties of the AUC estimates are derived based on the theory of U-statistics. Intensive simulation is conducted to compare the estimates using ranked set samples versus simple random samples. The simulation and theoretical derivation indicate that ranked set sampling is generally preferred with smaller variances and mean squared errors (MSE). The proposed method is illustrated via a real data analysis.</div>","PeriodicalId":48877,"journal":{"name":"Statistical Methodology","volume":"32 ","pages":"Pages 91-106"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.stamet.2016.04.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55093373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Latent class analysis of incomplete data via an entropy-based criterion 通过基于熵的标准对不完整数据进行潜在类分析

Statistical Methodology Pub Date : 2016-09-01 DOI: 10.1016/j.stamet.2016.04.004

Chantal Larose , Ofer Harel , Katarzyna Kordas , Dipak K. Dey

引用次数: 28

Bayesian optimal cluster designs 贝叶斯最优聚类设计

Statistical Methodology Pub Date : 2016-09-01 DOI: 10.1016/j.stamet.2016.02.002

Satya Prakash Singh, Siuli Mukhopadhyay

引用次数: 8

A note on domains of attraction of the limit laws of intermediate order statistics under power normalization 幂归一化下中阶统计量极限律的吸引域注记

Statistical Methodology Pub Date : 2016-07-01 DOI: 10.1016/j.stamet.2016.01.001

H.M. Barakat, A.R. Omar

引用次数: 1

A new skew integer valued time series process 一种新的斜整数值时间序列过程

Statistical Methodology Pub Date : 2016-07-01 DOI: 10.1016/j.stamet.2016.01.002

Marcelo Bourguignon , Klaus L.P. Vasconcellos

引用次数: 10

On a better lower bound for the frequentist probability of coverage of Bayesian credible intervals in restricted parameter spaces 有限参数空间中贝叶斯可信区间覆盖的频率概率的一个较好的下界

Statistical Methodology Pub Date : 2016-07-01 DOI: 10.1016/j.stamet.2016.01.006

Ehssan Ghashim , Éric Marchand , William E. Strawderman

{"title":"On a better lower bound for the frequentist probability of coverage of Bayesian credible intervals in restricted parameter spaces","authors":"Ehssan Ghashim , Éric Marchand , William E. Strawderman","doi":"10.1016/j.stamet.2016.01.006","DOIUrl":"10.1016/j.stamet.2016.01.006","url":null,"abstract":"<div>For estimating a lower restricted parametric function in the framework of Marchand and Strawderman (2006), we show how <math><mrow><mo>(</mo><mn>1</mn><mo>−</mo><mi>α</mi><mo>)</mo></mrow><mo>×</mo><mn>100</mn><mi>%</mi></math> Bayesian credible intervals can be constructed so that the frequentist probability of coverage is no less than <math><mn>1</mn><mo>−</mo><mfrac><mrow><mn>3</mn><mi>α</mi></mrow><mrow><mn>2</mn></mrow></mfrac></math>. As in Marchand and Strawderman (2013), the findings are achieved through the specification of the spending function of the Bayes credible interval and apply to an “equal-tails” modification of the HPD procedure among others. Our results require a logconcave assumption for the distribution of a pivot, and apply to estimating a lower bounded normal mean with known variance, and to further examples include lower bounded scale parameters from Gamma, Weibull, and Fisher distributions, with the latter also applicable to random effects analysis of variance.</div>","PeriodicalId":48877,"journal":{"name":"Statistical Methodology","volume":"31 ","pages":"Pages 43-57"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.stamet.2016.01.006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55093303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

On testing local hypotheses via local divergence 关于通过局部散度检验局部假设

Statistical Methodology Pub Date : 2016-07-01 DOI: 10.1016/j.stamet.2016.01.003

G. Avlogiaris , A. Micheas , K. Zografos

引用次数: 6

Autoregressive conditional negative binomial model applied to over-dispersed time series of counts 自回归条件负二项模型在过分散计数时间序列中的应用

Statistical Methodology Pub Date : 2016-07-01 DOI: 10.1016/j.stamet.2016.02.001

Cathy W.S. Chen , Mike K.P. So , Jessica C. Li , Songsak Sriboonchitta

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引用次数: 26