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Maximizing proportions of correct classifications in binary logistic regression

Hadjicostas, Petros - In: Journal of Applied Statistics 33 (2006) 6, pp. 629-640

addition, we give results that allow us to get all cut-off points that maximize a weighted combination of specificity and … sensitivity. In addition, we discuss measures of association between predicted probabilities and observed responses, and, in …

Persistent link: https://www.econbiz.de/10005458138

Testing the equality of diagnostic effectiveness of one measure with respect to k different features

Martinez-Camblor, Pablo; Yanez, Aina - In: Journal of Applied Statistics 36 (2009) 4, pp. 359-367

In several cases the same measurement is used as a marker for two or more population features, and it is useful to test whether this measurement has the same diagnostic effectiveness with respect to different features. In this paper we use the area under receiver operating characteristic curve...

Persistent link: https://www.econbiz.de/10004992272

Risk of Error and the Kappa Coefficient of a Binary Diagnostic Test in the Presence of Partial Verification

Nofuentes, J. A. Roldan; Castillo, J. D. Luna Del - In: Journal of Applied Statistics 34 (2007) 8, pp. 887-898

The accuracy of a binary diagnostic test is usually measured in terms of its sensitivity and its specificity, or …

Persistent link: https://www.econbiz.de/10005141265

Evaluations of FWER-controlling methods in multiple hypothesis testing

Hwang, Yi-Ting; Lai, Jia-Jung; Ou, Shyh-Tyan - In: Journal of Applied Statistics 37 (2010) 10, pp. 1681-1694

rate, the false non-discovery rate, the sensitivity and the specificity. The results can provide guidance on how to select …

Persistent link: https://www.econbiz.de/10008674984

Regularity in individual shopping trips: implications for duration models in marketing

Bijwaard, Govert - In: Journal of Applied Statistics 37 (2010) 11, pp. 1931-1945

Most models for purchase-timing behavior of households do not take into account that many households have regular and non-shopping days. We propose a statistical model for purchase timing that exploits information on the shopping days of households. The model is formulated in a counting process...

Persistent link: https://www.econbiz.de/10008674938

The diagnostic accuracy of a composite index increases as the number of partitions of the components increases and when specific weights are assigned to each component

Kourlaba, Georgia; Panagiotakos, Demosthenes - In: Journal of Applied Statistics 37 (2010) 4, pp. 537-554

to compare the sensitivity, specificity and area under the ROC curve (AUC) of indices constructed using equal number of … regression model for each component was proposed as potential weight. The current simulation results showed that the sensitivity …, specificity and AUC of an index increase as the number of partitions of components increases. However, the rate that the …

Persistent link: https://www.econbiz.de/10008503026

A concentration study of principal components

Benasseni, Jacques - In: Journal of Applied Statistics 32 (2005) 9, pp. 947-957

Influence functions are commonly used as diagnostic tools in order to investigate sensitivity aspects in principal … component analysis. This paper suggests a practical alternative for the eigenvalues by introducing a sensitivity measure derived …

Persistent link: https://www.econbiz.de/10005639729