نتایج جستجو برای: log regression
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Background & Objectives: Although Cox regression is commonly used to detect relationships between patient survival and demographic/clinical variables, there are situations where parametric models can yield more accurate results. The objective of this study was to compare two survival regression methods, namely Cox regression and parametric models, in patients with gastric carcinoma registered a...
reservoir permeability is a critical parameter for characterization of the hydrocarbon reservoirs. in fact, determination of permeability is a crucial task in reserve estimation, production and development. traditional methods for permeability prediction are well log and core data analysis which are very expensive and time-consuming. well log data is an alternative approach for prediction of pe...
In this article, a multivariate extension of the unit-sinh-normal (USHN) distribution is presented. The new distribution, which obtained from conditionally specified distributions methodology, absolutely continuous, and its marginal are univariate USHN. properties USHN studied in detail, statistical inference carried out classical approach using maximum likelihood method. suitable for modeling ...
Abstract Relative risks are estimated to assess associations and effects due their ease of interpretability, e.g., in epidemiological studies. Fitting log-binomial regression models allows use the coefficients directly infer relative risks. The estimation these models, however, is complicated because constraints which have be imposed on parameter space. In this paper we systematically compare d...
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