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Listar Revistas UNAL por áreas de conocimiento "31 Colecciones de estadística general / Statistics"
Mostrando documentos 1-20 de 83
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A Bimodal Extension of the Generalized Gamma Distribution
A bimodal extension of the generalized gamma distribution is proposed by using a mixing approach. Some distributional properties of the new distribution are investigated. The maximum likelihood (ML) estimators for the ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
A Bivariate Model based on Compound Negative Binomial Distribution
A new bivariate model is introduced by compounding negative binomial and geometric distributions. Distributional properties, including joint, marginal and conditional distributions are discussed. Expressions for the product ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
A comparative study of the Gini coefficient estimators based on the linearization and U-statistics Methods
In this paper, we consider two well-known methods for analysis of the Gini index, which are U-statistics and linearization for some incomedistributions. In addition, we evaluate two different methods for some properties ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
A Graphical Diagnostic Test for Two-Way Contingency Tables
We propose and illustrate a new graphical method to perform diagnostic analyses in two-way contingency tables. In this method, one observation is added or removed from each cell at a time, whilst the other cells are held ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
A Methodology for Biplots Based on Bootstrapping with R
A biplot is a graphical representation of two-mode multivariate data based on markers for rows and columns often provided in a two-dimensional space. These markers define parameters that help to interpret goodness of fit, ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
A Multi-Agent Proposal for the Resolution of BIBD instances
The problem with designing balanced incomplete blocks (BIBD) is enclosed within the combinatorial optimization approach that has been extensively used in experimental design. The present proposal addresses thi problem by ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
A Note on Generalized Exponential Type Estimator for Population Variance in Survey Sampling
Recently a new generalized estimator for population variance using information on the auxiliary variable has been introduced by Asghar, Sanaullah and Hanif (2014). In that paper there was some inaccuracy in the bias ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
A Review of Estimation of Key Parameters and Lead Time in Cancer Screening
Early detection combined with effective treatments are the only ways to fight against cancer, and cancer screening is the primary technique for early detection. Although mass cancer screening has been carried out for ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
A Study of Cumulative Quantity Control Chart for a Mixture of Rayleigh Model under a Bayesian Framework
This study deals with the cumulative charting technique based on a simple and a mixture of Rayleigh models. The respective charting schemes are referred as the SRCQC-chart and the MRCQC-chart. These are stimulated from ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
A Trinomial Difference Distribution
A trinomial difference distribution is defined and its distributional properties are illustrated. This distribution present the binomial difference distribution as a special case. The moment estimators and maximum ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
A Two Parameter Discrete Lindley Distribution
In this article we have proposed and discussed a two parameter discrete Lindley distribution. The derivation of this new model is based on a two step methodology i.e. mixing then discretizing, and can be viewed as a ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
Accounting for Model Selection Uncertainty: Model Averaging of Prevalence and Force of Infection Using Fractional Polynomials
In most applications in statistics the true model underlying data generation mechanisms is unknown and researchers are confronted with the critical issue of model selection uncertainty. Often this uncertainty is ignored ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
Alpha-Skew Generalized t Distribution
The alpha-skew normal (ASN) distribution has been proposed recently in the literature by using standard normal distribution and a skewing approach. Although ASN distribution is able to model both skew and bimodal data, it ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
Artificial Neuronal Networks: A Bayesian Approach Using Parallel Computing
An Artificial Neural Network (ANN) is a learning paradigm and automatic processing inspired in the biological behavior of neurons and the brain structure. The brain is a complex system; its basic processing unit are the ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
Asymptotic Information Measures Discrimination of Non-Stationary Time Series Based on Wavelet Domain
This article is concerned with the problem of discrimination between two classes of locally stationary time series based on minimum discrimination information. We view the observed signals as realizations of Gaussian ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
Bayesian Analysis of the 3-Component Mixture of Exponential Distribution Assuming the Non-Informative Priors
Bayesian analysis of the 3-component mixture of an Exponential distribution under type-I right censoring scheme is considered in this paper. The Bayes estimators and posterior risks for the unknown parameters are derived ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
Bayesian Analysis of the Heterogeneity of Literary Style
We proposed statistical analysis of the heterogeneity of literary style in a set of texts that simultaneously use different stylometric characteristics, like word length and the frequency of function words. The data set ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
Bayesian Estimation for the Centered Parameterization of the Skew-Normal Distribution
The skew-normal (SN) distribution is a generalization of the normal distribution, where a shape parameter is added to adopt skewed forms. The SN distribution has some of the properties of a univariate normal distribution, ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
Bimodal Regression Model
Regression analysis is a technique widely used in different areas ofhuman knowledge, with distinct distributions for the error term. Itis the case, however, that regression models with bimodal responsesor, equivalently, ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística. -
Classical and Bayesian Estimation of Reliability in Multicomponent Stress-Strength Model Based on Weibull Distribution
In this study, we consider a multicomponent system which has k independent and identical strength components X1,...,Xk and each component is exposed to a common random stress Y when the underlying distributions are Weibull. ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Estadística.
