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Listar Estadística e Investigación Operativa por autor "Ramírez Cobo, Josefa"
Mostrando ítems 1-17 de 17
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Artículo
A cost-sensitive constrained Lasso
Blanquero Bravo, Rafael; Carrizosa Priego, Emilio José; Ramírez Cobo, Josefa; Sillero Denamiel, María Remedios (Springer, 2020-03-02)The Lasso has become a benchmark data analysis procedure, and numerous variants have been proposed in the literature. ...
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Artículo
A global optimisation approach for parameter estimation of a mixture of double Pareto lognormal and lognormal distributions
Carrizosa Priego, Emilio José; Jocković, Jelena; Ramírez Cobo, Josefa (PERGAMON-ELSEVIER SCIENCE LTD, 2013-10-30)The double Pareto Lognormal(dPlN) statistical distribution, defined interms of both an exponentiated skewed Laplace ...
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Artículo
A sparsity-controlled vector autoregressive model
Carrizosa Priego, Emilio José; Olivares Nadal, Alba Victoria; Ramírez Cobo, Josefa (Oxford University Press, 2017-04)Vector autoregressive (VAR) models constitute a powerful and well studied tool to analyze multivariate time series. Since ...
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Artículo
Analysis of an aggregate loss model in a Markov renewal regime
Ramírez Cobo, Josefa; Carrizosa Priego, Emilio José; Lillo Rodríguez, Rosa Elvira (ELSEVIER SCIENCE INC, 2020-12-22)In this article we consider an aggregate loss model with dependent losses. The loss oc- currence process is governed by a ...
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Tesis Doctoral
Computational Methods for the Analysis of Complex Data
Sillero Denamiel, María Remedios (2021-07-07)This PhD dissertation bridges the disciplines of Operations Research and Statistics to develop novel computational methods ...
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Artículo
Constrained Naïve Bayes with application to unbalanced data classification
Blanquero Bravo, Rafael; Carrizosa Priego, Emilio José; Ramírez Cobo, Josefa; Sillero Denamiel, María Remedios (Springer, 2021-09-15)The Naïve Bayes is a tractable and efficient approach for statistical classification. In general classification problems, ...
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Artículo
Cost-sensitive feature selection for support vector machines
Benítez Peña, Sandra; Blanquero Bravo, Rafael; Carrizosa Priego, Emilio José; Ramírez Cobo, Josefa (Elsevier, 2018-03)Feature Selection (FS) is a crucial procedure in Data Science tasks such as Classification, since it identifies the ...
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Artículo
Embedding the production policy in location-allocation decisions
Carrizosa Priego, Emilio José; Olivares Nadal, Alba Victoria; Ramírez Cobo, Josefa (Springer, 2019-11-21)This paper investigates how the production policy, as well as other factors, affect the facility location-allocation ...
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Artículo
Integer constraints for enhancing interpretability in linear regression
Carrizosa Priego, Emilio José; Olivares Nadal, Alba Victoria; Ramírez Cobo, Josefa (Institut d´Estadística de Catalunya (Idescat), 2020-04-01)One of the main challenges researchers face is to identify the most relevant features in a prediction model. As a ...
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Tesis Doctoral
New models and methods for classification and feature selection. a mathematical optimization perspective
Benítez Peña, Sandra (2021-07-27)The objective of this PhD dissertation is the development of new models for Supervised Classification and Benchmarking, ...
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Artículo
On support vector machines under a multiple-cost scenario
Benítez Peña, Sandra; Blanquero Bravo, Rafael; Carrizosa Priego, Emilio José; Ramírez Cobo, Josefa (Springer, 2018-07-31)Support vector machine (SVM) is a powerful tool in binary classification, known to attain excellent misclassification ...
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Artículo
Robust newsvendor problem with autoregressive demand
Carrizosa Priego, Emilio José; Olivares Nadal, Alba Victoria; Ramírez Cobo, Josefa (Elsevier, 2016-04)This paper explores the classic single-item newsvendor problem under a novel setting which combines temporal dependence ...
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Ponencia
Robust p-median problem with vector autoregressive demands
Carrizosa Priego, Emilio José; Olivares Nadal, Alba Victoria; Ramírez Cobo, Josefa (2015) -
Artículo
The Markovian arrival process: A statistical model for daily precipitation amounts
Ramírez Cobo, Josefa; Marzo Artigas, Xavier; Olivares Nadal, Alba Victoria; Alvarez Francoso, José; Carrizosa Priego, Emilio José; Pita López, María Fernanda (ELSEVIER SCIENCE BV, 2013-12-21)The Markovian arrival process (MAP) is a stochastic process that allows for modeling dependent and non-exponentially ...
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Artículo
Time series interpolation via global optimization of moments fitting
Carrizosa Priego, Emilio José; Olivares Nadal, Alba Victoria; Ramírez Cobo, Josefa (ELSEVIER SCIENCE BV, 2013-04-16)Most time series forecasting methods assume the series has no missing values. When missing values exist, interpolation ...
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Artículo
Variable selection for Naïve Bayes classification
Blanquero Bravo, Rafael; Carrizosa Priego, Emilio José; Ramírez Cobo, Josefa; Sillero Denamiel, María Remedios (Pergamon-Elsevier Science Ltd., 2021-07-06)The Naïve Bayes has proven to be a tractable and efficient method for classification in multivariate analysis. However, ...
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Artículo
Variable selection for Naïve Bayes classification
Blanquero Bravo, Rafael; Carrizosa Priego, Emilio José; Ramírez Cobo, Josefa; Sillero Denamiel, María Remedios (Elsevier, 2021)The Naïve Bayes has proven to be a tractable and efficient method for classification in multivariate analysis. However, ...