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Listar Estadística e Investigación Operativa por autor "Romero Morales, María Dolores"
Mostrando ítems 1-20 de 27
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Artículo
A biobjective method for sample allocation in stratified sampling
Carrizosa Priego, Emilio José; Romero Morales, María Dolores (Elsevier, 2007-03-01)The two main and contradicting criteria guiding sampling design are accuracy of estimators and sampling costs. In stratified ...
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Artículo
A biobjective method for sample allocation in stratified sampling
Carrizosa Priego, Emilio José; Romero Morales, María Dolores (ELSEVIER SCIENCE BV, 2006-02-16)The two main and contradicting criteria guiding sampling design are accuracy of estimators and sampling costs. In stratified ...
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Artículo
A nested heuristic for parameter tuning in support vector machines
Carrizosa Priego, Emilio José; Martín Barragán, Belén; Romero Morales, María Dolores (Elsevier, 2014-03)The default approach for tuning the parameters of a Support Vector Machine (SVM) is a grid search in the parameter space. ...
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Artículo
Binarized support vector machines
Carrizosa Priego, Emilio José; Martín Barragán, Belén; Romero Morales, María Dolores (INFORMS (Institute for Operations Research and Management Sciences), 2010)The widely used Support Vector Machine (SVM) method has shown to yield very good results in Supervised Classification ...
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Artículo
Clustering categories in support vector machines
Carrizosa Priego, Emilio José; Nogales Gómez, Amaya; Romero Morales, María Dolores (Elsevier, 2016-02)The support vector machine (SVM) is a state-of-the-art method in supervised classification. In this paper the Cluster ...
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Artículo
Combining minsum and minmax: A goal programming approach
Carrizosa Priego, Emilio José; Romero Morales, María Dolores (INST OPERATIONS RESEARCH MANAGEMENT SCIENCES, 1999-07-01)A number of methods for multiple-objective optimization problems (MOP) give as solution to MOP the set of optimal solutions ...
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Artículo
Detecting relevant variables and interactions in supervised classification
Carrizosa Priego, Emilio José; Martín Barragán, Belén; Romero Morales, María Dolores (Elsevier, 2011-08-16)The widely used Support Vector Machine (SVM) method has shown to yield good results in Supervised Classification problems. ...
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Tesis Doctoral
Enhancing Classification and Regression Tree-Based Models by means of Mathematical Optimization
Molero del Río, María Cristina (2022-12-19)This PhD dissertation bridges the disciplines of Operations Research and Machine Learning by developing novel Mathematical ...
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Artículo
Finding the principal points of a random variable
Carrizosa Priego, Emilio José; Conde Sánchez, Eduardo; Castaño Martínez, Antonia; Romero Morales, María Dolores (EDP Sciences, 2001)The p-principal points of a random variable X with finite second moment are those p points in R minimizing the expected ...
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Artículo
Heuristic approaches for support vector machines with the ramp loss
Carrizosa Priego, Emilio José; Nogales Gómez, Amaya; Romero Morales, María Dolores (Springer, 2014-03)Recently, Support Vector Machines with the ramp loss (RLM) have attracted attention from the computational point of view. ...
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Artículo
Interpreting clusters via prototype optimization
Carrizosa Priego, Emilio José; Kurishchenko, Kseniia; Marín, Alfredo; Romero Morales, María Dolores (Elsevier, 2021)In this paper, we tackle the problem of enhancing the interpretability of the results of Cluster Analy sis. Our goal is ...
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Tesis Doctoral
Mixed Integer Nonlinear Optimization. Applications to Competitive Location and Supervised Classification
Nogales Gómez, Amaya (2015-02-25)This PhD dissertation focuses on the study of Mixed Integer Nonlinear Programming (MINLP) problems [34] for two important ...
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Artículo
Multi-group support vector machines with measurement costs a biobjective approach
Carrizosa Priego, Emilio José; Martín Barragán, Belén; Romero Morales, María Dolores (Elsevier, 2008-03)Support Vector Machine has shown to have good performance in many practical classification settings. In this paper we ...
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Artículo
On Building Online Visualization Maps for News Data Streams by Means of Mathematical Optimization
Carrizosa Priego, Emilio José; Guerrero Lozano, Vanesa; Hardt, Daniel; Romero Morales, María Dolores (Mary Ann Liebert, INC, 2018-06-01)In this article we develop a novel online framework to visualize news data over a time horizon. First, we perform a Natural ...
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Artículo
On Mathematical Optimization for the visualization of frequencies and adjacencies as rectangular maps
Carrizosa Priego, Emilio José; Guerrero Lozano, Vanesa; Romero Morales, María Dolores (ELSEVIER SCIENCE BV, 2018-02-18)In this paper, we address the problem of visualizing a frequency distribution and an adjacency relation attached to a set ...
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Artículo
On optimal regression trees to detect critical intervals for multivariate functional data
Blanquero Bravo, Rafael; Carrizosa Priego, Emilio José; Molero Río, Cristina; Romero Morales, María Dolores (ScienceDirect, 2023-01-13)In this paper, we tailor optimal randomized regression trees to handle multivariate functional data. A compromise between ...
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Artículo
On sparse optimal regression trees
Blanquero Bravo, Rafael; Carrizosa Priego, Emilio José; Molero del Río, María Cristina; Romero Morales, María Dolores (Elsevier, 2021-12-18)In this paper, we model an optimal regression tree through a continuous optimization problem, where a compromise between ...
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Artículo
On the Selection of the Globally Optimal Prototype Subset for Nearest-Neighbor Classification
Carrizosa Priego, Emilio José; Martín Barragán, Belén; Plastria, Frank; Romero Morales, María Dolores (Informs, 2007-07-20)The nearest-neighbor classifier has been shown to be a powerful tool for multiclass classification. We explore both ...
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Tesis Doctoral
Programación matemática para las máquinas de vector de apoyo: mathematical programming for support vector machines
Martín Barragán, Belén (2006)En esta Tesis Doctoral, presentamos algunas propuestas en las que las herramientas de la Programación Matemática se usan ...
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Artículo
Semi-obnoxious location models: a global optimization approach
Romero Morales, María Dolores; Carrizosa Priego, Emilio José (Elsevier, 1997-10-16)In the last decades there has been an increasing interest in environmental topics. This interest has been reflected in ...