Now showing items 180-199 of 275

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      Necessary and sufficient optimality conditions for vector equilibrium problems on Hadamard manifolds  [Article]

      Ruiz Garzón, Gabriel; Osuna Gómez, Rafaela; Ruiz Zapatero, Jaime (MDPI, 2019-08)
      The aim of this paper is to show the existence and attainability of Karush-Kuhn-Tucker optimality conditions for weakly efficient Pareto points for vector equilibrium problems with the addition of constraints in the novel ...
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      New methods and results in the optimisation of solar power tower plants  [PhD Thesis]

      Ashley, Thomas Ian (2019-12-03)
      Renewable energy technology has seen great advances in recent decades, combined with an ever increasing interest in the literature. Solar Power Tower (SPT) plants are a form of Concentrating Solar Power (CSP) technology ...
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      New models for the location of controversial facilities: A bilevel programming approach  [Article]

      Labbé, Martine; Leal Palazón, Marina; Puerto Albandoz, Justo (Elsevier, 2019-07)
      Motivated by recent real-life applications in Location Theory in which the location decisions generate controversy, we propose a novel bilevel location model in which, on the one hand, there is a leader that chooses among ...
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      New results on minimax regret single facility ordered median location problems on networks  [Article]

      Puerto Albandoz, Justo; Rodríguez Chía, Antonio Manuel; Tamir, Arie (Springer, 2007)
      We consider the single facility ordered median location problem with uncertainty in the parameters (weights) defining the objective function. We study two cases. In the first case the uncertain weights belong to a region ...
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      Nuevos tests para contrastar la bondad de modelos arma y marma de series temporales  [PhD Thesis]

      Hervás Martínez, César (1985)
      La presente memoria consta de 3 capítulos en donde se realizan estudios de los problemas de contraste de hipótesis acerca de la bondad de modelos ARMA y MARMA de series temporales. ... Nuestro trabajo se ha centrado en el ...
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      Nupcialidad  [Chapter of Book]

      Arroyo Pérez, Andrés (Instituto Nacional de Estadística, 2003)
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      On a new NBUE property in multivariate sense: an application  [Article]

      Fernández Ponce, José María; Pellerey, Franco; Rodríguez Griñolo, María del Rosario (Elsevier, 2011-12-01)
      Multivariate lifetime data frequently arise so it is important to consider different multivariate distributions that could be used to model aging concepts. The generalization of univariate versions has two main problems. One ...
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      On location-allocation problems for dimensional facilities  [Article]

      Mallozzi, Lina; Puerto Albandoz, Justo; Rodríguez Madrena, Moisés (Springer, 2019)
      This paper deals with a bilevel approach of the location-allocation problem with dimensional facilities. We present a general model that allows us to consider very general shapes of domains for the dimensional facilities ...
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      On minimax-regret Huff location models  [Article]

      Bello Garboza, Lenys; Blanquero Bravo, Rafael; Carrizosa Priego, Emilio José (Elsevier, 2011-01)
      We address the following single-facility location problem: a firm is entering into a market by locating one facility in a region of the plane. The demand captured from each user by the facility will be proportional to the ...
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      On the exponential cardinality of FDS for the ordered p-median problem  [Article]

      Puerto Albandoz, Justo; Rodríguez Chía, Antonio Manuel (Elsevier, 2005)
      We study finite dominating sets (FDS) for the ordered median problem. This kind of problems allows to deal simultaneously with a large number of models. We show that there is no valid polynomial size FDS for the general ...
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      On the Newton method for solving fuzzy optimization problems  [Article]

      Chalco Cano, Yurilev; Nunes Silva, Geraldo; Rufián Lizana, Antonio (Elsevier, 2015-08-01)
      In this article we consider optimization problems where the objectives are fuzzy functions (fuzzy-valued functions). For this class of fuzzy optimization problems we discuss the Newton method to find a non-dominated solution. ...
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      Optimal arrangements of hyperplanes for SVM-based multiclass classification  [Article]

      Blanco Izquierdo, Víctor; Japón Sáez, Alberto; Puerto Albandoz, Justo (Springer, 2019-07)
      In this paper, we present a novel approach to construct multiclass classifiers by means of arrangements of hyperplanes. We propose different mixed integer (linear and non linear) programming formulations for the problem ...
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      Optimal cluster selection probabilities to estimate the finite population distribution function under PPS cluster sampling  [Article]

      Mayor Gallego, José Antonio (Springer, 2002-06)
      We study the estimation of the finite population distribution function under several sampling strategies based on a PPS cluster sampling, that is to say, with cluster selection probabilities proportional to size. For the ...
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      Optimal expected-distance separating halfspace  [Article]

      Carrizosa Priego, Emilio José; Plastria, Frank (INFORMS (Institute for Operations Research and Management Sciences), 2008-08)
      One recently proposed criterion to separate two datasets in discriminant analysis, is to use a hyperplane which minimises the sum of distances to it from all the misclassified data points. Here all distances are supposed ...
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      Optimal location and design of a competitive facility  [Article]

      Plastria, Frank; Carrizosa Priego, Emilio José (Springer, 2004-06)
      A single facility has to be located in competition with fixed existing facilities of similar type. Demand is supposed to be concentrated at a finite number of points, and consumers patronise the facility to which they are ...
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      Optimality and duality on Riemannian manifolds  [Article]

      Ruiz Garzón, Gabriel; Osuna Gómez, Rafaela; Rufián Lizana, Antonio; Hernández Jiménez, Beatriz (Mathematical Society of the Republic of China, 2018-10)
      Our goal in this paper is to translate results on function classes that are characterized by the property that all the Karush-Kuhn-Tucker points are efficient solutions, obtained in Euclidean spaces to Riemannian manifolds. ...
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      Optimization of multiple receivers solar power tower systems  [Article]

      Carrizosa Priego, Emilio José; Domínguez Bravo, Carmen Ana; Fernández Cara, Enrique; Quero García, Manuel (Elsevier, 2015-10)
      In this article a new procedure to optimize the design of a Multiple Receivers Solar Power Tower system is presented. The proposed procedure allows to optimize the different receivers (height, aperture tilt angle, azimuth ...
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      Optimization-based methods for classification and regression problems with imprecise data  [PhD Thesis]

      Gordillo Santofimia, José Feliciano (2008)
      En esta tesis, desarrollamos varias herramientas para resolver problemas de clasificación y regresión donde los elementos del conjunto de datos no son vectores de características puntuales, sino conjuntos en Rd con ciertas ...
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      Order statistics from overlapping samples: bivariate densities and regression properties  [Article]

      López Blázquez, José Fernando; Su, Nan-Cheng; Wesołowski, Jacek (Taylor & Francis, 2019)
      In this paper we are interested in the joint distribution of two order statistics from overlapping samples. We give an explicit formula for the distribution of such a pair of random variables under the assumption that the ...
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      Ordered median hub location problems with capacity constraints  [Article]

      Puerto Albandoz, Justo; Ramos Gallego, Ana Belén; Rodríguez Chía, Antonio Manuel; Sánchez Gil, María Carmen (Elsevier, 2015-06-15)
      The Single Allocation Ordered Median Hub Location problem is a recent hub model introduced in [36] J. Puerto, A.B. Ramos, and A.M. Rodríguez-Chía. Single-Allocation Ordered Median Hub Location Problems. Computers and ...