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Mostrando ítems 1-10 de 61
Artículo
Binarized support vector machines
(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 problems. Other methods such as Classification Trees have become more popular among practitioners than ...
Artículo
Maximal covering location problems on networks with regional demand
(Elsevier, 2016-10)
Covering problems are well studied in the Operations Research literature under the assumption that both the set of users and the set of potential facilities are finite. In this paper we address the following variant, which ...
Artículo
Continuous optimisation techniques for optimal aiming strategies in solar power tower plants
(PERGAMON-ELSEVIER SCIENCE LTD, 2019-01-01)
Optimising the aiming strategy is crucial for Solar Power Tower plants, in order to maximise the energy generated, whilst also preventing catastrophic damage to receiver components. In this work, a bi-objective ...
Artículo
A biobjective approach to recoverable robustness based on location planning
(ELSEVIER SCIENCE BV, 2017-02-16)
Finding robust solutions of an optimization problem is an important issue in practice, and various con- cepts on how to define the robustness of a solution have been suggested. The idea of recoverable robust- ness requires ...
Artículo
A global optimisation approach for parameter estimation of a mixture of double Pareto lognormal and lognormal distributions
(PERGAMON-ELSEVIER SCIENCE LTD, 2013-10-30)
The double Pareto Lognormal(dPlN) statistical distribution, defined interms of both an exponentiated skewed Laplace distribution and alog normal distribution, has proven suitable for fitting heavy tailed data. In this ...
Artículo
Minmax-distance approximation and separation problems: geometrical properties
(Springer, 2010-04-01)
A center hyperplane in the d-dimensional space minimizes the maximum of its distances from a finite set of points A with respect to possibly different gauges. In this note it is shown that a center hyperplane exists which ...
Artículo
p-facility Huff location problem on networks
(Elsevier, 2016-11-16)
The p-facility Huff location problem aims at locating facilities on a competitive environment so as to maximize the market share. While it has been deeply studied in the field of continuous location, in this paper we study ...
Artículo
Unequal probability sampling from a finite population: A multicriteria approach
(ELSEVIER SCIENCE BV, 2010-03-01)
In this note we address the problem of determining selection probabilities for multipurpose surveys, when the aim is the simultaneous minimization of variances for each variable under study. A characterization of the set ...
Artículo
Visualizing proportions and dissimilarities by space-filling maps: a large neighborhood search approach
(Elsevier, 2017-02)
In this paper we address the problem of visualizing a set of individuals, which have attached a statistical value given as a proportion, and a dissimilarity measure. Each individual is represented as a region within the ...
Artículo
On Building Online Visualization Maps for News Data Streams by Means of Mathematical Optimization
(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 Language Processing analysis, wherein the words are extracted, and their attributes, namely the ...