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Mostrando ítems 1-10 de 14
Artículo
A semidefinite programming approach for solving multiobjective linear programming
(Springer, 2014-03)
Several algorithms are available in the literature for finding the entire set of Pareto-optimal solutions in MultiObjective Linear Programming (MOLP). However, it has not been proposed so far an interior point algorithm ...
Artículo
Heuristic approaches for support vector machines with the ramp loss
(Springer, 2014-03)
Recently, Support Vector Machines with the ramp loss (RLM) have attracted attention from the computational point of view. In this technical note, we propose two heuristics, the first one based on solving the continuous relaxation ...
Artículo
Unreliable point facility location problems on networks
(Elsevier, 2014-03)
In this paper we study facility location problems on graphs under the most common criteria, such as, median, center and centdian, but we incorporate in the objective function some reliability aspects. Assuming that facilities ...
Artículo
Biobjective sparse principal component analysis
(Academic Press Inc., 2014-08-21)
Principal Components are usually hard to interpret. Sparseness is considered as one way to improve interpretability, and thus a trade-off between variance explained by the components and sparseness is frequently sought. ...
Artículo
Revisiting several problems and algorithms in continuous location with lp norms
(Springer, 2014-07)
This paper addresses the general continuous single facility location problems in finite dimension spaces under possibly different ℓp norms in the demand points. We analyze the difficulty of this family of problems and ...
Tesis Doctoral
Avances metodológicos en demografía
(2014-07-18)
El estudio del volumen, estructura, características y evolución de las poblaciones humanas es el objetivo de la Demografía, indispensable para el conocimiento de la realidad social en la que vivimos. El conocimiento de ...
Artículo
A nested heuristic for parameter tuning in support vector machines
(Elsevier, 2014-03)
The default approach for tuning the parameters of a Support Vector Machine (SVM) is a grid search in the parameter space. Different metaheuristics have been recently proposed as a more efficient alternative, but they have ...
Capítulo de Libro
La calidad de los medios y el uso de fuentes periodísticas en el periodismo de Proximidad. Estudio de la prensa de referencia local
(Asociación Española de Investigación en Comunicación, 2014)
La proximidad con la que se produce un acontecimiento a la sede de un medio de comunicación es determinante para evaluar el acceso que este hace a las fuentes de información. Y, siendo fácil este acceso, puede analizarse ...
Artículo
Linear separation and approximation by minimizing the sum of concave functions of distances
(Springer, 2014-03-01)
One recently proposed criterion to separate two data sets in Classification is to use a hyperplane that minimizes the sum of distances to it from all the misclassified data points, where misclassification means lying on ...
Artículo
New heuristic for harmonic means clustering
(Springer, 2014-05-06)
It is well known that some local search heuristics for K-clustering problems, such as k-means heuristic for minimum sum-of-squares clustering occasionally stop at a solution with a smaller number of clusters than the ...