Browsing by Author "Plastria, Frank"
Now showing items 1-20 of 22
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Article
A characterization of efficient points in constrained location problems with regional demand
(ELSEVIER SCIENCE BV, 1996-02-01)In this paper we characterize the set of efficient points in the planar point-objective location problem under a convex ...
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Article
Alternating local search based VNS for linear classification
(Springer, 2010-02)We consider the linear classification method consisting of separating two sets of points in d-space by a hyperplane. We ...
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Chapter of Book
Dimensionality Reduction for Classification: Comparison of Techniques and Dimension Choice
(Springer, 2008)We investigate the effects of dimensionality reduction using different techniques and different dimensions on six two-class ...
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Article
Dominators for multiple-objective quasiconvex maximization problems
(Springer, 2000-01-06)In this paper we address the problem of finding a dominator for a multiple-objective maximization problem with quasiconvex ...
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Article
Gauge Distances and Median Hyperplanes
(Springer, 2001-01-01)A median hyperplane in d-dimensional space minimizes the weighted sum of the distances from a finite set of points to it. ...
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Presentation
Improved results for the k-centrum straight-line location problem
(2004)The k-Centrum problem consists in finding a point that minimises the sum of the distances to the k farthest points out of ...
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Article
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 ...
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Article
Locating a Central Hunter on the Plane
(Springer, 2007)Protection, surveillance or other types of coverage services of mobile points call for different, asymmetric distance ...
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Article
Locating a semi-obnoxious covering facility with repelling polygonal regions
(ELSEVIER SCIENCE BV, 2013-11-01)A facility is to be located in the Euclidean plane to serve certain sites by covering them closely. Simultaneously, a set ...
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Article
Locating an undesirable facility by generalized cutting planes
(Informs, 1998-08-03)We address the problem of locating an undesirable facility within a compact set by minimizing a strictly decreasing ...
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Article
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 ...
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Article
Multi-instance classification through spherical separation and VNS
(PERGAMON-ELSEVIER SCIENCE LTD, 2013-05-17)A two-class classification problem is considered where the objects to be classified are bags of instances in d-space. The ...
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Article
On the Selection of the Globally Optimal Prototype Subset for Nearest-Neighbor Classification
(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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Article
Optimal expected-distance separating halfspace
(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 ...
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Article
Optimal location and design of a competitive facility
(Springer, 2004-06)A single facility has to be located in competition with fixed existing facilities of similar type. Demand is supposed to ...
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PhD Thesis
Optimization-based methods for classification and regression problems with imprecise data
(2008)En esta tesis, desarrollamos varias herramientas para resolver problemas de clasificación y regresión donde los elementos ...
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Article
Polynomial algorithms for parametric minquantile and maxcovering planar location problems with locational constraints
(Springer, 1998-12-01)A location is sought within some convex region of the plane for the central site of some public service to a finite number ...
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Presentation
El problema del anti-k-centrum en grafos
(Alberto Márquez, 2002) -
Article
Single-facility huff location problems on networks
(Springer, 2013-09-17)Huff location problems have been extensively analyzed within the field of competitive continuous location. In this work, ...
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Article
The determination of a "least quantile of squares regression line" for all quantiles
(Elsevier Science, 1994-09-01)Least median of squares regression has shown to be an extremely useful tool in robust regression analysis. In this note, ...