Publications

Displaying 826 - 850 of 1351

Publication	Date
A survey on applications of the harmony search algorithm Authors: Miren Nekane Bilbao,Diana Manjarres,Sancho Salcedo-Sanz,Zong Woo Geem,Itziar Landa-Torres,J. Del Ser,Sergio Gil-Lopez This paper thoroughly reviews and analyzes the main characteristics and application portfolio of the so-called Harmony Search algorithm, a meta-heuristic approach that has been shown to achieve excellent results in a wide range of optimization problems. As evidenced by a number of studies, this… Elsevier BV	2013-09-01
On the Taxonomy of Optimization Problems Under Estimation of Distribution Algorithms Authors: Roberto Santana,Alexander Mendiburu,Carlos Echegoyen,Jose A. Lozano Understanding the relationship between a search algorithm and the space of problems is a fundamental issue in the optimization field. In this paper, we lay the foundations to elaborate taxonomies of problems under estimation of distribution algorithms (EDAs). By using an infinite population model… MIT Press	2013-09-01
Selectional Preferences for Semantic Role Classification Authors: Beñat Zapirain,Eneko Agirre,Lluís Màrquez,Mihai Surdeanu This paper focuses on a well-known open issue in Semantic Role Classification (SRC) research: the limited influence and sparseness of lexical features. We mitigate this problem using models that integrate automatically learned selectional preferences (SP). We explore a range of models based on… MIT Press - Journals	2013-09-01
On the design of a novel joint network-channel coding scheme for the multiple access relay channel Authors: Mikel Hernaez,J. Del Ser,Pedro M. Crespo This paper proposes a novel joint non-binary network-channel code for the Time-Division Decode-and-Forward Multiple Access Relay Channel (TD-DF-MARC), where the relay linearly combines -- over a non-binary finite field -- the coded sequences from the source nodes. A method based on an EXIT chart… Institute of Electrical and Electronics Engineers (IEEE)	2013-08-01
Fatigue Analysis of Offshore Wind Turbines on Fixed Support Structures Authors: Alati N.,Nava V.,Failla G.,Arena F.,Santini A. A stochastic time domain fatigue analysis is pursued on steel tripod and jacket support structures for offshore wind turbines, following the basic concepts of recently validated simplified linear analyses. A set of environmental lumped load cases with corresponding probabilities of occurrence is… Trans Tech Publications, Ltd.	2013-07-31
Information seeking in digital cultural heritage with PATHS Authors: Eneko Agirre,Arantxa Otegi,Aitor Soroa,Samuel Fernando,Paula Goodale,Jillian R. Griffiths,Mark M. Hall,Paul Clough,Kate Fernie,Runar Bergheim,Mark Stevenson Current Information Retrieval systems for digital cultural heritage support only the actual search aspect of the information seeking process. This demonstration presents the second PATHS system which provides the exploration, analysis, and sense-making features to support the full information… ACM	2013-07-28
One-way urban traffic reconfiguration using a multi-objective harmony search approach Authors: J. Del Ser,Sergio Gil-Lopez,A. Pastor-Sánchez,Jose A. Portilla-Figueras,Sancho Salcedo-Sanz,Diana Manjarres The use of intelligent optimization systems has been a major topic of research in the last few years for improving the existing urban infrastructure, the traffic optimization and the mobility of citizens. These techniques are of great importance in the analysis and optimization of transportation… Elsevier BV	2013-07-01
A spatial agent-based model for assessing strategies of adaptation to climate and tourism demand changes in an alpine tourism destination Authors: S. Balbi,C. Giupponi,P. Perez,ALBERTI, Marco A vast body of literature suggests that the European Alpine Region is amongst the most sensitive socio-ecosystems to climate change impacts. Our model represents the winter tourism socio-ecosystem of Auronzo di Cadore, located in the Dolomites (Italy), which economic and environmental conditions… Elsevier BV	2013-07-01
Sensitivity analysis for the appraisal of hydrofractures in horizontal wells with borehole resistivity measurements Authors: Pardo, D.,Torres-Verdín, C. We numerically evaluate the possibility of using borehole electromagnetic measurements to diagnose and quantify hydraulic fractures that have been artificially generated in a horizontal well. Hydrofractures are modeled as thin disks perpendicular to the well and filled with either sand-based or… Society of Exploration Geophysicists	2013-07-01
Frequency-domain finite-element simulations of 2D sonic wireline borehole measurements acquired in fractured and thinly bedded formations Authors: David Pardo,Paweł J. Matuszyk,Carlos Torres-Verdín We simulated wireline borehole sonic waveforms to appraise modal frequency dispersions across fractured and thinly bedded formations. Simulations included monopole and dipole sources of excitation and explicitly took into account the borehole, the mandrel tool, and casing whenever present.… Society of Exploration Geophysicists	2013-07-01
Use of generalised additive models to categorise continuous variables in clinical prediction Authors: Barrio Beraza, Irantzu,Arostegui Madariaga, Inmaculada,Quintana López, José María,IRYSS-COPD Group In medical practice many, essentially continuous, clinical parameters tend to be categorised by physicians for ease of decision-making. Indeed, categorisation is a common practice both in medical research and in the development of clinical prediction rules, particularly where the ensuing models are… Springer Science and Business Media LLC	2013-06-26
Atmospheric dynamics of Saturn’s 2010 giant storm Authors: Ricardo Hueso,Agustín Sánchez-Lavega,Enrique Garcia-Melendo,Santiago Pérez-Hoyos,J. F. Sanz-Requena,T. del Río-Gaztelurrutia,Jon Legarreta Great White Spot—a rare planet-encircling storm—raged on Saturn in 2010–2011. Analyses of high-resolution spacecraft imagery and numerical modelling reveal a dynamic storm head powered by sustained convection in the zonal flow of Saturn’s atmosphere. Springer Science and Business Media LLC	2013-06-23
Limb imaging of the Venus O₂ visible nightglow with the Venus Monitoring Camera Authors: Agustín Sánchez-Lavega,Agustín Sánchez-Lavega,A. García Muñoz,A. García Muñoz,Ricardo Hueso,Ricardo Hueso,Andrea Opitz,Wojciech J. Markiewicz,Olivier Witasse,Dmitrij V. Titov AbstractWe investigated the Venus O2 visible nightglow with imagery from the Venus Monitoring Camera on Venus Express. Drawing from data collected between April 2007 and January 2011, we study the global distribution of this emission, discovered in the late 1970s by the Venera 9 and 10 missions.… American Geophysical Union (AGU)	2013-06-13
On the Response of a Spar Floating Wind Turbine Under the Occurrence of Extreme Events Authors: Hasan Bagbanci,C. Guedes Soares,Vincenzo Nava,Vincenzo Nava,Felice Arena In this paper, the quasi-determinism theory is applied for the computation of forces jointly generated from wind and waves. A coupled 3-degree-of-freedom (3-dofs) model of a floating spar-type 5 MW wind turbine is herein studied subject to wind and waves under the occurrence of wind and sea.… American Society of Mechanical Engineers	2013-06-09
Effects of the Mooring Line Configuration on the Dynamics of a Point Absorber Authors: Nava V.,Rajic M.,Soares C. G. The aim of this paper is to study the dynamics of a floating body with characteristics comparable to a point absorber wave energy converter with different mooring systems, in geometrical configuration or in the materials. To this purpose, the dynamics of a moored buoy is investigated. The point… American Society of Mechanical Engineers	2013-06-09
A model of scattered thermal radiation for Venus from 3 to Authors: Ricardo Hueso,A. García Muñoz,A. García Muñoz,P. Wolkenberg,Agustín Sánchez-Lavega,I. Garate-Lopez Thermal radiation becomes a prominent feature in the continuum spectrum of Venus longwards of $\sim$3 $\mu$m. The emission is traceable to the upper cloud and haze layers in the planet's mesosphere. Venus' thermal radiation spectrum is punctuated by CO$_2$ bands of various strengths probing into… Elsevier BV	2013-06-01
Symmetry in evolutionary and estimation of distribution algorithms Authors: Robert I. McKay,Jose A. Lozano,Roberto Santana Symmetry has hitherto been studied piecemeal in a variety of evolutionary computation domains, with little consistency between the definitions. Here we provide formal definitions of symmetry that are consistent across the field of evolutionary computation. We propose a number of evolutionary and… IEEE	2013-06-01
The Plackett-Luce ranking model on permutation-based optimization problems Authors: Jose A. Lozano,Alexander Mendiburu,Josu Ceberio Estimation of distribution algorithms are known as powerful evolutionary algorithms that have been widely used for diverse types of problems. However, they have not been extensively developed for permutation-based problems. Recently, some progress has been made in this area by introducing… IEEE	2013-06-01
The forward problem for the electromagnetic Helmholtz equation with critical singularities Authors: Juan Antonio Barceló,Luis Vega,Miren Zubeldia We study the forward problem of the magnetic Schr��dinger operator with potentials that have a strong singularity at the origin. We obtain new resolvent estimates and give some applications on the spectral measure and on the solutions of the associated evolution problem. Elsevier BV	2013-06-01
Significance tests or confidence intervals: which are preferable for the comparison of classifiers? Authors: Daniel Berrar,Jose A. Lozano Null hypothesis significance tests and their p-values currently dominate the statistical evaluation of classifiers in machine learning. Here, we discuss fundamental problems of this research practice. We focus on the problem of comparing multiple fully specified classifiers on a small-sample test… Informa UK Limited	2013-06-01
Direct evaluation of the effect of filtering the chest compression artifacts on the uninterrupted cardiopulmonary resuscitation time Authors: Digna M. González-Otero,Elisabete Aramendi,Sofía Ruiz de Gauna,Erik Alonso,Unai Ayala,Unai Irusta,Jesus Ruiz,Trygve Eftestøl Filtering the cardiopulmonary resuscitation (CPR) artifact has been a major approach to minimizing interruptions to CPR for rhythm analysis. However, the effects of these filters on interruptions to CPR have not been evaluated. This study presents the first methodology for directly quantifying the… Elsevier BV	2013-06-01
Interference mechanism of seemingly superluminal tunneling Authors: Sokolovski, D.,Akhmatskaya, E. Apparently 'superluminal' transmission, e.g., in quantum tunnelling and its variants, occurs via a subtle interference mechanism which allows reconstruction of the entire spacial shape of a wave packet from its front tail. It is unlikely that the effect could be described adequately in simpler… American Physical Society (APS)	2013-05-08
Preface Authors: Paszyński, Maciej,Cetnarowicz, Krzysztof,Schaefer, Robert,Pardo, David,Calo, Victor Elsevier BV	2013-05-01
A multi-objective grouping Harmony Search algorithm for the optimal distribution of 24-hour medical emergency units Authors: Diana Manjarres,Itziar Landa-Torres,Sancho Salcedo-Sanz,J. Del Ser,Sergio Gil-Lopez Highlights? A multi-objective Harmony Search algorithm is presented. ? A problem of 24-h emergency centers location is solved. ? A realistic case in two regions of Spain if discussed. This paper presents a novel multi-objective heuristic approach for the efficient distribution of 24-h emergency… Elsevier BV	2013-05-01
Preventing deadlock during anisotropic 2D mesh adaptation in hp-adaptive FEM Authors: Szymczak, Arkadiusz,Paszyńska, Anna,Paszyński, Maciej,Pardo, David Abstract The paper presents a grammar for anisotropic two-dimensional mesh adaptation in hp -adaptive Finite Element Method with rectangular elements. Expressing mesh transformations as grammar productions is useful for concurrency analysis thanks to exhibiting the partial causality order (… Elsevier BV	2013-05-01