Publications

Displaying 601 - 625 of 1227

Publication	Date
A novel machine learning approach to the detection of identity theft in social networks based on emulated attack instances and support vector machines Authors: Esther Villar-Rodriguez,Miren Nekane Bilbao,Sancho Salcedo-Sanz,Ana I. Torre-Bastida,J. Del Ser SummaryThe proliferation of social networks and their usage by a wide spectrum of user profiles has been specially notable in the last decade. A social network is frequently conceived as a strongly interlinked community of users, each featuring a compact neighborhood tightly and actively connected… Wiley	2015-09-20
A new approach to categorising continuous variables in prediction models: Proposal and validation Authors: Irantzu Barrio,Inmaculada Arostegui,Inmaculada Arostegui,María Xosé Rodríguez-Álvarez,José-María Quintana When developing prediction models for application in clinical practice, health practitioners usually categorise clinical variables that are continuous in nature. Although categorisation is not regarded as advisable from a statistical point of view, due to loss of information and power, it is a… SAGE Publications	2015-09-18
Is it possible to improve the prediction ability of the BODE index? Authors: Irantzu Barrio,Cristóbal Esteban,Alberto Capelastegui,Inmaculada Arostegui,Txomin Zabala,Francisco Javier Moraza,Myriam Aburto,Helena Azcuna,Amaia Aramburu Between January 2003-2004 543 patients with COPD (FEV1 Results: Out of the 543 patients, 96% were male (average age of 68 years, BMI 28.3, 2.4±1.4 in Charlson and FEV1 of 55.0±13.1%). Regarding dyspnea, 48.6% reported dyspnea grade 2(MRC). The average distance covered in the 6MWT was 408.9±92.… European Respiratory Society (ERS)	2015-09-01
A method to measure ventilation rate during cardiopulmonary resuscitation using the capnogram Authors: Elisabete Aramendi,Erik Alonso,James K. Russell,Beatriz Chicote,Mohamud Daya,Unai Irusta,Andoni Elola The survival rate in cardiac arrest is associated to the quality of the chest compressions (CCs) and ventilations provided during cardiopulmonary resuscitation (CPR). Hyperventilation remains common whenever ventilation is manual during resuscitation from cardiac arrest. The capnogram is used to… IEEE	2015-09-01
An agent-oriented hierarchic strategy for solving inverse problems Authors: Smolka, M.,Schaefer, R.,Paszynski, M.,Pardo, D.,Alvarez-Aramberri, J. Abstract The paper discusses the complex, agent-oriented hierarchic memetic strategy (HMS) dedicated to solving inverse parametric problems. The strategy goes beyond the idea of two-phase global optimization algorithms. The global search performed by a tree of dependent demes is… University of Zielona Góra, Poland	2015-09-01
On the heritability of dandelion-encoded harmony search heuristics for tree optimization problems Authors: Armando Ferro,Javier Del Ser,Miren Nekane Bilbao,Cristina Perfecto Tree optimization by Dandelion-coded HS heuristics Tree based optimization problems stand for those paradigms where solutions can be arranged within a tree-like graph whose nodes represent the optimization variables of the problem at hand and their interconnecting edges topological and/or… IEEE	2015-09-01
Sample entropy as a shock outcome predictor during basis life support Authors: Beatriz Chicote,Carlos Corcuera,Elisabete Aramendi,Daniel Alonso,Unai Irusta,Carlos Jover Optimizing defibrillation times may improve survival from ventricular fibrillation (VF) cardiac arrest. VF waveform analysis is one of the best non-invasive decision tools for shock outcome prediction. This study introduces a VF-waveform feature based on the computation of the sample entropy (… IEEE	2015-09-01
Comprehensive characterization of the behaviors of estimation of distribution algorithms Authors: Carlos Echegoyen,Roberto Santana,Alexander Mendiburu,Jose A. Lozano Estimation of distribution algorithms (EDAs) are a successful example of how to use machine learning techniques for designing robust and efficient heuristic search algorithms. Understanding the relationship between EDAs and the space of optimization problems is a fundamental issue for the… Elsevier BV	2015-09-01
A Critical Review of Robustness in Power Grids Using Complex Networks Concepts Authors: Lucas Cuadra,Sancho Salcedo-Sanz,Javier Del Ser,Silvia Jiménez-Fernández,Zong Geem This paper reviews the most relevant works that have investigated robustness in power grids using Complex Networks (CN) concepts. In this broad field there are two different approaches. The first one is based solely on topological concepts, and uses metrics such as mean path length, clustering… MDPI AG	2015-08-28
Assessment of the Performance of Imputation Techniques in Observational Studies with Two Measurements Authors: Urko Aguirre,Jose MarÃa Quintana,Inmaculada Arostegui,CristÃ³bal Esteban In observational studies with two measurements when the measured outcome pertains to a health related quality of life (HRQoL) variable, one motivation of the research may be to determine the potential predictors of the mean change of the outcome of interest. It is very common in such studies for… Lifescience Global	2015-08-19
A Harmony Search Approach for the Selective Pick-Up and Delivery Problem with Delayed Drop-Off Authors: Sancho Salcedo-Sanz,Javier Del Ser,Cristina Perfecto,Miren Nekane Bilbao In the last years freight transportation has undergone a sharp increase in the scales of its underlying processes and protocols mainly due to the ever-growing community of users and the increasing number of on-line shopping stores. Furthermore, when dealing with the last stage of the shipping chain… Springer Berlin Heidelberg	2015-08-09
Dandelion-Encoded Harmony Search Heuristics for Opportunistic Traffic Offloading in Synthetically Modeled Mobile Networks Authors: Sancho Salcedo-Sanz,Miren Nekane Bilbao,Javier Del Ser,Armando Ferro,Cristina Perfecto The high data volumes being managed by and transferred through mobile networks in the last few years are the main rationale for the upsurge of research aimed at finding efficient technical means to offload exceeding traffic to alternative communication infrastructures with higher transmission… Springer Berlin Heidelberg	2015-08-09
Non-Markovian models of the growth of a polymer chain Authors: Elena Akhmatskaya,Elena Akhmatskaya,Simone Rusconi,José M. Asua,Dmitri Sokolovski,Dmitri Sokolovski Using simple exactly solvable models, we show that event-dependent time delays may lead to significant non-Poisson effects in the statistics of polymer chain growth. The results are confirmed by stochastic simulation of various growth scenarios. Our interest in mathematical aspects of non-Markovian… The Royal Society	2015-08-01
Effect of various dietary regimens on oral challenge with Mycobacterium avium subsp. paratuberculosis in a rabbit model Authors: Maider Mateo-Abad,Joseba M. Garrido,Rakel Arrazuria,Ramón A. Juste,Inmaculada Arostegui,Inmaculada Arostegui,Elena Molina,Natalia Elguezabal Rabbits are susceptible to infection by Mycobacterium avium subspecies paratuberculosis (MAP) in both wildlife and experimental conditions. Under the hypotheses that nutrient balance might influence the establishment of infection, we designed an experiment where MAP intestinal colonization was… Elsevier BV	2015-08-01
Six years of Venus winds at the upper cloud level from UV, visible and near infrared observations from VIRTIS on Venus Express Authors: Agustín Sánchez-Lavega,I. Garate-Lopez,Javier Peralta,T. V. Bandos,Ricardo Hueso 38 pages, 16 figures 2 tables, 1 appendix Elsevier BV	2015-08-01
Semi-analytical response of acoustic logging measurements in frequency domain Authors: Muga, I.,Pardo, D.,Matuszyk, P.J.,Torres-Verdin, C. This work proposes a semi-analytical method for simulation of the acoustic response of multipole eccentered sources in a fluid-filled borehole. Assuming a geometry that is invariant with respect to the azimuthal and vertical directions, the solution in frequency domain is expressed in terms of a… Elsevier BV	2015-08-01
Direct solvers performance on h-adapted grids Authors: Paszynski, M.,Pardo, D.,Calo, V.M. We analyse the performance of direct solvers when applied to a system of linear equations arising from an $h$-adapted, $C^0$ finite element space. Theoretical estimates are derived for typical $h$-refinement patterns arising as a result of a point, edge, or face singularity as well as boundary… Elsevier BV	2015-08-01
Kernels of Mallows Models for Solving Permutation-based Problems Authors: Josu Ceberio,Alexander Mendiburu,Jose A. Lozano Recently, distance-based exponential probability models, such as Mallows and Generalized Mallows, have demonstrated their validity in the context of estimation of distribution algorithms (EDAs) for solving permutation problems. However, despite their successful performance, these models are… ACM	2015-07-11
High-accuracy adaptive modeling of the energy distribution of a meniscus-shaped cell culture in a Petri dish Authors: Ignacio Gomez-Revuelto,David Pardo,David Pardo,David Pardo,Luis E. Garcia-Castillo Cylindrical Petri dishes embedded in a rectangular waveguide and exposed to a polarized electromagnetic wave are often used to grow cell cultures. To guarantee the success of these cultures, it is necessary to enforce that the specific absorption rate distribution is sufficiently high and uniform… Elsevier BV	2015-07-01
One-year-ahead energy demand estimation from macroeconomic variables using computational intelligence algorithms Authors: Jose A. Portilla-Figueras,Jesús Muñoz-Bulnes,Sancho Salcedo-Sanz,J. Del Ser This paper elaborates on a problem of one-year ahead estimation of energy demand based on macroeconomic variables. To this end, two different Computational Intelligence approaches are herein evaluated: (1) a modified Harmony Search (HS) optimization algorithm with an exponential prediction model… Elsevier BV	2015-07-01
Dealing with the evaluation of supervised classification algorithms Authors: Jose A. Lozano,Iñaki Inza,Guzmán Santafé Performance assessment of a learning method related to its prediction ability on independent data is extremely important in supervised classification. This process provides the information to evaluate the quality of a classification model and to choose the most appropriate technique to solve the… Springer Science and Business Media LLC	2015-06-30
Mechanisms of Toxicity of Ag Nanoparticles in Comparison to Bulk and Ionic Ag on Mussel Hemocytes and Gill Cells Authors: Katsumiti Kodo Filho, Alberto,Gilliland, Douglas,Arostegui Madariaga, Inmaculada,Cajaraville Bereciartua, Miren Pilare Silver nanoparticles (Ag NPs) are increasingly used in many products and are expected to end up in the aquatic environment. Mussels have been proposed as marine model species to evaluate NP toxicity in vitro. The objective of this work was to assess the mechanisms of toxicity of Ag NPs on mussel… Public Library of Science (PLoS)	2015-06-10
Multi-view classification of psychiatric conditions based on saccades Authors: Roberto Santana,Alexander Mendiburu,Jose A. Lozano Graphical abstractDisplay Omitted HighlightsUsing saccadic information to classify different psychiatric conditions.Classifiers could be used to reduce the possible diagnoses for a given patient.Simple descriptors are extracted from the saccades.Fictitious saccades help to improve the… Elsevier BV	2015-06-01
Cytotoxicity of Au, ZnO and SiO₂ NPs using in vitro assays with mussel hemocytes and gill cells: Relevance of size, shape and additives. Authors: Alberto, Katsumiti,Inmaculada, Arostegui,Miriam, Oron,Douglas, Gilliland,Eugenia, Valsami-Jones,Miren P, Cajaraville Metal-bearing nanoparticles (NPs) possess unique physico-chemical characteristics that make them useful for an increasing number of industrial products and applications, but could also confer them a higher toxicity due to their higher reactivity compared to bulk forms of the same materials. There… Journal: Nanotoxicology	2015-05-13
Cytotoxicity of Au, ZnO and SiO₂NPs usingin vitroassays with mussel hemocytes and gill cells: Relevance of size, shape and additives Authors: Inmaculada Arostegui,Douglas Gilliland,Miriam Oron,Miren P. Cajaraville,Eugenia Valsami-Jones,Alberto Katsumiti AbstractMetal-bearing nanoparticles (NPs) possess unique physico-chemical characteristics that make them useful for an increasing number of industrial products and applications, but could also confer them a higher toxicity due to their higher reactivity compared to bulk forms of the same materials… Informa UK Limited	2015-05-12