Publications

Displaying 351 - 375 of 1227

Publication	Date
Adjoint-based formulation for computing derivatives with respect to bed boundary positions in resistivity geophysics Authors: Mostafa Shahriari,Théophile Chaumont-Frelet,Théophile Chaumont-Frelet,David Pardo,David Pardo,David Pardo International audience; In inverse geophysical resistivity problems, it is common to optimize for certain re-sistivity values and bed boundary positions, as needed, for example, in geosteering applications. When using gradient-based inversion methods such as Gauss-Newton, we need to estimate the… Springer Science and Business Media LLC	2019-03-02
<p>COPD classification models and mortality prediction capacity</p> Authors: Irantzu Barrio,Inmaculada Arostegui,Inmaculada Arostegui,Amaia Aramburu,Txomin Zabala,Myriam Aburto,Cristóbal Esteban,José M. Quintana,Javier Moraza,Ane Uranga,Amaia García-Loizaga Our aim was to assess the impact of comorbidities on existing COPD prognosis scores.A total of 543 patients with COPD (FEVAmong the 543 patients enrolled, 521 (96%) were male, with a mean age of 68 years, mean body mass index 28.3 and mean FEVComorbidities should be taken into account in COPD… Informa UK Limited	2019-03-01
Source time reversal (STR) method for linear elasticity Authors: Jaime H. Ortega,Ignacio Brevis,David Pardo,David Pardo,David Pardo,Ángel Rodríguez-Rozas,Ángel Rodríguez-Rozas This work was partially supported by the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant No 644602 GEAGAM (Spain) and CONICYT, Chile - PIA/Concurso de Apoyo a Centros Científicos y Tecnológicos de Excelencia con Financiamiento Basal AFB170001.… Elsevier BV	2019-03-01
Foreword: New theoretical insights and practical applications of bio-inspired computation approaches Authors: Xin-She Yang,Javier Del Ser,Zong Woo Geem Elsevier BV	2019-03-01
Weighted strategies to guide a multi-objective evolutionary algorithm for multi-UAV mission planning Authors: Javier Del Ser,Javier Del Ser,David Camacho,Cristian Ramirez Atencia Preprint submitted and accepted in Swarm and Evolutionary Computation Elsevier BV	2019-02-01
A Discrete and Improved Bat Algorithm for solving a medical goods distribution problem with pharmacological waste collection Authors: Javier Del Ser,Javier Del Ser,Pedro Lopez-Garcia,Eneko Osaba,Xin-She Yang,Iztok Fister,Alejo J. Vazquez-Pardavila The work presented in this paper is focused on the resolution of a real-world drugs distribution problem with pharmacological waste collection. With the aim of properly meeting all the real-world restrictions that comprise this complex problem, we have modeled it as a multi-attribute or rich… Elsevier BV	2019-02-01
Dust particle size and optical depth on Mars retrieved by the MSL navigation cameras Authors: Agustín Sánchez-Lavega,Santiago Pérez-Hoyos,H. Chen-Chen In this paper we show that Sun-viewing images obtained by the Mars Science Laboratory (MSL) Navigation Cameras (Navcam) can be used for retrieving the dust optical depth and constrain the aerosol physical properties at Gale Crater by evaluating the sky brightness as a function of the scattering… Elsevier BV	2019-02-01
Trophallaxis, Low-Power Vision Sensors and Multi-objective Heuristics for 3D Scene Reconstruction Using Swarm Robotics Authors: Javier Sánchez-Cubillo,Eneko Osaba,Javier Del Ser,Miren Nekane Bilbao,Maria Carrillo A profitable strand of literature has lately capitalized on the exploitation of the collaborative capabilities of robotic swarms for efficiently undertaking diverse tasks without any human intervention, ranging from the blind exploration of devastated areas after massive disasters to mechanical… Springer International Publishing	2019-01-01
An Experimental Study in Adaptive Kernel Selection for Bayesian Optimization Authors: Ibai Roman,Roberto Santana,Alexander Mendiburu,Jose A. Lozano Bayesian Optimization has been widely used along with Gaussian Processes for solving expensive-to-evaluate black-box optimization problems. Overall, this approach has shown good results, and particularly for parameter tuning of machine learning algorithms. Nonetheless, Bayesian Optimization has to… Institute of Electrical and Electronics Engineers (IEEE)	2019-01-01
Some Lower Bounds for Solutions of Schrödinger Evolutions Authors: Agirre, Mikel,Vega, Luis We present some lower bounds for regular solutions of Schr��dinger equations with bounded and time dependent complex potentials. Assuming that the solution has some positive mass at time zero within a ball of certain radius, we prove that this mass can be observed if one looks at the solution and… Society for Industrial & Applied Mathematics (SIAM)	2019-01-01
Automatic Cardiac Rhythm Classification With Concurrent Manual Chest Compressions Authors: Iraia Isasi,Unai Irusta,Ali Bahrami Rad,Elisabete Aramendi,Morteza Zabihi,Trygve Eftestol,Jo Kramer-Johansen,Lars Wik Peer reviewed Institute of Electrical and Electronics Engineers (IEEE)	2019-01-01
A Note on the Behavior of Majority Voting in Multi-Class Domains with Biased Annotators Authors: Jeronimo Hernandez-Gonzalez,Inaki Inza,Jose A. Lozano TIN2016-78365-R Institute of Electrical and Electronics Engineers (IEEE)	2019-01-01
Detection of sand dunes on Mars using a regular vine-based classification approach Authors: Carrera, D.,Bandeira, L.,Santana, R.,Lozano, J.A. This paper deals with the problem of detecting sand dunes from remotely sensed images of the surface of Mars. We build on previous approaches that propose methods to extract informative features for the classification of the images. The intricate correlation structure exhibited by these features… Elsevier BV	2019-01-01
A Multistage Algorithm for ECG Rhythm Analysis During Piston-Driven Mechanical Chest Compressions Authors: Iraia Isasi,Unai Irusta,Elisabete Aramendi,Unai Ayala,Erik Alonso,Jo Kramer-Johansen,Trygve Eftestol An accurate rhythm analysis during cardiopulmonary resuscitation (CPR) would contribute to increase the survival from out-of-hospital cardiac arrest. Piston-driven mechanical compression devices are frequently used to deliver CPR. The objective of this paper was to design a method to accurately… Institute of Electrical and Electronics Engineers (IEEE)	2019-01-01
Using Adaptive Novelty Search in Differential Evolution Authors: Akemi Gálvez,Akemi Gálvez,Javier Del Ser,Javier Del Ser,Andrés Iglesias,Andrés Iglesias,Iztok Fister,Iztok Fister,Eneko Osaba Novelty search ensures evaluation of solutions in stochastic population-based nature-inspired algorithms according to additional measure, where each solution is evaluated by a distance to its neighborhood beside the fitness function. Thus, the population diversity is preserved that is a… Springer International Publishing	2019-01-01
Exploring Li-ion conductivity in cubic, tetragonal and mixed-phase Al-substituted Li7La3Zr2O12 using atomistic simulations and effective medium theory Authors: Elena Akhmatskaya,Elena Akhmatskaya,Mauricio R. Bonilla,Javier Carrasco,Fabián A. García Daza MINECO ENE2016-81020-R. SGI/IZO-SGIker UPV/EHU. the i2BASQUE academic network. Barcelona Supercomputer Center (QCM-2016-450 3-0002). Elsevier BV	2019-01-01
Bat Algorithm for Kernel Computation in Fractal Image Reconstruction Authors: Eneko Osaba,Javier Del Ser,Andrés Iglesias,Akemi Gálvez Computer reconstruction of digital images is an important problem in many areas such as image processing, computer vision, medical imaging, sensor systems, robotics, and many others. A very popular approach in that regard is the use of different kernels for various morphological image processing… Springer International Publishing	2019-01-01
Unsupervised Neural Machine Translation, a new paradigm solely based on monolingual text Authors: Artetxe, Mikel,Labaka Intxauspe, Gorka,Agirre Bengoa, Eneko UnsupNMT is a project funded by the Spanish Ministry of Economy, Industry and Competitiveness (TIN2017-91692-EXP). Sociedad Española para el Procesamiento del Lenguaje Natural	2019-01-01
LIHLITH: Learning to Interact with Humans by Lifelong Interaction with Humans Authors: Agirre Bengoa, Eneko,Otegi, Arantxa,Pradel, Camille,Rosset, Sophie,Peñas Padilla, Anselmo,Cieliebak, Mark The LIHLITH project will research, innovate and validate a new lifelong learning framework for the interaction of humans and machines on specific domains with the aim of improving the quality of existing dialogue systems and lowering the cost of deployment in new domains. LILITH will develop… Sociedad Española para el Procesamiento del Lenguaje Natural	2019-01-01
Dynamic Partitioning of Evolving Graph Streams Using Nature-Inspired Heuristics Authors: Akemi Gálvez,Akemi Gálvez,Javier Del Ser,Andrés Iglesias,Andrés Iglesias,Eneko Osaba,Iztok Fister,Miren Nekane Bilbao Detecting communities of interconnected nodes is a frequently addressed problem in situation that be modeled as a graph. A common practical example is this arising from Social Networks. Anyway, detecting an optimal partition in a network is an extremely complex and highly time-consuming task. This… Springer International Publishing	2019-01-01
Cuckoo Search Algorithm for Border Reconstruction of Medical Images with Rational Curves Authors: Akemi Gálvez,Iztok FisterJr.,Eneko Osaba,Javier Del Ser,Andrés Iglesias,Iztok Fister Border reconstruction is a key technology in medical image processing, where it is applied to identify and separate different tissues, organs, and tumors in diagnostic procedures. The classical approaches for this problem are based on either linear or polynomial functions to describe the border of… Springer International Publishing	2019-01-01
Optimal Microgrid Topology Design and Siting of Distributed Generation Sources Using a Multi-Objective Substrate Layer Coral Reefs Optimization Algorithm Authors: Silvia Jiménez-Fernández,Carlos Camacho-Gómez,Ricardo Mallol-Poyato,Juan Fernández,Javier Del Ser,Antonio Portilla-Figueras,Sancho Salcedo-Sanz In this work, a problem of optimal placement of renewable generation and topology design for a Microgrid (MG) is tackled. The problem consists of determining the MG nodes where renewable energy generators must be optimally located and also the optimization of the MG topology design, i.e., deciding… MDPI AG	2018-12-30
A Hidden Markov Model Approach for Ventricular Fibrillation Detection Authors: Unai Irusta,Borja Altamira,Elisabete Aramendi,Mohamud Daya,Erik Alonso Early detection and defibrillation of ventricular fibrillation (VF) has been associated with improved survival of out-of-hospital cardiac arrest (OHCA) patients treated with automated external defibrillators (AEDs). This study proposes a method for VF detection using ECGs obtained from OHCA… Computing in Cardiology	2018-12-30
Finger Photoplethysmography to Monitor Chest Compression Rate During Out-of-Hospital Cardiac Arrest Authors: Jon Urteaga,Elisabete Aramendi,Ahamed H. Idris,Unai Irusta,Mohamud Daya,Andoni Elola,Pamela Owens,Erik Alonso Cardiac arrest survival rate is strongly associated with high quality cardiopulmonary resuscitation (CPR), which includes chest compression (CC) rates above 100 min−1. Currently, defibrillator monitors use external hardware such as CPR assist pads to monitor CC rate and give feedback to the rescuer… Computing in Cardiology	2018-12-30
An Accurate Shock/No-Shock Decision Algorithm for Use During Piston-Driven Chest Compressions Authors: Iraia Isasi,Jo Kramer-Johansen,Elisabete Aramendi,Unai Ayala,Erik Alonso,Trygve Eftestøl,Unai Irusta Mechanically delivered chest compressions induce artifacts in the ECG that can lead to an incorrect diagnosis of the shock advice algorithms implemented in the defibrillators. This forces the rescuer to stop cardiopulmonary resuscitation (CPR) compromising circulation and thus reducing the… Computing in Cardiology	2018-12-30