Publications

Displaying 401 - 425 of 1351

Publication	Date
On-line Elastic Similarity Measures for time series Authors: Aritz Pérez,Javier Del Ser,Javier Del Ser,Jose A. Lozano,Jose A. Lozano,Izaskun Oregi The way similarity is measured among time series is of paramount importance in many data mining and machine learning tasks. For instance, Elastic Similarity Measures are widely used to determine whether two time series are similar to each other. Indeed, in off-line time series mining, these… Elsevier BV	2019-04-01
Novelty search for global optimization Authors: Akemi Gálvez,Javier Del Ser,Javier Del Ser,Andrés Iglesias,Iztok Fister,Iztok Fister,Matjaž Perc,Mitja Slavinec,Eneko Osaba Novelty search is a tool in evolutionary and swarm robotics for maintaining the diversity of population needed for continuous robotic operation. It enables nature-inspired algorithms to evaluate solutions on the basis of the distance to their k-nearest neighbors in the search space. Besides this,… Elsevier BV	2019-04-01
Explicit-in-time goal-oriented adaptivity Authors: Elisabete Alberdi,Victor M. Calo,Victor M. Calo,Judit Muñoz-Matute,David Pardo,David Pardo,David Pardo,Kristoffer G. van der Zee The first four authors have received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska- Curie grant agreement No 777778. David Pardo, Elisabete Alberdi and Judit Muñoz-Matute were partially funded by the Basque Government Consolidated… Elsevier BV	2019-04-01
Forward‐in‐time goal‐oriented adaptivity Authors: Elisabete Alberdi,Judit Muñoz-Matute,Victor M. Calo,Victor M. Calo,David Pardo,David Pardo,David Pardo SummaryIn goal‐oriented adaptive algorithms for partial differential equations, we adapt the finite element mesh to reduce the error of the solution in some quantity of interest. In time‐dependent problems, this adaptive algorithm involves solving a dual problem that runs backward in time. This… Wiley	2019-04-01
Human dependence on natural resources in rapidly urbanising South African regions Authors: Patrick J. O’Farrell,Patrick J. O’Farrell,Stefano Balbi,Nadia Sitas,Nadia Sitas,Ilse Kotzee,Ferdinando Villa,Odirilwe Selomane,Odirilwe Selomane,Ryan Blanchard,Ryan Blanchard Enhancing the governance of social-ecological systems for more equitable and sustainable development is hindered by inadequate knowledge about how different social groups and communities rely on natural resources. We used openly accessible national survey data to develop a metric of overall… IOP Publishing	2019-03-29
Deep Neural Networks for ECG-Based Pulse Detection during Out-of-Hospital Cardiac Arrest Authors: Andoni Elola,Elisabete Aramendi,Unai Irusta,Artzai Picón,Erik Alonso,Pamela Owens,Ahamed Idris The automatic detection of pulse during out-of-hospital cardiac arrest (OHCA) is necessary for the early recognition of the arrest and the detection of return of spontaneous circulation (end of the arrest). The only signal available in every single defibrillator and valid for the detection of pulse… MDPI AG	2019-03-21
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 In inverse geophysical resistivity problems, it is common to optimize for specific resistivity 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 derivatives of 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 (FEV1 <80% and FEV1/FVC <70%) were included between January 2003 and January 2004. Patients were stable for at least 6 weeks before inclusion and were followed for 5 years… 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 Management and mission planning over a swarm of unmanned aerial vehicle (UAV) remains to date as a challenging research trend in what regards to this particular type of aircrafts. These vehicles are controlled by a number of ground control station (GCS), from which they are commanded to… 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 Abstract 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… 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
Combining eight research areas to foster the uptake of ecosystem‐based management in fresh waters Authors: Sami Domisch,Simone D. Langhans,Simone D. Langhans,Sonja C. Jähnig,Romina Martin,Gonzalo Delacámara,Javier Martínez-López,Stefano Balbi,Peter Vermeiren,Virgilio Hermoso,Mathias Kuemmerlen,Ferdinando Villa AbstractFreshwater ecosystems are under a constant risk of being irreversibly damaged by human pressures that threaten their biodiversity, the sustainability of ecosystem services (ESs), and human well‐being. Despite the implementation of various environmental regulations, the challenges of… Wiley	2019-01-23
Bat Algorithm for Kernel Computation in Fractal Image Reconstruction Authors: Gálvez, Akemi,Osaba, Eneko,Del Ser, Javier,Iglesias, Andrés 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: Gálvez, Akemi,Fister, Iztok,Fister, Iztok,Osaba, Eneko,Ser, Javier Del,Iglesias, Andrés 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
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
Hydrodynamic identification of NAUTILUS FOWT platform from small scale tests Authors: Nava V.,Galvan J.,Sanchez-Lara M.,Garrido-Mendoza C.,Perez-Moran G.,Boulluec M. L.,Augier B.,Rodriguez-Arias R. A small-scale tank test campaign of the NAUTILUS offshore wind floating semisub-mersible platform was held at the Ifremer Deep Water Basin within the framework of the MaRINET 2 project. The support structure consists in four stabilized columns on a square pontoon supporting a generic 8-MW wind… CRC Press/Balkema	2019-01-01
Automatic Cardiac Rhythm Classification With Concurrent Manual Chest Compressions Authors: Isasi, Iraia,Irusta, Unai,Rad, Ali Bahrami,Aramendi, Elisabete,Zabihi, Morteza,Eftestol, Trygve,Kramer-Johansen, Jo,Wik,Lars Electrocardiogram (EKG) based classification of out-of-hospital cardiac arrest (OHCA) rhythms is important to guide treatment and to retrospectively elucidate the effects of therapy on patient response. OHCA rhythms are grouped into five categories: ventricular fibrillation (VF) and tachycardia (VT… 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
Exploring Li-Ion Conductivity in Cubic, Tetragonal and Mixed-Phase Al-Substituted Li <sub>7</sub>La <sub>3</sub>Zr2O <sub>12</sub> Using Atomistic Simulations and Effective Medium Theory Authors: Fabián A. García Daza,Elena Akhmatskaya,Elena Akhmatskaya,Javier Carrasco,Mauricio R. Bonilla 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