Publications

Displaying 451 - 475 of 1227

Publication	Date
Automatic Fitting of Feature Points for Border Detection of Skin Lesions in Medical Images with Bat Algorithm Authors: Eneko Osaba,Javier Del Ser,Javier Del Ser,Andrés Iglesias,Andrés Iglesias,Akemi Gálvez,Akemi Gálvez,Iztok Fister This paper addresses the problem of automatic fitting of feature points for border detection of skin lesions. This problem is an important task in segmentation of dermoscopy images for semi-automatic early diagnosis of melanoma and other skin lesions. Given a set of feature points selected by a… Springer International Publishing	2018-01-01
Task Classification Using Topological Graph Features for Functional M/EEG Brain Connectomics Authors: Miren Nekane Bilbao,Eneko Osaba,Javier Del Ser,Javier Del Ser In the last few years the research community has striven to achieve a thorough understanding of the brain activity when the subject under analysis undertakes both mechanical tasks and purely mental exercises. One of the most avant-garde approaches in this regard is the discovery of connectivity… Springer International Publishing	2018-01-01
Environmental Perception for Intelligent Vehicles Authors: Javier Fernandez,Felipe Jiménez,Javier Del Ser,Jorge Alfonso,Mario Mata,Antonio M. López,José Manuel Menéndez,David Martin,Sergio Campos-Cordobés,Arturo de la Escalera,Javier Sánchez-Cubillo,Gabriel Villalonga,Fernando García,José María Armingol,David… Sin financiación No data (2018) UEM Elsevier BV	2018-01-01
Concept Tracking and Adaptation for Drifting Data Streams under Extreme Verification Latency Authors: Jesus L. Lobo,Miren Nekane Bilbao,Ana I. Torre-Bastida,Javier Del Ser,Maria Arostegi When analyzing large-scale streaming data towards resolving classification problems, it is often assumed that true labels of the incoming data are available right after being predicted. This assumption allows online learning models to efficiently detect and accommodate non-stationarities in the… Springer International Publishing	2018-01-01
Limb clouds and dust on Mars from images obtained by the Visual Monitoring Camera (VMC) onboard Mars Express Authors: Ricardo Hueso,Agustín Sánchez-Lavega,Alejandro Cardesín-Moinelo,A. Garro,S. Wood,H. Chen-Chen,T. del Río-Gaztelurrutia,I. Ordonez-Etxeberria,Dmitri Titov Abstract The Visual Monitoring Camera (VMC) onboard the Mars Express (MEx) spacecraft is a simple camera aimed to monitor the release of the Beagle-2 lander on Mars Express and later used for public outreach. Here, we employ VMC as a scientific instrument to study and characterize high altitude… Elsevier BV	2018-01-01
A Study of the Predictive Earliness of Traffic Flow Characterization for Software Defined Networking Authors: Javier Del Ser,Hegoi Garitaonandia,Juanjo Unzilla,Eduardo Jacob Software Defined Networking (SDN) is a new network paradigm that decouples the control from the data plane in order to provide a more structured approach to develop applications and services. In traditional networks the routing of flows is defined by masks and tends to be rather static. With SDN,… Springer International Publishing	2018-01-01
The risk of sub-optimal use of Open Source NLP Software: UKB is inadvertently state-of-the-art in knowledge-based WSD Authors: Oier Lopez de Lacalle,Aitor Soroa,Eneko Agirre UKB is an open source collection of programs for performing, among other tasks, knowledge-based Word Sense Disambiguation (WSD). Since it was released in 2009 it has been often used out-of-the-box in sub-optimal settings. We show that nine years later it is the state-of-the-art on knowledge-based… Association for Computational Linguistics (ACL)	2018-01-01
The Relationship Between Graphical Representations of Regular Vine Copulas and Polytrees Authors: Diana Carrera,Jose A. Lozano,Jose A. Lozano,Roberto Santana Graphical models (GMs) are powerful statistical tools for modeling the (in)dependencies among random variables. In this paper, we focus on two different types of graphical models: R-vines and polytrees. Regarding the graphical representation of these models, the former uses a sequence of undirected… Springer International Publishing	2018-01-01
Drift Detection over Non-stationary Data Streams Using Evolving Spiking Neural Networks Authors: Jesus L. Lobo,Ibai Laña,Miren Nekane Bilbao,Nikola Kasabov,Javier Del Ser,Javier Del Ser Drift detection in changing environments is a key factor for those active adaptive methods which require trigger mechanisms for drift adaptation. Most approaches are relied on a base learner that provides accuracies or error rates to be analyzed by an algorithm. In this work we propose the use of… Springer International Publishing	2018-01-01
Road Traffic Forecasting Using NeuCube and Dynamic Evolving Spiking Neural Networks Authors: Ibai Laña,Jesus L. Lobo,Nikola Kasabov,Javier Del Ser,Elisa Capecci This paper presents a new approach for spatio-temporal road traffic forecasting that relies on the adoption of the NeuCube architecture based on spiking neural networks. The NeuCube platform was originally conceived and designed to process electroencephalographic (EEG) signals considering their… Springer International Publishing	2018-01-01
A systematic search of sudden pressure drops on Gale crater during two Martian years derived from MSL/REMS data Authors: I. Ordonez-Etxeberria,Agustín Sánchez-Lavega,Ricardo Hueso The Mars Science Laboratory (MSL) rover carries a suite of meteorological detectors that constitute the Rover Environmental Monitoring Station (REMS) instrument. REMS investigates the meteorological conditions at Gale crater by obtaining high-frequency data of pressure, air and ground temperature,… Elsevier BV	2018-01-01
Big Data in Road Transport and Mobility Research Authors: Campos Cordobés, Sergio,Del Ser, Javier,Laña, Ibai,Olabarrieta, Ignacio (Iñaki),Sánchez Cubillo, Javier,Sánchez-Medina, Javier J.,Torre-Bastida, Ana I. Abstract Ubiquitous computing has changed the acquisition of mobility data, with two aspects contributing: the high penetration rate and the ability to capture and share information on a continuous basis. This applies to geolocation information, operational mobile phone data, and also, social… Elsevier BV	2018-01-01
Comparative study of pheromone control heuristics in ACO algorithms for solving RCPSP problems Authors: Antonio Gonzalez-Pardo,Javier Del Ser,Javier Del Ser,David Camacho Abstract Constraint Satisfaction Problems (CSP) belong to a kind of traditional NP-hard problems with a high impact on both research and industrial domains. The goal of these problems is to find a feasible assignment for a group of variables where a set of imposed restrictions is satisfied. This… Elsevier BV	2017-11-01
Temporal and spatial variations of the absolute reflectivity of Jupiter and Saturn from 0.38 to 1.7μm with PlanetCam-UPV/EHU Authors: Jose Félix Rojas,Agustín Sánchez-Lavega,Ricardo Hueso,Santiago Pérez-Hoyos,Javier López-Santiago,I. Mendikoa We provide measurements of the absolute reflectivity of Jupiter and Saturn along their central meridians in filters covering a wide range of visible and near-infrared wavelengths (from 0.38 to 1.7 $��$m) that are not often presented in the literature. We also give measurements of the geometric… EDP Sciences	2017-11-01
On Efficiently Solving the Vehicle Routing Problem with Time Windows Using the Bat Algorithm with Random Reinsertion Operators Authors: Javier Del Ser,Javier Del Ser,Pedro Lopez-Garcia,Eneko Osaba,Xin-She Yang,Roberto Carballedo,Iztok Fister An evolutionary and discrete variant of the Bat Algorithm (EDBA) is proposed for solving the Vehicle Routing Problem with Time Windows, or VRPTW. The EDBA developed not only presents an improved movement strategy, but it also combines with diverse heuristic operators to deal with this type of… Springer International Publishing	2017-10-10
Wind Power Production Forecasting Using Ant Colony Optimization and Extreme Learning Machines Authors: Cristina Perfecto,Miren Nekane Bilbao,Maria Carrillo,Javier Del Ser,Javier Del Ser,David Camacho Nowadays the energy generation strategy of almost every nation around the world relies on a strong contribution from renewable energy sources. In certain countries the relevance taken by wind energy is particularly high within its national production share, mainly due to its large-scale wind flow… Springer International Publishing	2017-10-05
The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation Authors: S. Kalkan,Santiago Pérez-Hoyos,Yavuz Güney,B. Gaehrken,Toni Santana-Ros,Victor Ali-Lagoa,Martina Maestripieri,Kosmas Gazeas,J. C. Guirado,Nicolás Morales,E. Meza,W. Beisker,Alvaro Alvarez-Candal,Ricardo Hueso,Afşar Kabaş,J. Lecacheux,Theodor Pribulla,A.… Among the four known transneptunian dwarf planets, Haumea is an exotic, very elongated, and fast rotating body. In contrast to the other dwarf planets, its size, shape, albedo, and density are not well constrained. Here we report results of a multi-chord stellar occultation, observed on 2017… Springer Science and Business Media LLC	2017-10-01
Measuring the class-imbalance extent of multi-class problems Authors: Iñaki Inza,Jose A. Lozano,Jose A. Lozano,Jonathan Ortigosa-Hernández TIN2013-41272P, IT609-13, AP2008-00766 Elsevier BV	2017-10-01
Time-domain goal-oriented adaptivity using pseudo-dual error representations Authors: Victor M. Calo,Victor M. Calo,Judit Muñoz-Matute,Elisabete Alberdi,David Pardo,David Pardo,David Pardo Goal-oriented adaptive algorithms produce optimal grids to solve challenging engineering problems. Recently, a novel error representation using (unconventional) pseudo-dual problems for goal-oriented adaptivity in the context of frequency-domain wave-propagation problems has been developed. In this… Elsevier BV	2017-10-01
Detection of non-technical losses in smart meter data based on load curve profiling and time series analysis Authors: Esther Villar-Rodriguez,Javier Del Ser,Javier Del Ser,Sergio Gil-Lopez,Izaskun Oregi,Miren Nekane Bilbao The advent and progressive deployment of the so-called Smart Grid has unleashed a profitable portfolio of new possibilities for an efficient management of the low-voltage distribution network supported by the introduction of information and communication technologies to exploit its digitalization.… Elsevier BV	2017-10-01
Neptune long-lived atmospheric features in 2013–2015 from small (28-cm) to large (10-m) telescopes Authors: L.A. Sromovsky,J. Guarro,J. Sussenbach,Nicholas M. Law,Ricardo Hueso,Agustín Sánchez-Lavega,Christoph Baranec,K. de Kleer,S. Luszcz-Cook,D. Gavel,A. Wesley,Jose Félix Rojas,P. Gorczynski,E. Victor Garcia,S.M. Ammons,Michael H. Wong,Heidi Hammel,I.… Since 2013, observations of Neptune with small telescopes have resulted in several detections of long-lived bright atmospheric features that have also been observed by large telescopes such as Keck II or Hubble. The combination of both types of images allows the study of the long term evolution of… Elsevier BV	2017-10-01
Removing Piston-driven Mechanical Chest Compression Artefacts from the ECG Authors: Unai Irusta,Iraia Isasi,Erik Alonso,Jo Kramer-Johansen,Unai Ayala,Elisabete Aramendi,Trygve Eftestøl Piston-driven mechanical chest compression (CC) devices induce a quasi-periodic artefact in the ECG, making rhythm diagnosis unreliable. Data from 230 out-of-hospital cardiac arrest (OHCA) patients were collected in which CCs were delivered using the piston driven LUCAS-2 device. Underlying rhythms… Computing in Cardiology	2017-09-14
Goal‐oriented adaptivity using unconventional error representations for the multidimensional Helmholtz equation Authors: Ignacio Muga,Serge Prudhomme,David Pardo,David Pardo,David Pardo,Vincent Darrigrand,Vincent Darrigrand,Albert Romkes,Ángel Rodríguez-Rozas,Ángel Rodríguez-Rozas SummaryIn goal‐oriented adaptivity, the error in the quantity of interest is represented using the error functions of the direct and adjoint problems. This error representation is subsequently bounded above by element‐wise error indicators that are used to drive optimal refinements. In this work,… Wiley	2017-09-07
Millimeter-Wave V2V Communications: Distributed Association and Beam Alignment Authors: Cristina Perfecto,Javier Del Ser,Mehdi Bennis Accepted May 24, 2017 by IEEE Journal on Selected Areas of Communication (JSAC) SI on Millimeter Wave Communications for Future Mobile Networks. 14 pages. 6 Figures, 3 Tables Institute of Electrical and Electronics Engineers (IEEE)	2017-09-01
A numerical study on the hydrodynamic impact of device slenderness and array size in wave energy farms in realistic wave climates Authors: Penalba, M.,Touzon, I.,Lopez-Mendia, J.,Nava, V. The future of wave energy converters lies in the design and realization of farms comprising of several devices, given the level of actual power flow for the individual devices and because of several operational issues. Therefore, not only the hydrodynamics of individual and isolated devices should… Elsevier BV	2017-09-01