Publications

Displaying 476 - 500 of 1307

Publication	Date
Differential Evolution for Association Rule Mining Using Categorical and Numerical Attributes Authors: Javier Del Ser,Javier Del Ser,Andrés Iglesias,Andrés Iglesias,Eneko Osaba,Akemi Gálvez,Akemi Gálvez,Iztok Fister Association rule mining is a method for identification of dependence rules between features in a transaction database. In the past years, researchers applied the method using features consisting of categorical attributes. Rarely, numerical attributes were used in these studies. In this paper, we… Springer International Publishing	2018-01-01
Bat Algorithm Swarm Robotics Approach for Dual Non-cooperative Search with Self-centered Mode Authors: Suárez, Patricia,Gálvez, Akemi,Fister, Iztok,Fister, Iztok,Osaba, Eneko,Del Ser, Javier,Iglesias, Andrés This paper presents a swarm robotics approach for dual non-cooperative search, where two robotic swarms are deployed within a map with the goal to find their own target point, placed at an unknown location of the map. We consider the self-centered mode, in which each swarm tries to solve its own… Springer International Publishing	2018-01-01
Positioning and Digital Maps Authors: Rafael Toledo-Moreo,José María Armingol,Javier Sánchez-Cubillo,Miguel Clavijo,Basam Musleh,Felipe Jiménez,Arturo de la Escalera,Javier Del Ser,Jose E. Naranjo,Ignacio Olabarrieta A reliable positioning system is essential for the development of intelligent vehicles. This chapter provides an overview of different technologies and techniques that are crucial to understand modern positioning systems onboard road vehicles. It is written for the purpose of serving as a guide to… Elsevier BV	2018-01-01
Agent-Based Modelling to Assess Community Food Security and Sustainable Livelihoods Authors: Dobbie, Samantha, Louise,Schreckenberg, Kathrin,Dyke, James,Schaafsma, Marije,Balbi, Stefano We present a methodological approach for constructing an agent-based model (ABM) to assess community food security and variation among livelihood trajectories, using rural Malawi as a case study. The approach integrates both quantitative and qualitative data to explore how interactions between… Journal of Artificial Societies and Social Simulation	2018-01-01
Community Detection in Weighted Directed Networks Using Nature-Inspired Heuristics Authors: Osaba, Eneko,Del Ser, Javier,Camacho, David,Galvez, Akemi,Iglesias, Andres,Fister, Iztok,Fister, Iztok Finding groups from a set of interconnected nodes is a recurrent paradigm in a variety of practical problems that can be modeled as a graph, as those emerging from Social Networks. However, finding an optimal partition of a graph is a computationally complex task, calling for the development of… Springer International Publishing	2018-01-01
On the Design and Tuning of Machine Learning Models for Language Toxicity Classification in Online Platforms Authors: William Miller,Javier Del Ser,Javier Del Ser,Maciej Rybinski,José F. Aldana-Montes,Miren Nekane Bilbao One of the most concerning drawbacks derived from the lack of supervision in online platforms is their exploitation by misbehaving users to deliver offending (toxic) messages while remaining unknown themselves. Given the huge volumes of data handled by these platforms, the detection of toxicity in… Springer International Publishing	2018-01-01
A Bio-inspired Approach for Collaborative Exploration with Mobile Battery Recharging in Swarm Robotics Authors: Javier Sánchez-Cubillo,Akemi Gálvez,Akemi Gálvez,Maria Carrillo,Miren Nekane Bilbao,Javier Del Ser,Javier Del Ser,Eneko Osaba,Andrés Iglesias,Andrés Iglesias,Ian Gallardo Swarm Robotics are widely conceived as the development of new computationally efficient tools and techniques aimed at easing and enhancing the coordination of multiple robots towards collaboratively accomplishing a certain mission or task. Among the different criteria under which the performance of… Springer International Publishing	2018-01-01
Extending the Speed-Constrained Multi-objective PSO (SMPSO) with Reference Point Based Preference Articulation Authors: Antonio J. Nebro,Carlos A. Coello Coello,Javier Del Ser,Javier Del Ser,Juan J. Durillo,José García-Nieto,Antonio Benítez-Hidalgo,José F. Aldana-Montes,Cristóbal Barba-González The Speed-constrained Multi-objective PSO (SMPSO) is an approach featuring an external bounded archive to store non-dominated solutions found during the search and out of which leaders that guide the particles are chosen. Here, we introduce SMPSO/RP, an extension of SMPSO based on the idea of… Springer International Publishing	2018-01-01
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… Abstract Environmental perception represents, because of its complexity, a challenge for Intelligent Transport Systems due to the great variety of situations and different elements that can happen in road environments and that must be faced by these systems. In connection with this, so far there… Elsevier BV	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
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
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
Temporal and spatial variations of the absolute reflectivity of Jupiter and Saturn from 0.38 to 1.7μm with PlanetCam-UPV/EHU Authors: Ricardo Hueso,Jose Félix Rojas,I. Mendikoa,Agustín Sánchez-Lavega,Javier López-Santiago,Santiago Pérez-Hoyos 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
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 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 family of… Elsevier BV	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 (28-50 cm) 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… 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