Publications

Displaying 801 - 825 of 1227

Publication	Date
PATHS: Personalising access to cultural heritage spaces Authors: Fernie K.,Griffiths J.,Stevenson M.,Clough P.,Goodale P.,Hall M.,Archer P.,Chandrinos K.,Agirre E.,De Lacalle O.L. Digitisation of the cultural heritage means that a significant amount of material is now available through online digital library portals. However, the vast quantity of cultural heritage material can also be overwhelming for many users who lack knowledge of the collections, subject knowledge and… IEEE	2012-09-01
Approaching Sentiment Analysis by using semi-supervised learning of multi-dimensional classifiers Authors: Manuel Lucania,Jose A. Lozano,Iñaki Inza,J.D. Rodriguez,Jonathan Ortigosa-Hernández,Leandro Alzate Sentiment Analysis is defined as the computational study of opinions, sentiments and emotions expressed in text. Within this broad field, most of the work has been focused on either Sentiment Polarity classification, where a text is classified as having positive or negative sentiment, or… Elsevier BV	2012-09-01
A high-temporal resolution algorithm to discriminate shockable from nonshockable rhythms in adults and children Authors: Elisabete Aramendi,Unai Irusta,Jesus Ruiz,Sofía Ruiz de Gauna,Erik Alonso,Unai Ayala To design the core algorithm of a high-temporal resolution rhythm analysis algorithm for automated external defibrillators (AEDs) valid for adults and children. Records from adult and paediatric patients were used all together to optimize and test the performance of the algorithm.A total of 574… Elsevier BV	2012-09-01
On the design of an heuristically optimized multiband spectrum sensing approach for cognitive radio systems Authors: A. Alonso,Uli Kretzschmar,J. Del Ser,Sergio Gil-Lopez,Armando Astarloa,M. Garay This extended abstract outlines a novel optimization approach for multi-band linear collaborative spectrum (LCS) sensing based on harmony search heuristics. Besides, the description of a centralized system architecture is also included in this manuscript, which is capable of processing the captured… IEEE	2012-09-01
A hybrid harmony search algorithm for the spread spectrum radar polyphase codes design problem Authors: Ángel M. Pérez-Bellido,Jose A. Portilla-Figueras,Javier Del Ser,Sancho Salcedo-Sanz,Sergio Gil-Lopez,José María Cabero In this paper we present the application of a hybrid harmony search (HS) algorithm to the Spread-Spectrum Radar Polyphase (SSRP) codes design. Such a design can be formulated as a non-linear max-min optimization problem, hard to be solved using classical numerical techniques. Soft-computing… Elsevier BV	2012-09-01
Hydrofracture diagnosis in open-hole and steel-cased wells using borehole resistivity measurements Authors: Carlos Torres-Verdín,David Pardo This work numerically evaluates the possibility of using electromagnetic (EM) measurements to diagnose and quantify hydraulic fractures that are artificially generated in a horizontal well. Hydrofractures are modeled as thin disks that are possibly non-perpendicular to the well, and are filled with… Society of Exploration Geophysicists	2012-09-01
Flexible Channel Coding Approach for Short-Length Codewords Authors: Mikel Hernaez,Javier Del Ser,Pedro M. Crespo 4 pages; submitted to IEEE Communications Letters Institute of Electrical and Electronics Engineers (IEEE)	2012-09-01
Differentiation in the Cloud: Methodology for Integrating Customer Values in Experience Design Authors: Bronan McCabe,Javier Del Ser,Kaisa Koskela-Huotari,Kaarina Karppinen,Andrey Sirotkin How do organizations know they are designing products and services that their customers will value? This paper describes the initial results of the first four stages of a methodology for integrating customer Values in Experience design (ViEx). The theory of universal value structure was adapted to… IEEE	2012-09-01
Mobile clouds: How to find opportunities Authors: Parishad Karimi,Mohammad Javad Salehi,Ghazal Fazelnia,Babak Hossein Khalaj,Marcos Katz,Javier Del Ser Smartphones can be regarded as resource pools which are capable of communicating with their outside world using both short-range and long-range links. Such communication capabilities provide a unique opportunity for sharing resources, resulting in new possibilities for end users. In this paper, we… IEEE	2012-09-01
A comparative study of two hybrid grouping evolutionary techniques for the capacitated P-median problem Authors: Itziar Landa-Torres,J. Del Ser,Sergio Gil-Lopez,Jose A. Portilla-Figueras,O. Alonso-Garrido,Sancho Salcedo-Sanz This paper addresses the application of two different grouping-based algorithms to the so-called capacitated P-median problem (CPMP). The CPMP is an NP-complete problem, well-known in the operations research field, arising from a wide spectrum of applications in diverse fields such as… Elsevier BV	2012-09-01
On the stability of self-similar solutions of 1D cubic Schrödinger equations Authors: Susana Gutiérrez,Luis Vega 38 pages, 8 figures Springer Science and Business Media LLC	2012-08-28
Molecular Dynamics Simulations of Iron- and Aluminum-Loaded Serum Transferrin: Protonation of Tyr188 Is Necessary To Prompt Metal Release Authors: Mujika, J.I.,Escribano, B.,Akhmatskaya, E.,Ugalde, J.M.,Lopez, X. Serum transferrin (sTf) carries iron in blood serum and delivers it into cells by receptor-mediated endocytosis. The protein can also bind other metals, including aluminum. The crystal structures of the metal-free and metal-loaded protein indicate that the metal release process involves an opening… American Chemical Society (ACS)	2012-08-23
A novel heuristic approach for distance- and connectivity-based multihop node localization in wireless sensor networks Authors: Itziar Landa-Torres,Javier Del Ser,Massimo Vecchio,Diana Manjarres,Sergio Gil-Lopez,Roberto Lopez-Valcarce The availability of accurate location information of constituent nodes becomes essential in many applications of wireless sensor networks. In this context, we focus on anchor-based networks where the position of some few nodes are assumed to be fixed and known a priori, whereas the location of all… Springer Science and Business Media LLC	2012-08-02
Ground-based observations of the long-term evolution and death of Saturn’s 2010 Great White Spot Authors: Ricardo Hueso,Agustín Sánchez-Lavega,Jon Legarreta,Enrique Garcia-Melendo,David Barrado-Navascués,M. Delcroix,Santiago Pérez-Hoyos,Josep M. Gomez-Forrellad,Teresa del Río-Gaztelurrutia,Jorge Lillo We report on the long-term evolution of Saturn’s sixth Great White Spot (GWS) event that initiated at northern mid-latitudes of the planet on December 5th, 2010 (Fletcher, L. et al. [2011]. Science 332, 1413–1417; Sanchez-Lavega, A. et al. [2011]. Nature 475, 71–74; Fischer, G. et al. [2011].… Elsevier BV	2012-08-01
A new grouping genetic algorithm for clustering problems Authors: L. E. Agustín-Blas,Sancho Salcedo-Sanz,Jose A. Portilla-Figueras,J. Del Ser,Silvia Jiménez-Fernández,L. Carro-Calvo Highlights? A hybrid grouping-encoding algorithm for clustering problems is presented. ? Details on the encoding, operators and parallelization are given. ? Results in synthetic and real clustering problems are provided. In this paper we present a novel grouping genetic algorithm for clustering… Elsevier BV	2012-08-01
Evaluating the Internationalization Success of Companies Through a Hybrid Grouping Harmony Search—Extreme Learning Machine Approach Authors: J.M. Leiva-Murillo,Sergio Gil-Lopez,M. Miranda,Itziar Landa-Torres,Sancho Salcedo-Sanz,J. Del Ser,María Jesús Segovia-Vargas,E. G. Ortiz-Garcia The internationalization of a company is widely understood as the corporative strategy for growing through external markets. It usually embodies a hard process, which affects diverse activities of the value chain and impacts on the organizational structure of the company. There is not a general… Institute of Electrical and Electronics Engineers (IEEE)	2012-08-01
Dynamic modeling of the morphology of multiphase waterborne polymer particles Authors: Akhmatskaya, E.,Asua, J.M. Multiphase waterborne polymer particles provide advantages in more demanding applications, and their performance depends on particle morphology. Currently, no dynamic model for the prediction of the development of the morphology of multiphase latex particles is available. In this work, a model was… Springer Science and Business Media LLC	2012-07-29
Evolving NK-complexity for evolutionary solvers Authors: Alexander Mendiburu,Jose A. Lozano,Roberto Santana In this paper we empirically investigate the structural characteristics that can help to predict the complexity of NK-landscape instances for estimation of distribution algorithms (EDAs). We evolve instances that maximize the EDA complexity in terms of its success rate. Similarly, instances that… ACM	2012-07-07
Effects of Second-Order Extreme Waves on the Dynamics of a Non-Linear Floating Body Authors: Vincenzo Nava,Felice Arena Nowadays technical and scientific communities are increasingly interested in the development of technologies for floating devices which can serve different purposes both in coastal and offshore environment. Thus, strong effort is required in the development of correct and efficient algorithms for… American Society of Mechanical Engineers	2012-07-01
Editorial Authors: S. Gil-López,S. Salcedo-Sanz,J. Del Ser Elsevier BV	2012-07-01
An analysis of the use of probabilistic modeling for synaptic connectivity prediction from genomic data Authors: Jose A. Lozano,Alexander Mendiburu,Roberto Santana The identification of the specific genes that influence particular phenotypes is a common problem in genetic studies. In this paper we address the problem of determining the influence of gene joint expression in synapse predictability. The question is posed as an optimization problem in which the… IEEE	2012-06-01
Structural transfer using EDAs: An application to multi-marker tagging SNP selection Authors: Alexander Mendiburu,Roberto Santana,Jose A. Lozano In this paper we investigate the question of transfer learning in evolutionary optimization using estimation of distribution algorithms. We propose a framework for transfer learning between related optimization problems by means of structural transfer. Different methods for incrementing or… IEEE	2012-06-01
Suppression of the cardiopulmonary resuscitation artefacts using the instantaneous chest compression rate extracted from the thoracic impedance Authors: Jo Kramer-Johansen,Trygve Eftestøl,Elisabete Aramendi,Unai Ayala,Unai Irusta,Erik Alonso To demonstrate that the instantaneous chest compression rate can be accurately estimated from the transthoracic impedance (TTI), and that this estimated rate can be used in a method to suppress cardiopulmonary resuscitation (CPR) artefacts.A database of 372 records, 87 shockable and 285 non-… Elsevier BV	2012-06-01
Foraging Ecology in Mehely's Horseshoe Bats: Influence of Habitat Structure and Water Availability Authors: Inmaculada Arostegui,Urtzi Goiti,Joxerra Aihartza,Inazio Garin,Egoitz Salsamendi,David Almenar The climate in Mediterranean ecosystems is characterised by aestival hot temperatures and water shortages which may affect the behaviour of bats living in these environments. We evaluated the influence of habitat type, habitat structure, and water availability on the foraging behaviour of the… Museum and Institute of Zoology at the Polish Academy of Sciences	2012-06-01
Cloud structure of Saturn’s 2010 storm from ground-based visual imaging Authors: Sanz-Requena, J. F.,Pérez-Hoyos, S.,Sánchez-Lavega, A.,del Río-Gaztelurrutia, T.,Barrado-Navascués, D.,Colas, F.,Lecacheux, J.,Parker, D. International audience; We present a study of the vertical cloud structure for the initial stage of the Great White Spot (GWS), a giant storm that developed in Saturn in December 2010, using ground-based visual images. We focus in the characterization of the undisturbed atmosphere preceding the… Elsevier BV	2012-05-01