Publications

High-accuracy adaptive modeling of the energy distribution of a meniscus-shaped cell culture in a Petri dish
Authors: Ignacio Gomez-Revuelto,David Pardo,David Pardo,David Pardo,Luis E. Garcia-Castillo
Cylindrical Petri dishes embedded in a rectangular waveguide and exposed to a polarized electromagnetic wave are often used to grow cell cultures. To guarantee the success of these cultures, it is necessary to enforce that the specific absorption rate distribution is sufficiently high and uniform… Elsevier BV

One-year-ahead energy demand estimation from macroeconomic variables using computational intelligence algorithms
Authors: Salcedo-Sanz, Sancho,Muñoz-Bulnes, J.,Portilla-Figueras, Jose Antonio,Del Ser, Javier
Abstract This paper elaborates on a problem of one-year ahead estimation of energy demand based on macroeconomic variables. To this end, two different Computational Intelligence approaches are herein evaluated: (1) a modified Harmony Search (HS) optimization algorithm with an exponential… Elsevier BV

Dealing with the evaluation of supervised classification algorithms
Authors: Jose A. Lozano,Iñaki Inza,Guzmán Santafé
Performance assessment of a learning method related to its prediction ability on independent data is extremely important in supervised classification. This process provides the information to evaluate the quality of a classification model and to choose the most appropriate technique to solve the… Springer Science and Business Media LLC

Mechanisms of Toxicity of Ag Nanoparticles in Comparison to Bulk and Ionic Ag on Mussel Hemocytes and Gill Cells
Authors: Katsumiti Kodo Filho, Alberto,Gilliland, Douglas,Arostegui Madariaga, Inmaculada,Cajaraville Bereciartua, Miren Pilare
Silver nanoparticles (Ag NPs) are increasingly used in many products and are expected to end up in the aquatic environment. Mussels have been proposed as marine model species to evaluate NP toxicity in vitro. The objective of this work was to assess the mechanisms of toxicity of Ag NPs on mussel… Public Library of Science (PLoS)

Multi-view classification of psychiatric conditions based on saccades
Authors: Roberto Santana,Alexander Mendiburu,Jose A. Lozano
Graphical abstractDisplay Omitted HighlightsUsing saccadic information to classify different psychiatric conditions.Classifiers could be used to reduce the possible diagnoses for a given patient.Simple descriptors are extracted from the saccades.Fictitious saccades help to improve the… Elsevier BV

Cytotoxicity of Au, ZnO and SiO₂NPs usingin vitroassays with mussel hemocytes and gill cells: Relevance of size, shape and additives
Authors: Inmaculada Arostegui,Douglas Gilliland,Miriam Oron,Miren P. Cajaraville,Eugenia Valsami-Jones,Alberto Katsumiti
AbstractMetal-bearing nanoparticles (NPs) possess unique physico-chemical characteristics that make them useful for an increasing number of industrial products and applications, but could also confer them a higher toxicity due to their higher reactivity compared to bulk forms of the same materials… Informa UK Limited

Why are these similar? Investigating item similarity types in a large digital library
Authors: German Rigau,Mark Stevenson,Aitor Gonzalez-Agirre,Eneko Agirre,Nikolaos Aletras
We introduce a new problem, identifying the type of relation that holds between a pair of similar items in a digital library. Being able to provide a reason why items are similar has applications in recommendation, personalization, and search. We investigate the problem within the context of… Wiley

An Artificial Bioindicator System for Network Intrusion Detection
Authors: Christian Blum,Pedro Pinacho Davidson,Jose A. Lozano
An artificial bioindicator system is developed in order to solve a network intrusion detection problem. The system, inspired by an ecological approach to biological immune systems, evolves a population of agents that learn to survive in their environment. An adaptation process allows the… MIT Press - Journals

Mathematical programming strategies for solving the minimum common string partition problem
Authors: Christian Blum,Christian Blum,Pedro Pinacho Davidson,Pedro Pinacho Davidson,Jose A. Lozano
The minimum common string partition problem is an NP-hard combinatorial optimization problem with applications in computational biology. In this work we propose the first integer linear programming model for solving this problem. Moreover, on the basis of the integer linear programming model we… Elsevier BV

Goal-oriented adaptivity using unconventional error representations for the 1D Helmholtz equation
Authors: Darrigrand, Vincent,Pardo, David,Muga, Ignacio
In this work, the error of a given output functional is represented using bilinear forms that are different from those given by the adjoint problem. These representations can be employed to design novel h, p, and hp energy-norm and goal-oriented adaptive algorithms. Numerical results in 1D show… Elsevier BV

Mixtures of Generalized Mallows models for solving the quadratic assignment problem
Authors: Josu Ceberio,Alexander Mendiburu,Roberto Santana,Jose A. Lozano
Recently, distance-based exponential probability models have demonstrated their validity in the context of estimation of distribution algorithms when solving permutationbased combinatorial optimisation problems. However, despite their successful performance, some of these models are unimodal, and,… IEEE

The Use of Pulse Oximetry to Determine Hypoxemia in Acute Exacerbations of COPD
Authors: José M. Quintana,Inmaculada Arostegui,Anette Unzurrunzaga,Susana Garcia-Gutierrez,Esther Pulido,Cristóbal Esteban,Maria Soledad Gallardo
There is little evidence that the guideline-recommended oxygen saturation of 92% is the best cut-off point for detecting hypoxemia in COPD exacerbations.To detect and validate pulse oximetry oxygen saturation cut-off values likely to detect hypoxemia in patients with aeCOPD, to explore the… Informa UK Limited

A review of distances for the Mallows and Generalized Mallows estimation of distribution algorithms
Authors: Josu Ceberio,Ekhine Irurozki,Alexander Mendiburu,Jose A. Lozano
The Mallows (MM) and the Generalized Mallows (GMM) probability models have demonstrated their validity in the framework of Estimation of distribution algorithms (EDAs) for solving permutation-based combinatorial optimisation problems. Recent works, however, have suggested that the performance of… Springer Science and Business Media LLC

A Coral Reefs Optimization algorithm with Harmony Search operators for accurate wind speed prediction
Authors: Salcedo-Sanz, Sancho,Pastor-Sanchez, Alvaro,Del Ser, Javier,Prieto, Luis,Geem, Zong-Woo
Abstract This paper introduces a new hybrid bio-inspired solver which combines elements from the recently proposed Coral Reefs Optimization (CRO) algorithm with operators from the Harmony Search (HS) approach, which gives rise to the coined CRO-HS optimization technique. Specifically, this novel… Elsevier BV

The linear ordering problem revisited
Authors: Josu Ceberio,Alexander Mendiburu,Jose A. Lozano
Abstract The Linear Ordering Problem is a popular combinatorial optimisation problem which has been extensively addressed in the literature. However, in spite of its popularity, little is known about the characteristics of this problem. This paper studies a procedure to extract static information… Elsevier BV

Fast 1D inversion of logging-while-drilling resistivity measurements for improved estimation of formation resistivity in high-angle and horizontal wells
Authors: Pardo, David,Torres-Verdín, Carlos
We have developed an efficient inversion method to estimate layer-by-layer electric resistivity from logging-while-drilling electromagnetic induction measurements. The method assumes a 1D model based on planarly layered transversely isotropic formations with known bed boundaries, penetrated by… Society of Exploration Geophysicists

Reliability and accuracy of the thoracic impedance signal for measuring cardiopulmonary resuscitation quality metrics
Authors: Mohamud Daya,Elisabete Aramendi,Sofía Ruiz de Gauna,James K. Russell,Unai Ayala,Digna M. González-Otero,Jesus Ruiz,Erik Alonso
To determine the accuracy and reliability of the thoracic impedance (TI) signal to assess cardiopulmonary resuscitation (CPR) quality metrics.A dataset of 63 out-of-hospital cardiac arrest episodes containing the compression depth (CD), capnography and TI signals was used. We developed a chest… Elsevier BV

An extremely high-altitude plume seen at Mars’ morning terminator
Authors: C. Pellier,D. Parker,J. M. Gómez-Forrellad,Agustín Sánchez-Lavega,D. Peach,Enrique Garcia-Melendo,Santiago Pérez-Hoyos,A. García Muñoz,Miguel Lopez-Valverde,Miguel Lopez-Valverde,M. Delcroix,J. Phillips,W. Jaeschke,F. González-Galindo,F. González-Galindo
The Martian limb (that is, the observed 'edge' of the planet) represents a unique window into the complex atmospheric phenomena occurring there. Clouds of ice crystals (CO2 ice or H2O ice) have been observed numerous times by spacecraft and ground-based telescopes, showing that clouds are typically… Springer Science and Business Media LLC

Venus's major cloud feature as an equatorially trapped wave distorted by the wind
Authors: Miguel Lopez-Valverde,Miguel Lopez-Valverde,P. Machado,Agustín Sánchez-Lavega,Javier Peralta,David Luz
AbstractThe superrotation of the atmospheres of slowly rotating bodies is a long‐standing problem yet unsolved in atmospheric dynamics. On Venus, the most extreme case known of superrotation, this is accompanied and influenced by a recurrent planetary‐scale cloud structure, known as the Y feature.… American Geophysical Union (AGU)

Computational cost of isogeometric multi-frontal solvers on parallel distributed memory machines
Authors: Maciej Woźniak,Victor M. Calo,David Pardo,David Pardo,David Pardo,Maciej Paszyński,Lisandro Dalcin
This paper derives theoretical estimates of the computational cost for isogeometric multi-frontal direct solver executed on parallel distributed memory machines. We show theoretically that for the $C^{p-1}$ global continuity of the isogeometric solution, both the computational cost and the… Elsevier BV

Inputazio tekniken errendimenduaren ebaluazioa bi neurketako luzeranzko datuetan
Authors: Aguirre Larracoechea, Urko,Arostegui Madariaga, Inmaculada,Quintana, José M.
Neurketa errepikatuetan oinarrituriko behaketa-ikerketak menpeko aldagaien aldaketak denboran zehar aztertzeko erabiltzen dira. Bi neurketa baizik bakarrik egiten ez direnean, ikerketa helburu nagusietariko bat izan daiteke menpeko aldagaiaren batez besteko aldaketa aurresaten dituzten faktoreak… UPV/EHU Press

Eredu aurresaleetako aldagai jarraituen kategorizaziorik hoberena lortzeko metodologia proposamena: aplikazio zehatza medikuntzan
Authors: Barrio Beraza, Irantzu,Arostegui Madariaga, Inmaculada,García Gutiérrez, Susana
Medikuntzan parametro kliniko asko kategorizatzen dira erabaki prozesuak errazteko. Areago arau aurresale klinikoen garapenean ohiko teknika bat da aldagaien kategorizazio hau. Aldagai aurresale bat kategorizatzerakoan kategoria kopurua aldagai aurresale eta erantzulearen arteko erlazioaren menpe… UPV/EHU Press

Multidimensional Learning from Crowds: Usefulness and Application of Expertise Detection
Authors: Jerónimo Hernández-González,Jose A. Lozano,Iñaki Inza
Learning from crowds is a classification problem where the provided training instances are labeled by multiple usually conflicting annotators. In different scenarios of this problem, straightforward strategies show an astonishing performance. In this paper, we characterize the crowd scenarios where… Wiley

Semantic Information Fusion of Linked Open Data and Social Big Data for the Creation of an Extended Corporate CRM Database
Authors: Torre-Bastida, Ana I.,Villar-Rodriguez, Esther,Del Ser, Javier,Gil-Lopez, Sergio
The amount of on-line available open information from heterogeneous sources and domains is growing at an extremely fast pace, and constitutes an important knowledge base for the consideration of industries and companies. In this context, two relevant data providers can be highlighted: the “Linked… Springer International Publishing

Adaptive simulation of unsteady flow past the submerged part of a floating wind turbine platform
Authors: Jansson J.,Nava V.,Sanchez M.,Aguirre G.,De Abreu R. V.,Hoffman J.,Villate J. L.
Offshore floating platforms for wind turbines represent challenging concepts for design- ers trying to combine an optimal compromise between cost effectiveness and performance. Modelling of the hydrodynamic behaviour of the structure is still the subject of wide de- bate in the… CIMNE