Now showing items 21-40 of 41

    • Thumbnail

      Evaluation of two virtual cursors for assisting web access to people with motor impairments 

      Pérez López, Juan Eduardo; Valencia Parafita, Xabier ORCID; Arrue Recondo, Myriam; Abascal González, Julio ORCID (Elsevier, 2019-08-02)
      People with motor impairments (MI) may face accessibility barriers when using computers due to their health conditions and therefore need to use alternative devices to a standard mouse for pointing and clicking in graphical ...
    • Thumbnail

      Evolving Gaussian process kernels from elementary mathematical expressions for time series extrapolation 

      Román Txopitea, Ibai; Santana Hermida, Roberto ORCID; Mendiburu Alberro, Alexander; Lozano Alonso, José Antonio (Elsevier, 2021-10-28)
      [EN]Choosing the best kernel is crucial in many Machine Learning applications. Gaussian Processes are a state-of-the-art technique for regression and classification that heavily relies on a kernel function. However, in the ...
    • Thumbnail

      Ideal and Predictable Hit Ratio for Matrix Transposition in Data Caches 

      Pedro Zapater, Alba; Rodríguez Lafuente, Clemente; Segarra, Juan; Gran Tejero, Rubén; Viñals-Yúfera, Víctor (MDPI, 2020-02-03)
      Matrix transposition is a fundamental operation, but it may present a very low and hardly predictable data cache hit ratio for large matrices. Safe (worst-case) hit ratio predictability is required in real-time systems. ...
    • Thumbnail

      Inclusive Web Empirical Studies in Remote and In-Situ Settings: A User Evaluation of the RemoTest Platform 

      Arrue Recondo, Myriam; Valencia Parafita, Xabier ORCID; Pérez López, Juan Eduardo; Moreno, Lourdes; Abascal González, Julio ORCID (Taylor & Francis, 2019-04-21)
      Web accessibility evaluation requires tests to be carried out with real users with disabilities performing real tasks or activities. To recruit an appropriate group of users and to observe their performance in the real ...
    • Thumbnail

      JolasMATIKA: An Experience for Teaching and Learning Computing Topics From University to Primary Education 

      Larraza Mendiluze, Edurne; Arbelaiz Gallego, Olatz ORCID; Arruarte Lasa, Ana Jesús ORCID; Lucas Múgica, José Francisco; Garay Vitoria, Néstor ORCID (IEEE, 2020-08)
      Contribution: A learning-by-teaching methodology through games can be used to promote informatics (computer science) in primary and secondary education. Applying the proposed activities can change students' perception of ...
    • Thumbnail

      Kernel density estimation in accelerators: Implementation and performance evaluation 

      López Novoa, Unai; Mendiburu Alberro, Alexander; Miguel Alonso, José (ACM, 2016-02-01)
      Kernel density estimation (KDE) is a popular technique used to estimate the probability density function of a random variable. KDE is considered a fundamental data smoothing algorithm, and it is a common building block in ...
    • Thumbnail

      Large Scale Linguistic Processing of Tweets to Understand Social Interactions among Speakers of Less Resourced Languages: The Basque Case 

      Fernández de Landa, Joseba; Agerri Gascón, Rodrigo ORCID; Alegría Loinaz, Iñaki ORCID (MDPI, 2019-06-13)
      Social networks like Twitter are increasingly important in the creation of new ways of communication. They have also become useful tools for social and linguistic research due to the massive amounts of public textual data ...
    • Thumbnail

      Longitudinal Study of Two Virtual Cursors for People With Motor Impairments: A Performance and Satisfaction Analysis on Web Navigation 

      Pérez López, Juan Eduardo; Arrue Recondo, Myriam; Valencia Parafita, Xabier ORCID; Abascal González, Julio ORCID (IEEE, 2020)
      The lack of dexterity in the upper limbs of people with motor impairments may prevent the use of standard pointing devices, such as mice, to access graphical user interfaces. In these cases, pointing and clicking are usually ...
    • Thumbnail

      Mateda-2.0: Estimation of Distribution Algorithms in MATLAB 

      Santana Hermida, Roberto ORCID; Bielza, Concha; Larrañaga, Pedro; Lozano Alonso, José Antonio; Echegoyen, Carlos; Mendiburu Alberro, Alexander; Armañanzas Arnedillo, Rubén; Shakya, Siddartha (Journal of Statistical Software, UCLA Dept. Statistics, 2010-07)
      This paper describes Mateda-2.0, a MATLAB package for estimation of distribution algorithms (EDAs). This package can be used to solve single and multi-objective discrete and continuous optimization problems using EDAs based ...
    • Thumbnail

      Measuring Language Distance of Isolated European Languages 

      Gamallo, Pablo; Pichel Campos, José Ramom; Alegría Loinaz, Iñaki ORCID (MDPI, 2020-03-27)
      Phylogenetics is a sub-field of historical linguistics whose aim is to classify a group of languages by considering their distances within a rooted tree that stands for their historical evolution. A few European languages ...
    • Thumbnail

      Multi-objective environmental model evaluation by means of multidimensional kernel density estimators: Efficient and multi-core implementations 

      López Novoa, Unai; Sáenz Aguirre, Jon ORCID; Mendiburu Alberro, Alexander; Miguel Alonso, José; Errasti Arrieta, Iñigo; Esnaola Aldanondo, Ganix; Ezcurra Talegón, Agustín; Ibarra Berastegi, Gabriel (2015-01-01)
      We propose an extension to multiple dimensions of the univariate index of agreement between Probability Density Functions (PDFs) used in climate studies. We also provide a set of high-performance programs targeted both to ...
    • Thumbnail

      Multilingual audio information management system based on semantic knowledge in complex environments 

      López de Ipiña Peña, Miren Karmele; Barroso Moreno, Nora; Calvo Salomón, Pilar María; Hernández Gómez, María del Carmen ORCID; Ezeiza Ramos, Aitzol ORCID; Susperregui Aseguinolaza, Unai; Fernández Gómez de Segura, Elsa (Springer, 2020)
      This paper proposes a multilingual audio information management system based on semantic knowledge in complex environments. The complex environment is defined by the limited resources (financial, material, human, and audio ...
    • Thumbnail

      NewOneVersusOneAll method: NOV@ 

      Arruti Illarramendi, Andoni ORCID; Mendialdua Beitia, Iñigo ORCID; Sierra Araujo, Basilio ORCID; Lazkano Ortega, Elena; Jauregi Iztueta, Ekaitz (Elsevier, 2014-04-19)
      Binarization strategies decompose the original multi-class dataset into multiple two-class subsets, learning a different binary model for each new subset. One-vs-All (OVA) and One-vs-One (OVO) are two of the most well-known ...
    • Thumbnail

      On the Analysis of Speech and Disfluencies for Automatic Detection of Mild Cognitive Impairment 

      López de Ipiña Peña, Miren Karmele; Martínez de Lizarduy Sturtze, Unai; Calvo Salomón, Pilar María; Beitia Bengoa, Blanca; García Melero, Joseba; Fernández Gómez de Segura, Elsa; Ecay Torres, Miriam; Faúndez Zanuy, Marcos; Sanz, P. (Springer, 2020-10)
      Alzheimer's disease is characterized by a progressive and irreversible cognitive deterioration. In a previous stage, the so-called Mild Cognitive Impairment or cognitive loss appears. Nevertheless, this previous stage does ...
    • Thumbnail

      PCTBagging: From inner ensembles to ensembles. A trade-off between discriminating capacity and interpretability 

      Ibarguren Arrieta, Igor; Pérez de la Fuente, Jesús María ORCID; Muguerza Rivero, Javier Francisco; Arbelaiz Gallego, Olatz ORCID; Yera Gil, Ainhoa ORCID (Elsevier, 2022-01)
      [EN] The use of decision trees considerably improves the discriminating capacity of ensemble classifiers. However, this process results in the classifiers no longer being interpretable, although comprehensibility is a ...
    • Thumbnail

      Reducing the WCET and analysis time of systems with simple lockable instruction caches 

      Pedro Zapater, Alba; Segarra, Juan; Gran Tejero, Rubén; Viñals, Víctor; Rodríguez Lafuente, Clemente (Plos One, 2020-01)
      One of the key challenges in real-time systems is the analysis of the memory hierarchy. Many Worst-Case Execution Time (WCET) analysis methods supporting an instruction cache are based on iterative or convergence algorithms, ...
    • Thumbnail

      Routing in MobileWireless Sensor Networks: A Leader-Based Approach 

      Burgos Barrio, Unai; Amozarrain Pérez, Ugaitz; Gómez-Calzado, Carlos; Lafuente Rojo, Julián Alberto (MDPI, 2017-07)
      This paper presents a leader-based approach to routing in Mobile Wireless Sensor Networks (MWSN). Using local information from neighbour nodes, a leader election mechanism maintains a spanning tree in order to provide the ...
    • Thumbnail

      Smart Meeting Room Usage Information and Prediction by Modelling Occupancy Profiles 

      Saralegui Vallejo, Unai; Antón, Miguel Ángel; Arbelaiz Gallego, Olatz ORCID; Muguerza Rivero, Javier Francisco (MDPI, 2019-01-02)
      The monitoring of small houses and rooms has become possible due to the advances in IoT sensors, actuators and low power communication protocols in the last few years. As buildings are one of the biggest energy consuming ...
    • Thumbnail

      Towards a standard methodology to evaluate internal cluster validity indices 

      Gurrutxaga Goikoetxea, Ibai ORCID; Muguerza Rivero, Javier Francisco; Arbelaiz Gallego, Olatz ORCID; Pérez de la Fuente, Jesús María ORCID; Martín, José I. (Elsevier, 2011-02-01)
      The evaluation and comparison of internal cluster validity indices is a critical problem in the clustering area. The methodology used in most of the evaluations assumes that the clustering algorithms work correctly. We ...
    • Thumbnail

      Towards Autonomous Defense of SDN Networks Using MuZero Based Intelligent Agents 

      Gabirondo López, Jon; Egaña Zubia, Jon; Miguel Alonso, José ORCID; Orduna Urrutia, Raúl (IEEE, 2021)
      The Software Defined Networking (SDN) paradigm enables the development of systems that centrally monitor and manage network traffic, providing support for the deployment of machine learning-based systems that automatically ...