Now showing items 1-20 of 122

    • A comparison study of different algorithms for energy-aware placement of virtual machines 

      Olvera, Alex; Xhafa Xhafa, Fatos (Springer, 2018)
      Conference report
      Restricted access - publisher's policy
      Cloud Computing services are essential to modern society. The increasing number of people and organisations using these types of services results in a higher demand in datacenters, which in turn, is raising energy consumption ...
    • A cost-sensitive learning algorithm for fuzzy rule-based classifiers 

      Beck, Sebastian; Mikut, Ralf; Jäkel, Jens (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2004)
      Article
      Open Access
      Designing classifiers may follow different goals. Which goal to prefer among others depends on the given cost situation and the class distribution. For example, a classifier designed for best accuracy in terms of ...
    • A fuzzy inductive approach for rule-based modelling of high level structures in algorithmic composition systems 

      Múgica Álvarez, Francisco; Paz Ortiz, Iván; Nebot Castells, M. Àngela; Romero Merino, Enrique (2015)
      Conference report
      Restricted access - publisher's policy
      Algorithmic composition systems are now widely understood. However, its capacity for producing outputs consistently showing high level structures is still a field of research. In the present work, the Fuzzy Inductive ...
    • A GRASP algorithm to optimize operational costs and regularity of production in mixed-model sequencing problems with forced interruption of operations 

      Bautista Valhondo, Joaquín; Alfaro Pozo, Rocío (Springer, 2018-10-23)
      Part of book or chapter of book
      Restricted access - publisher's policy
      This book constitutes the refereed proceedings of the 18th Conference of the Spanish Association for Artificial Intelligence, CAEPIA 2018, held in Granada, Spain, in October 2018. The 36 full papers presented were carefully ...
    • A hybrid recommender system for improving automatic playlist continuation 

      Gatzioura, Anna; Vinagre, João; Jorge, Alípio Mário; Sànchez-Marrè, Miquel (2019-11-08)
      Article
      Open Access
      Although widely used, the majority of current music recommender systems still focus on recommendations’ accuracy, userpreferences and isolated item characteristics, without evaluating other important factors, like the joint ...
    • A method for assessing parameter impact on control-flow discovery algorithms 

      Ribeiro, Joel; Carmona Vargas, Josep (CEUR-WS.org, 2015)
      Conference report
      Open Access
      Given an event log L, a control-flow discovery algorithm f, and a quality metric m, this paper faces the following problem: what are the parameters in f that mostly influence its application in terms of m when applied ...
    • A methodology for distributed fault diagnosis 

      Gupta, Vikas; Puig Cayuela, Vicenç; Blesa Izquierdo, Joaquim (2016)
      Conference report
      Restricted access - publisher's policy
      In this paper, a methodology for distributed fault diagnosis is proposed. The algorithm places the sensors in a system in such a manner that the partition of a system into various subsystems becomes ...
    • A novel procedure for training L1-L2 support vector machine classifiers 

      Anguita, Davide; Ghio, Alessandro; Oneto, Luca; Reyes Ortiz, Jorge Luis; Ridella, Sandro (2013)
      Conference report
      Restricted access - publisher's policy
      In this work we propose a novel algorithm for training L1-L2 Support Vector Machine (SVM) classifiers. L1-L2 SVMs allow to combine the effectiveness of L2 models and the feature selection characteristics of L1 solutions. ...
    • A second-order distributed Trotter–Suzuki solver with a hybrid CPU–GPU kernel 

      Wittek, Peter; Cucchietti, Fernando M. (Elsevier, 2013-04)
      Article
      Open Access
      The Trotter-Suzuki approximation leads to an efficient algorithm for solving the timedependent Schrödinger equation. Using existing highly optimized CPU and GPU kernels, we developed a distributed version of the algorithm ...
    • A Tabu search algorithm for scheduling independent jobs in computational grids 

      Xhafa Xhafa, Fatos; Carretero Casado, Javier Sebastián; Dorronsoro, Bernabé; Alba, Enrique (2009)
      Article
      Open Access
      The efficient allocation of jobs to grid resources is indispensable for high performance grid-based applications, and it is a computationally hard problem even when there are no dependencies among jobs. We present in this ...
    • A vectorization of synchronization algorithms for OFDM systems 

      Pages Fageda, Carles (Universitat Politècnica de Catalunya, 2009-04-28)
      Master thesis (pre-Bologna period)
      Open Access
      L'objectiu d'aquest projecte és doble. Per una banda, es tracta de crear una llibreria en C++ que ens permeti simular implementacions d'algoritmes en DSP vectorials (que poden realitzar la mateixa operació sobre diverses ...
    • Aceleración con CUDA de Procesos 3D 

      Raya Vaquera, Jose Antonio (Universitat Politècnica de Catalunya, 2009-01-26)
      Master thesis (pre-Bologna period)
      Open Access
      Este proyecto se va a centrar en adaptar el algoritmo de space-carving y algunos procesos de tratamiento de imágenes a CUDA. El space-carving permite obtener representación 3D de un objeto a partir de varias imágenes del ...
    • ACO_R híbrido con múltiples colonias para problemas de optimización continua 

      Blum, Christian; Cardoso, Pedro; Herrera, Francisco (2009)
      Conference report
      Restricted access - publisher's policy
      Este trabajo se centra en algoritmos con colonias de hormigas para resolver problemas de optimización continua. En concreto, se propone una extensión de este tipo de algoritmos hacia un método multi-colonia para incrementar ...
    • AHSPeR: Adaptive Hypermedia System Oriented Toward Personalization of Readings Plans 

      Giugni, Marilin; Grimón Mejías, Francisca de Jesús; Fernández Sánchez, Joaquín; Monguet Fierro, José María; Guerra, Laura (Elsevier, 2011)
      Conference report
      Restricted access - publisher's policy
      The phenomenon of Internet has brought a wide range of communication possibilities and thus a rapid growth of digitized information. Each day the user is overwhelmed with the vast information obtained during the search ...
    • Algorismes parametritzats per al problema de recobriment d'imatges 

      Winand, Tomàs (Universitat Politècnica de Catalunya, 2007-01-14)
      Master thesis (pre-Bologna period)
      Open Access
    • Algorithmic and HPC challenges in parallel tensor computations 

      Kaya, Oguz (Barcelona Supercomputing Center, 2018)
      Conference report
      Open Access
    • Algoritmos numéricos de reconstrucción de conductancias 

      El Baghdadi, Fatima (Universitat Politècnica de Catalunya, 2019-07-01)
      Bachelor thesis
      Open Access
      La idea de este trabajo surge de la investigación que están llevando a cabo mis tutores del departamento de matemáticas de la EEBE. Es una investigación que estudia los problemas inversos ydeduce algoritmos para la ...
    • An algorithmic framework for segmenting trajectories based on spatio-temporal criteria 

      Buchin, Maike; Driemel, Anne; Kreveld, Marc van; Sacristán Adinolfi, Vera (Association for Computing Machinery (ACM), 2010)
      Conference report
      Restricted access - publisher's policy
      In this paper we address the problem of segmenting a trajectory such that each segment is in some sense homogeneous. We formally define different spatio-temporal criteria under which a trajectory can be homogeneous, including ...
    • An investigation into new kernels for categorical variables 

      Villegas García, Marco Antonio (Universitat Politècnica de Catalunya, 2013-01)
      Master thesis
      Open Access
      Kernel-based methods first appeared in the form of support vector machines. Since the first Support Vector Machine (SVM) formulation in 1995, we have seen how the number of proposed kernel functions has quickly grown, ...
    • Analysis and verification of suitable li-ion models as basis for a self-adaptive battery observer 

      Pla Erra, Pol (Universitat Politècnica de Catalunya, 2018-01-10)
      Bachelor thesis
      Restricted access - author's decision
      The purpose of this project is to create and simulate a self-adaptive battery observer using Matlab Simulink. The first phase of the project involves the research of a suitable lithium-ion cell model to cover a wide range ...