Recent Submissions

  • Splatting multiresolution volume data using the Feature Graph 

    Campos, J.; Puig, A.; Tost Pardell, Daniela (2007-10)
    External research report
    Open Access
    We propose to represent classified datasets as a feature graph storing different graphical models and attributes for each feature. This graph allows us to render each feature according to its own characteristics. In addition, ...
  • An analysis of paperclip arbitrage 

    Cabanillas Barbacil, David Conrado; Willmott, Steven Nicolás; Cortés García, Claudio Ulises (2007-12)
    External research report
    Open Access
    While bartering is arguably the world's oldest form of trade there are still many instances where it surprises us. One such case is the remarkable story of Kyle MacDonald who, by means of a sequence of bartering exchanges ...
  • A variational formulation for GTM through time: Theoretical foundations 

    Olier Caparroso, Iván; Vellido Alcacena, Alfredo (2007-10)
    External research report
    Open Access
    Generative Topographic Mapping (GTM) is a latent variable model that, in its standard version, was conceived to provide clustering and visualization of multivariate, real-valued, i.i.d. data. It was also extended to deal ...
  • Distribución del tiempo de ejecución de las metaheurísticas PBIL y CHC aplicadas al problema de la selección de la solución deseada 

    Joan Arinyo, Robert; Luzón, M.V.; Yeguas, E. (2007-10)
    External research report
    Open Access
    La evolución en el proceso de búsqueda de las Metaheurísticas, entre las que se encuentran PBIL y CHC, supone tomar decisiones en las que aparece de uno u otro modo la aleatoriedad. El conocimiento de la variable aleatoria ...
  • Visualización de grandes volúmenes vía bricking y texturas 3D 

    Yela Reneses, Héctor; Navazo Álvaro, Isabel (2007-06)
    External research report
    Open Access
    This work studies large volume visualization when bricking techniques and 3d texture approaches are combined. The information got for the medical devices is bigger every day and we find problems at the moment of trying to ...
  • Towards a contract-based interoperation model 

    Fernández Peña, Félix Oscar; Willmott, Steven Nicolás (2007-09)
    External research report
    Open Access
    Web Services-based solutions for interoperating processes are considered to be one of the most promising technologies for achieving truly interoperable functioning in open environments. In the last three years, the ...
  • Applying Internet random early detection strategies to scheduling in grid environments 

    Willmott, Steven Nicolás; Brugnoli, Manuel; Heymann, Elisa; Hurley, Paul; Senar, Miquel A. (2007-09)
    External research report
    Open Access
    Resource Allocation in Grid environments to date is generally carried out under the assumption that there is one primary scheduling system scheduling jobs. However, as environments tend towards larger open “utility” Grids ...
  • A variational Bayesian formulation for GTM: Theoretical foundations 

    Olier Caparroso, Iván; Vellido Alcacena, Alfredo (2007-09)
    External research report
    Open Access
    Generative Topographic Mapping (GTM) is a non-linear latent variable model of the manifold learning family that provides simultaneous visualization and clustering of high-dimensional data. It was originally formulated as ...
  • The robustness of stability under link and node failures 

    Álvarez Faura, M. del Carme; Blesa Aguilera, Maria Josep; Serna Iglesias, María José (2007-07)
    External research report
    Open Access
    In the area of communication systems, stability refers to the property of keeping the amount of traffic in the system always bounded over time. Different communication system models have been proposed in order to capture ...
  • Decomposition of geometric constraint graphs based on computing fundamental circuits 

    Joan Arinyo, Robert; Soto Riera, Antoni; Tarres Puertas, Marta Isabel; Vila Marta, Sebastià (2007-09)
    External research report
    Open Access
    The graph-based geometric constraint solving technique works in two steps. First the geometric problem is translated into a graph whose vertices represent de set of geometric elements and whose edges are the constraints. ...

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